MagickCore 6.9.13-51
Convert, Edit, Or Compose Bitmap Images
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draw.c
1/*
2%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3% %
4% %
5% %
6% DDDD RRRR AAA W W %
7% D D R R A A W W %
8% D D RRRR AAAAA W W W %
9% D D R RN A A WW WW %
10% DDDD R R A A W W %
11% %
12% %
13% MagickCore Image Drawing Methods %
14% %
15% %
16% Software Design %
17% Cristy %
18% July 1998 %
19% %
20% %
21% Copyright 1999 ImageMagick Studio LLC, a non-profit organization %
22% dedicated to making software imaging solutions freely available. %
23% %
24% You may not use this file except in compliance with the License. You may %
25% obtain a copy of the License at %
26% %
27% https://imagemagick.org/license/ %
28% %
29% Unless required by applicable law or agreed to in writing, software %
30% distributed under the License is distributed on an "AS IS" BASIS, %
31% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. %
32% See the License for the specific language governing permissions and %
33% limitations under the License. %
34% %
35%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
36%
37% Bill Radcliffe of Corbis (www.corbis.com) contributed the polygon
38% rendering code based on Paul Heckbert's "Concave Polygon Scan Conversion",
39% Graphics Gems, 1990. Leonard Rosenthal and David Harr of Appligent
40% (www.appligent.com) contributed the dash pattern, linecap stroking
41% algorithm, and minor rendering improvements.
42%
43*/
44␌
45/*
46 Include declarations.
47*/
48#include "magick/studio.h"
49#include "magick/annotate.h"
50#include "magick/artifact.h"
51#include "magick/blob.h"
52#include "magick/cache.h"
53#include "magick/cache-private.h"
54#include "magick/cache-view.h"
55#include "magick/channel.h"
56#include "magick/color.h"
57#include "magick/color-private.h"
58#include "magick/colorspace.h"
59#include "magick/colorspace-private.h"
60#include "magick/composite.h"
61#include "magick/composite-private.h"
62#include "magick/constitute.h"
63#include "magick/draw.h"
64#include "magick/draw-private.h"
65#include "magick/enhance.h"
66#include "magick/exception.h"
67#include "magick/exception-private.h"
68#include "magick/gem.h"
69#include "magick/geometry.h"
70#include "magick/image-private.h"
71#include "magick/list.h"
72#include "magick/log.h"
73#include "magick/magick.h"
74#include "magick/memory-private.h"
75#include "magick/monitor.h"
76#include "magick/monitor-private.h"
77#include "magick/option.h"
78#include "magick/paint.h"
79#include "magick/pixel-accessor.h"
80#include "magick/pixel-private.h"
81#include "magick/property.h"
82#include "magick/resample.h"
83#include "magick/resample-private.h"
84#include "magick/resource_.h"
85#include "magick/splay-tree.h"
86#include "magick/string_.h"
87#include "magick/string-private.h"
88#include "magick/thread-private.h"
89#include "magick/token.h"
90#include "magick/transform.h"
91#include "magick/utility.h"
92␌
93/*
94 Define declarations.
95*/
96#define AntialiasThreshold (1.0/3.0)
97#define BezierQuantum 200
98#define PrimitiveExtentPad 4296.0
99#define MaxBezierCoordinates 67108864
100#define ThrowPointExpectedException(image,token) \
101{ \
102 (void) ThrowMagickException(&(image)->exception,GetMagickModule(),DrawError, \
103 "NonconformingDrawingPrimitiveDefinition","`%s'",token); \
104 status=MagickFalse; \
105 break; \
106}
107␌
108/*
109 Typedef declarations.
110*/
111typedef struct _EdgeInfo
112{
113 SegmentInfo
114 bounds;
115
116 double
117 scanline;
118
119 PointInfo
120 *points;
121
122 size_t
123 number_points;
124
125 ssize_t
126 direction;
127
128 MagickBooleanType
129 ghostline;
130
131 size_t
132 highwater;
133} EdgeInfo;
134
135typedef struct _ElementInfo
136{
137 double
138 cx,
139 cy,
140 major,
141 minor,
142 angle;
143} ElementInfo;
144
145typedef struct _MVGInfo
146{
147 PrimitiveInfo
148 **primitive_info;
149
150 size_t
151 *extent;
152
153 ssize_t
154 offset;
155
156 PointInfo
157 point;
158
159 ExceptionInfo
160 *exception;
161} MVGInfo;
162
163typedef struct _PolygonInfo
164{
165 EdgeInfo
166 *edges;
167
168 size_t
169 number_edges;
170} PolygonInfo;
171
172typedef enum
173{
174 MoveToCode,
175 OpenCode,
176 GhostlineCode,
177 LineToCode,
178 EndCode
179} PathInfoCode;
180
181typedef struct _PathInfo
182{
183 PointInfo
184 point;
185
186 PathInfoCode
187 code;
188} PathInfo;
189␌
190/*
191 Forward declarations.
192*/
193static Image
194 *DrawClippingMask(Image *,const DrawInfo *,const char *,const char *,
195 ExceptionInfo *);
196
197static MagickBooleanType
198 DrawStrokePolygon(Image *,const DrawInfo *,const PrimitiveInfo *),
199 RenderMVGContent(Image *,const DrawInfo *,const size_t),
200 TraceArc(MVGInfo *,const PointInfo,const PointInfo,const PointInfo),
201 TraceArcPath(MVGInfo *,const PointInfo,const PointInfo,const PointInfo,
202 const double,const MagickBooleanType,const MagickBooleanType),
203 TraceBezier(MVGInfo *,const size_t),
204 TraceCircle(MVGInfo *,const PointInfo,const PointInfo),
205 TraceEllipse(MVGInfo *,const PointInfo,const PointInfo,const PointInfo),
206 TraceLine(PrimitiveInfo *,const PointInfo,const PointInfo),
207 TraceRectangle(PrimitiveInfo *,const PointInfo,const PointInfo),
208 TraceRoundRectangle(MVGInfo *,const PointInfo,const PointInfo,PointInfo),
209 TraceSquareLinecap(PrimitiveInfo *,const size_t,const double);
210
211static PrimitiveInfo
212 *TraceStrokePolygon(const DrawInfo *,const PrimitiveInfo *,ExceptionInfo *);
213
214static ssize_t
215 TracePath(Image *,MVGInfo *,const char *);
216␌
217/*
218%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
219% %
220% %
221% %
222% A c q u i r e D r a w I n f o %
223% %
224% %
225% %
226%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
227%
228% AcquireDrawInfo() returns a DrawInfo structure properly initialized.
229%
230% The format of the AcquireDrawInfo method is:
231%
232% DrawInfo *AcquireDrawInfo(void)
233%
234*/
235MagickExport DrawInfo *AcquireDrawInfo(void)
236{
237 DrawInfo
238 *draw_info;
239
240 draw_info=(DrawInfo *) AcquireCriticalMemory(sizeof(*draw_info));
241 GetDrawInfo((ImageInfo *) NULL,draw_info);
242 return(draw_info);
243}
244␌
245/*
246%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
247% %
248% %
249% %
250% C l o n e D r a w I n f o %
251% %
252% %
253% %
254%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
255%
256% CloneDrawInfo() makes a copy of the given draw_info structure. If NULL
257% is specified, a new DrawInfo structure is created initialized to default
258% values.
259%
260% The format of the CloneDrawInfo method is:
261%
262% DrawInfo *CloneDrawInfo(const ImageInfo *image_info,
263% const DrawInfo *draw_info)
264%
265% A description of each parameter follows:
266%
267% o image_info: the image info.
268%
269% o draw_info: the draw info.
270%
271*/
272MagickExport DrawInfo *CloneDrawInfo(const ImageInfo *image_info,
273 const DrawInfo *draw_info)
274{
275 DrawInfo
276 *clone_info;
277
278 clone_info=(DrawInfo *) AcquireCriticalMemory(sizeof(*clone_info));
279 GetDrawInfo(image_info,clone_info);
280 if (draw_info == (DrawInfo *) NULL)
281 return(clone_info);
282 if (draw_info->id != (char *) NULL)
283 (void) CloneString(&clone_info->id,draw_info->id);
284 if (draw_info->primitive != (char *) NULL)
285 (void) CloneString(&clone_info->primitive,draw_info->primitive);
286 if (draw_info->geometry != (char *) NULL)
287 (void) CloneString(&clone_info->geometry,draw_info->geometry);
288 clone_info->compliance=draw_info->compliance;
289 clone_info->viewbox=draw_info->viewbox;
290 clone_info->affine=draw_info->affine;
291 clone_info->gravity=draw_info->gravity;
292 clone_info->fill=draw_info->fill;
293 clone_info->stroke=draw_info->stroke;
294 clone_info->stroke_width=draw_info->stroke_width;
295 if (draw_info->fill_pattern != (Image *) NULL)
296 clone_info->fill_pattern=CloneImage(draw_info->fill_pattern,0,0,MagickTrue,
297 &draw_info->fill_pattern->exception);
298 else
299 if (draw_info->tile != (Image *) NULL)
300 clone_info->fill_pattern=CloneImage(draw_info->tile,0,0,MagickTrue,
301 &draw_info->tile->exception);
302 clone_info->tile=NewImageList(); /* tile is deprecated */
303 if (draw_info->stroke_pattern != (Image *) NULL)
304 clone_info->stroke_pattern=CloneImage(draw_info->stroke_pattern,0,0,
305 MagickTrue,&draw_info->stroke_pattern->exception);
306 clone_info->stroke_antialias=draw_info->stroke_antialias;
307 clone_info->text_antialias=draw_info->text_antialias;
308 clone_info->fill_rule=draw_info->fill_rule;
309 clone_info->linecap=draw_info->linecap;
310 clone_info->linejoin=draw_info->linejoin;
311 clone_info->miterlimit=draw_info->miterlimit;
312 clone_info->dash_offset=draw_info->dash_offset;
313 clone_info->decorate=draw_info->decorate;
314 clone_info->compose=draw_info->compose;
315 if (draw_info->text != (char *) NULL)
316 (void) CloneString(&clone_info->text,draw_info->text);
317 if (draw_info->font != (char *) NULL)
318 (void) CloneString(&clone_info->font,draw_info->font);
319 if (draw_info->metrics != (char *) NULL)
320 (void) CloneString(&clone_info->metrics,draw_info->metrics);
321 if (draw_info->family != (char *) NULL)
322 (void) CloneString(&clone_info->family,draw_info->family);
323 clone_info->style=draw_info->style;
324 clone_info->stretch=draw_info->stretch;
325 clone_info->weight=draw_info->weight;
326 if (draw_info->encoding != (char *) NULL)
327 (void) CloneString(&clone_info->encoding,draw_info->encoding);
328 clone_info->pointsize=draw_info->pointsize;
329 clone_info->kerning=draw_info->kerning;
330 clone_info->interline_spacing=draw_info->interline_spacing;
331 clone_info->interword_spacing=draw_info->interword_spacing;
332 clone_info->direction=draw_info->direction;
333 if (draw_info->density != (char *) NULL)
334 (void) CloneString(&clone_info->density,draw_info->density);
335 clone_info->align=draw_info->align;
336 clone_info->undercolor=draw_info->undercolor;
337 clone_info->border_color=draw_info->border_color;
338 if (draw_info->server_name != (char *) NULL)
339 (void) CloneString(&clone_info->server_name,draw_info->server_name);
340 if (draw_info->dash_pattern != (double *) NULL)
341 {
342 ssize_t
343 x;
344
345 for (x=0; fabs(draw_info->dash_pattern[x]) >= MagickEpsilon; x++) ;
346 clone_info->dash_pattern=(double *) AcquireQuantumMemory((size_t) (2*x+2),
347 sizeof(*clone_info->dash_pattern));
348 if (clone_info->dash_pattern == (double *) NULL)
349 ThrowFatalException(ResourceLimitFatalError,
350 "UnableToAllocateDashPattern");
351 (void) memset(clone_info->dash_pattern,0,(size_t) (2*x+2)*
352 sizeof(*clone_info->dash_pattern));
353 (void) memcpy(clone_info->dash_pattern,draw_info->dash_pattern,(size_t)
354 (x+1)*sizeof(*clone_info->dash_pattern));
355 }
356 clone_info->gradient=draw_info->gradient;
357 if (draw_info->gradient.stops != (StopInfo *) NULL)
358 {
359 size_t
360 number_stops;
361
362 number_stops=clone_info->gradient.number_stops;
363 clone_info->gradient.stops=(StopInfo *) AcquireQuantumMemory((size_t)
364 number_stops,sizeof(*clone_info->gradient.stops));
365 if (clone_info->gradient.stops == (StopInfo *) NULL)
366 ThrowFatalException(ResourceLimitFatalError,
367 "UnableToAllocateDashPattern");
368 (void) memcpy(clone_info->gradient.stops,draw_info->gradient.stops,
369 (size_t) number_stops*sizeof(*clone_info->gradient.stops));
370 }
371 clone_info->bounds=draw_info->bounds;
372 clone_info->fill_opacity=draw_info->fill_opacity;
373 clone_info->stroke_opacity=draw_info->stroke_opacity;
374 clone_info->element_reference=draw_info->element_reference;
375 clone_info->clip_path=draw_info->clip_path;
376 clone_info->clip_units=draw_info->clip_units;
377 if (draw_info->clip_mask != (char *) NULL)
378 (void) CloneString(&clone_info->clip_mask,draw_info->clip_mask);
379 if (draw_info->clipping_mask != (Image *) NULL)
380 clone_info->clipping_mask=CloneImage(draw_info->clipping_mask,0,0,
381 MagickTrue,&draw_info->clipping_mask->exception);
382 if (draw_info->composite_mask != (Image *) NULL)
383 clone_info->composite_mask=CloneImage(draw_info->composite_mask,0,0,
384 MagickTrue,&draw_info->composite_mask->exception);
385 clone_info->render=draw_info->render;
386 clone_info->debug=draw_info->debug;
387 return(clone_info);
388}
389␌
390/*
391%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
392% %
393% %
394% %
395+ C o n v e r t P a t h T o P o l y g o n %
396% %
397% %
398% %
399%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
400%
401% ConvertPathToPolygon() converts a path to the more efficient sorted
402% rendering form.
403%
404% The format of the ConvertPathToPolygon method is:
405%
406% PolygonInfo *ConvertPathToPolygon(const PathInfo *path_info,
407% ExceptionInfo *exception)
408%
409% A description of each parameter follows:
410%
411% o ConvertPathToPolygon() returns the path in a more efficient sorted
412% rendering form of type PolygonInfo.
413%
414% o draw_info: Specifies a pointer to an DrawInfo structure.
415%
416% o path_info: Specifies a pointer to an PathInfo structure.
417%
418% o exception: return any errors or warnings in this structure.
419%
420*/
421
422static PolygonInfo *DestroyPolygonInfo(PolygonInfo *polygon_info)
423{
424 ssize_t
425 i;
426
427 if (polygon_info->edges != (EdgeInfo *) NULL)
428 {
429 for (i=0; i < (ssize_t) polygon_info->number_edges; i++)
430 if (polygon_info->edges[i].points != (PointInfo *) NULL)
431 polygon_info->edges[i].points=(PointInfo *)
432 RelinquishMagickMemory(polygon_info->edges[i].points);
433 polygon_info->edges=(EdgeInfo *) RelinquishMagickMemory(
434 polygon_info->edges);
435 }
436 return((PolygonInfo *) RelinquishMagickMemory(polygon_info));
437}
438
439#if defined(__cplusplus) || defined(c_plusplus)
440extern "C" {
441#endif
442
443static int DrawCompareEdges(const void *p_edge,const void *q_edge)
444{
445#define DrawCompareEdge(p,q) \
446{ \
447 if (((p)-(q)) < 0.0) \
448 return(-1); \
449 if (((p)-(q)) > 0.0) \
450 return(1); \
451}
452
453 const PointInfo
454 *p,
455 *q;
456
457 /*
458 Edge sorting for right-handed coordinate system.
459 */
460 p=((const EdgeInfo *) p_edge)->points;
461 q=((const EdgeInfo *) q_edge)->points;
462 DrawCompareEdge(p[0].y,q[0].y);
463 DrawCompareEdge(p[0].x,q[0].x);
464 DrawCompareEdge((p[1].x-p[0].x)*(q[1].y-q[0].y),(p[1].y-p[0].y)*
465 (q[1].x-q[0].x));
466 DrawCompareEdge(p[1].y,q[1].y);
467 DrawCompareEdge(p[1].x,q[1].x);
468 return(0);
469}
470
471#if defined(__cplusplus) || defined(c_plusplus)
472}
473#endif
474
475static void LogPolygonInfo(const PolygonInfo *polygon_info)
476{
477 EdgeInfo
478 *p;
479
480 ssize_t
481 i,
482 j;
483
484 (void) LogMagickEvent(DrawEvent,GetMagickModule()," begin active-edge");
485 p=polygon_info->edges;
486 for (i=0; i < (ssize_t) polygon_info->number_edges; i++)
487 {
488 (void) LogMagickEvent(DrawEvent,GetMagickModule()," edge %.20g:",
489 (double) i);
490 (void) LogMagickEvent(DrawEvent,GetMagickModule()," direction: %s",
491 p->direction != MagickFalse ? "down" : "up");
492 (void) LogMagickEvent(DrawEvent,GetMagickModule()," ghostline: %s",
493 p->ghostline != MagickFalse ? "transparent" : "opaque");
494 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
495 " bounds: %g,%g - %g,%g",p->bounds.x1,p->bounds.y1,
496 p->bounds.x2,p->bounds.y2);
497 for (j=0; j < (ssize_t) p->number_points; j++)
498 (void) LogMagickEvent(DrawEvent,GetMagickModule()," %g,%g",
499 p->points[j].x,p->points[j].y);
500 p++;
501 }
502 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end active-edge");
503}
504
505static void ReversePoints(PointInfo *points,const size_t number_points)
506{
507 PointInfo
508 point;
509
510 ssize_t
511 i;
512
513 for (i=0; i < (ssize_t) (number_points >> 1); i++)
514 {
515 point=points[i];
516 points[i]=points[number_points-(i+1)];
517 points[number_points-(i+1)]=point;
518 }
519}
520
521static PolygonInfo *ConvertPathToPolygon(const PathInfo *path_info,
522 ExceptionInfo *exception)
523{
524 long
525 direction,
526 next_direction;
527
528 PointInfo
529 point,
530 *points;
531
532 PolygonInfo
533 *polygon_info;
534
535 SegmentInfo
536 bounds;
537
538 ssize_t
539 i,
540 n;
541
542 MagickBooleanType
543 ghostline;
544
545 size_t
546 edge,
547 number_edges,
548 number_points;
549
550 /*
551 Convert a path to the more efficient sorted rendering form.
552 */
553 polygon_info=(PolygonInfo *) AcquireMagickMemory(sizeof(*polygon_info));
554 if (polygon_info == (PolygonInfo *) NULL)
555 {
556 (void) ThrowMagickException(exception,GetMagickModule(),
557 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
558 return((PolygonInfo *) NULL);
559 }
560 number_edges=16;
561 polygon_info->edges=(EdgeInfo *) AcquireQuantumMemory(number_edges,
562 sizeof(*polygon_info->edges));
563 if (polygon_info->edges == (EdgeInfo *) NULL)
564 {
565 (void) ThrowMagickException(exception,GetMagickModule(),
566 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
567 return(DestroyPolygonInfo(polygon_info));
568 }
569 (void) memset(polygon_info->edges,0,number_edges*
570 sizeof(*polygon_info->edges));
571 direction=0;
572 edge=0;
573 ghostline=MagickFalse;
574 n=0;
575 number_points=0;
576 points=(PointInfo *) NULL;
577 (void) memset(&point,0,sizeof(point));
578 (void) memset(&bounds,0,sizeof(bounds));
579 polygon_info->edges[edge].number_points=(size_t) n;
580 polygon_info->edges[edge].scanline=0.0;
581 polygon_info->edges[edge].highwater=0;
582 polygon_info->edges[edge].ghostline=ghostline;
583 polygon_info->edges[edge].direction=(ssize_t) direction;
584 polygon_info->edges[edge].points=points;
585 polygon_info->edges[edge].bounds=bounds;
586 polygon_info->number_edges=0;
587 for (i=0; path_info[i].code != EndCode; i++)
588 {
589 if ((path_info[i].code == MoveToCode) || (path_info[i].code == OpenCode) ||
590 (path_info[i].code == GhostlineCode))
591 {
592 /*
593 Move to.
594 */
595 if ((points != (PointInfo *) NULL) && (n >= 2))
596 {
597 if (edge == number_edges)
598 {
599 number_edges<<=1;
600 polygon_info->edges=(EdgeInfo *) ResizeQuantumMemory(
601 polygon_info->edges,(size_t) number_edges,
602 sizeof(*polygon_info->edges));
603 if (polygon_info->edges == (EdgeInfo *) NULL)
604 {
605 (void) ThrowMagickException(exception,GetMagickModule(),
606 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
607 points=(PointInfo *) RelinquishMagickMemory(points);
608 return(DestroyPolygonInfo(polygon_info));
609 }
610 }
611 polygon_info->edges[edge].number_points=(size_t) n;
612 polygon_info->edges[edge].scanline=(-1.0);
613 polygon_info->edges[edge].highwater=0;
614 polygon_info->edges[edge].ghostline=ghostline;
615 polygon_info->edges[edge].direction=(ssize_t) (direction > 0);
616 if (direction < 0)
617 ReversePoints(points,(size_t) n);
618 polygon_info->edges[edge].points=points;
619 polygon_info->edges[edge].bounds=bounds;
620 polygon_info->edges[edge].bounds.y1=points[0].y;
621 polygon_info->edges[edge].bounds.y2=points[n-1].y;
622 points=(PointInfo *) NULL;
623 ghostline=MagickFalse;
624 edge++;
625 polygon_info->number_edges=edge;
626 }
627 if (points == (PointInfo *) NULL)
628 {
629 number_points=16;
630 points=(PointInfo *) AcquireQuantumMemory((size_t) number_points,
631 sizeof(*points));
632 if (points == (PointInfo *) NULL)
633 {
634 (void) ThrowMagickException(exception,GetMagickModule(),
635 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
636 return(DestroyPolygonInfo(polygon_info));
637 }
638 }
639 ghostline=path_info[i].code == GhostlineCode ? MagickTrue : MagickFalse;
640 point=path_info[i].point;
641 points[0]=point;
642 bounds.x1=point.x;
643 bounds.x2=point.x;
644 direction=0;
645 n=1;
646 continue;
647 }
648 /*
649 Line to.
650 */
651 next_direction=((path_info[i].point.y > point.y) ||
652 ((fabs(path_info[i].point.y-point.y) < MagickEpsilon) &&
653 (path_info[i].point.x > point.x))) ? 1 : -1;
654 if ((points != (PointInfo *) NULL) && (direction != 0) &&
655 (direction != next_direction))
656 {
657 /*
658 New edge.
659 */
660 point=points[n-1];
661 if (edge == number_edges)
662 {
663 number_edges<<=1;
664 polygon_info->edges=(EdgeInfo *) ResizeQuantumMemory(
665 polygon_info->edges,(size_t) number_edges,
666 sizeof(*polygon_info->edges));
667 if (polygon_info->edges == (EdgeInfo *) NULL)
668 {
669 (void) ThrowMagickException(exception,GetMagickModule(),
670 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
671 points=(PointInfo *) RelinquishMagickMemory(points);
672 return(DestroyPolygonInfo(polygon_info));
673 }
674 }
675 polygon_info->edges[edge].number_points=(size_t) n;
676 polygon_info->edges[edge].scanline=(-1.0);
677 polygon_info->edges[edge].highwater=0;
678 polygon_info->edges[edge].ghostline=ghostline;
679 polygon_info->edges[edge].direction=(ssize_t) (direction > 0);
680 if (direction < 0)
681 ReversePoints(points,(size_t) n);
682 polygon_info->edges[edge].points=points;
683 polygon_info->edges[edge].bounds=bounds;
684 polygon_info->edges[edge].bounds.y1=points[0].y;
685 polygon_info->edges[edge].bounds.y2=points[n-1].y;
686 polygon_info->number_edges=edge+1;
687 points=(PointInfo *) NULL;
688 number_points=16;
689 points=(PointInfo *) AcquireQuantumMemory((size_t) number_points,
690 sizeof(*points));
691 if (points == (PointInfo *) NULL)
692 {
693 (void) ThrowMagickException(exception,GetMagickModule(),
694 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
695 return(DestroyPolygonInfo(polygon_info));
696 }
697 n=1;
698 ghostline=MagickFalse;
699 points[0]=point;
700 bounds.x1=point.x;
701 bounds.x2=point.x;
702 edge++;
703 }
704 direction=next_direction;
705 if (points == (PointInfo *) NULL)
706 continue;
707 if (n == (ssize_t) number_points)
708 {
709 number_points<<=1;
710 points=(PointInfo *) ResizeQuantumMemory(points,(size_t) number_points,
711 sizeof(*points));
712 if (points == (PointInfo *) NULL)
713 {
714 (void) ThrowMagickException(exception,GetMagickModule(),
715 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
716 return(DestroyPolygonInfo(polygon_info));
717 }
718 }
719 point=path_info[i].point;
720 points[n]=point;
721 if (point.x < bounds.x1)
722 bounds.x1=point.x;
723 if (point.x > bounds.x2)
724 bounds.x2=point.x;
725 n++;
726 }
727 if (points != (PointInfo *) NULL)
728 {
729 if (n < 2)
730 points=(PointInfo *) RelinquishMagickMemory(points);
731 else
732 {
733 if (edge == number_edges)
734 {
735 number_edges<<=1;
736 polygon_info->edges=(EdgeInfo *) ResizeQuantumMemory(
737 polygon_info->edges,(size_t) number_edges,
738 sizeof(*polygon_info->edges));
739 if (polygon_info->edges == (EdgeInfo *) NULL)
740 {
741 (void) ThrowMagickException(exception,GetMagickModule(),
742 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
743 return(DestroyPolygonInfo(polygon_info));
744 }
745 }
746 polygon_info->edges[edge].number_points=(size_t) n;
747 polygon_info->edges[edge].scanline=(-1.0);
748 polygon_info->edges[edge].highwater=0;
749 polygon_info->edges[edge].ghostline=ghostline;
750 polygon_info->edges[edge].direction=(ssize_t) (direction > 0);
751 if (direction < 0)
752 ReversePoints(points,(size_t) n);
753 polygon_info->edges[edge].points=points;
754 polygon_info->edges[edge].bounds=bounds;
755 polygon_info->edges[edge].bounds.y1=points[0].y;
756 polygon_info->edges[edge].bounds.y2=points[n-1].y;
757 points=(PointInfo *) NULL;
758 ghostline=MagickFalse;
759 edge++;
760 polygon_info->number_edges=edge;
761 }
762 }
763 polygon_info->number_edges=edge;
764 polygon_info->edges=(EdgeInfo *) ResizeQuantumMemory(polygon_info->edges,
765 polygon_info->number_edges,sizeof(*polygon_info->edges));
766 if (polygon_info->edges == (EdgeInfo *) NULL)
767 {
768 (void) ThrowMagickException(exception,GetMagickModule(),
769 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
770 return(DestroyPolygonInfo(polygon_info));
771 }
772 for (i=0; i < (ssize_t) polygon_info->number_edges; i++)
773 {
774 EdgeInfo
775 *edge_info;
776
777 edge_info=polygon_info->edges+i;
778 edge_info->points=(PointInfo *) ResizeQuantumMemory(edge_info->points,
779 edge_info->number_points,sizeof(*edge_info->points));
780 if (edge_info->points == (PointInfo *) NULL)
781 {
782 (void) ThrowMagickException(exception,GetMagickModule(),
783 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
784 return(DestroyPolygonInfo(polygon_info));
785 }
786 }
787 qsort(polygon_info->edges,(size_t) polygon_info->number_edges,
788 sizeof(*polygon_info->edges),DrawCompareEdges);
789 if ((GetLogEventMask() & DrawEvent) != 0)
790 LogPolygonInfo(polygon_info);
791 return(polygon_info);
792}
793␌
794/*
795%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
796% %
797% %
798% %
799+ C o n v e r t P r i m i t i v e T o P a t h %
800% %
801% %
802% %
803%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
804%
805% ConvertPrimitiveToPath() converts a PrimitiveInfo structure into a vector
806% path structure.
807%
808% The format of the ConvertPrimitiveToPath method is:
809%
810% PathInfo *ConvertPrimitiveToPath(const DrawInfo *draw_info,
811% const PrimitiveInfo *primitive_info,ExceptionInfo *exception)
812%
813% A description of each parameter follows:
814%
815% o ConvertPrimitiveToPath() returns a vector path structure of type
816% PathInfo.
817%
818% o draw_info: a structure of type DrawInfo.
819%
820% o primitive_info: Specifies a pointer to an PrimitiveInfo structure.
821%
822%
823*/
824
825static void LogPathInfo(const PathInfo *path_info)
826{
827 const PathInfo
828 *p;
829
830 (void) LogMagickEvent(DrawEvent,GetMagickModule()," begin vector-path");
831 for (p=path_info; p->code != EndCode; p++)
832 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
833 " %g,%g %s",p->point.x,p->point.y,p->code == GhostlineCode ?
834 "moveto ghostline" : p->code == OpenCode ? "moveto open" :
835 p->code == MoveToCode ? "moveto" : p->code == LineToCode ? "lineto" :
836 "?");
837 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end vector-path");
838}
839
840static PathInfo *ConvertPrimitiveToPath(
841 const DrawInfo *magick_unused(draw_info),const PrimitiveInfo *primitive_info,
842 ExceptionInfo *exception)
843{
844 MagickBooleanType
845 closed_subpath;
846
847 PathInfo
848 *path_info;
849
850 PathInfoCode
851 code;
852
853 PointInfo
854 p,
855 q;
856
857 ssize_t
858 i,
859 n;
860
861 ssize_t
862 coordinates,
863 start;
864
865 magick_unreferenced(draw_info);
866
867 /*
868 Converts a PrimitiveInfo structure into a vector path structure.
869 */
870 switch (primitive_info->primitive)
871 {
872 case PointPrimitive:
873 case ColorPrimitive:
874 case MattePrimitive:
875 case TextPrimitive:
876 case ImagePrimitive:
877 return((PathInfo *) NULL);
878 default:
879 break;
880 }
881 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++) ;
882 path_info=(PathInfo *) AcquireQuantumMemory((size_t) (3UL*i+1UL),
883 sizeof(*path_info));
884 if (path_info == (PathInfo *) NULL)
885 {
886 (void) ThrowMagickException(exception,GetMagickModule(),
887 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
888 return((PathInfo *) NULL);
889 }
890 coordinates=0;
891 closed_subpath=MagickFalse;
892 n=0;
893 p.x=(-1.0);
894 p.y=(-1.0);
895 q.x=(-1.0);
896 q.y=(-1.0);
897 start=0;
898 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
899 {
900 code=LineToCode;
901 if (coordinates <= 0)
902 {
903 /*
904 New subpath.
905 */
906 coordinates=(ssize_t) primitive_info[i].coordinates;
907 p=primitive_info[i].point;
908 start=n;
909 code=MoveToCode;
910 closed_subpath=primitive_info[i].closed_subpath;
911 }
912 coordinates--;
913 if ((code == MoveToCode) || (coordinates <= 0) ||
914 (fabs(q.x-primitive_info[i].point.x) >= MagickEpsilon) ||
915 (fabs(q.y-primitive_info[i].point.y) >= MagickEpsilon))
916 {
917 /*
918 Eliminate duplicate points.
919 */
920 path_info[n].code=code;
921 path_info[n].point=primitive_info[i].point;
922 q=primitive_info[i].point;
923 n++;
924 }
925 if (coordinates > 0)
926 continue; /* next point in current subpath */
927 if (closed_subpath != MagickFalse)
928 {
929 closed_subpath=MagickFalse;
930 continue;
931 }
932 /*
933 Mark the p point as open if the subpath is not closed.
934 */
935 path_info[start].code=OpenCode;
936 path_info[n].code=GhostlineCode;
937 path_info[n].point=primitive_info[i].point;
938 n++;
939 path_info[n].code=LineToCode;
940 path_info[n].point=p;
941 n++;
942 }
943 path_info[n].code=EndCode;
944 path_info[n].point.x=0.0;
945 path_info[n].point.y=0.0;
946 if (IsEventLogging() != MagickFalse)
947 LogPathInfo(path_info);
948 path_info=(PathInfo *) ResizeQuantumMemory(path_info,(size_t) (n+1),
949 sizeof(*path_info));
950 return(path_info);
951}
952␌
953/*
954%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
955% %
956% %
957% %
958% D e s t r o y D r a w I n f o %
959% %
960% %
961% %
962%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
963%
964% DestroyDrawInfo() deallocates memory associated with an DrawInfo structure.
965%
966% The format of the DestroyDrawInfo method is:
967%
968% DrawInfo *DestroyDrawInfo(DrawInfo *draw_info)
969%
970% A description of each parameter follows:
971%
972% o draw_info: the draw info.
973%
974*/
975MagickExport DrawInfo *DestroyDrawInfo(DrawInfo *draw_info)
976{
977 assert(draw_info != (DrawInfo *) NULL);
978 assert(draw_info->signature == MagickCoreSignature);
979 if (IsEventLogging() != MagickFalse)
980 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
981 if (draw_info->id != (char *) NULL)
982 draw_info->id=DestroyString(draw_info->id);
983 if (draw_info->primitive != (char *) NULL)
984 draw_info->primitive=DestroyString(draw_info->primitive);
985 if (draw_info->text != (char *) NULL)
986 draw_info->text=DestroyString(draw_info->text);
987 if (draw_info->geometry != (char *) NULL)
988 draw_info->geometry=DestroyString(draw_info->geometry);
989 if (draw_info->tile != (Image *) NULL)
990 draw_info->tile=DestroyImage(draw_info->tile);
991 if (draw_info->fill_pattern != (Image *) NULL)
992 draw_info->fill_pattern=DestroyImage(draw_info->fill_pattern);
993 if (draw_info->stroke_pattern != (Image *) NULL)
994 draw_info->stroke_pattern=DestroyImage(draw_info->stroke_pattern);
995 if (draw_info->font != (char *) NULL)
996 draw_info->font=DestroyString(draw_info->font);
997 if (draw_info->metrics != (char *) NULL)
998 draw_info->metrics=DestroyString(draw_info->metrics);
999 if (draw_info->family != (char *) NULL)
1000 draw_info->family=DestroyString(draw_info->family);
1001 if (draw_info->encoding != (char *) NULL)
1002 draw_info->encoding=DestroyString(draw_info->encoding);
1003 if (draw_info->density != (char *) NULL)
1004 draw_info->density=DestroyString(draw_info->density);
1005 if (draw_info->server_name != (char *) NULL)
1006 draw_info->server_name=(char *)
1007 RelinquishMagickMemory(draw_info->server_name);
1008 if (draw_info->dash_pattern != (double *) NULL)
1009 draw_info->dash_pattern=(double *) RelinquishMagickMemory(
1010 draw_info->dash_pattern);
1011 if (draw_info->gradient.stops != (StopInfo *) NULL)
1012 draw_info->gradient.stops=(StopInfo *) RelinquishMagickMemory(
1013 draw_info->gradient.stops);
1014 if (draw_info->clip_mask != (char *) NULL)
1015 draw_info->clip_mask=DestroyString(draw_info->clip_mask);
1016 if (draw_info->clipping_mask != (Image *) NULL)
1017 draw_info->clipping_mask=DestroyImage(draw_info->clipping_mask);
1018 if (draw_info->composite_mask != (Image *) NULL)
1019 draw_info->composite_mask=DestroyImage(draw_info->composite_mask);
1020 if (draw_info->image_info != (ImageInfo *) NULL)
1021 draw_info->image_info=DestroyImageInfo(draw_info->image_info);
1022 draw_info->signature=(~MagickCoreSignature);
1023 draw_info=(DrawInfo *) RelinquishMagickMemory(draw_info);
1024 return(draw_info);
1025}
1026␌
1027/*
1028%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1029% %
1030% %
1031% %
1032% D r a w A f f i n e I m a g e %
1033% %
1034% %
1035% %
1036%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1037%
1038% DrawAffineImage() composites the source over the destination image as
1039% dictated by the affine transform.
1040%
1041% The format of the DrawAffineImage method is:
1042%
1043% MagickBooleanType DrawAffineImage(Image *image,const Image *source,
1044% const AffineMatrix *affine)
1045%
1046% A description of each parameter follows:
1047%
1048% o image: the image.
1049%
1050% o source: the source image.
1051%
1052% o affine: the affine transform.
1053%
1054*/
1055
1056static SegmentInfo AffineEdge(const Image *image,const AffineMatrix *affine,
1057 const double y,const SegmentInfo *edge)
1058{
1059 double
1060 intercept,
1061 z;
1062
1063 double
1064 x;
1065
1066 SegmentInfo
1067 inverse_edge;
1068
1069 /*
1070 Determine left and right edges.
1071 */
1072 inverse_edge.x1=edge->x1;
1073 inverse_edge.y1=edge->y1;
1074 inverse_edge.x2=edge->x2;
1075 inverse_edge.y2=edge->y2;
1076 z=affine->ry*y+affine->tx;
1077 if (affine->sx >= MagickEpsilon)
1078 {
1079 intercept=(-z/affine->sx);
1080 x=intercept;
1081 if (x > inverse_edge.x1)
1082 inverse_edge.x1=x;
1083 intercept=(-z+(double) image->columns)/affine->sx;
1084 x=intercept;
1085 if (x < inverse_edge.x2)
1086 inverse_edge.x2=x;
1087 }
1088 else
1089 if (affine->sx < -MagickEpsilon)
1090 {
1091 intercept=(-z+(double) image->columns)/affine->sx;
1092 x=intercept;
1093 if (x > inverse_edge.x1)
1094 inverse_edge.x1=x;
1095 intercept=(-z/affine->sx);
1096 x=intercept;
1097 if (x < inverse_edge.x2)
1098 inverse_edge.x2=x;
1099 }
1100 else
1101 if ((z < 0.0) || ((size_t) floor(z+0.5) >= image->columns))
1102 {
1103 inverse_edge.x2=edge->x1;
1104 return(inverse_edge);
1105 }
1106 /*
1107 Determine top and bottom edges.
1108 */
1109 z=affine->sy*y+affine->ty;
1110 if (affine->rx >= MagickEpsilon)
1111 {
1112 intercept=(-z/affine->rx);
1113 x=intercept;
1114 if (x > inverse_edge.x1)
1115 inverse_edge.x1=x;
1116 intercept=(-z+(double) image->rows)/affine->rx;
1117 x=intercept;
1118 if (x < inverse_edge.x2)
1119 inverse_edge.x2=x;
1120 }
1121 else
1122 if (affine->rx < -MagickEpsilon)
1123 {
1124 intercept=(-z+(double) image->rows)/affine->rx;
1125 x=intercept;
1126 if (x > inverse_edge.x1)
1127 inverse_edge.x1=x;
1128 intercept=(-z/affine->rx);
1129 x=intercept;
1130 if (x < inverse_edge.x2)
1131 inverse_edge.x2=x;
1132 }
1133 else
1134 if ((z < 0.0) || ((size_t) floor(z+0.5) >= image->rows))
1135 {
1136 inverse_edge.x2=edge->x2;
1137 return(inverse_edge);
1138 }
1139 return(inverse_edge);
1140}
1141
1142static AffineMatrix InverseAffineMatrix(const AffineMatrix *affine)
1143{
1144 AffineMatrix
1145 inverse_affine;
1146
1147 double
1148 determinant;
1149
1150 determinant=MagickSafeReciprocal(affine->sx*affine->sy-affine->rx*
1151 affine->ry);
1152 inverse_affine.sx=determinant*affine->sy;
1153 inverse_affine.rx=determinant*(-affine->rx);
1154 inverse_affine.ry=determinant*(-affine->ry);
1155 inverse_affine.sy=determinant*affine->sx;
1156 inverse_affine.tx=(-affine->tx)*inverse_affine.sx-affine->ty*
1157 inverse_affine.ry;
1158 inverse_affine.ty=(-affine->tx)*inverse_affine.rx-affine->ty*
1159 inverse_affine.sy;
1160 return(inverse_affine);
1161}
1162
1163MagickExport MagickBooleanType DrawAffineImage(Image *image,
1164 const Image *source,const AffineMatrix *affine)
1165{
1166 AffineMatrix
1167 inverse_affine;
1168
1169 CacheView
1170 *image_view,
1171 *source_view;
1172
1173 ExceptionInfo
1174 *exception;
1175
1176 MagickBooleanType
1177 status;
1178
1179 MagickPixelPacket
1180 zero;
1181
1182 PointInfo
1183 extent[4],
1184 min,
1185 max,
1186 point;
1187
1188 ssize_t
1189 i;
1190
1191 SegmentInfo
1192 edge;
1193
1194 ssize_t
1195 start,
1196 stop,
1197 y;
1198
1199 /*
1200 Determine bounding box.
1201 */
1202 assert(image != (Image *) NULL);
1203 assert(image->signature == MagickCoreSignature);
1204 assert(source != (const Image *) NULL);
1205 assert(source->signature == MagickCoreSignature);
1206 if (IsEventLogging() != MagickFalse)
1207 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
1208 assert(affine != (AffineMatrix *) NULL);
1209 extent[0].x=0.0;
1210 extent[0].y=0.0;
1211 extent[1].x=(double) source->columns;
1212 extent[1].y=0.0;
1213 extent[2].x=(double) source->columns;
1214 extent[2].y=(double) source->rows;
1215 extent[3].x=0.0;
1216 extent[3].y=(double) source->rows;
1217 for (i=0; i < 4; i++)
1218 {
1219 point=extent[i];
1220 extent[i].x=point.x*affine->sx+point.y*affine->ry+affine->tx;
1221 extent[i].y=point.x*affine->rx+point.y*affine->sy+affine->ty;
1222 }
1223 min=extent[0];
1224 max=extent[0];
1225 for (i=1; i < 4; i++)
1226 {
1227 if (min.x > extent[i].x)
1228 min.x=extent[i].x;
1229 if (min.y > extent[i].y)
1230 min.y=extent[i].y;
1231 if (max.x < extent[i].x)
1232 max.x=extent[i].x;
1233 if (max.y < extent[i].y)
1234 max.y=extent[i].y;
1235 }
1236 /*
1237 Affine transform image.
1238 */
1239 if (SetImageStorageClass(image,DirectClass) == MagickFalse)
1240 return(MagickFalse);
1241 status=MagickTrue;
1242 edge.x1=min.x;
1243 edge.y1=min.y;
1244 edge.x2=max.x;
1245 edge.y2=max.y;
1246 inverse_affine=InverseAffineMatrix(affine);
1247 if (edge.y1 < 0.0)
1248 edge.y1=0.0;
1249 if (edge.y2 > (image->rows-1.0))
1250 edge.y2=image->rows-1.0;
1251 GetMagickPixelPacket(image,&zero);
1252 exception=(&image->exception);
1253 start=CastDoubleToLong(ceil(edge.y1-0.5));
1254 stop=CastDoubleToLong(floor(edge.y2+0.5));
1255 source_view=AcquireVirtualCacheView(source,exception);
1256 image_view=AcquireAuthenticCacheView(image,exception);
1257#if defined(MAGICKCORE_OPENMP_SUPPORT)
1258 #pragma omp parallel for schedule(static) shared(status) \
1259 magick_number_threads(source,image,stop-start,1)
1260#endif
1261 for (y=start; y <= stop; y++)
1262 {
1263 IndexPacket
1264 *magick_restrict indexes;
1265
1266 MagickPixelPacket
1267 composite,
1268 pixel;
1269
1270 PointInfo
1271 point;
1272
1273 PixelPacket
1274 *magick_restrict q;
1275
1276 SegmentInfo
1277 inverse_edge;
1278
1279 ssize_t
1280 x,
1281 x_offset;
1282
1283 if (status == MagickFalse)
1284 continue;
1285 inverse_edge=AffineEdge(source,&inverse_affine,(double) y,&edge);
1286 if (inverse_edge.x2 < inverse_edge.x1)
1287 continue;
1288 if (inverse_edge.x1 < 0.0)
1289 inverse_edge.x1=0.0;
1290 if (inverse_edge.x2 > image->columns-1.0)
1291 inverse_edge.x2=image->columns-1.0;
1292 q=GetCacheViewAuthenticPixels(image_view,CastDoubleToLong(
1293 ceil(inverse_edge.x1-0.5)),y,(size_t) CastDoubleToLong(floor(
1294 inverse_edge.x2+0.5)-ceil(inverse_edge.x1-0.5)+1),1,exception);
1295 if (q == (PixelPacket *) NULL)
1296 continue;
1297 indexes=GetCacheViewAuthenticIndexQueue(image_view);
1298 pixel=zero;
1299 composite=zero;
1300 x_offset=0;
1301 for (x=CastDoubleToLong(ceil(inverse_edge.x1-0.5));
1302 x <= CastDoubleToLong(floor(inverse_edge.x2+0.5)); x++)
1303 {
1304 point.x=(double) x*inverse_affine.sx+y*inverse_affine.ry+
1305 inverse_affine.tx;
1306 point.y=(double) x*inverse_affine.rx+y*inverse_affine.sy+
1307 inverse_affine.ty;
1308 status=InterpolateMagickPixelPacket(source,source_view,
1309 UndefinedInterpolatePixel,point.x,point.y,&pixel,exception);
1310 if (status == MagickFalse)
1311 break;
1312 SetMagickPixelPacket(image,q,indexes+x_offset,&composite);
1313 MagickPixelCompositeOver(&pixel,pixel.opacity,&composite,
1314 composite.opacity,&composite);
1315 SetPixelPacket(image,&composite,q,indexes+x_offset);
1316 x_offset++;
1317 q++;
1318 }
1319 if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
1320 status=MagickFalse;
1321 }
1322 source_view=DestroyCacheView(source_view);
1323 image_view=DestroyCacheView(image_view);
1324 return(status);
1325}
1326␌
1327/*
1328%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1329% %
1330% %
1331% %
1332+ D r a w B o u n d i n g R e c t a n g l e s %
1333% %
1334% %
1335% %
1336%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1337%
1338% DrawBoundingRectangles() draws the bounding rectangles on the image. This
1339% is only useful for developers debugging the rendering algorithm.
1340%
1341% The format of the DrawBoundingRectangles method is:
1342%
1343% MagickBooleanType DrawBoundingRectangles(Image *image,
1344% const DrawInfo *draw_info,PolygonInfo *polygon_info)
1345%
1346% A description of each parameter follows:
1347%
1348% o image: the image.
1349%
1350% o draw_info: the draw info.
1351%
1352% o polygon_info: Specifies a pointer to a PolygonInfo structure.
1353%
1354*/
1355
1356static MagickBooleanType DrawBoundingRectangles(Image *image,
1357 const DrawInfo *draw_info,const PolygonInfo *polygon_info)
1358{
1359 double
1360 mid;
1361
1362 DrawInfo
1363 *clone_info;
1364
1365 MagickStatusType
1366 status;
1367
1368 PointInfo
1369 end,
1370 resolution,
1371 start;
1372
1373 PrimitiveInfo
1374 primitive_info[6];
1375
1376 ssize_t
1377 i;
1378
1379 SegmentInfo
1380 bounds;
1381
1382 ssize_t
1383 coordinates;
1384
1385 (void) memset(primitive_info,0,sizeof(primitive_info));
1386 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
1387 status=QueryColorDatabase("#0000",&clone_info->fill,&image->exception);
1388 if (status == MagickFalse)
1389 {
1390 clone_info=DestroyDrawInfo(clone_info);
1391 return(MagickFalse);
1392 }
1393 resolution.x=96.0;
1394 resolution.y=96.0;
1395 if (clone_info->density != (char *) NULL)
1396 {
1397 GeometryInfo
1398 geometry_info;
1399
1400 MagickStatusType
1401 flags;
1402
1403 flags=ParseGeometry(clone_info->density,&geometry_info);
1404 if ((flags & RhoValue) != 0)
1405 resolution.x=geometry_info.rho;
1406 resolution.y=resolution.x;
1407 if ((flags & SigmaValue) != 0)
1408 resolution.y=geometry_info.sigma;
1409 }
1410 mid=(resolution.x/96.0)*ExpandAffine(&clone_info->affine)*
1411 clone_info->stroke_width/2.0;
1412 bounds.x1=0.0;
1413 bounds.y1=0.0;
1414 bounds.x2=0.0;
1415 bounds.y2=0.0;
1416 if (polygon_info != (PolygonInfo *) NULL)
1417 {
1418 bounds=polygon_info->edges[0].bounds;
1419 for (i=1; i < (ssize_t) polygon_info->number_edges; i++)
1420 {
1421 if (polygon_info->edges[i].bounds.x1 < (double) bounds.x1)
1422 bounds.x1=polygon_info->edges[i].bounds.x1;
1423 if (polygon_info->edges[i].bounds.y1 < (double) bounds.y1)
1424 bounds.y1=polygon_info->edges[i].bounds.y1;
1425 if (polygon_info->edges[i].bounds.x2 > (double) bounds.x2)
1426 bounds.x2=polygon_info->edges[i].bounds.x2;
1427 if (polygon_info->edges[i].bounds.y2 > (double) bounds.y2)
1428 bounds.y2=polygon_info->edges[i].bounds.y2;
1429 }
1430 bounds.x1-=mid;
1431 bounds.x1=bounds.x1 < 0.0 ? 0.0 : bounds.x1 >= (double)
1432 image->columns ? (double) image->columns-1 : bounds.x1;
1433 bounds.y1-=mid;
1434 bounds.y1=bounds.y1 < 0.0 ? 0.0 : bounds.y1 >= (double)
1435 image->rows ? (double) image->rows-1 : bounds.y1;
1436 bounds.x2+=mid;
1437 bounds.x2=bounds.x2 < 0.0 ? 0.0 : bounds.x2 >= (double)
1438 image->columns ? (double) image->columns-1 : bounds.x2;
1439 bounds.y2+=mid;
1440 bounds.y2=bounds.y2 < 0.0 ? 0.0 : bounds.y2 >= (double)
1441 image->rows ? (double) image->rows-1 : bounds.y2;
1442 for (i=0; i < (ssize_t) polygon_info->number_edges; i++)
1443 {
1444 if (polygon_info->edges[i].direction != 0)
1445 status=QueryColorDatabase("#f00",&clone_info->stroke,
1446 &image->exception);
1447 else
1448 status=QueryColorDatabase("#0f0",&clone_info->stroke,
1449 &image->exception);
1450 if (status == MagickFalse)
1451 break;
1452 start.x=(double) (polygon_info->edges[i].bounds.x1-mid);
1453 start.y=(double) (polygon_info->edges[i].bounds.y1-mid);
1454 end.x=(double) (polygon_info->edges[i].bounds.x2+mid);
1455 end.y=(double) (polygon_info->edges[i].bounds.y2+mid);
1456 primitive_info[0].primitive=RectanglePrimitive;
1457 status&=TraceRectangle(primitive_info,start,end);
1458 primitive_info[0].method=ReplaceMethod;
1459 coordinates=(ssize_t) primitive_info[0].coordinates;
1460 primitive_info[coordinates].primitive=UndefinedPrimitive;
1461 status=DrawPrimitive(image,clone_info,primitive_info);
1462 if (status == MagickFalse)
1463 break;
1464 }
1465 if (i < (ssize_t) polygon_info->number_edges)
1466 {
1467 clone_info=DestroyDrawInfo(clone_info);
1468 return(status == 0 ? MagickFalse : MagickTrue);
1469 }
1470 }
1471 status=QueryColorDatabase("#00f",&clone_info->stroke,&image->exception);
1472 if (status == MagickFalse)
1473 {
1474 clone_info=DestroyDrawInfo(clone_info);
1475 return(MagickFalse);
1476 }
1477 start.x=(double) (bounds.x1-mid);
1478 start.y=(double) (bounds.y1-mid);
1479 end.x=(double) (bounds.x2+mid);
1480 end.y=(double) (bounds.y2+mid);
1481 primitive_info[0].primitive=RectanglePrimitive;
1482 status&=TraceRectangle(primitive_info,start,end);
1483 primitive_info[0].method=ReplaceMethod;
1484 coordinates=(ssize_t) primitive_info[0].coordinates;
1485 primitive_info[coordinates].primitive=UndefinedPrimitive;
1486 status=DrawPrimitive(image,clone_info,primitive_info);
1487 clone_info=DestroyDrawInfo(clone_info);
1488 return(status == 0 ? MagickFalse : MagickTrue);
1489}
1490␌
1491/*
1492%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1493% %
1494% %
1495% %
1496% D r a w C l i p P a t h %
1497% %
1498% %
1499% %
1500%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1501%
1502% DrawClipPath() draws the clip path on the image mask.
1503%
1504% The format of the DrawClipPath method is:
1505%
1506% MagickBooleanType DrawClipPath(Image *image,const DrawInfo *draw_info,
1507% const char *id)
1508%
1509% A description of each parameter follows:
1510%
1511% o image: the image.
1512%
1513% o draw_info: the draw info.
1514%
1515% o id: the clip path id.
1516%
1517*/
1518MagickExport MagickBooleanType DrawClipPath(Image *image,
1519 const DrawInfo *draw_info,const char *id)
1520{
1521 const char
1522 *clip_path;
1523
1524 Image
1525 *clipping_mask;
1526
1527 MagickBooleanType
1528 status;
1529
1530 clip_path=GetImageArtifact(image,id);
1531 if (clip_path == (const char *) NULL)
1532 return(MagickFalse);
1533 clipping_mask=DrawClippingMask(image,draw_info,draw_info->clip_mask,clip_path,
1534 &image->exception);
1535 if (clipping_mask == (Image *) NULL)
1536 return(MagickFalse);
1537 status=SetImageClipMask(image,clipping_mask);
1538 clipping_mask=DestroyImage(clipping_mask);
1539 return(status);
1540}
1541␌
1542/*
1543%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1544% %
1545% %
1546% %
1547% D r a w C l i p p i n g M a s k %
1548% %
1549% %
1550% %
1551%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1552%
1553% DrawClippingMask() draws the clip path and returns it as an image clipping
1554% mask.
1555%
1556% The format of the DrawClippingMask method is:
1557%
1558% Image *DrawClippingMask(Image *image,const DrawInfo *draw_info,
1559% const char *id,const char *clip_path,ExceptionInfo *exception)
1560%
1561% A description of each parameter follows:
1562%
1563% o image: the image.
1564%
1565% o draw_info: the draw info.
1566%
1567% o id: the clip path id.
1568%
1569% o clip_path: the clip path.
1570%
1571% o exception: return any errors or warnings in this structure.
1572%
1573*/
1574static Image *DrawClippingMask(Image *image,const DrawInfo *draw_info,
1575 const char *id,const char *clip_path,ExceptionInfo *exception)
1576{
1577 DrawInfo
1578 *clone_info;
1579
1580 Image
1581 *clip_mask;
1582
1583 MagickStatusType
1584 status;
1585
1586 /*
1587 Draw a clip path.
1588 */
1589 assert(image != (Image *) NULL);
1590 assert(image->signature == MagickCoreSignature);
1591 assert(draw_info != (const DrawInfo *) NULL);
1592 if (IsEventLogging() != MagickFalse)
1593 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
1594 clip_mask=AcquireImage((const ImageInfo *) NULL);
1595 status=SetImageExtent(clip_mask,image->columns,image->rows);
1596 if (status == MagickFalse)
1597 return(DestroyImage(clip_mask));
1598 status=SetImageClipMask(image,(Image *) NULL);
1599 status=QueryColorCompliance("#0000",AllCompliance,
1600 &clip_mask->background_color,exception);
1601 clip_mask->background_color.opacity=(Quantum) TransparentOpacity;
1602 status=SetImageBackgroundColor(clip_mask);
1603 if (draw_info->debug != MagickFalse)
1604 (void) LogMagickEvent(DrawEvent,GetMagickModule(),"\nbegin clip-path %s",
1605 id);
1606 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
1607 (void) CloneString(&clone_info->primitive,clip_path);
1608 status=QueryColorCompliance("#ffffff",AllCompliance,&clone_info->fill,
1609 exception);
1610 if (clone_info->clip_mask != (char *) NULL)
1611 clone_info->clip_mask=DestroyString(clone_info->clip_mask);
1612 (void) QueryColorCompliance("#00000000",AllCompliance,&clone_info->stroke,
1613 exception);
1614 clone_info->stroke_width=0.0;
1615 clone_info->opacity=OpaqueOpacity;
1616 clone_info->clip_path=MagickTrue;
1617 status=RenderMVGContent(clip_mask,clone_info,0);
1618 clone_info=DestroyDrawInfo(clone_info);
1619 status&=SeparateImageChannel(clip_mask,TrueAlphaChannel);
1620 if (draw_info->compliance != SVGCompliance)
1621 status&=NegateImage(clip_mask,MagickFalse);
1622 if (status == MagickFalse)
1623 clip_mask=DestroyImage(clip_mask);
1624 if (draw_info->debug != MagickFalse)
1625 (void) LogMagickEvent(DrawEvent,GetMagickModule(),"end clip-path");
1626 return(clip_mask);
1627}
1628␌
1629/*
1630%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1631% %
1632% %
1633% %
1634% D r a w C o m p o s i t e M a s k %
1635% %
1636% %
1637% %
1638%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1639%
1640% DrawCompositeMask() draws the mask path and returns it as an image mask.
1641%
1642% The format of the DrawCompositeMask method is:
1643%
1644% Image *DrawCompositeMask(Image *image,const DrawInfo *draw_info,
1645% const char *id,const char *mask_path,ExceptionInfo *exception)
1646%
1647% A description of each parameter follows:
1648%
1649% o image: the image.
1650%
1651% o draw_info: the draw info.
1652%
1653% o id: the mask path id.
1654%
1655% o mask_path: the mask path.
1656%
1657% o exception: return any errors or warnings in this structure.
1658%
1659*/
1660static Image *DrawCompositeMask(Image *image,const DrawInfo *draw_info,
1661 const char *id,const char *mask_path,ExceptionInfo *exception)
1662{
1663 Image
1664 *composite_mask;
1665
1666 DrawInfo
1667 *clone_info;
1668
1669 MagickStatusType
1670 status;
1671
1672 /*
1673 Draw a mask path.
1674 */
1675 assert(image != (Image *) NULL);
1676 assert(image->signature == MagickCoreSignature);
1677 assert(draw_info != (const DrawInfo *) NULL);
1678 if (IsEventLogging() != MagickFalse)
1679 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
1680 composite_mask=AcquireImage((const ImageInfo *) NULL);
1681 status=SetImageExtent(composite_mask,image->columns,image->rows);
1682 if (status == MagickFalse)
1683 return(DestroyImage(composite_mask));
1684 status=SetImageMask(image,(Image *) NULL);
1685 status=QueryColorCompliance("#0000",AllCompliance,
1686 &composite_mask->background_color,exception);
1687 composite_mask->background_color.opacity=(Quantum) TransparentOpacity;
1688 (void) SetImageBackgroundColor(composite_mask);
1689 if (draw_info->debug != MagickFalse)
1690 (void) LogMagickEvent(DrawEvent,GetMagickModule(),"\nbegin mask-path %s",
1691 id);
1692 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
1693 (void) CloneString(&clone_info->primitive,mask_path);
1694 status=QueryColorCompliance("#ffffff",AllCompliance,&clone_info->fill,
1695 exception);
1696 status=QueryColorCompliance("#00000000",AllCompliance,&clone_info->stroke,
1697 exception);
1698 clone_info->stroke_width=0.0;
1699 clone_info->opacity=OpaqueOpacity;
1700 status=RenderMVGContent(composite_mask,clone_info,0);
1701 clone_info=DestroyDrawInfo(clone_info);
1702 status&=SeparateImageChannel(composite_mask,TrueAlphaChannel);
1703 status&=NegateImage(composite_mask,MagickFalse);
1704 if (status == MagickFalse)
1705 composite_mask=DestroyImage(composite_mask);
1706 if (draw_info->debug != MagickFalse)
1707 (void) LogMagickEvent(DrawEvent,GetMagickModule(),"end mask-path");
1708 return(composite_mask);
1709}
1710␌
1711/*
1712%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1713% %
1714% %
1715% %
1716+ D r a w D a s h P o l y g o n %
1717% %
1718% %
1719% %
1720%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1721%
1722% DrawDashPolygon() draws a dashed polygon (line, rectangle, ellipse) on the
1723% image while respecting the dash offset and dash pattern attributes.
1724%
1725% The format of the DrawDashPolygon method is:
1726%
1727% MagickBooleanType DrawDashPolygon(const DrawInfo *draw_info,
1728% const PrimitiveInfo *primitive_info,Image *image)
1729%
1730% A description of each parameter follows:
1731%
1732% o draw_info: the draw info.
1733%
1734% o primitive_info: Specifies a pointer to a PrimitiveInfo structure.
1735%
1736% o image: the image.
1737%
1738%
1739*/
1740static MagickBooleanType DrawDashPolygon(const DrawInfo *draw_info,
1741 const PrimitiveInfo *primitive_info,Image *image)
1742{
1743 double
1744 dx,
1745 dy,
1746 length,
1747 maximum_length,
1748 offset,
1749 scale,
1750 total_length;
1751
1752 DrawInfo
1753 *clone_info;
1754
1755 MagickStatusType
1756 status;
1757
1758 PrimitiveInfo
1759 *dash_polygon;
1760
1761 ssize_t
1762 i;
1763
1764 size_t
1765 number_vertices;
1766
1767 ssize_t
1768 j,
1769 n;
1770
1771 assert(draw_info != (const DrawInfo *) NULL);
1772 if (draw_info->debug != MagickFalse)
1773 (void) LogMagickEvent(DrawEvent,GetMagickModule()," begin draw-dash");
1774 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++) ;
1775 number_vertices=(size_t) i;
1776 dash_polygon=(PrimitiveInfo *) AcquireQuantumMemory((size_t)
1777 (2UL*number_vertices+32UL),sizeof(*dash_polygon));
1778 if (dash_polygon == (PrimitiveInfo *) NULL)
1779 {
1780 (void) ThrowMagickException(&image->exception,GetMagickModule(),
1781 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
1782 return(MagickFalse);
1783 }
1784 (void) memset(dash_polygon,0,(2UL*number_vertices+32UL)*
1785 sizeof(*dash_polygon));
1786 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
1787 clone_info->miterlimit=0;
1788 dash_polygon[0]=primitive_info[0];
1789 dash_polygon[0].closed_subpath=MagickFalse;
1790 scale=ExpandAffine(&draw_info->affine);
1791 length=scale*draw_info->dash_pattern[0];
1792 offset=fabs(draw_info->dash_offset) >= MagickEpsilon ?
1793 scale*draw_info->dash_offset : 0.0;
1794 j=1;
1795 for (n=0; offset > 0.0; j=0)
1796 {
1797 if (draw_info->dash_pattern[n] <= 0.0)
1798 break;
1799 length=scale*(draw_info->dash_pattern[n]+(n == 0 ? -0.5 : 0.5));
1800 if (offset > length)
1801 {
1802 offset-=length;
1803 n++;
1804 length=scale*draw_info->dash_pattern[n];
1805 continue;
1806 }
1807 if (offset < length)
1808 {
1809 length-=offset;
1810 offset=0.0;
1811 break;
1812 }
1813 offset=0.0;
1814 n++;
1815 }
1816 status=MagickTrue;
1817 maximum_length=0.0;
1818 total_length=0.0;
1819 for (i=1; (i < (ssize_t) number_vertices) && (length >= 0.0); i++)
1820 {
1821 dx=primitive_info[i].point.x-primitive_info[i-1].point.x;
1822 dy=primitive_info[i].point.y-primitive_info[i-1].point.y;
1823 maximum_length=hypot(dx,dy);
1824 if (maximum_length > (double) (MaxBezierCoordinates >> 2))
1825 continue;
1826 if (fabs(length) < MagickEpsilon)
1827 {
1828 if (fabs(draw_info->dash_pattern[n]) >= MagickEpsilon)
1829 n++;
1830 if (fabs(draw_info->dash_pattern[n]) < MagickEpsilon)
1831 n=0;
1832 length=scale*draw_info->dash_pattern[n];
1833 }
1834 for (total_length=0.0; (length >= 0.0) && (maximum_length >= (total_length+length)); )
1835 {
1836 total_length+=length;
1837 if ((n & 0x01) != 0)
1838 {
1839 dash_polygon[0]=primitive_info[0];
1840 dash_polygon[0].closed_subpath=MagickFalse;
1841 dash_polygon[0].point.x=(double) (primitive_info[i-1].point.x+dx*
1842 total_length*MagickSafeReciprocal(maximum_length));
1843 dash_polygon[0].point.y=(double) (primitive_info[i-1].point.y+dy*
1844 total_length*MagickSafeReciprocal(maximum_length));
1845 j=1;
1846 }
1847 else
1848 {
1849 if ((j+1) > (ssize_t) number_vertices)
1850 break;
1851 dash_polygon[j]=primitive_info[i-1];
1852 dash_polygon[j].closed_subpath=MagickFalse;
1853 dash_polygon[j].point.x=(double) (primitive_info[i-1].point.x+dx*
1854 total_length*MagickSafeReciprocal(maximum_length));
1855 dash_polygon[j].point.y=(double) (primitive_info[i-1].point.y+dy*
1856 total_length*MagickSafeReciprocal(maximum_length));
1857 dash_polygon[j].coordinates=1;
1858 j++;
1859 dash_polygon[0].coordinates=(size_t) j;
1860 dash_polygon[j].primitive=UndefinedPrimitive;
1861 status&=DrawStrokePolygon(image,clone_info,dash_polygon);
1862 if (status == MagickFalse)
1863 break;
1864 }
1865 if (fabs(draw_info->dash_pattern[n]) >= MagickEpsilon)
1866 n++;
1867 if (fabs(draw_info->dash_pattern[n]) < MagickEpsilon)
1868 n=0;
1869 length=scale*draw_info->dash_pattern[n];
1870 }
1871 length-=(maximum_length-total_length);
1872 if ((n & 0x01) != 0)
1873 continue;
1874 dash_polygon[j]=primitive_info[i];
1875 dash_polygon[j].coordinates=1;
1876 j++;
1877 }
1878 if ((status != MagickFalse) && (total_length < maximum_length) &&
1879 ((n & 0x01) == 0) && (j > 1))
1880 {
1881 dash_polygon[j]=primitive_info[i-1];
1882 dash_polygon[j].closed_subpath=MagickFalse;
1883 dash_polygon[j].point.x+=MagickEpsilon;
1884 dash_polygon[j].point.y+=MagickEpsilon;
1885 dash_polygon[j].coordinates=1;
1886 j++;
1887 dash_polygon[0].coordinates=(size_t) j;
1888 dash_polygon[j].primitive=UndefinedPrimitive;
1889 status&=DrawStrokePolygon(image,clone_info,dash_polygon);
1890 }
1891 dash_polygon=(PrimitiveInfo *) RelinquishMagickMemory(dash_polygon);
1892 clone_info=DestroyDrawInfo(clone_info);
1893 if (draw_info->debug != MagickFalse)
1894 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end draw-dash");
1895 return(status != 0 ? MagickTrue : MagickFalse);
1896}
1897␌
1898/*
1899%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1900% %
1901% %
1902% %
1903% D r a w G r a d i e n t I m a g e %
1904% %
1905% %
1906% %
1907%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1908%
1909% DrawGradientImage() draws a linear gradient on the image.
1910%
1911% The format of the DrawGradientImage method is:
1912%
1913% MagickBooleanType DrawGradientImage(Image *image,
1914% const DrawInfo *draw_info)
1915%
1916% A description of each parameter follows:
1917%
1918% o image: the image.
1919%
1920% o draw_info: the draw info.
1921%
1922*/
1923
1924static inline double GetStopColorOffset(const GradientInfo *gradient,
1925 const ssize_t x,const ssize_t y)
1926{
1927 switch (gradient->type)
1928 {
1929 case UndefinedGradient:
1930 case LinearGradient:
1931 {
1932 double
1933 gamma,
1934 length,
1935 offset,
1936 scale;
1937
1938 PointInfo
1939 p,
1940 q;
1941
1942 const SegmentInfo
1943 *gradient_vector;
1944
1945 gradient_vector=(&gradient->gradient_vector);
1946 p.x=gradient_vector->x2-gradient_vector->x1;
1947 p.y=gradient_vector->y2-gradient_vector->y1;
1948 q.x=(double) x-gradient_vector->x1;
1949 q.y=(double) y-gradient_vector->y1;
1950 length=sqrt(q.x*q.x+q.y*q.y);
1951 gamma=sqrt(p.x*p.x+p.y*p.y)*length;
1952 gamma=MagickSafeReciprocal(gamma);
1953 scale=p.x*q.x+p.y*q.y;
1954 offset=gamma*scale*length;
1955 return(offset);
1956 }
1957 case RadialGradient:
1958 {
1959 PointInfo
1960 v;
1961
1962 if (gradient->spread == RepeatSpread)
1963 {
1964 v.x=(double) x-gradient->center.x;
1965 v.y=(double) y-gradient->center.y;
1966 return(sqrt(v.x*v.x+v.y*v.y));
1967 }
1968 v.x=(double) (((x-gradient->center.x)*cos(DegreesToRadians(
1969 gradient->angle)))+((y-gradient->center.y)*sin(DegreesToRadians(
1970 gradient->angle))))*MagickSafeReciprocal(gradient->radii.x);
1971 v.y=(double) (((x-gradient->center.x)*sin(DegreesToRadians(
1972 gradient->angle)))-((y-gradient->center.y)*cos(DegreesToRadians(
1973 gradient->angle))))*MagickSafeReciprocal(gradient->radii.y);
1974 return(sqrt(v.x*v.x+v.y*v.y));
1975 }
1976 }
1977 return(0.0);
1978}
1979
1980MagickExport MagickBooleanType DrawGradientImage(Image *image,
1981 const DrawInfo *draw_info)
1982{
1983 CacheView
1984 *image_view;
1985
1986 const GradientInfo
1987 *gradient;
1988
1989 const SegmentInfo
1990 *gradient_vector;
1991
1992 double
1993 length;
1994
1995 ExceptionInfo
1996 *exception;
1997
1998 MagickBooleanType
1999 status;
2000
2001 MagickPixelPacket
2002 zero;
2003
2004 PointInfo
2005 point;
2006
2007 RectangleInfo
2008 bounding_box;
2009
2010 ssize_t
2011 height,
2012 y;
2013
2014 /*
2015 Draw linear or radial gradient on image.
2016 */
2017 assert(image != (Image *) NULL);
2018 assert(image->signature == MagickCoreSignature);
2019 assert(draw_info != (const DrawInfo *) NULL);
2020 if (IsEventLogging() != MagickFalse)
2021 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
2022 gradient=(&draw_info->gradient);
2023 gradient_vector=(&gradient->gradient_vector);
2024 point.x=gradient_vector->x2-gradient_vector->x1;
2025 point.y=gradient_vector->y2-gradient_vector->y1;
2026 length=sqrt(point.x*point.x+point.y*point.y);
2027 bounding_box=gradient->bounding_box;
2028 status=MagickTrue;
2029 exception=(&image->exception);
2030 GetMagickPixelPacket(image,&zero);
2031 image_view=AcquireAuthenticCacheView(image,exception);
2032 height=(size_t) (bounding_box.y+bounding_box.height);
2033#if defined(MAGICKCORE_OPENMP_SUPPORT)
2034 #pragma omp parallel for schedule(static) shared(status) \
2035 magick_number_threads(image,image,height,1)
2036#endif
2037 for (y=bounding_box.y; y < (ssize_t) height; y++)
2038 {
2039 double
2040 alpha,
2041 offset;
2042
2043 MagickPixelPacket
2044 composite,
2045 pixel;
2046
2047 IndexPacket
2048 *magick_restrict indexes;
2049
2050 PixelPacket
2051 *magick_restrict q;
2052
2053 ssize_t
2054 i,
2055 j,
2056 width,
2057 x;
2058
2059 if (status == MagickFalse)
2060 continue;
2061 q=GetCacheViewAuthenticPixels(image_view,bounding_box.x,y,(size_t)
2062 bounding_box.width,1,exception);
2063 if (q == (PixelPacket *) NULL)
2064 {
2065 status=MagickFalse;
2066 continue;
2067 }
2068 indexes=GetCacheViewAuthenticIndexQueue(image_view);
2069 pixel=zero;
2070 composite=zero;
2071 offset=GetStopColorOffset(gradient,0,y);
2072 if (gradient->type != RadialGradient)
2073 offset*=MagickSafeReciprocal(length);
2074 width=(size_t) (bounding_box.x+bounding_box.width);
2075 for (x=bounding_box.x; x < (ssize_t) width; x++)
2076 {
2077 SetMagickPixelPacket(image,q,indexes+x,&pixel);
2078 switch (gradient->spread)
2079 {
2080 case UndefinedSpread:
2081 case PadSpread:
2082 {
2083 if ((x != CastDoubleToLong(ceil(gradient_vector->x1-0.5))) ||
2084 (y != CastDoubleToLong(ceil(gradient_vector->y1-0.5))))
2085 {
2086 offset=GetStopColorOffset(gradient,x,y);
2087 if (gradient->type != RadialGradient)
2088 offset*=MagickSafeReciprocal(length);
2089 }
2090 for (i=0; i < (ssize_t) gradient->number_stops; i++)
2091 if (offset < gradient->stops[i].offset)
2092 break;
2093 if ((offset < 0.0) || (i == 0))
2094 composite=gradient->stops[0].color;
2095 else
2096 if ((offset > 1.0) || (i == (ssize_t) gradient->number_stops))
2097 composite=gradient->stops[gradient->number_stops-1].color;
2098 else
2099 {
2100 j=i;
2101 i--;
2102 alpha=(offset-gradient->stops[i].offset)/
2103 (gradient->stops[j].offset-gradient->stops[i].offset);
2104 MagickPixelCompositeBlend(&gradient->stops[i].color,1.0-alpha,
2105 &gradient->stops[j].color,alpha,&composite);
2106 }
2107 break;
2108 }
2109 case ReflectSpread:
2110 {
2111 if ((x != CastDoubleToLong(ceil(gradient_vector->x1-0.5))) ||
2112 (y != CastDoubleToLong(ceil(gradient_vector->y1-0.5))))
2113 {
2114 offset=GetStopColorOffset(gradient,x,y);
2115 if (gradient->type != RadialGradient)
2116 offset*=MagickSafeReciprocal(length);
2117 }
2118 if (offset < 0.0)
2119 offset=(-offset);
2120 if ((ssize_t) fmod(offset,2.0) == 0)
2121 offset=fmod(offset,1.0);
2122 else
2123 offset=1.0-fmod(offset,1.0);
2124 for (i=0; i < (ssize_t) gradient->number_stops; i++)
2125 if (offset < gradient->stops[i].offset)
2126 break;
2127 if (i == 0)
2128 composite=gradient->stops[0].color;
2129 else
2130 if (i == (ssize_t) gradient->number_stops)
2131 composite=gradient->stops[gradient->number_stops-1].color;
2132 else
2133 {
2134 j=i;
2135 i--;
2136 alpha=(offset-gradient->stops[i].offset)/
2137 (gradient->stops[j].offset-gradient->stops[i].offset);
2138 MagickPixelCompositeBlend(&gradient->stops[i].color,1.0-alpha,
2139 &gradient->stops[j].color,alpha,&composite);
2140 }
2141 break;
2142 }
2143 case RepeatSpread:
2144 {
2145 double
2146 repeat;
2147
2148 MagickBooleanType
2149 antialias;
2150
2151 antialias=MagickFalse;
2152 repeat=0.0;
2153 if ((x != CastDoubleToLong(ceil(gradient_vector->x1-0.5))) ||
2154 (y != CastDoubleToLong(ceil(gradient_vector->y1-0.5))))
2155 {
2156 offset=GetStopColorOffset(gradient,x,y);
2157 if (gradient->type == LinearGradient)
2158 {
2159 repeat=fmod(offset,length);
2160 if (repeat < 0.0)
2161 repeat=length-fmod(-repeat,length);
2162 else
2163 repeat=fmod(offset,length);
2164 antialias=(repeat < length) && ((repeat+1.0) > length) ?
2165 MagickTrue : MagickFalse;
2166 offset=MagickSafeReciprocal(length)*repeat;
2167 }
2168 else
2169 {
2170 repeat=fmod(offset,(double) gradient->radius);
2171 if (repeat < 0.0)
2172 repeat=gradient->radius-fmod(-repeat,
2173 (double) gradient->radius);
2174 else
2175 repeat=fmod(offset,(double) gradient->radius);
2176 antialias=repeat+1.0 > gradient->radius ? MagickTrue :
2177 MagickFalse;
2178 offset=repeat*MagickSafeReciprocal(gradient->radius);
2179 }
2180 }
2181 for (i=0; i < (ssize_t) gradient->number_stops; i++)
2182 if (offset < gradient->stops[i].offset)
2183 break;
2184 if (i == 0)
2185 composite=gradient->stops[0].color;
2186 else
2187 if (i == (ssize_t) gradient->number_stops)
2188 composite=gradient->stops[gradient->number_stops-1].color;
2189 else
2190 {
2191 j=i;
2192 i--;
2193 alpha=(offset-gradient->stops[i].offset)/
2194 (gradient->stops[j].offset-gradient->stops[i].offset);
2195 if (antialias != MagickFalse)
2196 {
2197 if (gradient->type == LinearGradient)
2198 alpha=length-repeat;
2199 else
2200 alpha=gradient->radius-repeat;
2201 i=0;
2202 j=(ssize_t) gradient->number_stops-1L;
2203 }
2204 MagickPixelCompositeBlend(&gradient->stops[i].color,1.0-alpha,
2205 &gradient->stops[j].color,alpha,&composite);
2206 }
2207 break;
2208 }
2209 }
2210 MagickPixelCompositeOver(&composite,composite.opacity,&pixel,
2211 pixel.opacity,&pixel);
2212 SetPixelPacket(image,&pixel,q,indexes+x);
2213 q++;
2214 }
2215 if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
2216 status=MagickFalse;
2217 }
2218 image_view=DestroyCacheView(image_view);
2219 return(status);
2220}
2221␌
2222/*
2223%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2224% %
2225% %
2226% %
2227% D r a w I m a g e %
2228% %
2229% %
2230% %
2231%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2232%
2233% DrawImage() draws a graphic primitive on your image. The primitive
2234% may be represented as a string or filename. Precede the filename with an
2235% "at" sign (@) and the contents of the file are drawn on the image. You
2236% can affect how text is drawn by setting one or more members of the draw
2237% info structure.
2238%
2239% The format of the DrawImage method is:
2240%
2241% MagickBooleanType DrawImage(Image *image,const DrawInfo *draw_info)
2242%
2243% A description of each parameter follows:
2244%
2245% o image: the image.
2246%
2247% o draw_info: the draw info.
2248%
2249*/
2250
2251static inline MagickBooleanType CheckPrimitiveExtent(MVGInfo *mvg_info,
2252 const double pad)
2253{
2254 double
2255 proposed_extent;
2256
2257 PrimitiveInfo
2258 *primitive_info;
2259
2260 size_t
2261 extent;
2262
2263 ssize_t
2264 i;
2265
2266 if ((mvg_info == (MVGInfo *) NULL) ||
2267 (mvg_info->primitive_info == (PrimitiveInfo **) NULL) ||
2268 (*mvg_info->primitive_info == (PrimitiveInfo *) NULL) ||
2269 (mvg_info->extent == (size_t *) NULL))
2270 return(MagickFalse);
2271 proposed_extent=mvg_info->offset+pad+PrimitiveExtentPad+1.0;
2272 if ((proposed_extent <= 0.0) || (proposed_extent > (double) MAGICK_SIZE_MAX))
2273 return(MagickFalse);
2274 extent=CastDoubleToSizeT(ceil(proposed_extent));
2275 if (extent <= *mvg_info->extent)
2276 return(MagickTrue);
2277 if (extent > (GetMaxMemoryRequest()/sizeof(PrimitiveInfo)))
2278 return(MagickFalse);
2279 primitive_info=(PrimitiveInfo *) ResizeQuantumMemory(
2280 *mvg_info->primitive_info,extent+1,sizeof(PrimitiveInfo));
2281 if (primitive_info == (PrimitiveInfo *) NULL)
2282 {
2283 /*
2284 Create a stack to unwind; report failure.
2285 */
2286 extent=(size_t) PrimitiveExtentPad;
2287 primitive_info=(PrimitiveInfo *) AcquireCriticalMemory(extent*
2288 sizeof(*primitive_info));
2289 (void) memset(primitive_info,0,extent*sizeof(*primitive_info));
2290 *mvg_info->primitive_info=primitive_info;
2291 *mvg_info->extent=extent;
2292 mvg_info->offset=0;
2293 ThrowMagickException(mvg_info->exception,GetMagickModule(),
2294 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
2295 return(MagickFalse);
2296 }
2297 primitive_info[extent].primitive=UndefinedPrimitive;
2298 primitive_info[extent].text=(char *) NULL;
2299 /*
2300 Commit updated buffer.
2301 */
2302 for (i=(ssize_t) *mvg_info->extent; i < (ssize_t) extent; i++)
2303 {
2304 primitive_info[i].primitive=UndefinedPrimitive;
2305 primitive_info[i].text=(char *) NULL;
2306 }
2307 *mvg_info->primitive_info=primitive_info;
2308 *mvg_info->extent=extent;
2309 return(MagickTrue);
2310}
2311
2312static inline double GetDrawValue(const char *magick_restrict string,
2313 char **magick_restrict sentinel)
2314{
2315 char
2316 **magick_restrict q;
2317
2318 double
2319 value;
2320
2321 q=sentinel;
2322 value=InterpretLocaleValue(string,q);
2323 sentinel=q;
2324 return(value);
2325}
2326
2327static int MVGMacroCompare(const void *target,const void *source)
2328{
2329 const char
2330 *p,
2331 *q;
2332
2333 p=(const char *) target;
2334 q=(const char *) source;
2335 return(strcmp(p,q));
2336}
2337
2338static SplayTreeInfo *GetMVGMacros(const char *primitive,
2339 ExceptionInfo *exception)
2340{
2341 char
2342 *macro,
2343 *token;
2344
2345 const char
2346 *q;
2347
2348 size_t
2349 extent;
2350
2351 SplayTreeInfo
2352 *macros;
2353
2354 /*
2355 Scan graphic primitives for definitions and classes.
2356 */
2357 if (primitive == (const char *) NULL)
2358 return((SplayTreeInfo *) NULL);
2359 macros=NewSplayTree(MVGMacroCompare,RelinquishMagickMemory,
2360 RelinquishMagickMemory);
2361 macro=AcquireString(primitive);
2362 token=AcquireString(primitive);
2363 extent=strlen(token)+MagickPathExtent;
2364 for (q=primitive; *q != '\0'; )
2365 {
2366 if (GetNextToken(q,&q,extent,token) < 1)
2367 break;
2368 if (*token == '\0')
2369 break;
2370 if (LocaleCompare("push",token) == 0)
2371 {
2372 const char
2373 *end,
2374 *start;
2375
2376 (void) GetNextToken(q,&q,extent,token);
2377 if (*q == '"')
2378 {
2379 char
2380 name[MagickPathExtent];
2381
2382 const char
2383 *p;
2384
2385 ssize_t
2386 n;
2387
2388 /*
2389 Named macro (e.g. push graphic-context "wheel").
2390 */
2391 (void) GetNextToken(q,&q,extent,token);
2392 start=q;
2393 end=q;
2394 (void) CopyMagickString(name,token,MagickPathExtent);
2395 n=1;
2396 for (p=q; *p != '\0'; )
2397 {
2398 if (GetNextToken(p,&p,extent,token) < 1)
2399 break;
2400 if (*token == '\0')
2401 break;
2402 if (LocaleCompare(token,"pop") == 0)
2403 {
2404 end=p-strlen(token)-1;
2405 n--;
2406 }
2407 if (LocaleCompare(token,"push") == 0)
2408 {
2409 if (n++ > MagickMaxRecursionDepth)
2410 {
2411 (void) ThrowMagickException(exception,GetMagickModule(),
2412 DrawError,"VectorGraphicsNestedTooDeeply","`%s'",token);
2413 break;
2414 }
2415 }
2416 if ((n == 0) && (end >= start))
2417 {
2418 size_t
2419 length=(size_t) (end-start);
2420
2421 /*
2422 Extract macro.
2423 */
2424 (void) GetNextToken(p,&p,extent,token);
2425 if (length > 0)
2426 {
2427 (void) CopyMagickString(macro,start,length);
2428 (void) AddValueToSplayTree(macros,ConstantString(name),
2429 ConstantString(macro));
2430 }
2431 break;
2432 }
2433 }
2434 }
2435 }
2436 }
2437 token=DestroyString(token);
2438 macro=DestroyString(macro);
2439 return(macros);
2440}
2441
2442static inline MagickBooleanType IsValidListChar(int c)
2443{
2444 if ((c >= '0') && (c <= '9'))
2445 return(MagickTrue);
2446 switch (c)
2447 {
2448 case '.':
2449 case '+':
2450 case '-':
2451 case ',':
2452 case ' ':
2453 case '\t':
2454 case '\r':
2455 case '\n':
2456 break;
2457 default:
2458 return(MagickFalse);
2459 }
2460 return(MagickTrue);
2461}
2462
2463static inline MagickBooleanType IsValidPoint(const char *point)
2464{
2465 char
2466 *p;
2467
2468 double
2469 value;
2470
2471 value=GetDrawValue(point,&p);
2472 return((fabs(value) < MagickEpsilon) && (p == point) ? MagickFalse :
2473 MagickTrue);
2474}
2475
2476static inline MagickBooleanType TracePoint(PrimitiveInfo *primitive_info,
2477 const PointInfo point)
2478{
2479 primitive_info->point=point;
2480 primitive_info->coordinates=1;
2481 primitive_info->closed_subpath=MagickFalse;
2482 primitive_info->text=(char *) NULL;
2483 return(MagickTrue);
2484}
2485
2486static MagickBooleanType RenderMVGContent(Image *image,
2487 const DrawInfo *draw_info,const size_t depth)
2488{
2489#define RenderImageTag "Render/Image"
2490
2491 AffineMatrix
2492 affine,
2493 current;
2494
2495 char
2496 key[2*MaxTextExtent],
2497 keyword[MaxTextExtent],
2498 geometry[MaxTextExtent],
2499 name[MaxTextExtent],
2500 *next_token,
2501 pattern[MaxTextExtent],
2502 *primitive,
2503 *token;
2504
2505 const char
2506 *p,
2507 *q;
2508
2509 double
2510 angle,
2511 coordinates,
2512 cursor,
2513 factor,
2514 primitive_extent;
2515
2516 DrawInfo
2517 *clone_info,
2518 **graphic_context;
2519
2520 MagickBooleanType
2521 proceed;
2522
2523 MagickStatusType
2524 status;
2525
2526 MVGInfo
2527 mvg_info;
2528
2529 PointInfo
2530 point;
2531
2532 PixelPacket
2533 start_color;
2534
2535 PrimitiveInfo
2536 *primitive_info;
2537
2538 PrimitiveType
2539 primitive_type;
2540
2541 SegmentInfo
2542 bounds;
2543
2544 size_t
2545 extent,
2546 number_points;
2547
2548 SplayTreeInfo
2549 *macros;
2550
2551 ssize_t
2552 classDepth = 0,
2553 defsDepth,
2554 i,
2555 j,
2556 k,
2557 n,
2558 symbolDepth,
2559 x;
2560
2561 TypeMetric
2562 metrics;
2563
2564 assert(image != (Image *) NULL);
2565 assert(image->signature == MagickCoreSignature);
2566 assert(draw_info != (DrawInfo *) NULL);
2567 assert(draw_info->signature == MagickCoreSignature);
2568 if (IsEventLogging() != MagickFalse)
2569 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
2570 if (depth > MagickMaxRecursionDepth)
2571 ThrowBinaryImageException(DrawError,"VectorGraphicsNestedTooDeeply",
2572 image->filename);
2573 if ((draw_info->primitive == (char *) NULL) ||
2574 (*draw_info->primitive == '\0'))
2575 return(MagickFalse);
2576 if (draw_info->debug != MagickFalse)
2577 (void) LogMagickEvent(DrawEvent,GetMagickModule(),"begin draw-image");
2578 if (SetImageStorageClass(image,DirectClass) == MagickFalse)
2579 return(MagickFalse);
2580 if (image->matte == MagickFalse)
2581 {
2582 status=SetImageAlphaChannel(image,OpaqueAlphaChannel);
2583 if (status == MagickFalse)
2584 return(MagickFalse);
2585 }
2586 primitive=(char *) NULL;
2587 if ((*draw_info->primitive == '@') && (strlen(draw_info->primitive) > 1) &&
2588 (*(draw_info->primitive+1) != '-') && (depth == 0))
2589 primitive=FileToString(draw_info->primitive,~0UL,&image->exception);
2590 else
2591 primitive=AcquireString(draw_info->primitive);
2592 if (primitive == (char *) NULL)
2593 return(MagickFalse);
2594 primitive_extent=(double) strlen(primitive);
2595 (void) SetImageArtifact(image,"mvg:vector-graphics",primitive);
2596 n=0;
2597 /*
2598 Allocate primitive info memory.
2599 */
2600 graphic_context=(DrawInfo **) AcquireMagickMemory(sizeof(*graphic_context));
2601 if (graphic_context == (DrawInfo **) NULL)
2602 {
2603 primitive=DestroyString(primitive);
2604 ThrowBinaryImageException(ResourceLimitError,"MemoryAllocationFailed",
2605 image->filename);
2606 }
2607 number_points=(size_t) PrimitiveExtentPad;
2608 primitive_info=(PrimitiveInfo *) AcquireQuantumMemory((size_t)
2609 (number_points+1),sizeof(*primitive_info));
2610 if (primitive_info == (PrimitiveInfo *) NULL)
2611 {
2612 primitive=DestroyString(primitive);
2613 for ( ; n >= 0; n--)
2614 graphic_context[n]=DestroyDrawInfo(graphic_context[n]);
2615 graphic_context=(DrawInfo **) RelinquishMagickMemory(graphic_context);
2616 ThrowBinaryImageException(ResourceLimitError,"MemoryAllocationFailed",
2617 image->filename);
2618 }
2619 (void) memset(primitive_info,0,(size_t) (number_points+1)*
2620 sizeof(*primitive_info));
2621 (void) memset(&mvg_info,0,sizeof(mvg_info));
2622 mvg_info.primitive_info=(&primitive_info);
2623 mvg_info.extent=(&number_points);
2624 mvg_info.exception=(&image->exception);
2625 graphic_context[n]=CloneDrawInfo((ImageInfo *) NULL,draw_info);
2626 graphic_context[n]->viewbox=image->page;
2627 if ((image->page.width == 0) || (image->page.height == 0))
2628 {
2629 graphic_context[n]->viewbox.width=image->columns;
2630 graphic_context[n]->viewbox.height=image->rows;
2631 }
2632 token=AcquireString(primitive);
2633 extent=strlen(token)+MaxTextExtent;
2634 cursor=0.0;
2635 defsDepth=0;
2636 symbolDepth=0;
2637 macros=GetMVGMacros(primitive,&image->exception);
2638 status=QueryColorDatabase("#000000",&start_color,&image->exception);
2639 for (q=primitive; *q != '\0'; )
2640 {
2641 /*
2642 Interpret graphic primitive.
2643 */
2644 if (GetNextToken(q,&q,MaxTextExtent,keyword) < 1)
2645 break;
2646 if (*keyword == '\0')
2647 break;
2648 if (*keyword == '#')
2649 {
2650 /*
2651 Comment.
2652 */
2653 while ((*q != '\n') && (*q != '\0'))
2654 q++;
2655 continue;
2656 }
2657 p=q-strlen(keyword)-1;
2658 primitive_type=UndefinedPrimitive;
2659 current=graphic_context[n]->affine;
2660 GetAffineMatrix(&affine);
2661 *token='\0';
2662 switch (*keyword)
2663 {
2664 case ';':
2665 break;
2666 case 'a':
2667 case 'A':
2668 {
2669 if (LocaleCompare("affine",keyword) == 0)
2670 {
2671 (void) GetNextToken(q,&q,extent,token);
2672 affine.sx=GetDrawValue(token,&next_token);
2673 if (token == next_token)
2674 ThrowPointExpectedException(image,token);
2675 (void) GetNextToken(q,&q,extent,token);
2676 if (IsValidListChar((int) ((unsigned char) *token)) == MagickFalse)
2677 ThrowPointExpectedException(image,token);
2678 if (*token == ',')
2679 (void) GetNextToken(q,&q,extent,token);
2680 affine.ry=GetDrawValue(token,&next_token);
2681 if (token == next_token)
2682 ThrowPointExpectedException(image,token);
2683 (void) GetNextToken(q,&q,extent,token);
2684 if (IsValidListChar((int) ((unsigned char) *token)) == MagickFalse)
2685 ThrowPointExpectedException(image,token);
2686 if (*token == ',')
2687 (void) GetNextToken(q,&q,extent,token);
2688 affine.rx=GetDrawValue(token,&next_token);
2689 if (token == next_token)
2690 ThrowPointExpectedException(image,token);
2691 (void) GetNextToken(q,&q,extent,token);
2692 if (IsValidListChar((int) ((unsigned char) *token)) == MagickFalse)
2693 ThrowPointExpectedException(image,token);
2694 if (*token == ',')
2695 (void) GetNextToken(q,&q,extent,token);
2696 affine.sy=GetDrawValue(token,&next_token);
2697 if (token == next_token)
2698 ThrowPointExpectedException(image,token);
2699 (void) GetNextToken(q,&q,extent,token);
2700 if (IsValidListChar((int) ((unsigned char) *token)) == MagickFalse)
2701 ThrowPointExpectedException(image,token);
2702 if (*token == ',')
2703 (void) GetNextToken(q,&q,extent,token);
2704 affine.tx=GetDrawValue(token,&next_token);
2705 if (token == next_token)
2706 ThrowPointExpectedException(image,token);
2707 (void) GetNextToken(q,&q,extent,token);
2708 if (IsValidListChar((int) ((unsigned char) *token)) == MagickFalse)
2709 ThrowPointExpectedException(image,token);
2710 if (*token == ',')
2711 (void) GetNextToken(q,&q,extent,token);
2712 affine.ty=GetDrawValue(token,&next_token);
2713 if (token == next_token)
2714 ThrowPointExpectedException(image,token);
2715 break;
2716 }
2717 if (LocaleCompare("arc",keyword) == 0)
2718 {
2719 primitive_type=ArcPrimitive;
2720 break;
2721 }
2722 status=MagickFalse;
2723 break;
2724 }
2725 case 'b':
2726 case 'B':
2727 {
2728 if (LocaleCompare("bezier",keyword) == 0)
2729 {
2730 primitive_type=BezierPrimitive;
2731 break;
2732 }
2733 if (LocaleCompare("border-color",keyword) == 0)
2734 {
2735 (void) GetNextToken(q,&q,extent,token);
2736 status&=QueryColorDatabase(token,&graphic_context[n]->border_color,
2737 &image->exception);
2738 break;
2739 }
2740 status=MagickFalse;
2741 break;
2742 }
2743 case 'c':
2744 case 'C':
2745 {
2746 if (LocaleCompare("class",keyword) == 0)
2747 {
2748 const char
2749 *mvg_class;
2750
2751 (void) GetNextToken(q,&q,extent,token);
2752 if ((*token == '\0') || (*token == ';'))
2753 {
2754 status=MagickFalse;
2755 break;
2756 }
2757 /*
2758 Identify recursion.
2759 */
2760 for (i=0; i <= n; i++)
2761 if (LocaleCompare(token,graphic_context[i]->id) == 0)
2762 break;
2763 if (i <= n)
2764 break;
2765 if (classDepth++ > MagickMaxRecursionDepth)
2766 {
2767 (void) ThrowMagickException(&image->exception,GetMagickModule(),
2768 DrawError,"VectorGraphicsNestedTooDeeply","`%s'",token);
2769 status=MagickFalse;
2770 break;
2771 }
2772 mvg_class=(const char *) GetValueFromSplayTree(macros,token);
2773 if ((graphic_context[n]->render != MagickFalse) &&
2774 (mvg_class != (const char *) NULL) && (p > primitive))
2775 {
2776 char
2777 *elements;
2778
2779 ssize_t
2780 offset;
2781
2782 /*
2783 Inject class elements in stream.
2784 */
2785 (void) CloneString(&graphic_context[n]->id,token);
2786 offset=(ssize_t) (p-primitive);
2787 elements=AcquireString(primitive);
2788 elements[offset]='\0';
2789 (void) ConcatenateString(&elements,mvg_class);
2790 (void) ConcatenateString(&elements,"\n");
2791 (void) ConcatenateString(&elements,q);
2792 primitive=DestroyString(primitive);
2793 primitive=elements;
2794 q=primitive+offset;
2795 }
2796 break;
2797 }
2798 if (LocaleCompare("clip-path",keyword) == 0)
2799 {
2800 const char
2801 *clip_path;
2802
2803 /*
2804 Take a node from within the MVG document, and duplicate it here.
2805 */
2806 (void) GetNextToken(q,&q,extent,token);
2807 if (*token == '\0')
2808 {
2809 status=MagickFalse;
2810 break;
2811 }
2812 (void) CloneString(&graphic_context[n]->clip_mask,token);
2813 clip_path=(const char *) GetValueFromSplayTree(macros,token);
2814 if (clip_path != (const char *) NULL)
2815 {
2816 if (graphic_context[n]->clipping_mask != (Image *) NULL)
2817 graphic_context[n]->clipping_mask=
2818 DestroyImage(graphic_context[n]->clipping_mask);
2819 graphic_context[n]->clipping_mask=DrawClippingMask(image,
2820 graphic_context[n],token,clip_path,&image->exception);
2821 if (graphic_context[n]->compliance != SVGCompliance)
2822 {
2823 const char
2824 *clip_path;
2825
2826 clip_path=(const char *) GetValueFromSplayTree(macros,
2827 graphic_context[n]->clip_mask);
2828 if (clip_path != (const char *) NULL)
2829 (void) SetImageArtifact(image,
2830 graphic_context[n]->clip_mask,clip_path);
2831 status&=DrawClipPath(image,graphic_context[n],
2832 graphic_context[n]->clip_mask);
2833 }
2834 }
2835 break;
2836 }
2837 if (LocaleCompare("clip-rule",keyword) == 0)
2838 {
2839 ssize_t
2840 fill_rule;
2841
2842 (void) GetNextToken(q,&q,extent,token);
2843 fill_rule=ParseCommandOption(MagickFillRuleOptions,MagickFalse,
2844 token);
2845 if (fill_rule == -1)
2846 {
2847 status=MagickFalse;
2848 break;
2849 }
2850 graphic_context[n]->fill_rule=(FillRule) fill_rule;
2851 break;
2852 }
2853 if (LocaleCompare("clip-units",keyword) == 0)
2854 {
2855 ssize_t
2856 clip_units;
2857
2858 (void) GetNextToken(q,&q,extent,token);
2859 clip_units=ParseCommandOption(MagickClipPathOptions,MagickFalse,
2860 token);
2861 if (clip_units == -1)
2862 {
2863 status=MagickFalse;
2864 break;
2865 }
2866 graphic_context[n]->clip_units=(ClipPathUnits) clip_units;
2867 if (clip_units == ObjectBoundingBox)
2868 {
2869 GetAffineMatrix(&current);
2870 affine.sx=draw_info->bounds.x2;
2871 affine.sy=draw_info->bounds.y2;
2872 affine.tx=draw_info->bounds.x1;
2873 affine.ty=draw_info->bounds.y1;
2874 break;
2875 }
2876 break;
2877 }
2878 if (LocaleCompare("circle",keyword) == 0)
2879 {
2880 primitive_type=CirclePrimitive;
2881 break;
2882 }
2883 if (LocaleCompare("color",keyword) == 0)
2884 {
2885 primitive_type=ColorPrimitive;
2886 break;
2887 }
2888 if (LocaleCompare("compliance",keyword) == 0)
2889 {
2890 /*
2891 MVG compliance associates a clipping mask with an image; SVG
2892 compliance associates a clipping mask with a graphics context.
2893 */
2894 (void) GetNextToken(q,&q,extent,token);
2895 graphic_context[n]->compliance=(ComplianceType) ParseCommandOption(
2896 MagickComplianceOptions,MagickFalse,token);
2897 break;
2898 }
2899 if (LocaleCompare("currentColor",keyword) == 0)
2900 {
2901 (void) GetNextToken(q,&q,extent,token);
2902 break;
2903 }
2904 status=MagickFalse;
2905 break;
2906 }
2907 case 'd':
2908 case 'D':
2909 {
2910 if (LocaleCompare("decorate",keyword) == 0)
2911 {
2912 ssize_t
2913 decorate;
2914
2915 (void) GetNextToken(q,&q,extent,token);
2916 decorate=ParseCommandOption(MagickDecorateOptions,MagickFalse,
2917 token);
2918 if (decorate == -1)
2919 {
2920 status=MagickFalse;
2921 break;
2922 }
2923 graphic_context[n]->decorate=(DecorationType) decorate;
2924 break;
2925 }
2926 if (LocaleCompare("density",keyword) == 0)
2927 {
2928 (void) GetNextToken(q,&q,extent,token);
2929 (void) CloneString(&graphic_context[n]->density,token);
2930 break;
2931 }
2932 if (LocaleCompare("direction",keyword) == 0)
2933 {
2934 ssize_t
2935 direction;
2936
2937 (void) GetNextToken(q,&q,extent,token);
2938 direction=ParseCommandOption(MagickDirectionOptions,MagickFalse,
2939 token);
2940 if (direction == -1)
2941 status=MagickFalse;
2942 else
2943 graphic_context[n]->direction=(DirectionType) direction;
2944 break;
2945 }
2946 status=MagickFalse;
2947 break;
2948 }
2949 case 'e':
2950 case 'E':
2951 {
2952 if (LocaleCompare("ellipse",keyword) == 0)
2953 {
2954 primitive_type=EllipsePrimitive;
2955 break;
2956 }
2957 if (LocaleCompare("encoding",keyword) == 0)
2958 {
2959 (void) GetNextToken(q,&q,extent,token);
2960 (void) CloneString(&graphic_context[n]->encoding,token);
2961 break;
2962 }
2963 status=MagickFalse;
2964 break;
2965 }
2966 case 'f':
2967 case 'F':
2968 {
2969 if (LocaleCompare("fill",keyword) == 0)
2970 {
2971 const char
2972 *mvg_class;
2973
2974 (void) GetNextToken(q,&q,extent,token);
2975 if (graphic_context[n]->clip_path != MagickFalse)
2976 break;
2977 mvg_class=(const char *) GetValueFromSplayTree(macros,token);
2978 if (mvg_class != (const char *) NULL)
2979 {
2980 (void) DrawPatternPath(image,draw_info,mvg_class,
2981 &graphic_context[n]->fill_pattern);
2982 break;
2983 }
2984 (void) FormatLocaleString(pattern,MaxTextExtent,"%s",token);
2985 if (GetImageArtifact(image,pattern) != (const char *) NULL)
2986 {
2987 (void) DrawPatternPath(image,draw_info,token,
2988 &graphic_context[n]->fill_pattern);
2989 break;
2990 }
2991 status&=QueryColorDatabase(token,&graphic_context[n]->fill,
2992 &image->exception);
2993 if (graphic_context[n]->fill_opacity != (double) OpaqueOpacity)
2994 graphic_context[n]->fill.opacity=ClampToQuantum(
2995 graphic_context[n]->fill_opacity);
2996 break;
2997 }
2998 if (LocaleCompare("fill-opacity",keyword) == 0)
2999 {
3000 double
3001 opacity;
3002
3003 (void) GetNextToken(q,&q,extent,token);
3004 if (graphic_context[n]->clip_path != MagickFalse)
3005 break;
3006 factor=strchr(token,'%') != (char *) NULL ? 0.01 : 1.0;
3007 opacity=MagickMin(MagickMax(factor*
3008 GetDrawValue(token,&next_token),0.0),1.0);
3009 if (token == next_token)
3010 ThrowPointExpectedException(image,token);
3011 if (graphic_context[n]->compliance == SVGCompliance)
3012 graphic_context[n]->fill_opacity*=(1.0-opacity);
3013 else
3014 graphic_context[n]->fill_opacity=((MagickRealType) QuantumRange-
3015 graphic_context[n]->fill_opacity)*(1.0-opacity);
3016 if (graphic_context[n]->fill.opacity != TransparentOpacity)
3017 graphic_context[n]->fill.opacity=(Quantum)
3018 graphic_context[n]->fill_opacity;
3019 else
3020 graphic_context[n]->fill.opacity=ClampToQuantum((MagickRealType)
3021 QuantumRange*(1.0-opacity));
3022 break;
3023 }
3024 if (LocaleCompare("fill-rule",keyword) == 0)
3025 {
3026 ssize_t
3027 fill_rule;
3028
3029 (void) GetNextToken(q,&q,extent,token);
3030 fill_rule=ParseCommandOption(MagickFillRuleOptions,MagickFalse,
3031 token);
3032 if (fill_rule == -1)
3033 {
3034 status=MagickFalse;
3035 break;
3036 }
3037 graphic_context[n]->fill_rule=(FillRule) fill_rule;
3038 break;
3039 }
3040 if (LocaleCompare("font",keyword) == 0)
3041 {
3042 (void) GetNextToken(q,&q,extent,token);
3043 (void) CloneString(&graphic_context[n]->font,token);
3044 if (LocaleCompare("none",token) == 0)
3045 graphic_context[n]->font=(char *) RelinquishMagickMemory(
3046 graphic_context[n]->font);
3047 break;
3048 }
3049 if (LocaleCompare("font-family",keyword) == 0)
3050 {
3051 (void) GetNextToken(q,&q,extent,token);
3052 (void) CloneString(&graphic_context[n]->family,token);
3053 break;
3054 }
3055 if (LocaleCompare("font-size",keyword) == 0)
3056 {
3057 (void) GetNextToken(q,&q,extent,token);
3058 graphic_context[n]->pointsize=GetDrawValue(token,&next_token);
3059 if (token == next_token)
3060 ThrowPointExpectedException(image,token);
3061 break;
3062 }
3063 if (LocaleCompare("font-stretch",keyword) == 0)
3064 {
3065 ssize_t
3066 stretch;
3067
3068 (void) GetNextToken(q,&q,extent,token);
3069 stretch=ParseCommandOption(MagickStretchOptions,MagickFalse,token);
3070 if (stretch == -1)
3071 {
3072 status=MagickFalse;
3073 break;
3074 }
3075 graphic_context[n]->stretch=(StretchType) stretch;
3076 break;
3077 }
3078 if (LocaleCompare("font-style",keyword) == 0)
3079 {
3080 ssize_t
3081 style;
3082
3083 (void) GetNextToken(q,&q,extent,token);
3084 style=ParseCommandOption(MagickStyleOptions,MagickFalse,token);
3085 if (style == -1)
3086 {
3087 status=MagickFalse;
3088 break;
3089 }
3090 graphic_context[n]->style=(StyleType) style;
3091 break;
3092 }
3093 if (LocaleCompare("font-weight",keyword) == 0)
3094 {
3095 ssize_t
3096 weight;
3097
3098 (void) GetNextToken(q,&q,extent,token);
3099 weight=ParseCommandOption(MagickWeightOptions,MagickFalse,token);
3100 if (weight == -1)
3101 weight=(ssize_t) StringToUnsignedLong(token);
3102 graphic_context[n]->weight=(size_t) weight;
3103 break;
3104 }
3105 status=MagickFalse;
3106 break;
3107 }
3108 case 'g':
3109 case 'G':
3110 {
3111 if (LocaleCompare("gradient-units",keyword) == 0)
3112 {
3113 (void) GetNextToken(q,&q,extent,token);
3114 break;
3115 }
3116 if (LocaleCompare("gravity",keyword) == 0)
3117 {
3118 ssize_t
3119 gravity;
3120
3121 (void) GetNextToken(q,&q,extent,token);
3122 gravity=ParseCommandOption(MagickGravityOptions,MagickFalse,token);
3123 if (gravity == -1)
3124 {
3125 status=MagickFalse;
3126 break;
3127 }
3128 graphic_context[n]->gravity=(GravityType) gravity;
3129 break;
3130 }
3131 status=MagickFalse;
3132 break;
3133 }
3134 case 'i':
3135 case 'I':
3136 {
3137 if (LocaleCompare("image",keyword) == 0)
3138 {
3139 ssize_t
3140 compose;
3141
3142 primitive_type=ImagePrimitive;
3143 (void) GetNextToken(q,&q,extent,token);
3144 compose=ParseCommandOption(MagickComposeOptions,MagickFalse,token);
3145 if (compose == -1)
3146 {
3147 status=MagickFalse;
3148 break;
3149 }
3150 graphic_context[n]->compose=(CompositeOperator) compose;
3151 break;
3152 }
3153 if (LocaleCompare("interline-spacing",keyword) == 0)
3154 {
3155 (void) GetNextToken(q,&q,extent,token);
3156 graphic_context[n]->interline_spacing=GetDrawValue(token,
3157 &next_token);
3158 if (token == next_token)
3159 ThrowPointExpectedException(image,token);
3160 break;
3161 }
3162 if (LocaleCompare("interword-spacing",keyword) == 0)
3163 {
3164 (void) GetNextToken(q,&q,extent,token);
3165 graphic_context[n]->interword_spacing=GetDrawValue(token,
3166 &next_token);
3167 if (token == next_token)
3168 ThrowPointExpectedException(image,token);
3169 break;
3170 }
3171 status=MagickFalse;
3172 break;
3173 }
3174 case 'k':
3175 case 'K':
3176 {
3177 if (LocaleCompare("kerning",keyword) == 0)
3178 {
3179 (void) GetNextToken(q,&q,extent,token);
3180 graphic_context[n]->kerning=GetDrawValue(token,&next_token);
3181 if (token == next_token)
3182 ThrowPointExpectedException(image,token);
3183 break;
3184 }
3185 status=MagickFalse;
3186 break;
3187 }
3188 case 'l':
3189 case 'L':
3190 {
3191 if (LocaleCompare("letter-spacing",keyword) == 0)
3192 {
3193 (void) GetNextToken(q,&q,extent,token);
3194 if (IsValidPoint(token) == MagickFalse)
3195 break;
3196 clone_info=CloneDrawInfo((ImageInfo *) NULL,graphic_context[n]);
3197 clone_info->text=AcquireString(" ");
3198 status&=GetTypeMetrics(image,clone_info,&metrics);
3199 graphic_context[n]->kerning=metrics.width*
3200 GetDrawValue(token,&next_token);
3201 clone_info=DestroyDrawInfo(clone_info);
3202 if (token == next_token)
3203 ThrowPointExpectedException(image,token);
3204 break;
3205 }
3206 if (LocaleCompare("line",keyword) == 0)
3207 {
3208 primitive_type=LinePrimitive;
3209 break;
3210 }
3211 status=MagickFalse;
3212 break;
3213 }
3214 case 'm':
3215 case 'M':
3216 {
3217 if (LocaleCompare("mask",keyword) == 0)
3218 {
3219 const char
3220 *mask_path;
3221
3222 /*
3223 Take a node from within the MVG document, and duplicate it here.
3224 */
3225 (void) GetNextToken(q,&q,extent,token);
3226 mask_path=(const char *) GetValueFromSplayTree(macros,token);
3227 if (mask_path != (const char *) NULL)
3228 {
3229 if (graphic_context[n]->composite_mask != (Image *) NULL)
3230 graphic_context[n]->composite_mask=
3231 DestroyImage(graphic_context[n]->composite_mask);
3232 graphic_context[n]->composite_mask=DrawCompositeMask(image,
3233 graphic_context[n],token,mask_path,&image->exception);
3234 if (graphic_context[n]->compliance != SVGCompliance)
3235 status=SetImageMask(image,graphic_context[n]->composite_mask);
3236 }
3237 break;
3238 }
3239 if (LocaleCompare("matte",keyword) == 0)
3240 {
3241 primitive_type=MattePrimitive;
3242 break;
3243 }
3244 status=MagickFalse;
3245 break;
3246 }
3247 case 'o':
3248 case 'O':
3249 {
3250 if (LocaleCompare("offset",keyword) == 0)
3251 {
3252 (void) GetNextToken(q,&q,extent,token);
3253 break;
3254 }
3255 if (LocaleCompare("opacity",keyword) == 0)
3256 {
3257 double
3258 opacity;
3259
3260 (void) GetNextToken(q,&q,extent,token);
3261 if (graphic_context[n]->clip_path != MagickFalse)
3262 break;
3263 factor=strchr(token,'%') != (char *) NULL ? 0.01 : 1.0;
3264 opacity=1.0-MagickMin(MagickMax(factor*
3265 GetDrawValue(token,&next_token),0.0),1.0);
3266 if (token == next_token)
3267 ThrowPointExpectedException(image,token);
3268 if (graphic_context[n]->compliance == SVGCompliance)
3269 {
3270 graphic_context[n]->fill_opacity*=opacity;
3271 graphic_context[n]->stroke_opacity*=opacity;
3272 }
3273 else
3274 {
3275 graphic_context[n]->fill_opacity=(double) QuantumRange*opacity;
3276 graphic_context[n]->stroke_opacity=(double) QuantumRange*
3277 opacity;
3278 }
3279 if (graphic_context[n]->fill.opacity != (double) TransparentOpacity)
3280 {
3281 graphic_context[n]->fill.opacity=
3282 graphic_context[n]->fill_opacity;
3283 graphic_context[n]->stroke.opacity=
3284 graphic_context[n]->stroke_opacity;
3285 }
3286 else
3287 {
3288 graphic_context[n]->fill.opacity=(MagickRealType)
3289 ClampToQuantum((double) QuantumRange*opacity);
3290 graphic_context[n]->stroke.opacity=(MagickRealType)
3291 ClampToQuantum((double) QuantumRange*opacity);
3292 }
3293 break;
3294 }
3295 status=MagickFalse;
3296 break;
3297 }
3298 case 'p':
3299 case 'P':
3300 {
3301 if (LocaleCompare("path",keyword) == 0)
3302 {
3303 primitive_type=PathPrimitive;
3304 break;
3305 }
3306 if (LocaleCompare("point",keyword) == 0)
3307 {
3308 primitive_type=PointPrimitive;
3309 break;
3310 }
3311 if (LocaleCompare("polyline",keyword) == 0)
3312 {
3313 primitive_type=PolylinePrimitive;
3314 break;
3315 }
3316 if (LocaleCompare("polygon",keyword) == 0)
3317 {
3318 primitive_type=PolygonPrimitive;
3319 break;
3320 }
3321 if (LocaleCompare("pop",keyword) == 0)
3322 {
3323 if (GetNextToken(q,&q,extent,token) < 1)
3324 break;
3325 if (LocaleCompare("class",token) == 0)
3326 break;
3327 if (LocaleCompare("clip-path",token) == 0)
3328 break;
3329 if (LocaleCompare("defs",token) == 0)
3330 {
3331 defsDepth--;
3332 graphic_context[n]->render=defsDepth > 0 ? MagickFalse :
3333 MagickTrue;
3334 break;
3335 }
3336 if (LocaleCompare("gradient",token) == 0)
3337 break;
3338 if (LocaleCompare("graphic-context",token) == 0)
3339 {
3340 if (n <= 0)
3341 {
3342 (void) ThrowMagickException(&image->exception,
3343 GetMagickModule(),DrawError,
3344 "UnbalancedGraphicContextPushPop","`%s'",token);
3345 status=MagickFalse;
3346 n=0;
3347 break;
3348 }
3349 if ((graphic_context[n]->clip_mask != (char *) NULL) &&
3350 (graphic_context[n]->compliance != SVGCompliance))
3351 if (LocaleCompare(graphic_context[n]->clip_mask,
3352 graphic_context[n-1]->clip_mask) != 0)
3353 status=SetImageClipMask(image,(Image *) NULL);
3354 graphic_context[n]=DestroyDrawInfo(graphic_context[n]);
3355 n--;
3356 break;
3357 }
3358 if (LocaleCompare("mask",token) == 0)
3359 break;
3360 if (LocaleCompare("pattern",token) == 0)
3361 break;
3362 if (LocaleCompare("symbol",token) == 0)
3363 {
3364 symbolDepth--;
3365 graphic_context[n]->render=symbolDepth > 0 ? MagickFalse :
3366 MagickTrue;
3367 break;
3368 }
3369 status=MagickFalse;
3370 break;
3371 }
3372 if (LocaleCompare("push",keyword) == 0)
3373 {
3374 if (GetNextToken(q,&q,extent,token) < 1)
3375 break;
3376 if (LocaleCompare("class",token) == 0)
3377 {
3378 /*
3379 Class context.
3380 */
3381 for (p=q; *q != '\0'; )
3382 {
3383 if (GetNextToken(q,&q,extent,token) < 1)
3384 break;
3385 if (LocaleCompare(token,"pop") != 0)
3386 continue;
3387 (void) GetNextToken(q,(const char **) NULL,extent,token);
3388 if (LocaleCompare(token,"class") != 0)
3389 continue;
3390 break;
3391 }
3392 (void) GetNextToken(q,&q,extent,token);
3393 break;
3394 }
3395 if (LocaleCompare("clip-path",token) == 0)
3396 {
3397 (void) GetNextToken(q,&q,extent,token);
3398 for (p=q; *q != '\0'; )
3399 {
3400 if (GetNextToken(q,&q,extent,token) < 1)
3401 break;
3402 if (LocaleCompare(token,"pop") != 0)
3403 continue;
3404 (void) GetNextToken(q,(const char **) NULL,extent,token);
3405 if (LocaleCompare(token,"clip-path") != 0)
3406 continue;
3407 break;
3408 }
3409 if ((q == (char *) NULL) || (p == (char *) NULL) || ((q-4) < p))
3410 {
3411 status=MagickFalse;
3412 break;
3413 }
3414 (void) GetNextToken(q,&q,extent,token);
3415 break;
3416 }
3417 if (LocaleCompare("defs",token) == 0)
3418 {
3419 defsDepth++;
3420 graphic_context[n]->render=defsDepth > 0 ? MagickFalse :
3421 MagickTrue;
3422 break;
3423 }
3424 if (LocaleCompare("gradient",token) == 0)
3425 {
3426 char
3427 key[2*MaxTextExtent],
3428 name[MaxTextExtent],
3429 type[MaxTextExtent];
3430
3431 SegmentInfo
3432 segment;
3433
3434 (void) GetNextToken(q,&q,extent,token);
3435 (void) CopyMagickString(name,token,MaxTextExtent);
3436 (void) GetNextToken(q,&q,extent,token);
3437 (void) CopyMagickString(type,token,MaxTextExtent);
3438 (void) GetNextToken(q,&q,extent,token);
3439 segment.x1=GetDrawValue(token,&next_token);
3440 if (token == next_token)
3441 ThrowPointExpectedException(image,token);
3442 (void) GetNextToken(q,&q,extent,token);
3443 if (IsValidListChar((int) ((unsigned char) *token)) == MagickFalse)
3444 ThrowPointExpectedException(image,token);
3445 if (*token == ',')
3446 (void) GetNextToken(q,&q,extent,token);
3447 segment.y1=GetDrawValue(token,&next_token);
3448 if (token == next_token)
3449 ThrowPointExpectedException(image,token);
3450 (void) GetNextToken(q,&q,extent,token);
3451 if (IsValidListChar((int) ((unsigned char) *token)) == MagickFalse)
3452 ThrowPointExpectedException(image,token);
3453 if (*token == ',')
3454 (void) GetNextToken(q,&q,extent,token);
3455 segment.x2=GetDrawValue(token,&next_token);
3456 if (token == next_token)
3457 ThrowPointExpectedException(image,token);
3458 (void) GetNextToken(q,&q,extent,token);
3459 if (IsValidListChar((int) ((unsigned char) *token)) == MagickFalse)
3460 ThrowPointExpectedException(image,token);
3461 if (*token == ',')
3462 (void) GetNextToken(q,&q,extent,token);
3463 segment.y2=GetDrawValue(token,&next_token);
3464 if (token == next_token)
3465 ThrowPointExpectedException(image,token);
3466 if (LocaleCompare(type,"radial") == 0)
3467 {
3468 (void) GetNextToken(q,&q,extent,token);
3469 if (IsValidListChar((int) ((unsigned char) *token)) == MagickFalse)
3470 ThrowPointExpectedException(image,token);
3471 if (*token == ',')
3472 (void) GetNextToken(q,&q,extent,token);
3473 }
3474 for (p=q; *q != '\0'; )
3475 {
3476 if (GetNextToken(q,&q,extent,token) < 1)
3477 break;
3478 if (LocaleCompare(token,"pop") != 0)
3479 continue;
3480 (void) GetNextToken(q,(const char **) NULL,extent,token);
3481 if (LocaleCompare(token,"gradient") != 0)
3482 continue;
3483 break;
3484 }
3485 if ((q == (char *) NULL) || (*q == '\0') ||
3486 (p == (char *) NULL) || ((q-4) < p) ||
3487 ((q-p+4+1) > extent))
3488 {
3489 status=MagickFalse;
3490 break;
3491 }
3492 (void) CopyMagickString(token,p,(size_t) (q-p-4+1));
3493 bounds.x1=graphic_context[n]->affine.sx*segment.x1+
3494 graphic_context[n]->affine.ry*segment.y1+
3495 graphic_context[n]->affine.tx;
3496 bounds.y1=graphic_context[n]->affine.rx*segment.x1+
3497 graphic_context[n]->affine.sy*segment.y1+
3498 graphic_context[n]->affine.ty;
3499 bounds.x2=graphic_context[n]->affine.sx*segment.x2+
3500 graphic_context[n]->affine.ry*segment.y2+
3501 graphic_context[n]->affine.tx;
3502 bounds.y2=graphic_context[n]->affine.rx*segment.x2+
3503 graphic_context[n]->affine.sy*segment.y2+
3504 graphic_context[n]->affine.ty;
3505 (void) FormatLocaleString(key,MaxTextExtent,"%s",name);
3506 (void) SetImageArtifact(image,key,token);
3507 (void) FormatLocaleString(key,MaxTextExtent,"%s-type",name);
3508 (void) SetImageArtifact(image,key,type);
3509 (void) FormatLocaleString(key,MaxTextExtent,"%s-geometry",name);
3510 (void) FormatLocaleString(geometry,MaxTextExtent,
3511 "%gx%g%+.15g%+.15g",
3512 MagickMax(fabs(bounds.x2-bounds.x1+1.0),1.0),
3513 MagickMax(fabs(bounds.y2-bounds.y1+1.0),1.0),
3514 bounds.x1,bounds.y1);
3515 (void) SetImageArtifact(image,key,geometry);
3516 (void) GetNextToken(q,&q,extent,token);
3517 break;
3518 }
3519 if (LocaleCompare("graphic-context",token) == 0)
3520 {
3521 n++;
3522 graphic_context=(DrawInfo **) ResizeQuantumMemory(
3523 graphic_context,(size_t) (n+1),sizeof(*graphic_context));
3524 if (graphic_context == (DrawInfo **) NULL)
3525 {
3526 (void) ThrowMagickException(&image->exception,
3527 GetMagickModule(),ResourceLimitError,
3528 "MemoryAllocationFailed","`%s'",image->filename);
3529 status=MagickFalse;
3530 break;
3531 }
3532 graphic_context[n]=CloneDrawInfo((ImageInfo *) NULL,
3533 graphic_context[n-1]);
3534 if (*q == '"')
3535 {
3536 (void) GetNextToken(q,&q,extent,token);
3537 (void) CloneString(&graphic_context[n]->id,token);
3538 }
3539 if (n > MagickMaxRecursionDepth)
3540 {
3541 (void) ThrowMagickException(&image->exception,
3542 GetMagickModule(),DrawError,
3543 "VectorGraphicsNestedTooDeeply","`%s'",image->filename);
3544 status=MagickFalse;
3545 }
3546 break;
3547 }
3548 if (LocaleCompare("mask",token) == 0)
3549 {
3550 (void) GetNextToken(q,&q,extent,token);
3551 break;
3552 }
3553 if (LocaleCompare("pattern",token) == 0)
3554 {
3555 RectangleInfo
3556 bounds;
3557
3558 (void) GetNextToken(q,&q,extent,token);
3559 (void) CopyMagickString(name,token,MaxTextExtent);
3560 (void) GetNextToken(q,&q,extent,token);
3561 bounds.x=CastDoubleToLong(ceil(GetDrawValue(token,
3562 &next_token)-0.5));
3563 if (token == next_token)
3564 ThrowPointExpectedException(image,token);
3565 (void) GetNextToken(q,&q,extent,token);
3566 if (IsValidListChar((int) ((unsigned char) *token)) == MagickFalse)
3567 ThrowPointExpectedException(image,token);
3568 if (*token == ',')
3569 (void) GetNextToken(q,&q,extent,token);
3570 bounds.y=CastDoubleToLong(ceil(GetDrawValue(token,
3571 &next_token)-0.5));
3572 if (token == next_token)
3573 ThrowPointExpectedException(image,token);
3574 (void) GetNextToken(q,&q,extent,token);
3575 if (IsValidListChar((int) ((unsigned char) *token)) == MagickFalse)
3576 ThrowPointExpectedException(image,token);
3577 if (*token == ',')
3578 (void) GetNextToken(q,&q,extent,token);
3579 bounds.width=CastDoubleToUnsigned(GetDrawValue(token,
3580 &next_token)+0.5);
3581 if (token == next_token)
3582 ThrowPointExpectedException(image,token);
3583 (void) GetNextToken(q,&q,extent,token);
3584 if (IsValidListChar((int) ((unsigned char) *token)) == MagickFalse)
3585 ThrowPointExpectedException(image,token);
3586 if (*token == ',')
3587 (void) GetNextToken(q,&q,extent,token);
3588 bounds.height=CastDoubleToUnsigned(GetDrawValue(token,
3589 &next_token)+0.5);
3590 if (token == next_token)
3591 ThrowPointExpectedException(image,token);
3592 for (p=q; *q != '\0'; )
3593 {
3594 if (GetNextToken(q,&q,extent,token) < 1)
3595 break;
3596 if (LocaleCompare(token,"pop") != 0)
3597 continue;
3598 (void) GetNextToken(q,(const char **) NULL,extent,token);
3599 if (LocaleCompare(token,"pattern") != 0)
3600 continue;
3601 break;
3602 }
3603 if ((q == (char *) NULL) || (p == (char *) NULL) ||
3604 ((q-4) < p) || ((size_t) (q-p+4+1) > extent))
3605 {
3606 status=MagickFalse;
3607 break;
3608 }
3609 (void) CopyMagickString(token,p,(size_t) (q-p-4+1));
3610 (void) FormatLocaleString(key,MaxTextExtent,"%s",name);
3611 (void) SetImageArtifact(image,key,token);
3612 (void) FormatLocaleString(key,MaxTextExtent,"%s-geometry",name);
3613 (void) FormatLocaleString(geometry,MaxTextExtent,
3614 "%.20gx%.20g%+.20g%+.20g",(double) bounds.width,(double)
3615 bounds.height,(double) bounds.x,(double) bounds.y);
3616 (void) SetImageArtifact(image,key,geometry);
3617 (void) GetNextToken(q,&q,extent,token);
3618 break;
3619 }
3620 if (LocaleCompare("symbol",token) == 0)
3621 {
3622 symbolDepth++;
3623 graphic_context[n]->render=symbolDepth > 0 ? MagickFalse :
3624 MagickTrue;
3625 break;
3626 }
3627 status=MagickFalse;
3628 break;
3629 }
3630 status=MagickFalse;
3631 break;
3632 }
3633 case 'r':
3634 case 'R':
3635 {
3636 if (LocaleCompare("rectangle",keyword) == 0)
3637 {
3638 primitive_type=RectanglePrimitive;
3639 break;
3640 }
3641 if (LocaleCompare("rotate",keyword) == 0)
3642 {
3643 (void) GetNextToken(q,&q,extent,token);
3644 angle=GetDrawValue(token,&next_token);
3645 if (token == next_token)
3646 ThrowPointExpectedException(image,token);
3647 affine.sx=cos(DegreesToRadians(fmod((double) angle,360.0)));
3648 affine.rx=sin(DegreesToRadians(fmod((double) angle,360.0)));
3649 affine.ry=(-sin(DegreesToRadians(fmod((double) angle,360.0))));
3650 affine.sy=cos(DegreesToRadians(fmod((double) angle,360.0)));
3651 break;
3652 }
3653 if (LocaleCompare("roundRectangle",keyword) == 0)
3654 {
3655 primitive_type=RoundRectanglePrimitive;
3656 break;
3657 }
3658 status=MagickFalse;
3659 break;
3660 }
3661 case 's':
3662 case 'S':
3663 {
3664 if (LocaleCompare("scale",keyword) == 0)
3665 {
3666 (void) GetNextToken(q,&q,extent,token);
3667 affine.sx=GetDrawValue(token,&next_token);
3668 if (token == next_token)
3669 ThrowPointExpectedException(image,token);
3670 (void) GetNextToken(q,&q,extent,token);
3671 if (IsValidListChar((int) ((unsigned char) *token)) == MagickFalse)
3672 ThrowPointExpectedException(image,token);
3673 if (*token == ',')
3674 (void) GetNextToken(q,&q,extent,token);
3675 affine.sy=GetDrawValue(token,&next_token);
3676 if (token == next_token)
3677 ThrowPointExpectedException(image,token);
3678 break;
3679 }
3680 if (LocaleCompare("skewX",keyword) == 0)
3681 {
3682 (void) GetNextToken(q,&q,extent,token);
3683 angle=GetDrawValue(token,&next_token);
3684 if (token == next_token)
3685 ThrowPointExpectedException(image,token);
3686 affine.ry=sin(DegreesToRadians(angle));
3687 break;
3688 }
3689 if (LocaleCompare("skewY",keyword) == 0)
3690 {
3691 (void) GetNextToken(q,&q,extent,token);
3692 angle=GetDrawValue(token,&next_token);
3693 if (token == next_token)
3694 ThrowPointExpectedException(image,token);
3695 affine.rx=(-tan(DegreesToRadians(angle)/2.0));
3696 break;
3697 }
3698 if (LocaleCompare("stop-color",keyword) == 0)
3699 {
3700 GradientType
3701 type;
3702
3703 PixelPacket
3704 stop_color;
3705
3706 (void) GetNextToken(q,&q,extent,token);
3707 status&=QueryColorDatabase(token,&stop_color,&image->exception);
3708 type=LinearGradient;
3709 if (draw_info->gradient.type == RadialGradient)
3710 type=RadialGradient;
3711 (void) GradientImage(image,type,PadSpread,&start_color,&stop_color);
3712 start_color=stop_color;
3713 (void) GetNextToken(q,&q,extent,token);
3714 break;
3715 }
3716 if (LocaleCompare("stroke",keyword) == 0)
3717 {
3718 const char
3719 *mvg_class;
3720
3721 (void) GetNextToken(q,&q,extent,token);
3722 if (graphic_context[n]->clip_path != MagickFalse)
3723 break;
3724 mvg_class=(const char *) GetValueFromSplayTree(macros,token);
3725 if (mvg_class != (const char *) NULL)
3726 {
3727 (void) DrawPatternPath(image,draw_info,mvg_class,
3728 &graphic_context[n]->stroke_pattern);
3729 break;
3730 }
3731 (void) FormatLocaleString(pattern,MaxTextExtent,"%s",token);
3732 if (GetImageArtifact(image,pattern) != (const char *) NULL)
3733 {
3734 (void) DrawPatternPath(image,draw_info,token,
3735 &graphic_context[n]->stroke_pattern);
3736 break;
3737 }
3738 status&=QueryColorDatabase(token,&graphic_context[n]->stroke,
3739 &image->exception);
3740 if (graphic_context[n]->stroke_opacity != (MagickRealType) OpaqueOpacity)
3741 graphic_context[n]->stroke.opacity=ClampToQuantum(
3742 graphic_context[n]->stroke_opacity);
3743 break;
3744 }
3745 if (LocaleCompare("stroke-antialias",keyword) == 0)
3746 {
3747 (void) GetNextToken(q,&q,extent,token);
3748 graphic_context[n]->stroke_antialias=StringToLong(token) != 0 ?
3749 MagickTrue : MagickFalse;
3750 break;
3751 }
3752 if (LocaleCompare("stroke-dasharray",keyword) == 0)
3753 {
3754 if (graphic_context[n]->dash_pattern != (double *) NULL)
3755 graphic_context[n]->dash_pattern=(double *)
3756 RelinquishMagickMemory(graphic_context[n]->dash_pattern);
3757 if (IsValidPoint(q) != MagickFalse)
3758 {
3759 const char
3760 *p;
3761
3762 p=q;
3763 (void) GetNextToken(p,&p,extent,token);
3764 if (IsValidListChar((int) ((unsigned char) *token)) == MagickFalse)
3765 ThrowPointExpectedException(image,token);
3766 if (*token == ',')
3767 (void) GetNextToken(p,&p,extent,token);
3768 for (x=0; IsValidPoint(token) != MagickFalse; x++)
3769 {
3770 (void) GetNextToken(p,&p,extent,token);
3771 if (*token == ',')
3772 (void) GetNextToken(p,&p,extent,token);
3773 }
3774 graphic_context[n]->dash_pattern=(double *)
3775 AcquireQuantumMemory((size_t) (2*x+2),
3776 sizeof(*graphic_context[n]->dash_pattern));
3777 if (graphic_context[n]->dash_pattern == (double *) NULL)
3778 {
3779 (void) ThrowMagickException(&image->exception,
3780 GetMagickModule(),ResourceLimitError,
3781 "MemoryAllocationFailed","`%s'",image->filename);
3782 status=MagickFalse;
3783 break;
3784 }
3785 (void) memset(graphic_context[n]->dash_pattern,0,(size_t)
3786 (2*x+2)*sizeof(*graphic_context[n]->dash_pattern));
3787 for (j=0; j < x; j++)
3788 {
3789 (void) GetNextToken(q,&q,extent,token);
3790 if (IsValidListChar((int) ((unsigned char) *token)) == MagickFalse)
3791 ThrowPointExpectedException(image,token);
3792 if (*token == ',')
3793 (void) GetNextToken(q,&q,extent,token);
3794 graphic_context[n]->dash_pattern[j]=GetDrawValue(token,
3795 &next_token);
3796 if (token == next_token)
3797 ThrowPointExpectedException(image,token);
3798 if (graphic_context[n]->dash_pattern[j] <= 0.0)
3799 status=MagickFalse;
3800 }
3801 if ((x & 0x01) != 0)
3802 for ( ; j < (2*x); j++)
3803 graphic_context[n]->dash_pattern[j]=
3804 graphic_context[n]->dash_pattern[j-x];
3805 graphic_context[n]->dash_pattern[j]=0.0;
3806 break;
3807 }
3808 (void) GetNextToken(q,&q,extent,token);
3809 break;
3810 }
3811 if (LocaleCompare("stroke-dashoffset",keyword) == 0)
3812 {
3813 (void) GetNextToken(q,&q,extent,token);
3814 graphic_context[n]->dash_offset=GetDrawValue(token,&next_token);
3815 if (token == next_token)
3816 ThrowPointExpectedException(image,token);
3817 break;
3818 }
3819 if (LocaleCompare("stroke-linecap",keyword) == 0)
3820 {
3821 ssize_t
3822 linecap;
3823
3824 (void) GetNextToken(q,&q,extent,token);
3825 linecap=ParseCommandOption(MagickLineCapOptions,MagickFalse,token);
3826 if (linecap == -1)
3827 {
3828 status=MagickFalse;
3829 break;
3830 }
3831 graphic_context[n]->linecap=(LineCap) linecap;
3832 break;
3833 }
3834 if (LocaleCompare("stroke-linejoin",keyword) == 0)
3835 {
3836 ssize_t
3837 linejoin;
3838
3839 (void) GetNextToken(q,&q,extent,token);
3840 linejoin=ParseCommandOption(MagickLineJoinOptions,MagickFalse,
3841 token);
3842 if (linejoin == -1)
3843 {
3844 status=MagickFalse;
3845 break;
3846 }
3847 graphic_context[n]->linejoin=(LineJoin) linejoin;
3848 break;
3849 }
3850 if (LocaleCompare("stroke-miterlimit",keyword) == 0)
3851 {
3852 (void) GetNextToken(q,&q,extent,token);
3853 graphic_context[n]->miterlimit=StringToUnsignedLong(token);
3854 break;
3855 }
3856 if (LocaleCompare("stroke-opacity",keyword) == 0)
3857 {
3858 double
3859 opacity;
3860
3861 (void) GetNextToken(q,&q,extent,token);
3862 if (graphic_context[n]->clip_path != MagickFalse)
3863 break;
3864 factor=strchr(token,'%') != (char *) NULL ? 0.01 : 1.0;
3865 opacity=MagickMin(MagickMax(factor*
3866 GetDrawValue(token,&next_token),0.0),1.0);
3867 if (token == next_token)
3868 ThrowPointExpectedException(image,token);
3869 if (graphic_context[n]->compliance == SVGCompliance)
3870 graphic_context[n]->stroke_opacity*=(1.0-opacity);
3871 else
3872 graphic_context[n]->stroke_opacity=((MagickRealType) QuantumRange-
3873 graphic_context[n]->stroke_opacity)*(1.0-opacity);
3874 if (graphic_context[n]->stroke.opacity != TransparentOpacity)
3875 graphic_context[n]->stroke.opacity=(Quantum)
3876 graphic_context[n]->stroke_opacity;
3877 else
3878 graphic_context[n]->stroke.opacity=ClampToQuantum(
3879 (MagickRealType) QuantumRange*opacity);
3880 break;
3881 }
3882 if (LocaleCompare("stroke-width",keyword) == 0)
3883 {
3884 (void) GetNextToken(q,&q,extent,token);
3885 if (graphic_context[n]->clip_path != MagickFalse)
3886 break;
3887 graphic_context[n]->stroke_width=GetDrawValue(token,&next_token);
3888 if ((token == next_token) ||
3889 (graphic_context[n]->stroke_width < 0.0))
3890 ThrowPointExpectedException(image,token);
3891 break;
3892 }
3893 status=MagickFalse;
3894 break;
3895 }
3896 case 't':
3897 case 'T':
3898 {
3899 if (LocaleCompare("text",keyword) == 0)
3900 {
3901 primitive_type=TextPrimitive;
3902 cursor=0.0;
3903 break;
3904 }
3905 if (LocaleCompare("text-align",keyword) == 0)
3906 {
3907 ssize_t
3908 align;
3909
3910 (void) GetNextToken(q,&q,extent,token);
3911 align=ParseCommandOption(MagickAlignOptions,MagickFalse,token);
3912 if (align == -1)
3913 {
3914 status=MagickFalse;
3915 break;
3916 }
3917 graphic_context[n]->align=(AlignType) align;
3918 break;
3919 }
3920 if (LocaleCompare("text-anchor",keyword) == 0)
3921 {
3922 ssize_t
3923 align;
3924
3925 (void) GetNextToken(q,&q,extent,token);
3926 align=ParseCommandOption(MagickAlignOptions,MagickFalse,token);
3927 if (align == -1)
3928 {
3929 status=MagickFalse;
3930 break;
3931 }
3932 graphic_context[n]->align=(AlignType) align;
3933 break;
3934 }
3935 if (LocaleCompare("text-antialias",keyword) == 0)
3936 {
3937 (void) GetNextToken(q,&q,extent,token);
3938 graphic_context[n]->text_antialias=StringToLong(token) != 0 ?
3939 MagickTrue : MagickFalse;
3940 break;
3941 }
3942 if (LocaleCompare("text-undercolor",keyword) == 0)
3943 {
3944 (void) GetNextToken(q,&q,extent,token);
3945 status&=QueryColorDatabase(token,&graphic_context[n]->undercolor,
3946 &image->exception);
3947 break;
3948 }
3949 if (LocaleCompare("translate",keyword) == 0)
3950 {
3951 (void) GetNextToken(q,&q,extent,token);
3952 affine.tx=GetDrawValue(token,&next_token);
3953 if (token == next_token)
3954 ThrowPointExpectedException(image,token);
3955 (void) GetNextToken(q,&q,extent,token);
3956 if (IsValidListChar((int) ((unsigned char) *token)) == MagickFalse)
3957 ThrowPointExpectedException(image,token);
3958 if (*token == ',')
3959 (void) GetNextToken(q,&q,extent,token);
3960 affine.ty=GetDrawValue(token,&next_token);
3961 if (token == next_token)
3962 ThrowPointExpectedException(image,token);
3963 break;
3964 }
3965 status=MagickFalse;
3966 break;
3967 }
3968 case 'u':
3969 case 'U':
3970 {
3971 if (LocaleCompare("use",keyword) == 0)
3972 {
3973 const char
3974 *use;
3975
3976 /*
3977 Get a macro from the MVG document, and "use" it here.
3978 */
3979 (void) GetNextToken(q,&q,extent,token);
3980 use=(const char *) GetValueFromSplayTree(macros,token);
3981 if (use != (const char *) NULL)
3982 {
3983 clone_info=CloneDrawInfo((ImageInfo *) NULL,graphic_context[n]);
3984 (void) CloneString(&clone_info->primitive,use);
3985 status=RenderMVGContent(image,clone_info,depth+1);
3986 clone_info=DestroyDrawInfo(clone_info);
3987 }
3988 break;
3989 }
3990 status=MagickFalse;
3991 break;
3992 }
3993 case 'v':
3994 case 'V':
3995 {
3996 if (LocaleCompare("viewbox",keyword) == 0)
3997 {
3998 (void) GetNextToken(q,&q,extent,token);
3999 graphic_context[n]->viewbox.x=CastDoubleToLong(ceil(
4000 GetDrawValue(token,&next_token)-0.5));
4001 if (token == next_token)
4002 ThrowPointExpectedException(image,token);
4003 (void) GetNextToken(q,&q,extent,token);
4004 if (IsValidListChar((int) ((unsigned char) *token)) == MagickFalse)
4005 ThrowPointExpectedException(image,token);
4006 if (*token == ',')
4007 (void) GetNextToken(q,&q,extent,token);
4008 graphic_context[n]->viewbox.y=CastDoubleToLong(ceil(
4009 GetDrawValue(token,&next_token)-0.5));
4010 if (token == next_token)
4011 ThrowPointExpectedException(image,token);
4012 (void) GetNextToken(q,&q,extent,token);
4013 if (IsValidListChar((int) ((unsigned char) *token)) == MagickFalse)
4014 ThrowPointExpectedException(image,token);
4015 if (*token == ',')
4016 (void) GetNextToken(q,&q,extent,token);
4017 graphic_context[n]->viewbox.width=CastDoubleToUnsigned(
4018 GetDrawValue(token,&next_token)+0.5);
4019 if (token == next_token)
4020 ThrowPointExpectedException(image,token);
4021 (void) GetNextToken(q,&q,extent,token);
4022 if (IsValidListChar((int) ((unsigned char) *token)) == MagickFalse)
4023 ThrowPointExpectedException(image,token);
4024 if (*token == ',')
4025 (void) GetNextToken(q,&q,extent,token);
4026 graphic_context[n]->viewbox.height=CastDoubleToUnsigned(
4027 GetDrawValue(token,&next_token)+0.5);
4028 if (token == next_token)
4029 ThrowPointExpectedException(image,token);
4030 break;
4031 }
4032 status=MagickFalse;
4033 break;
4034 }
4035 case 'w':
4036 case 'W':
4037 {
4038 if (LocaleCompare("word-spacing",keyword) == 0)
4039 {
4040 (void) GetNextToken(q,&q,extent,token);
4041 graphic_context[n]->interword_spacing=GetDrawValue(token,
4042 &next_token);
4043 if (token == next_token)
4044 ThrowPointExpectedException(image,token);
4045 break;
4046 }
4047 status=MagickFalse;
4048 break;
4049 }
4050 default:
4051 {
4052 status=MagickFalse;
4053 break;
4054 }
4055 }
4056 if (status == MagickFalse)
4057 break;
4058 if ((fabs(affine.sx-1.0) >= MagickEpsilon) ||
4059 (fabs(affine.rx) >= MagickEpsilon) || (fabs(affine.ry) >= MagickEpsilon) ||
4060 (fabs(affine.sy-1.0) >= MagickEpsilon) ||
4061 (fabs(affine.tx) >= MagickEpsilon) || (fabs(affine.ty) >= MagickEpsilon))
4062 {
4063 graphic_context[n]->affine.sx=current.sx*affine.sx+current.ry*affine.rx;
4064 graphic_context[n]->affine.rx=current.rx*affine.sx+current.sy*affine.rx;
4065 graphic_context[n]->affine.ry=current.sx*affine.ry+current.ry*affine.sy;
4066 graphic_context[n]->affine.sy=current.rx*affine.ry+current.sy*affine.sy;
4067 graphic_context[n]->affine.tx=current.sx*affine.tx+current.ry*affine.ty+
4068 current.tx;
4069 graphic_context[n]->affine.ty=current.rx*affine.tx+current.sy*affine.ty+
4070 current.ty;
4071 }
4072 if (primitive_type == UndefinedPrimitive)
4073 {
4074 if ((draw_info->debug != MagickFalse) && (q > p))
4075 (void) LogMagickEvent(DrawEvent,GetMagickModule()," %.*s",(int)
4076 (q-p-1),p);
4077 continue;
4078 }
4079 /*
4080 Parse the primitive attributes.
4081 */
4082 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
4083 if (primitive_info[i].text != (char *) NULL)
4084 primitive_info[i].text=DestroyString(primitive_info[i].text);
4085 i=0;
4086 mvg_info.offset=i;
4087 j=0;
4088 primitive_info[0].primitive=primitive_type;
4089 primitive_info[0].point.x=0.0;
4090 primitive_info[0].point.y=0.0;
4091 primitive_info[0].coordinates=0;
4092 primitive_info[0].method=FloodfillMethod;
4093 primitive_info[0].closed_subpath=MagickFalse;
4094 for (x=0; *q != '\0'; x++)
4095 {
4096 /*
4097 Define points.
4098 */
4099 if (IsValidPoint(q) == MagickFalse)
4100 break;
4101 (void) GetNextToken(q,&q,extent,token);
4102 point.x=GetDrawValue(token,&next_token);
4103 if (token == next_token)
4104 ThrowPointExpectedException(image,token);
4105 (void) GetNextToken(q,&q,extent,token);
4106 if (IsValidListChar((int) ((unsigned char) *token)) == MagickFalse)
4107 ThrowPointExpectedException(image,token);
4108 if (*token == ',')
4109 (void) GetNextToken(q,&q,extent,token);
4110 point.y=GetDrawValue(token,&next_token);
4111 if (token == next_token)
4112 ThrowPointExpectedException(image,token);
4113 (void) GetNextToken(q,(const char **) NULL,extent,token);
4114 if (*token == ',')
4115 (void) GetNextToken(q,&q,extent,token);
4116 primitive_info[i].primitive=primitive_type;
4117 primitive_info[i].point=point;
4118 primitive_info[i].coordinates=0;
4119 primitive_info[i].method=FloodfillMethod;
4120 primitive_info[i].closed_subpath=MagickFalse;
4121 i++;
4122 mvg_info.offset=i;
4123 if (i < (ssize_t) number_points)
4124 continue;
4125 status&=CheckPrimitiveExtent(&mvg_info,(double) number_points);
4126 primitive_info=(*mvg_info.primitive_info);
4127 if (status == MagickFalse)
4128 break;
4129 }
4130 if (status == MagickFalse)
4131 break;
4132 if (primitive_info[j].text != (char *) NULL)
4133 primitive_info[j].text=DestroyString(primitive_info[j].text);
4134 primitive_info[j].primitive=primitive_type;
4135 primitive_info[j].coordinates=(size_t) x;
4136 primitive_info[j].method=FloodfillMethod;
4137 primitive_info[j].closed_subpath=MagickFalse;
4138 /*
4139 Circumscribe primitive within a circle.
4140 */
4141 bounds.x1=primitive_info[j].point.x;
4142 bounds.y1=primitive_info[j].point.y;
4143 bounds.x2=primitive_info[j].point.x;
4144 bounds.y2=primitive_info[j].point.y;
4145 for (k=1; k < (ssize_t) primitive_info[j].coordinates; k++)
4146 {
4147 point=primitive_info[j+k].point;
4148 if (point.x < bounds.x1)
4149 bounds.x1=point.x;
4150 if (point.y < bounds.y1)
4151 bounds.y1=point.y;
4152 if (point.x > bounds.x2)
4153 bounds.x2=point.x;
4154 if (point.y > bounds.y2)
4155 bounds.y2=point.y;
4156 }
4157 /*
4158 Speculate how many points our primitive might consume.
4159 */
4160 coordinates=(double) primitive_info[j].coordinates;
4161 switch (primitive_type)
4162 {
4163 case RectanglePrimitive:
4164 {
4165 coordinates*=5.0;
4166 break;
4167 }
4168 case RoundRectanglePrimitive:
4169 {
4170 double
4171 alpha,
4172 beta,
4173 radius;
4174
4175 alpha=bounds.x2-bounds.x1;
4176 beta=bounds.y2-bounds.y1;
4177 radius=hypot(alpha,beta);
4178 coordinates*=5.0;
4179 coordinates+=2.0*((size_t) ceil((double) MagickPI*radius))+6.0*
4180 BezierQuantum+360.0;
4181 break;
4182 }
4183 case BezierPrimitive:
4184 {
4185 coordinates=(BezierQuantum*(double) primitive_info[j].coordinates);
4186 break;
4187 }
4188 case PathPrimitive:
4189 {
4190 char
4191 *s,
4192 *t;
4193
4194 (void) GetNextToken(q,&q,extent,token);
4195 coordinates=1.0;
4196 t=token;
4197 for (s=token; *s != '\0'; s=t)
4198 {
4199 double
4200 value;
4201
4202 value=GetDrawValue(s,&t);
4203 (void) value;
4204 if (s == t)
4205 {
4206 t++;
4207 continue;
4208 }
4209 coordinates++;
4210 }
4211 for (s=token; *s != '\0'; s++)
4212 if (strspn(s,"AaCcQqSsTt") != 0)
4213 coordinates+=(20.0*BezierQuantum)+360.0;
4214 break;
4215 }
4216 default:
4217 break;
4218 }
4219 if (status == MagickFalse)
4220 break;
4221 if (((size_t) (i+coordinates)) >= number_points)
4222 {
4223 /*
4224 Resize based on speculative points required by primitive.
4225 */
4226 number_points+=coordinates+1;
4227 if (number_points < (size_t) coordinates)
4228 {
4229 (void) ThrowMagickException(&image->exception,GetMagickModule(),
4230 ResourceLimitError,"MemoryAllocationFailed","`%s'",
4231 image->filename);
4232 status=MagickFalse;
4233 break;
4234 }
4235 mvg_info.offset=i;
4236 status&=CheckPrimitiveExtent(&mvg_info,(double) number_points);
4237 primitive_info=(*mvg_info.primitive_info);
4238 if (status == MagickFalse)
4239 break;
4240 }
4241 status&=CheckPrimitiveExtent(&mvg_info,PrimitiveExtentPad);
4242 primitive_info=(*mvg_info.primitive_info);
4243 if (status == MagickFalse)
4244 break;
4245 mvg_info.offset=j;
4246 switch (primitive_type)
4247 {
4248 case PointPrimitive:
4249 default:
4250 {
4251 if (primitive_info[j].coordinates != 1)
4252 {
4253 status=MagickFalse;
4254 break;
4255 }
4256 status&=TracePoint(primitive_info+j,primitive_info[j].point);
4257 primitive_info=(*mvg_info.primitive_info);
4258 if (status == MagickFalse)
4259 break;
4260 i=(ssize_t) (j+primitive_info[j].coordinates);
4261 break;
4262 }
4263 case LinePrimitive:
4264 {
4265 if (primitive_info[j].coordinates != 2)
4266 {
4267 status=MagickFalse;
4268 break;
4269 }
4270 status&=TraceLine(primitive_info+j,primitive_info[j].point,
4271 primitive_info[j+1].point);
4272 primitive_info=(*mvg_info.primitive_info);
4273 if (status == MagickFalse)
4274 break;
4275 i=(ssize_t) (j+primitive_info[j].coordinates);
4276 break;
4277 }
4278 case RectanglePrimitive:
4279 {
4280 if (primitive_info[j].coordinates != 2)
4281 {
4282 status=MagickFalse;
4283 break;
4284 }
4285 status&=TraceRectangle(primitive_info+j,primitive_info[j].point,
4286 primitive_info[j+1].point);
4287 primitive_info=(*mvg_info.primitive_info);
4288 if (status == MagickFalse)
4289 break;
4290 i=(ssize_t) (j+primitive_info[j].coordinates);
4291 break;
4292 }
4293 case RoundRectanglePrimitive:
4294 {
4295 if (primitive_info[j].coordinates != 3)
4296 {
4297 status=MagickFalse;
4298 break;
4299 }
4300 if ((primitive_info[j+2].point.x < 0.0) ||
4301 (primitive_info[j+2].point.y < 0.0))
4302 {
4303 status=MagickFalse;
4304 break;
4305 }
4306 if ((primitive_info[j+1].point.x-primitive_info[j].point.x) < 0.0)
4307 {
4308 status=MagickFalse;
4309 break;
4310 }
4311 if ((primitive_info[j+1].point.y-primitive_info[j].point.y) < 0.0)
4312 {
4313 status=MagickFalse;
4314 break;
4315 }
4316 status&=TraceRoundRectangle(&mvg_info,primitive_info[j].point,
4317 primitive_info[j+1].point,primitive_info[j+2].point);
4318 primitive_info=(*mvg_info.primitive_info);
4319 if (status == MagickFalse)
4320 break;
4321 i=(ssize_t) (j+primitive_info[j].coordinates);
4322 break;
4323 }
4324 case ArcPrimitive:
4325 {
4326 if (primitive_info[j].coordinates != 3)
4327 {
4328 status=MagickFalse;
4329 break;
4330 }
4331 status&=TraceArc(&mvg_info,primitive_info[j].point,
4332 primitive_info[j+1].point,primitive_info[j+2].point);
4333 primitive_info=(*mvg_info.primitive_info);
4334 if (status == MagickFalse)
4335 break;
4336 i=(ssize_t) (j+primitive_info[j].coordinates);
4337 break;
4338 }
4339 case EllipsePrimitive:
4340 {
4341 if (primitive_info[j].coordinates != 3)
4342 {
4343 status=MagickFalse;
4344 break;
4345 }
4346 if ((primitive_info[j+1].point.x < 0.0) ||
4347 (primitive_info[j+1].point.y < 0.0))
4348 {
4349 status=MagickFalse;
4350 break;
4351 }
4352 status&=TraceEllipse(&mvg_info,primitive_info[j].point,
4353 primitive_info[j+1].point,primitive_info[j+2].point);
4354 primitive_info=(*mvg_info.primitive_info);
4355 if (status == MagickFalse)
4356 break;
4357 i=(ssize_t) (j+primitive_info[j].coordinates);
4358 break;
4359 }
4360 case CirclePrimitive:
4361 {
4362 if (primitive_info[j].coordinates != 2)
4363 {
4364 status=MagickFalse;
4365 break;
4366 }
4367 status&=TraceCircle(&mvg_info,primitive_info[j].point,
4368 primitive_info[j+1].point);
4369 primitive_info=(*mvg_info.primitive_info);
4370 if (status == MagickFalse)
4371 break;
4372 i=(ssize_t) (j+primitive_info[j].coordinates);
4373 break;
4374 }
4375 case PolylinePrimitive:
4376 {
4377 if (primitive_info[j].coordinates < 1)
4378 {
4379 status=MagickFalse;
4380 break;
4381 }
4382 break;
4383 }
4384 case PolygonPrimitive:
4385 {
4386 if (primitive_info[j].coordinates < 3)
4387 {
4388 status=MagickFalse;
4389 break;
4390 }
4391 primitive_info[i]=primitive_info[j];
4392 primitive_info[i].coordinates=0;
4393 primitive_info[j].coordinates++;
4394 primitive_info[j].closed_subpath=MagickTrue;
4395 i++;
4396 break;
4397 }
4398 case BezierPrimitive:
4399 {
4400 if (primitive_info[j].coordinates < 3)
4401 {
4402 status=MagickFalse;
4403 break;
4404 }
4405 status&=TraceBezier(&mvg_info,primitive_info[j].coordinates);
4406 primitive_info=(*mvg_info.primitive_info);
4407 if (status == MagickFalse)
4408 break;
4409 i=(ssize_t) (j+primitive_info[j].coordinates);
4410 break;
4411 }
4412 case PathPrimitive:
4413 {
4414 coordinates=(double) TracePath(image,&mvg_info,token);
4415 primitive_info=(*mvg_info.primitive_info);
4416 if (status == MagickFalse)
4417 break;
4418 if (coordinates < 0.0)
4419 {
4420 status=MagickFalse;
4421 break;
4422 }
4423 i=(ssize_t) (j+coordinates);
4424 break;
4425 }
4426 case ColorPrimitive:
4427 case MattePrimitive:
4428 {
4429 ssize_t
4430 method;
4431
4432 if (primitive_info[j].coordinates != 1)
4433 {
4434 status=MagickFalse;
4435 break;
4436 }
4437 (void) GetNextToken(q,&q,extent,token);
4438 method=ParseCommandOption(MagickMethodOptions,MagickFalse,token);
4439 if (method == -1)
4440 {
4441 status=MagickFalse;
4442 break;
4443 }
4444 primitive_info[j].method=(PaintMethod) method;
4445 break;
4446 }
4447 case TextPrimitive:
4448 {
4449 char
4450 geometry[MagickPathExtent];
4451
4452 if (primitive_info[j].coordinates != 1)
4453 {
4454 status=MagickFalse;
4455 break;
4456 }
4457 if (*token != ',')
4458 (void) GetNextToken(q,&q,extent,token);
4459 (void) CloneString(&primitive_info[j].text,token);
4460 /*
4461 Compute text cursor offset.
4462 */
4463 clone_info=CloneDrawInfo((ImageInfo *) NULL,graphic_context[n]);
4464 if ((fabs(mvg_info.point.x-primitive_info->point.x) < MagickEpsilon) &&
4465 (fabs(mvg_info.point.y-primitive_info->point.y) < MagickEpsilon))
4466 {
4467 mvg_info.point=primitive_info->point;
4468 primitive_info->point.x+=cursor;
4469 }
4470 else
4471 {
4472 mvg_info.point=primitive_info->point;
4473 cursor=0.0;
4474 }
4475 (void) FormatLocaleString(geometry,MagickPathExtent,"%+f%+f",
4476 primitive_info->point.x,primitive_info->point.y);
4477 clone_info->render=MagickFalse;
4478 clone_info->text=AcquireString(token);
4479 status&=GetTypeMetrics(image,clone_info,&metrics);
4480 clone_info=DestroyDrawInfo(clone_info);
4481 cursor+=metrics.width;
4482 if (graphic_context[n]->compliance != SVGCompliance)
4483 cursor=0.0;
4484 break;
4485 }
4486 case ImagePrimitive:
4487 {
4488 if (primitive_info[j].coordinates != 2)
4489 {
4490 status=MagickFalse;
4491 break;
4492 }
4493 (void) GetNextToken(q,&q,extent,token);
4494 (void) CloneString(&primitive_info[j].text,token);
4495 break;
4496 }
4497 }
4498 mvg_info.offset=i;
4499 if (status == 0)
4500 break;
4501 primitive_info[i].primitive=UndefinedPrimitive;
4502 if ((draw_info->debug != MagickFalse) && (q > p))
4503 (void) LogMagickEvent(DrawEvent,GetMagickModule()," %.*s",(int) (q-p),p);
4504 /*
4505 Sanity check.
4506 */
4507 status&=CheckPrimitiveExtent(&mvg_info,ExpandAffine(
4508 &graphic_context[n]->affine));
4509 primitive_info=(*mvg_info.primitive_info);
4510 if (status == 0)
4511 break;
4512 status&=CheckPrimitiveExtent(&mvg_info,(double)
4513 graphic_context[n]->stroke_width);
4514 primitive_info=(*mvg_info.primitive_info);
4515 if (status == 0)
4516 break;
4517 if (i == 0)
4518 continue;
4519 /*
4520 Transform points.
4521 */
4522 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
4523 {
4524 point=primitive_info[i].point;
4525 primitive_info[i].point.x=graphic_context[n]->affine.sx*point.x+
4526 graphic_context[n]->affine.ry*point.y+graphic_context[n]->affine.tx;
4527 primitive_info[i].point.y=graphic_context[n]->affine.rx*point.x+
4528 graphic_context[n]->affine.sy*point.y+graphic_context[n]->affine.ty;
4529 point=primitive_info[i].point;
4530 if (point.x < graphic_context[n]->bounds.x1)
4531 graphic_context[n]->bounds.x1=point.x;
4532 if (point.y < graphic_context[n]->bounds.y1)
4533 graphic_context[n]->bounds.y1=point.y;
4534 if (point.x > graphic_context[n]->bounds.x2)
4535 graphic_context[n]->bounds.x2=point.x;
4536 if (point.y > graphic_context[n]->bounds.y2)
4537 graphic_context[n]->bounds.y2=point.y;
4538 if (primitive_info[i].primitive == ImagePrimitive)
4539 break;
4540 if (i >= (ssize_t) number_points)
4541 ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed");
4542 }
4543 if (graphic_context[n]->render != MagickFalse)
4544 {
4545 if ((n != 0) && (graphic_context[n]->compliance != SVGCompliance) &&
4546 (graphic_context[n]->clip_mask != (char *) NULL) &&
4547 (LocaleCompare(graphic_context[n]->clip_mask,
4548 graphic_context[n-1]->clip_mask) != 0))
4549 {
4550 const char
4551 *clip_path;
4552
4553 clip_path=(const char *) GetValueFromSplayTree(macros,
4554 graphic_context[n]->clip_mask);
4555 if (clip_path != (const char *) NULL)
4556 (void) SetImageArtifact(image,graphic_context[n]->clip_mask,
4557 clip_path);
4558 status&=DrawClipPath(image,graphic_context[n],
4559 graphic_context[n]->clip_mask);
4560 }
4561 status&=DrawPrimitive(image,graphic_context[n],primitive_info);
4562 }
4563 proceed=SetImageProgress(image,RenderImageTag,q-primitive,(MagickSizeType)
4564 primitive_extent);
4565 if (proceed == MagickFalse)
4566 break;
4567 if (status == 0)
4568 break;
4569 }
4570 if (draw_info->debug != MagickFalse)
4571 (void) LogMagickEvent(DrawEvent,GetMagickModule(),"end draw-image");
4572 /*
4573 Relinquish resources.
4574 */
4575 macros=DestroySplayTree(macros);
4576 token=DestroyString(token);
4577 if (primitive_info != (PrimitiveInfo *) NULL)
4578 {
4579 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
4580 if (primitive_info[i].text != (char *) NULL)
4581 primitive_info[i].text=DestroyString(primitive_info[i].text);
4582 primitive_info=(PrimitiveInfo *) RelinquishMagickMemory(primitive_info);
4583 }
4584 primitive=DestroyString(primitive);
4585 for ( ; n >= 0; n--)
4586 graphic_context[n]=DestroyDrawInfo(graphic_context[n]);
4587 graphic_context=(DrawInfo **) RelinquishMagickMemory(graphic_context);
4588 if (status == MagickFalse)
4589 ThrowBinaryImageException(DrawError,
4590 "NonconformingDrawingPrimitiveDefinition",keyword);
4591 return(status != 0 ? MagickTrue : MagickFalse);
4592}
4593
4594MagickExport MagickBooleanType DrawImage(Image *image,const DrawInfo *draw_info)
4595{
4596 return(RenderMVGContent(image,draw_info,0));
4597}
4598␌
4599/*
4600%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4601% %
4602% %
4603% %
4604% D r a w P a t t e r n P a t h %
4605% %
4606% %
4607% %
4608%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4609%
4610% DrawPatternPath() draws a pattern.
4611%
4612% The format of the DrawPatternPath method is:
4613%
4614% MagickBooleanType DrawPatternPath(Image *image,const DrawInfo *draw_info,
4615% const char *name,Image **pattern)
4616%
4617% A description of each parameter follows:
4618%
4619% o image: the image.
4620%
4621% o draw_info: the draw info.
4622%
4623% o name: the pattern name.
4624%
4625% o image: the image.
4626%
4627*/
4628MagickExport MagickBooleanType DrawPatternPath(Image *image,
4629 const DrawInfo *draw_info,const char *name,Image **pattern)
4630{
4631 char
4632 property[MaxTextExtent];
4633
4634 const char
4635 *geometry,
4636 *path,
4637 *type;
4638
4639 DrawInfo
4640 *clone_info;
4641
4642 ImageInfo
4643 *image_info;
4644
4645 MagickBooleanType
4646 status;
4647
4648 assert(image != (Image *) NULL);
4649 assert(image->signature == MagickCoreSignature);
4650 assert(draw_info != (const DrawInfo *) NULL);
4651 if (IsEventLogging() != MagickFalse)
4652 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
4653 assert(name != (const char *) NULL);
4654 (void) FormatLocaleString(property,MaxTextExtent,"%s",name);
4655 path=GetImageArtifact(image,property);
4656 if (path == (const char *) NULL)
4657 return(MagickFalse);
4658 (void) FormatLocaleString(property,MaxTextExtent,"%s-geometry",name);
4659 geometry=GetImageArtifact(image,property);
4660 if (geometry == (const char *) NULL)
4661 return(MagickFalse);
4662 if ((*pattern) != (Image *) NULL)
4663 *pattern=DestroyImage(*pattern);
4664 image_info=AcquireImageInfo();
4665 image_info->size=AcquireString(geometry);
4666 *pattern=AcquireImage(image_info);
4667 image_info=DestroyImageInfo(image_info);
4668 (void) QueryColorDatabase("#00000000",&(*pattern)->background_color,
4669 &image->exception);
4670 (void) SetImageBackgroundColor(*pattern);
4671 if (draw_info->debug != MagickFalse)
4672 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
4673 "begin pattern-path %s %s",name,geometry);
4674 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
4675 if (clone_info->fill_pattern != (Image *) NULL)
4676 clone_info->fill_pattern=DestroyImage(clone_info->fill_pattern);
4677 if (clone_info->stroke_pattern != (Image *) NULL)
4678 clone_info->stroke_pattern=DestroyImage(clone_info->stroke_pattern);
4679 (void) FormatLocaleString(property,MaxTextExtent,"%s-type",name);
4680 type=GetImageArtifact(image,property);
4681 if (type != (const char *) NULL)
4682 clone_info->gradient.type=(GradientType) ParseCommandOption(
4683 MagickGradientOptions,MagickFalse,type);
4684 (void) CloneString(&clone_info->primitive,path);
4685 status=RenderMVGContent(*pattern,clone_info,0);
4686 clone_info=DestroyDrawInfo(clone_info);
4687 if (draw_info->debug != MagickFalse)
4688 (void) LogMagickEvent(DrawEvent,GetMagickModule(),"end pattern-path");
4689 return(status);
4690}
4691␌
4692/*
4693%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4694% %
4695% %
4696% %
4697+ D r a w P o l y g o n P r i m i t i v e %
4698% %
4699% %
4700% %
4701%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4702%
4703% DrawPolygonPrimitive() draws a polygon on the image.
4704%
4705% The format of the DrawPolygonPrimitive method is:
4706%
4707% MagickBooleanType DrawPolygonPrimitive(Image *image,
4708% const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
4709%
4710% A description of each parameter follows:
4711%
4712% o image: the image.
4713%
4714% o draw_info: the draw info.
4715%
4716% o primitive_info: Specifies a pointer to a PrimitiveInfo structure.
4717%
4718*/
4719
4720static PolygonInfo **DestroyPolygonTLS(PolygonInfo **polygon_info)
4721{
4722 ssize_t
4723 i;
4724
4725 assert(polygon_info != (PolygonInfo **) NULL);
4726 for (i=0; i < (ssize_t) GetMagickResourceLimit(ThreadResource); i++)
4727 if (polygon_info[i] != (PolygonInfo *) NULL)
4728 polygon_info[i]=DestroyPolygonInfo(polygon_info[i]);
4729 polygon_info=(PolygonInfo **) RelinquishMagickMemory(polygon_info);
4730 return(polygon_info);
4731}
4732
4733static PolygonInfo **AcquirePolygonTLS(const DrawInfo *draw_info,
4734 const PrimitiveInfo *primitive_info,ExceptionInfo *exception)
4735{
4736 PathInfo
4737 *magick_restrict path_info;
4738
4739 PolygonInfo
4740 **polygon_info;
4741
4742 size_t
4743 number_threads;
4744
4745 number_threads=(size_t) GetMagickResourceLimit(ThreadResource);
4746 polygon_info=(PolygonInfo **) AcquireQuantumMemory(number_threads,
4747 sizeof(*polygon_info));
4748 if (polygon_info == (PolygonInfo **) NULL)
4749 {
4750 (void) ThrowMagickException(exception,GetMagickModule(),
4751 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4752 return((PolygonInfo **) NULL);
4753 }
4754 (void) memset(polygon_info,0,number_threads*sizeof(*polygon_info));
4755 path_info=ConvertPrimitiveToPath(draw_info,primitive_info,exception);
4756 if (path_info == (PathInfo *) NULL)
4757 return(DestroyPolygonTLS(polygon_info));
4758 polygon_info[0]=ConvertPathToPolygon(path_info,exception);
4759 if (polygon_info[0] == (PolygonInfo *) NULL)
4760 {
4761 (void) ThrowMagickException(exception,GetMagickModule(),
4762 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4763 return(DestroyPolygonTLS(polygon_info));
4764 }
4765 path_info=(PathInfo *) RelinquishMagickMemory(path_info);
4766 return(polygon_info);
4767}
4768
4769static MagickBooleanType AcquirePolygonEdgesTLS(PolygonInfo **polygon_info,
4770 const size_t number_threads,ExceptionInfo *exception)
4771{
4772 ssize_t
4773 i;
4774
4775 for (i=1; i < (ssize_t) number_threads; i++)
4776 {
4777 EdgeInfo
4778 *edge_info;
4779
4780 ssize_t
4781 j;
4782
4783 polygon_info[i]=(PolygonInfo *) AcquireMagickMemory(
4784 sizeof(*polygon_info[i]));
4785 if (polygon_info[i] == (PolygonInfo *) NULL)
4786 {
4787 (void) ThrowMagickException(exception,GetMagickModule(),
4788 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4789 return(MagickFalse);
4790 }
4791 polygon_info[i]->number_edges=0;
4792 edge_info=polygon_info[0]->edges;
4793 polygon_info[i]->edges=(EdgeInfo *) AcquireQuantumMemory(
4794 polygon_info[0]->number_edges,sizeof(*edge_info));
4795 if (polygon_info[i]->edges == (EdgeInfo *) NULL)
4796 {
4797 (void) ThrowMagickException(exception,GetMagickModule(),
4798 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4799 return(MagickFalse);
4800 }
4801 (void) memcpy(polygon_info[i]->edges,edge_info,
4802 polygon_info[0]->number_edges*sizeof(*edge_info));
4803 for (j=0; j < (ssize_t) polygon_info[i]->number_edges; j++)
4804 polygon_info[i]->edges[j].points=(PointInfo *) NULL;
4805 polygon_info[i]->number_edges=polygon_info[0]->number_edges;
4806 for (j=0; j < (ssize_t) polygon_info[i]->number_edges; j++)
4807 {
4808 edge_info=polygon_info[0]->edges+j;
4809 polygon_info[i]->edges[j].points=(PointInfo *) AcquireQuantumMemory(
4810 edge_info->number_points,sizeof(*edge_info));
4811 if (polygon_info[i]->edges[j].points == (PointInfo *) NULL)
4812 {
4813 (void) ThrowMagickException(exception,GetMagickModule(),
4814 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4815 return(MagickFalse);
4816 }
4817 (void) memcpy(polygon_info[i]->edges[j].points,edge_info->points,
4818 edge_info->number_points*sizeof(*edge_info->points));
4819 }
4820 }
4821 return(MagickTrue);
4822}
4823
4824static size_t DestroyEdge(PolygonInfo *polygon_info,const ssize_t edge)
4825{
4826 assert(edge < (ssize_t) polygon_info->number_edges);
4827 polygon_info->edges[edge].points=(PointInfo *) RelinquishMagickMemory(
4828 polygon_info->edges[edge].points);
4829 polygon_info->number_edges--;
4830 if (edge < (ssize_t) polygon_info->number_edges)
4831 (void) memmove(polygon_info->edges+edge,polygon_info->edges+edge+1,
4832 (size_t) (polygon_info->number_edges-edge)*sizeof(*polygon_info->edges));
4833 return(polygon_info->number_edges);
4834}
4835
4836static double GetOpacityPixel(PolygonInfo *polygon_info,const double mid,
4837 const MagickBooleanType fill,const FillRule fill_rule,const ssize_t x,
4838 const ssize_t y,double *stroke_opacity)
4839{
4840 double
4841 alpha,
4842 beta,
4843 distance,
4844 subpath_opacity;
4845
4846 PointInfo
4847 delta;
4848
4849 EdgeInfo
4850 *p;
4851
4852 const PointInfo
4853 *q;
4854
4855 ssize_t
4856 i;
4857
4858 ssize_t
4859 j,
4860 winding_number;
4861
4862 /*
4863 Compute fill & stroke opacity for this (x,y) point.
4864 */
4865 *stroke_opacity=0.0;
4866 subpath_opacity=0.0;
4867 p=polygon_info->edges;
4868 for (j=0; j < (ssize_t) polygon_info->number_edges; j++, p++)
4869 {
4870 if ((double) y <= (p->bounds.y1-mid-0.5))
4871 break;
4872 if ((double) y > (p->bounds.y2+mid+0.5))
4873 {
4874 p--;
4875 (void) DestroyEdge(polygon_info,j--);
4876 continue;
4877 }
4878 if (((double) x <= (p->bounds.x1-mid-0.5)) ||
4879 ((double) x > (p->bounds.x2+mid+0.5)))
4880 continue;
4881 i=(ssize_t) MagickMax((double) p->highwater,1.0);
4882 for ( ; i < (ssize_t) p->number_points; i++)
4883 {
4884 if ((double) y <= (p->points[i-1].y-mid-0.5))
4885 break;
4886 if ((double) y > (p->points[i].y+mid+0.5))
4887 continue;
4888 if (p->scanline != (double) y)
4889 {
4890 p->scanline=(double) y;
4891 p->highwater=(size_t) i;
4892 }
4893 /*
4894 Compute distance between a point and an edge.
4895 */
4896 q=p->points+i-1;
4897 delta.x=(q+1)->x-q->x;
4898 delta.y=(q+1)->y-q->y;
4899 beta=delta.x*(x-q->x)+delta.y*(y-q->y);
4900 if (beta <= 0.0)
4901 {
4902 delta.x=(double) x-q->x;
4903 delta.y=(double) y-q->y;
4904 distance=delta.x*delta.x+delta.y*delta.y;
4905 }
4906 else
4907 {
4908 alpha=delta.x*delta.x+delta.y*delta.y;
4909 if (beta >= alpha)
4910 {
4911 delta.x=(double) x-(q+1)->x;
4912 delta.y=(double) y-(q+1)->y;
4913 distance=delta.x*delta.x+delta.y*delta.y;
4914 }
4915 else
4916 {
4917 alpha=MagickSafeReciprocal(alpha);
4918 beta=delta.x*(y-q->y)-delta.y*(x-q->x);
4919 distance=alpha*beta*beta;
4920 }
4921 }
4922 /*
4923 Compute stroke & subpath opacity.
4924 */
4925 beta=0.0;
4926 if (p->ghostline == MagickFalse)
4927 {
4928 alpha=mid+0.5;
4929 if ((*stroke_opacity < 1.0) &&
4930 (distance <= ((alpha+0.25)*(alpha+0.25))))
4931 {
4932 alpha=mid-0.5;
4933 if (distance <= ((alpha+0.25)*(alpha+0.25)))
4934 *stroke_opacity=1.0;
4935 else
4936 {
4937 beta=1.0;
4938 if (fabs(distance-1.0) >= MagickEpsilon)
4939 beta=sqrt((double) distance);
4940 alpha=beta-mid-0.5;
4941 if (*stroke_opacity < ((alpha-0.25)*(alpha-0.25)))
4942 *stroke_opacity=(alpha-0.25)*(alpha-0.25);
4943 }
4944 }
4945 }
4946 if ((fill == MagickFalse) || (distance > 1.0) || (subpath_opacity >= 1.0))
4947 continue;
4948 if (distance <= 0.0)
4949 {
4950 subpath_opacity=1.0;
4951 continue;
4952 }
4953 if (distance > 1.0)
4954 continue;
4955 if (fabs(beta) < MagickEpsilon)
4956 {
4957 beta=1.0;
4958 if (fabs(distance-1.0) >= MagickEpsilon)
4959 beta=sqrt(distance);
4960 }
4961 alpha=beta-1.0;
4962 if (subpath_opacity < (alpha*alpha))
4963 subpath_opacity=alpha*alpha;
4964 }
4965 }
4966 /*
4967 Compute fill opacity.
4968 */
4969 if (fill == MagickFalse)
4970 return(0.0);
4971 if (subpath_opacity >= 1.0)
4972 return(1.0);
4973 /*
4974 Determine winding number.
4975 */
4976 winding_number=0;
4977 p=polygon_info->edges;
4978 for (j=0; j < (ssize_t) polygon_info->number_edges; j++, p++)
4979 {
4980 if ((double) y <= p->bounds.y1)
4981 break;
4982 if (((double) y > p->bounds.y2) || ((double) x <= p->bounds.x1))
4983 continue;
4984 if ((double) x > p->bounds.x2)
4985 {
4986 winding_number+=p->direction != 0 ? 1 : -1;
4987 continue;
4988 }
4989 i=(ssize_t) MagickMax((double) p->highwater,1.0);
4990 for ( ; i < (ssize_t) (p->number_points-1); i++)
4991 if ((double) y <= p->points[i].y)
4992 break;
4993 q=p->points+i-1;
4994 if ((((q+1)->x-q->x)*(y-q->y)) <= (((q+1)->y-q->y)*(x-q->x)))
4995 winding_number+=p->direction != 0 ? 1 : -1;
4996 }
4997 if (fill_rule != NonZeroRule)
4998 {
4999 if ((MagickAbsoluteValue(winding_number) & 0x01) != 0)
5000 return(1.0);
5001 }
5002 else
5003 if (MagickAbsoluteValue(winding_number) != 0)
5004 return(1.0);
5005 return(subpath_opacity);
5006}
5007
5008static MagickBooleanType DrawPolygonPrimitive(Image *image,
5009 const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
5010{
5011 typedef struct _ExtentInfo
5012 {
5013 ssize_t
5014 x1,
5015 y1,
5016 x2,
5017 y2;
5018 } ExtentInfo;
5019
5020 CacheView
5021 *image_view;
5022
5023 const char
5024 *artifact;
5025
5026 double
5027 mid;
5028
5029 ExceptionInfo
5030 *exception;
5031
5032 ExtentInfo
5033 poly_extent;
5034
5035 MagickBooleanType
5036 fill,
5037 status;
5038
5039 PolygonInfo
5040 **magick_restrict polygon_info;
5041
5042 EdgeInfo
5043 *p;
5044
5045 SegmentInfo
5046 bounds;
5047
5048 size_t
5049 number_threads = 1;
5050
5051 ssize_t
5052 i,
5053 y;
5054
5055 assert(image != (Image *) NULL);
5056 assert(image->signature == MagickCoreSignature);
5057 assert(draw_info != (DrawInfo *) NULL);
5058 assert(draw_info->signature == MagickCoreSignature);
5059 assert(primitive_info != (PrimitiveInfo *) NULL);
5060 if (IsEventLogging() != MagickFalse)
5061 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
5062 if (primitive_info->coordinates <= 1)
5063 return(MagickTrue);
5064 /*
5065 Compute bounding box.
5066 */
5067 polygon_info=AcquirePolygonTLS(draw_info,primitive_info,&image->exception);
5068 if (polygon_info == (PolygonInfo **) NULL)
5069 return(MagickFalse);
5070 if (draw_info->debug != MagickFalse)
5071 (void) LogMagickEvent(DrawEvent,GetMagickModule()," begin draw-polygon");
5072 fill=(primitive_info->method == FillToBorderMethod) ||
5073 (primitive_info->method == FloodfillMethod) ? MagickTrue : MagickFalse;
5074 mid=ExpandAffine(&draw_info->affine)*draw_info->stroke_width/2.0;
5075 bounds=polygon_info[0]->edges[0].bounds;
5076 artifact=GetImageArtifact(image,"draw:render-bounding-rectangles");
5077 if (IsStringTrue(artifact) != MagickFalse)
5078 (void) DrawBoundingRectangles(image,draw_info,polygon_info[0]);
5079 for (i=1; i < (ssize_t) polygon_info[0]->number_edges; i++)
5080 {
5081 p=polygon_info[0]->edges+i;
5082 if (p->bounds.x1 < bounds.x1)
5083 bounds.x1=p->bounds.x1;
5084 if (p->bounds.y1 < bounds.y1)
5085 bounds.y1=p->bounds.y1;
5086 if (p->bounds.x2 > bounds.x2)
5087 bounds.x2=p->bounds.x2;
5088 if (p->bounds.y2 > bounds.y2)
5089 bounds.y2=p->bounds.y2;
5090 }
5091 bounds.x1-=(mid+1.0);
5092 bounds.y1-=(mid+1.0);
5093 bounds.x2+=(mid+1.0);
5094 bounds.y2+=(mid+1.0);
5095 if ((bounds.x1 >= (double) image->columns) ||
5096 (bounds.y1 >= (double) image->rows) ||
5097 (bounds.x2 <= 0.0) || (bounds.y2 <= 0.0))
5098 {
5099 polygon_info=DestroyPolygonTLS(polygon_info);
5100 return(MagickTrue); /* virtual polygon */
5101 }
5102 bounds.x1=bounds.x1 < 0.0 ? 0.0 : bounds.x1 >= (double) image->columns-1.0 ?
5103 (double) image->columns-1.0 : bounds.x1;
5104 bounds.y1=bounds.y1 < 0.0 ? 0.0 : bounds.y1 >= (double) image->rows-1.0 ?
5105 (double) image->rows-1.0 : bounds.y1;
5106 bounds.x2=bounds.x2 < 0.0 ? 0.0 : bounds.x2 >= (double) image->columns-1.0 ?
5107 (double) image->columns-1.0 : bounds.x2;
5108 bounds.y2=bounds.y2 < 0.0 ? 0.0 : bounds.y2 >= (double) image->rows-1.0 ?
5109 (double) image->rows-1.0 : bounds.y2;
5110 poly_extent.x1=CastDoubleToLong(ceil(bounds.x1-0.5));
5111 poly_extent.y1=CastDoubleToLong(ceil(bounds.y1-0.5));
5112 poly_extent.x2=CastDoubleToLong(floor(bounds.x2+0.5));
5113 poly_extent.y2=CastDoubleToLong(floor(bounds.y2+0.5));
5114 number_threads=GetMagickNumberThreads(image,image,poly_extent.y2-
5115 poly_extent.y1+1,1);
5116 status=AcquirePolygonEdgesTLS(polygon_info,number_threads,&image->exception);
5117 if (status == MagickFalse)
5118 {
5119 polygon_info=DestroyPolygonTLS(polygon_info);
5120 return(status);
5121 }
5122 status=MagickTrue;
5123 exception=(&image->exception);
5124 image_view=AcquireAuthenticCacheView(image,exception);
5125 if ((primitive_info->coordinates == 1) ||
5126 (polygon_info[0]->number_edges == 0))
5127 {
5128 /*
5129 Draw point.
5130 */
5131#if defined(MAGICKCORE_OPENMP_SUPPORT)
5132 #pragma omp parallel for schedule(static) shared(status) \
5133 num_threads(number_threads)
5134#endif
5135 for (y=poly_extent.y1; y <= poly_extent.y2; y++)
5136 {
5137 MagickBooleanType
5138 sync;
5139
5140 PixelPacket
5141 *magick_restrict q;
5142
5143 ssize_t
5144 x;
5145
5146 if (status == MagickFalse)
5147 continue;
5148 x=poly_extent.x1;
5149 q=GetCacheViewAuthenticPixels(image_view,x,y,(size_t) (poly_extent.x2-
5150 x+1),1,exception);
5151 if (q == (PixelPacket *) NULL)
5152 {
5153 status=MagickFalse;
5154 continue;
5155 }
5156 for ( ; x <= poly_extent.x2; x++)
5157 {
5158 if ((x == CastDoubleToLong(ceil(primitive_info->point.x-0.5))) &&
5159 (y == CastDoubleToLong(ceil(primitive_info->point.y-0.5))))
5160 (void) GetFillColor(draw_info,x-poly_extent.x1,y-poly_extent.y1,q);
5161 q++;
5162 }
5163 sync=SyncCacheViewAuthenticPixels(image_view,exception);
5164 if (sync == MagickFalse)
5165 status=MagickFalse;
5166 }
5167 image_view=DestroyCacheView(image_view);
5168 polygon_info=DestroyPolygonTLS(polygon_info);
5169 if (draw_info->debug != MagickFalse)
5170 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5171 " end draw-polygon");
5172 return(status);
5173 }
5174 /*
5175 Draw polygon or line.
5176 */
5177 poly_extent.y1=CastDoubleToLong(ceil(bounds.y1-0.5));
5178 poly_extent.y2=CastDoubleToLong(floor(bounds.y2+0.5));
5179#if defined(MAGICKCORE_OPENMP_SUPPORT)
5180 #pragma omp parallel for schedule(static) shared(status) \
5181 num_threads(number_threads)
5182#endif
5183 for (y=poly_extent.y1; y <= poly_extent.y2; y++)
5184 {
5185 const int
5186 id = GetOpenMPThreadId();
5187
5188 PixelPacket
5189 fill_color,
5190 stroke_color;
5191
5192 PixelPacket
5193 *magick_restrict q;
5194
5195 ssize_t
5196 x;
5197
5198 if (status == MagickFalse)
5199 continue;
5200 q=GetCacheViewAuthenticPixels(image_view,poly_extent.x1,y,(size_t)
5201 (poly_extent.x2-poly_extent.x1+1),1,exception);
5202 if (q == (PixelPacket *) NULL)
5203 {
5204 status=MagickFalse;
5205 continue;
5206 }
5207 for (x=poly_extent.x1; x <= poly_extent.x2; x++)
5208 {
5209 double
5210 fill_opacity,
5211 stroke_opacity;
5212
5213 /*
5214 Fill and/or stroke.
5215 */
5216 fill_opacity=GetOpacityPixel(polygon_info[id],mid,fill,
5217 draw_info->fill_rule,x,y,&stroke_opacity);
5218 if (draw_info->stroke_antialias == MagickFalse)
5219 {
5220 fill_opacity=fill_opacity >= AntialiasThreshold ? 1.0 : 0.0;
5221 stroke_opacity=stroke_opacity >= AntialiasThreshold ? 1.0 : 0.0;
5222 }
5223 (void) GetFillColor(draw_info,x-poly_extent.x1,y-poly_extent.y1,
5224 &fill_color);
5225 fill_opacity=(double) ((MagickRealType) QuantumRange-fill_opacity*
5226 ((MagickRealType) QuantumRange-(MagickRealType) fill_color.opacity));
5227 MagickCompositeOver(&fill_color,(MagickRealType) fill_opacity,q,
5228 (MagickRealType) q->opacity,q);
5229 (void) GetStrokeColor(draw_info,x-poly_extent.x1,y-poly_extent.y1,
5230 &stroke_color);
5231 stroke_opacity=(double) ((MagickRealType) QuantumRange-stroke_opacity*
5232 ((MagickRealType) QuantumRange-(MagickRealType) stroke_color.opacity));
5233 MagickCompositeOver(&stroke_color,(MagickRealType) stroke_opacity,q,
5234 (MagickRealType) q->opacity,q);
5235 q++;
5236 }
5237 if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
5238 status=MagickFalse;
5239 }
5240 image_view=DestroyCacheView(image_view);
5241 polygon_info=DestroyPolygonTLS(polygon_info);
5242 if (draw_info->debug != MagickFalse)
5243 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end draw-polygon");
5244 return(status);
5245}
5246␌
5247/*
5248%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5249% %
5250% %
5251% %
5252% D r a w P r i m i t i v e %
5253% %
5254% %
5255% %
5256%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5257%
5258% DrawPrimitive() draws a primitive (line, rectangle, ellipse) on the image.
5259%
5260% The format of the DrawPrimitive method is:
5261%
5262% MagickBooleanType DrawPrimitive(Image *image,const DrawInfo *draw_info,
5263% PrimitiveInfo *primitive_info)
5264%
5265% A description of each parameter follows:
5266%
5267% o image: the image.
5268%
5269% o draw_info: the draw info.
5270%
5271% o primitive_info: Specifies a pointer to a PrimitiveInfo structure.
5272%
5273*/
5274static void LogPrimitiveInfo(const PrimitiveInfo *primitive_info)
5275{
5276 const char
5277 *methods[] =
5278 {
5279 "point",
5280 "replace",
5281 "floodfill",
5282 "filltoborder",
5283 "reset",
5284 "?"
5285 };
5286
5287 PointInfo
5288 p,
5289 q,
5290 point;
5291
5292 ssize_t
5293 i,
5294 x;
5295
5296 ssize_t
5297 coordinates,
5298 y;
5299
5300 x=CastDoubleToLong(ceil(primitive_info->point.x-0.5));
5301 y=CastDoubleToLong(ceil(primitive_info->point.y-0.5));
5302 switch (primitive_info->primitive)
5303 {
5304 case PointPrimitive:
5305 {
5306 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5307 "PointPrimitive %.20g,%.20g %s",(double) x,(double) y,
5308 methods[primitive_info->method]);
5309 return;
5310 }
5311 case ColorPrimitive:
5312 {
5313 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5314 "ColorPrimitive %.20g,%.20g %s",(double) x,(double) y,
5315 methods[primitive_info->method]);
5316 return;
5317 }
5318 case MattePrimitive:
5319 {
5320 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5321 "MattePrimitive %.20g,%.20g %s",(double) x,(double) y,
5322 methods[primitive_info->method]);
5323 return;
5324 }
5325 case TextPrimitive:
5326 {
5327 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5328 "TextPrimitive %.20g,%.20g",(double) x,(double) y);
5329 return;
5330 }
5331 case ImagePrimitive:
5332 {
5333 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5334 "ImagePrimitive %.20g,%.20g",(double) x,(double) y);
5335 return;
5336 }
5337 default:
5338 break;
5339 }
5340 coordinates=0;
5341 p=primitive_info[0].point;
5342 q.x=(-1.0);
5343 q.y=(-1.0);
5344 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
5345 {
5346 point=primitive_info[i].point;
5347 if (coordinates <= 0)
5348 {
5349 coordinates=(ssize_t) primitive_info[i].coordinates;
5350 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5351 " begin open (%.20g)",(double) coordinates);
5352 p=point;
5353 }
5354 point=primitive_info[i].point;
5355 if ((fabs(q.x-point.x) >= MagickEpsilon) ||
5356 (fabs(q.y-point.y) >= MagickEpsilon))
5357 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5358 " %.20g: %.18g,%.18g",(double) coordinates,point.x,point.y);
5359 else
5360 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5361 " %.20g: %g %g (duplicate)",(double) coordinates,point.x,point.y);
5362 q=point;
5363 coordinates--;
5364 if (coordinates > 0)
5365 continue;
5366 if ((fabs(p.x-point.x) >= MagickEpsilon) ||
5367 (fabs(p.y-point.y) >= MagickEpsilon))
5368 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end last (%.20g)",
5369 (double) coordinates);
5370 else
5371 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end open (%.20g)",
5372 (double) coordinates);
5373 }
5374}
5375
5376MagickExport MagickBooleanType DrawPrimitive(Image *image,
5377 const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
5378{
5379 CacheView
5380 *image_view;
5381
5382 ExceptionInfo
5383 *exception;
5384
5385 MagickStatusType
5386 status;
5387
5388 ssize_t
5389 i,
5390 x;
5391
5392 ssize_t
5393 y;
5394
5395 if (draw_info->debug != MagickFalse)
5396 {
5397 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5398 " begin draw-primitive");
5399 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5400 " affine: %g,%g,%g,%g,%g,%g",draw_info->affine.sx,
5401 draw_info->affine.rx,draw_info->affine.ry,draw_info->affine.sy,
5402 draw_info->affine.tx,draw_info->affine.ty);
5403 }
5404 exception=(&image->exception);
5405 status=MagickTrue;
5406 if ((IsGrayColorspace(image->colorspace) != MagickFalse) &&
5407 ((IsPixelGray(&draw_info->fill) == MagickFalse) ||
5408 (IsPixelGray(&draw_info->stroke) == MagickFalse)))
5409 status=SetImageColorspace(image,sRGBColorspace);
5410 if (draw_info->compliance == SVGCompliance)
5411 {
5412 status&=SetImageClipMask(image,draw_info->clipping_mask);
5413 status&=SetImageMask(image,draw_info->composite_mask);
5414 }
5415 x=CastDoubleToLong(ceil(primitive_info->point.x-0.5));
5416 y=CastDoubleToLong(ceil(primitive_info->point.y-0.5));
5417 image_view=AcquireAuthenticCacheView(image,exception);
5418 switch (primitive_info->primitive)
5419 {
5420 case ColorPrimitive:
5421 {
5422 switch (primitive_info->method)
5423 {
5424 case PointMethod:
5425 default:
5426 {
5427 PixelPacket
5428 *q;
5429
5430 q=GetCacheViewAuthenticPixels(image_view,x,y,1,1,exception);
5431 if (q == (PixelPacket *) NULL)
5432 break;
5433 (void) GetFillColor(draw_info,x,y,q);
5434 status&=SyncCacheViewAuthenticPixels(image_view,exception);
5435 break;
5436 }
5437 case ReplaceMethod:
5438 {
5439 PixelPacket
5440 target;
5441
5442 status&=GetOneCacheViewVirtualPixel(image_view,x,y,&target,exception);
5443 for (y=0; y < (ssize_t) image->rows; y++)
5444 {
5445 PixelPacket
5446 *magick_restrict q;
5447
5448 q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
5449 exception);
5450 if (q == (PixelPacket *) NULL)
5451 break;
5452 for (x=0; x < (ssize_t) image->columns; x++)
5453 {
5454 if (IsColorSimilar(image,q,&target) == MagickFalse)
5455 {
5456 q++;
5457 continue;
5458 }
5459 (void) GetFillColor(draw_info,x,y,q);
5460 q++;
5461 }
5462 status&=SyncCacheViewAuthenticPixels(image_view,exception);
5463 if (status == MagickFalse)
5464 break;
5465 }
5466 break;
5467 }
5468 case FloodfillMethod:
5469 case FillToBorderMethod:
5470 {
5471 MagickPixelPacket
5472 target;
5473
5474 status&=GetOneVirtualMagickPixel(image,x,y,&target,exception);
5475 if (primitive_info->method == FillToBorderMethod)
5476 {
5477 target.red=(MagickRealType) draw_info->border_color.red;
5478 target.green=(MagickRealType) draw_info->border_color.green;
5479 target.blue=(MagickRealType) draw_info->border_color.blue;
5480 }
5481 status&=FloodfillPaintImage(image,DefaultChannels,draw_info,&target,x,
5482 y,primitive_info->method == FloodfillMethod ? MagickFalse :
5483 MagickTrue);
5484 break;
5485 }
5486 case ResetMethod:
5487 {
5488 for (y=0; y < (ssize_t) image->rows; y++)
5489 {
5490 PixelPacket
5491 *magick_restrict q;
5492
5493 ssize_t
5494 x;
5495
5496 q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
5497 exception);
5498 if (q == (PixelPacket *) NULL)
5499 break;
5500 for (x=0; x < (ssize_t) image->columns; x++)
5501 {
5502 (void) GetFillColor(draw_info,x,y,q);
5503 q++;
5504 }
5505 status&=SyncCacheViewAuthenticPixels(image_view,exception);
5506 if (status == MagickFalse)
5507 break;
5508 }
5509 break;
5510 }
5511 }
5512 break;
5513 }
5514 case MattePrimitive:
5515 {
5516 if (image->matte == MagickFalse)
5517 status&=SetImageAlphaChannel(image,OpaqueAlphaChannel);
5518 switch (primitive_info->method)
5519 {
5520 case PointMethod:
5521 default:
5522 {
5523 PixelPacket
5524 pixel;
5525
5526 PixelPacket
5527 *q;
5528
5529 q=GetCacheViewAuthenticPixels(image_view,x,y,1,1,exception);
5530 if (q == (PixelPacket *) NULL)
5531 break;
5532 (void) GetFillColor(draw_info,x,y,&pixel);
5533 SetPixelOpacity(q,pixel.opacity);
5534 status&=SyncCacheViewAuthenticPixels(image_view,exception);
5535 break;
5536 }
5537 case ReplaceMethod:
5538 {
5539 PixelPacket
5540 pixel,
5541 target;
5542
5543 status&=GetOneCacheViewVirtualPixel(image_view,x,y,&target,exception);
5544 for (y=0; y < (ssize_t) image->rows; y++)
5545 {
5546 PixelPacket
5547 *magick_restrict q;
5548
5549 ssize_t
5550 x;
5551
5552 q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
5553 exception);
5554 if (q == (PixelPacket *) NULL)
5555 break;
5556 for (x=0; x < (ssize_t) image->columns; x++)
5557 {
5558 if (IsColorSimilar(image,q,&target) == MagickFalse)
5559 {
5560 q++;
5561 continue;
5562 }
5563 (void) GetFillColor(draw_info,x,y,&pixel);
5564 SetPixelOpacity(q,pixel.opacity);
5565 q++;
5566 }
5567 status&=SyncCacheViewAuthenticPixels(image_view,exception);
5568 if (status == MagickFalse)
5569 break;
5570 }
5571 break;
5572 }
5573 case FloodfillMethod:
5574 case FillToBorderMethod:
5575 {
5576 MagickPixelPacket
5577 target;
5578
5579 status&=GetOneVirtualMagickPixel(image,x,y,&target,exception);
5580 if (primitive_info->method == FillToBorderMethod)
5581 {
5582 target.red=(MagickRealType) draw_info->border_color.red;
5583 target.green=(MagickRealType) draw_info->border_color.green;
5584 target.blue=(MagickRealType) draw_info->border_color.blue;
5585 }
5586 status&=FloodfillPaintImage(image,OpacityChannel,draw_info,&target,x,
5587 y,primitive_info->method == FloodfillMethod ? MagickFalse :
5588 MagickTrue);
5589 break;
5590 }
5591 case ResetMethod:
5592 {
5593 PixelPacket
5594 pixel;
5595
5596 for (y=0; y < (ssize_t) image->rows; y++)
5597 {
5598 PixelPacket
5599 *magick_restrict q;
5600
5601 ssize_t
5602 x;
5603
5604 q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
5605 exception);
5606 if (q == (PixelPacket *) NULL)
5607 break;
5608 for (x=0; x < (ssize_t) image->columns; x++)
5609 {
5610 (void) GetFillColor(draw_info,x,y,&pixel);
5611 SetPixelOpacity(q,pixel.opacity);
5612 q++;
5613 }
5614 status&=SyncCacheViewAuthenticPixels(image_view,exception);
5615 if (status == MagickFalse)
5616 break;
5617 }
5618 break;
5619 }
5620 }
5621 break;
5622 }
5623 case ImagePrimitive:
5624 {
5625 AffineMatrix
5626 affine;
5627
5628 char
5629 composite_geometry[MaxTextExtent],
5630 magic[MagickPathExtent] = {'\0'};
5631
5632 Image
5633 *composite_image,
5634 *composite_images;
5635
5636 ImageInfo
5637 *clone_info;
5638
5639 RectangleInfo
5640 geometry;
5641
5642 ssize_t
5643 x1,
5644 y1;
5645
5646 if (primitive_info->text == (char *) NULL)
5647 break;
5648 clone_info=AcquireImageInfo();
5649 composite_images=(Image *) NULL;
5650 if (LocaleNCompare(primitive_info->text,"data:",5) == 0)
5651 composite_images=ReadInlineImage(clone_info,primitive_info->text,
5652 &image->exception);
5653 else
5654 if (*primitive_info->text != '\0')
5655 {
5656 /*
5657 Read composite image.
5658 */
5659 (void) CopyMagickString(clone_info->filename,primitive_info->text,
5660 MagickPathExtent);
5661 (void) SetImageInfo(clone_info,1,exception);
5662 (void) CopyMagickString(clone_info->filename,primitive_info->text,
5663 MagickPathExtent);
5664 if (clone_info->size != (char *) NULL)
5665 clone_info->size=DestroyString(clone_info->size);
5666 if (clone_info->extract != (char *) NULL)
5667 clone_info->extract=DestroyString(clone_info->extract);
5668 GetPathComponent(clone_info->filename,MagickPath,magic);
5669 if (*magic == '\0')
5670 composite_images=ReadImage(clone_info,exception);
5671 else
5672 (void) ThrowMagickException(exception,GetMagickModule(),
5673 FileOpenError,"UnableToOpenFile","`%s'",clone_info->filename);
5674 }
5675 clone_info=DestroyImageInfo(clone_info);
5676 if (composite_images == (Image *) NULL)
5677 {
5678 status=0;
5679 break;
5680 }
5681 composite_image=RemoveFirstImageFromList(&composite_images);
5682 composite_images=DestroyImageList(composite_images);
5683 (void) SetImageProgressMonitor(composite_image,(MagickProgressMonitor)
5684 NULL,(void *) NULL);
5685 x1=CastDoubleToLong(ceil(primitive_info[1].point.x-0.5));
5686 y1=CastDoubleToLong(ceil(primitive_info[1].point.y-0.5));
5687 if (((x1 != 0L) && (x1 != (ssize_t) composite_image->columns)) ||
5688 ((y1 != 0L) && (y1 != (ssize_t) composite_image->rows)))
5689 {
5690 char
5691 geometry[MaxTextExtent];
5692
5693 /*
5694 Resize image.
5695 */
5696 (void) FormatLocaleString(geometry,MaxTextExtent,"%gx%g!",
5697 primitive_info[1].point.x,primitive_info[1].point.y);
5698 composite_image->filter=image->filter;
5699 status&=TransformImage(&composite_image,(char *) NULL,geometry);
5700 }
5701 if (composite_image->matte == MagickFalse)
5702 status&=SetImageAlphaChannel(composite_image,OpaqueAlphaChannel);
5703 if (draw_info->opacity != OpaqueOpacity)
5704 status&=SetImageOpacity(composite_image,draw_info->opacity);
5705 SetGeometry(image,&geometry);
5706 image->gravity=draw_info->gravity;
5707 geometry.x=x;
5708 geometry.y=y;
5709 (void) FormatLocaleString(composite_geometry,MaxTextExtent,
5710 "%.20gx%.20g%+.20g%+.20g",(double) composite_image->columns,(double)
5711 composite_image->rows,(double) geometry.x,(double) geometry.y);
5712 (void) ParseGravityGeometry(image,composite_geometry,&geometry,
5713 &image->exception);
5714 affine=draw_info->affine;
5715 affine.tx=(double) geometry.x;
5716 affine.ty=(double) geometry.y;
5717 composite_image->interpolate=image->interpolate;
5718 if ((draw_info->compose == OverCompositeOp) ||
5719 (draw_info->compose == SrcOverCompositeOp))
5720 status&=DrawAffineImage(image,composite_image,&affine);
5721 else
5722 status&=CompositeImage(image,draw_info->compose,composite_image,
5723 geometry.x,geometry.y);
5724 composite_image=DestroyImage(composite_image);
5725 break;
5726 }
5727 case PointPrimitive:
5728 {
5729 PixelPacket
5730 fill_color;
5731
5732 PixelPacket
5733 *q;
5734
5735 if ((y < 0) || (y >= (ssize_t) image->rows))
5736 break;
5737 if ((x < 0) || (x >= (ssize_t) image->columns))
5738 break;
5739 q=GetCacheViewAuthenticPixels(image_view,x,y,1,1,exception);
5740 if (q == (PixelPacket *) NULL)
5741 break;
5742 (void) GetFillColor(draw_info,x,y,&fill_color);
5743 MagickCompositeOver(&fill_color,(MagickRealType) fill_color.opacity,q,
5744 (MagickRealType) q->opacity,q);
5745 status&=SyncCacheViewAuthenticPixels(image_view,exception);
5746 break;
5747 }
5748 case TextPrimitive:
5749 {
5750 char
5751 geometry[MaxTextExtent];
5752
5753 DrawInfo
5754 *clone_info;
5755
5756 if (primitive_info->text == (char *) NULL)
5757 break;
5758 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
5759 (void) CloneString(&clone_info->text,primitive_info->text);
5760 (void) FormatLocaleString(geometry,MaxTextExtent,"%+f%+f",
5761 primitive_info->point.x,primitive_info->point.y);
5762 (void) CloneString(&clone_info->geometry,geometry);
5763 status&=AnnotateImage(image,clone_info);
5764 clone_info=DestroyDrawInfo(clone_info);
5765 break;
5766 }
5767 default:
5768 {
5769 double
5770 mid,
5771 scale;
5772
5773 DrawInfo
5774 *clone_info;
5775
5776 if (IsEventLogging() != MagickFalse)
5777 LogPrimitiveInfo(primitive_info);
5778 scale=ExpandAffine(&draw_info->affine);
5779 if ((draw_info->dash_pattern != (double *) NULL) &&
5780 (fabs(draw_info->dash_pattern[0]) >= MagickEpsilon) &&
5781 (fabs(scale*draw_info->stroke_width) >= MagickEpsilon) &&
5782 (draw_info->stroke.opacity != (Quantum) TransparentOpacity))
5783 {
5784 /*
5785 Draw dash polygon.
5786 */
5787 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
5788 clone_info->stroke_width=0.0;
5789 clone_info->stroke.opacity=(Quantum) TransparentOpacity;
5790 status&=DrawPolygonPrimitive(image,clone_info,primitive_info);
5791 clone_info=DestroyDrawInfo(clone_info);
5792 if (status != MagickFalse)
5793 status&=DrawDashPolygon(draw_info,primitive_info,image);
5794 break;
5795 }
5796 mid=ExpandAffine(&draw_info->affine)*draw_info->stroke_width/2.0;
5797 if ((mid > 1.0) &&
5798 ((draw_info->stroke.opacity != (Quantum) TransparentOpacity) ||
5799 (draw_info->stroke_pattern != (Image *) NULL)))
5800 {
5801 double
5802 x,
5803 y;
5804
5805 MagickBooleanType
5806 closed_path;
5807
5808 /*
5809 Draw strokes while respecting line cap/join attributes.
5810 */
5811 closed_path=primitive_info[0].closed_subpath;
5812 i=(ssize_t) primitive_info[0].coordinates;
5813 x=fabs(primitive_info[i-1].point.x-primitive_info[0].point.x);
5814 y=fabs(primitive_info[i-1].point.y-primitive_info[0].point.y);
5815 if ((x < MagickEpsilon) && (y < MagickEpsilon))
5816 closed_path=MagickTrue;
5817 if ((((draw_info->linecap == RoundCap) ||
5818 (closed_path != MagickFalse)) &&
5819 (draw_info->linejoin == RoundJoin)) ||
5820 (primitive_info[i].primitive != UndefinedPrimitive))
5821 {
5822 status&=DrawPolygonPrimitive(image,draw_info,primitive_info);
5823 break;
5824 }
5825 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
5826 clone_info->stroke_width=0.0;
5827 clone_info->stroke.opacity=(Quantum) TransparentOpacity;
5828 status&=DrawPolygonPrimitive(image,clone_info,primitive_info);
5829 clone_info=DestroyDrawInfo(clone_info);
5830 if (status != MagickFalse)
5831 status&=DrawStrokePolygon(image,draw_info,primitive_info);
5832 break;
5833 }
5834 status&=DrawPolygonPrimitive(image,draw_info,primitive_info);
5835 break;
5836 }
5837 }
5838 image_view=DestroyCacheView(image_view);
5839 if (draw_info->compliance == SVGCompliance)
5840 {
5841 status&=SetImageClipMask(image,(Image *) NULL);
5842 status&=SetImageMask(image,(Image *) NULL);
5843 }
5844 if (draw_info->debug != MagickFalse)
5845 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end draw-primitive");
5846 return(status != 0 ? MagickTrue : MagickFalse);
5847}
5848␌
5849/*
5850%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5851% %
5852% %
5853% %
5854+ D r a w S t r o k e P o l y g o n %
5855% %
5856% %
5857% %
5858%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5859%
5860% DrawStrokePolygon() draws a stroked polygon (line, rectangle, ellipse) on
5861% the image while respecting the line cap and join attributes.
5862%
5863% The format of the DrawStrokePolygon method is:
5864%
5865% MagickBooleanType DrawStrokePolygon(Image *image,
5866% const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
5867%
5868% A description of each parameter follows:
5869%
5870% o image: the image.
5871%
5872% o draw_info: the draw info.
5873%
5874% o primitive_info: Specifies a pointer to a PrimitiveInfo structure.
5875%
5876%
5877*/
5878
5879static MagickBooleanType DrawRoundLinecap(Image *image,
5880 const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
5881{
5882 PrimitiveInfo
5883 linecap[5];
5884
5885 ssize_t
5886 i;
5887
5888 if (primitive_info->coordinates < 1)
5889 return(MagickFalse);
5890 for (i=0; i < 4; i++)
5891 linecap[i]=(*primitive_info);
5892 linecap[0].coordinates=4;
5893 linecap[1].point.x+=2.0*MagickEpsilon;
5894 linecap[2].point.x+=2.0*MagickEpsilon;
5895 linecap[2].point.y+=2.0*MagickEpsilon;
5896 linecap[3].point.y+=2.0*MagickEpsilon;
5897 linecap[4].primitive=UndefinedPrimitive;
5898 return(DrawPolygonPrimitive(image,draw_info,linecap));
5899}
5900
5901static MagickBooleanType DrawStrokePolygon(Image *image,
5902 const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
5903{
5904 DrawInfo
5905 *clone_info;
5906
5907 MagickBooleanType
5908 closed_path;
5909
5910 MagickStatusType
5911 status;
5912
5913 PrimitiveInfo
5914 *stroke_polygon;
5915
5916 const PrimitiveInfo
5917 *p,
5918 *q;
5919
5920 /*
5921 Draw stroked polygon.
5922 */
5923 if (draw_info->debug != MagickFalse)
5924 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5925 " begin draw-stroke-polygon");
5926 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
5927 clone_info->fill=draw_info->stroke;
5928 if (clone_info->fill_pattern != (Image *) NULL)
5929 clone_info->fill_pattern=DestroyImage(clone_info->fill_pattern);
5930 if (clone_info->stroke_pattern != (Image *) NULL)
5931 clone_info->fill_pattern=CloneImage(clone_info->stroke_pattern,0,0,
5932 MagickTrue,&clone_info->stroke_pattern->exception);
5933 clone_info->stroke.opacity=(Quantum) TransparentOpacity;
5934 clone_info->stroke_width=0.0;
5935 clone_info->fill_rule=NonZeroRule;
5936 status=MagickTrue;
5937 for (p=primitive_info; p->primitive != UndefinedPrimitive; p+=(ptrdiff_t) p->coordinates)
5938 {
5939 if (p->coordinates == 1)
5940 continue;
5941 stroke_polygon=TraceStrokePolygon(draw_info,p,&image->exception);
5942 if (stroke_polygon == (PrimitiveInfo *) NULL)
5943 {
5944 status=0;
5945 break;
5946 }
5947 status&=DrawPolygonPrimitive(image,clone_info,stroke_polygon);
5948 stroke_polygon=(PrimitiveInfo *) RelinquishMagickMemory(stroke_polygon);
5949 if (status == 0)
5950 break;
5951 q=p+p->coordinates-1;
5952 closed_path=p->closed_subpath;
5953 if ((draw_info->linecap == RoundCap) && (closed_path == MagickFalse))
5954 {
5955 status&=DrawRoundLinecap(image,draw_info,p);
5956 status&=DrawRoundLinecap(image,draw_info,q);
5957 }
5958 }
5959 clone_info=DestroyDrawInfo(clone_info);
5960 if (draw_info->debug != MagickFalse)
5961 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5962 " end draw-stroke-polygon");
5963 return(status != 0 ? MagickTrue : MagickFalse);
5964}
5965␌
5966/*
5967%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5968% %
5969% %
5970% %
5971% G e t A f f i n e M a t r i x %
5972% %
5973% %
5974% %
5975%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5976%
5977% GetAffineMatrix() returns an AffineMatrix initialized to the identity
5978% matrix.
5979%
5980% The format of the GetAffineMatrix method is:
5981%
5982% void GetAffineMatrix(AffineMatrix *affine_matrix)
5983%
5984% A description of each parameter follows:
5985%
5986% o affine_matrix: the affine matrix.
5987%
5988*/
5989MagickExport void GetAffineMatrix(AffineMatrix *affine_matrix)
5990{
5991 assert(affine_matrix != (AffineMatrix *) NULL);
5992 if (IsEventLogging() != MagickFalse)
5993 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
5994 (void) memset(affine_matrix,0,sizeof(*affine_matrix));
5995 affine_matrix->sx=1.0;
5996 affine_matrix->sy=1.0;
5997}
5998␌
5999/*
6000%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6001% %
6002% %
6003% %
6004+ G e t D r a w I n f o %
6005% %
6006% %
6007% %
6008%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6009%
6010% GetDrawInfo() initializes draw_info to default values from image_info.
6011%
6012% The format of the GetDrawInfo method is:
6013%
6014% void GetDrawInfo(const ImageInfo *image_info,DrawInfo *draw_info)
6015%
6016% A description of each parameter follows:
6017%
6018% o image_info: the image info..
6019%
6020% o draw_info: the draw info.
6021%
6022*/
6023MagickExport void GetDrawInfo(const ImageInfo *image_info,DrawInfo *draw_info)
6024{
6025 char
6026 *next_token;
6027
6028 const char
6029 *option;
6030
6031 ExceptionInfo
6032 *exception;
6033
6034 /*
6035 Initialize draw attributes.
6036 */
6037 assert(draw_info != (DrawInfo *) NULL);
6038 if (IsEventLogging() != MagickFalse)
6039 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
6040 (void) memset(draw_info,0,sizeof(*draw_info));
6041 draw_info->image_info=CloneImageInfo(image_info);
6042 GetAffineMatrix(&draw_info->affine);
6043 exception=AcquireExceptionInfo();
6044 (void) QueryColorDatabase("#000F",&draw_info->fill,exception);
6045 (void) QueryColorDatabase("#FFF0",&draw_info->stroke,exception);
6046 draw_info->stroke_antialias=draw_info->image_info->antialias;
6047 draw_info->stroke_width=1.0;
6048 draw_info->fill_rule=EvenOddRule;
6049 draw_info->opacity=OpaqueOpacity;
6050 draw_info->fill_opacity=OpaqueOpacity;
6051 draw_info->stroke_opacity=OpaqueOpacity;
6052 draw_info->linecap=ButtCap;
6053 draw_info->linejoin=MiterJoin;
6054 draw_info->miterlimit=10;
6055 draw_info->decorate=NoDecoration;
6056 if (draw_info->image_info->font != (char *) NULL)
6057 draw_info->font=AcquireString(draw_info->image_info->font);
6058 if (draw_info->image_info->density != (char *) NULL)
6059 draw_info->density=AcquireString(draw_info->image_info->density);
6060 draw_info->text_antialias=draw_info->image_info->antialias;
6061 draw_info->pointsize=12.0;
6062 if (fabs(draw_info->image_info->pointsize) >= MagickEpsilon)
6063 draw_info->pointsize=draw_info->image_info->pointsize;
6064 draw_info->undercolor.opacity=(Quantum) TransparentOpacity;
6065 draw_info->border_color=draw_info->image_info->border_color;
6066 draw_info->compose=OverCompositeOp;
6067 if (draw_info->image_info->server_name != (char *) NULL)
6068 draw_info->server_name=AcquireString(draw_info->image_info->server_name);
6069 draw_info->render=MagickTrue;
6070 draw_info->clip_path=MagickFalse;
6071 draw_info->debug=(GetLogEventMask() & (DrawEvent | AnnotateEvent)) != 0 ?
6072 MagickTrue : MagickFalse;
6073 option=GetImageOption(draw_info->image_info,"direction");
6074 if (option != (const char *) NULL)
6075 draw_info->direction=(DirectionType) ParseCommandOption(
6076 MagickDirectionOptions,MagickFalse,option);
6077 else
6078 draw_info->direction=UndefinedDirection;
6079 option=GetImageOption(draw_info->image_info,"encoding");
6080 if (option != (const char *) NULL)
6081 (void) CloneString(&draw_info->encoding,option);
6082 option=GetImageOption(draw_info->image_info,"family");
6083 if (option != (const char *) NULL)
6084 (void) CloneString(&draw_info->family,option);
6085 option=GetImageOption(draw_info->image_info,"fill");
6086 if (option != (const char *) NULL)
6087 (void) QueryColorDatabase(option,&draw_info->fill,exception);
6088 option=GetImageOption(draw_info->image_info,"gravity");
6089 if (option != (const char *) NULL)
6090 draw_info->gravity=(GravityType) ParseCommandOption(MagickGravityOptions,
6091 MagickFalse,option);
6092 option=GetImageOption(draw_info->image_info,"interline-spacing");
6093 if (option != (const char *) NULL)
6094 draw_info->interline_spacing=GetDrawValue(option,&next_token);
6095 option=GetImageOption(draw_info->image_info,"interword-spacing");
6096 if (option != (const char *) NULL)
6097 draw_info->interword_spacing=GetDrawValue(option,&next_token);
6098 option=GetImageOption(draw_info->image_info,"kerning");
6099 if (option != (const char *) NULL)
6100 draw_info->kerning=GetDrawValue(option,&next_token);
6101 option=GetImageOption(draw_info->image_info,"stroke");
6102 if (option != (const char *) NULL)
6103 (void) QueryColorDatabase(option,&draw_info->stroke,exception);
6104 option=GetImageOption(draw_info->image_info,"strokewidth");
6105 if (option != (const char *) NULL)
6106 draw_info->stroke_width=GetDrawValue(option,&next_token);
6107 option=GetImageOption(draw_info->image_info,"style");
6108 if (option != (const char *) NULL)
6109 draw_info->style=(StyleType) ParseCommandOption(MagickStyleOptions,
6110 MagickFalse,option);
6111 option=GetImageOption(draw_info->image_info,"undercolor");
6112 if (option != (const char *) NULL)
6113 (void) QueryColorDatabase(option,&draw_info->undercolor,exception);
6114 option=GetImageOption(draw_info->image_info,"weight");
6115 if (option != (const char *) NULL)
6116 {
6117 ssize_t
6118 weight;
6119
6120 weight=ParseCommandOption(MagickWeightOptions,MagickFalse,option);
6121 if (weight == -1)
6122 weight=(ssize_t) StringToUnsignedLong(option);
6123 draw_info->weight=(size_t) weight;
6124 }
6125 exception=DestroyExceptionInfo(exception);
6126 draw_info->signature=MagickCoreSignature;
6127}
6128␌
6129/*
6130%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6131% %
6132% %
6133% %
6134+ P e r m u t a t e %
6135% %
6136% %
6137% %
6138%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6139%
6140% Permutate() returns the permutation of the (n,k).
6141%
6142% The format of the Permutate method is:
6143%
6144% void Permutate(ssize_t n,ssize_t k)
6145%
6146% A description of each parameter follows:
6147%
6148% o n:
6149%
6150% o k:
6151%
6152%
6153*/
6154static inline double Permutate(const ssize_t n,const ssize_t k)
6155{
6156 double
6157 r;
6158
6159 ssize_t
6160 i;
6161
6162 r=1.0;
6163 for (i=k+1; i <= n; i++)
6164 r*=i;
6165 for (i=1; i <= (n-k); i++)
6166 r/=i;
6167 return(r);
6168}
6169␌
6170/*
6171%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6172% %
6173% %
6174% %
6175+ T r a c e P r i m i t i v e %
6176% %
6177% %
6178% %
6179%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6180%
6181% TracePrimitive is a collection of methods for generating graphic
6182% primitives such as arcs, ellipses, paths, etc.
6183%
6184*/
6185
6186static MagickBooleanType TraceArc(MVGInfo *mvg_info,const PointInfo start,
6187 const PointInfo end,const PointInfo degrees)
6188{
6189 PointInfo
6190 center,
6191 radius;
6192
6193 center.x=0.5*(end.x+start.x);
6194 center.y=0.5*(end.y+start.y);
6195 radius.x=fabs(center.x-start.x);
6196 radius.y=fabs(center.y-start.y);
6197 return(TraceEllipse(mvg_info,center,radius,degrees));
6198}
6199
6200static MagickBooleanType TraceArcPath(MVGInfo *mvg_info,const PointInfo start,
6201 const PointInfo end,const PointInfo arc,const double angle,
6202 const MagickBooleanType large_arc,const MagickBooleanType sweep)
6203{
6204 double
6205 alpha,
6206 beta,
6207 delta,
6208 factor,
6209 gamma,
6210 theta;
6211
6212 MagickStatusType
6213 status;
6214
6215 PointInfo
6216 center,
6217 points[3],
6218 radii;
6219
6220 double
6221 cosine,
6222 sine;
6223
6224 PrimitiveInfo
6225 *primitive_info;
6226
6227 PrimitiveInfo
6228 *p;
6229
6230 ssize_t
6231 i;
6232
6233 size_t
6234 arc_segments;
6235
6236 ssize_t
6237 offset;
6238
6239 offset=mvg_info->offset;
6240 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6241 primitive_info->coordinates=0;
6242 if ((fabs(start.x-end.x) < MagickEpsilon) &&
6243 (fabs(start.y-end.y) < MagickEpsilon))
6244 return(TracePoint(primitive_info,end));
6245 radii.x=fabs(arc.x);
6246 radii.y=fabs(arc.y);
6247 if ((radii.x < MagickEpsilon) || (radii.y < MagickEpsilon))
6248 return(TraceLine(primitive_info,start,end));
6249 cosine=cos(DegreesToRadians(fmod((double) angle,360.0)));
6250 sine=sin(DegreesToRadians(fmod((double) angle,360.0)));
6251 center.x=(double) (cosine*(end.x-start.x)/2+sine*(end.y-start.y)/2);
6252 center.y=(double) (cosine*(end.y-start.y)/2-sine*(end.x-start.x)/2);
6253 delta=(center.x*center.x)/(radii.x*radii.x)+(center.y*center.y)/
6254 (radii.y*radii.y);
6255 if (delta < MagickEpsilon)
6256 return(TraceLine(primitive_info,start,end));
6257 if (delta > 1.0)
6258 {
6259 radii.x*=sqrt((double) delta);
6260 radii.y*=sqrt((double) delta);
6261 }
6262 points[0].x=(double) (cosine*start.x/radii.x+sine*start.y/radii.x);
6263 points[0].y=(double) (cosine*start.y/radii.y-sine*start.x/radii.y);
6264 points[1].x=(double) (cosine*end.x/radii.x+sine*end.y/radii.x);
6265 points[1].y=(double) (cosine*end.y/radii.y-sine*end.x/radii.y);
6266 alpha=points[1].x-points[0].x;
6267 beta=points[1].y-points[0].y;
6268 if (fabs(alpha*alpha+beta*beta) < MagickEpsilon)
6269 return(TraceLine(primitive_info,start,end));
6270 factor=MagickSafeReciprocal(alpha*alpha+beta*beta)-0.25;
6271 if (factor <= 0.0)
6272 factor=0.0;
6273 else
6274 {
6275 factor=sqrt((double) factor);
6276 if (sweep == large_arc)
6277 factor=(-factor);
6278 }
6279 center.x=(double) ((points[0].x+points[1].x)/2-factor*beta);
6280 center.y=(double) ((points[0].y+points[1].y)/2+factor*alpha);
6281 alpha=atan2(points[0].y-center.y,points[0].x-center.x);
6282 theta=atan2(points[1].y-center.y,points[1].x-center.x)-alpha;
6283 if ((theta < 0.0) && (sweep != MagickFalse))
6284 theta+=2.0*MagickPI;
6285 else
6286 if ((theta > 0.0) && (sweep == MagickFalse))
6287 theta-=2.0*MagickPI;
6288 arc_segments=(size_t) CastDoubleToLong(ceil(fabs((double) (theta/(0.5*
6289 MagickPI+MagickEpsilon)))));
6290 p=primitive_info;
6291 status=MagickTrue;
6292 for (i=0; i < (ssize_t) arc_segments; i++)
6293 {
6294 beta=0.5*((alpha+(i+1)*theta/arc_segments)-(alpha+i*theta/arc_segments));
6295 gamma=(8.0/3.0)*sin(fmod((double) (0.5*beta),DegreesToRadians(360.0)))*
6296 sin(fmod((double) (0.5*beta),DegreesToRadians(360.0)))/
6297 sin(fmod((double) beta,DegreesToRadians(360.0)));
6298 points[0].x=(double) (center.x+cos(fmod((double) (alpha+(double) i*theta/
6299 arc_segments),DegreesToRadians(360.0)))-gamma*sin(fmod((double) (alpha+
6300 (double) i*theta/arc_segments),DegreesToRadians(360.0))));
6301 points[0].y=(double) (center.y+sin(fmod((double) (alpha+(double) i*theta/
6302 arc_segments),DegreesToRadians(360.0)))+gamma*cos(fmod((double) (alpha+
6303 (double) i*theta/arc_segments),DegreesToRadians(360.0))));
6304 points[2].x=(double) (center.x+cos(fmod((double) (alpha+(double) (i+1)*
6305 theta/arc_segments),DegreesToRadians(360.0))));
6306 points[2].y=(double) (center.y+sin(fmod((double) (alpha+(double) (i+1)*
6307 theta/arc_segments),DegreesToRadians(360.0))));
6308 points[1].x=(double) (points[2].x+gamma*sin(fmod((double) (alpha+(double)
6309 (i+1)*theta/arc_segments),DegreesToRadians(360.0))));
6310 points[1].y=(double) (points[2].y-gamma*cos(fmod((double) (alpha+(double)
6311 (i+1)*theta/arc_segments),DegreesToRadians(360.0))));
6312 p->point.x=(p == primitive_info) ? start.x : (p-1)->point.x;
6313 p->point.y=(p == primitive_info) ? start.y : (p-1)->point.y;
6314 (p+1)->point.x=(double) (cosine*radii.x*points[0].x-sine*radii.y*
6315 points[0].y);
6316 (p+1)->point.y=(double) (sine*radii.x*points[0].x+cosine*radii.y*
6317 points[0].y);
6318 (p+2)->point.x=(double) (cosine*radii.x*points[1].x-sine*radii.y*
6319 points[1].y);
6320 (p+2)->point.y=(double) (sine*radii.x*points[1].x+cosine*radii.y*
6321 points[1].y);
6322 (p+3)->point.x=(double) (cosine*radii.x*points[2].x-sine*radii.y*
6323 points[2].y);
6324 (p+3)->point.y=(double) (sine*radii.x*points[2].x+cosine*radii.y*
6325 points[2].y);
6326 if (i == (ssize_t) (arc_segments-1))
6327 (p+3)->point=end;
6328 status&=TraceBezier(mvg_info,4);
6329 if (status == 0)
6330 break;
6331 p=(*mvg_info->primitive_info)+(ptrdiff_t) mvg_info->offset;
6332 mvg_info->offset+=p->coordinates;
6333 p+=(ptrdiff_t) p->coordinates;
6334 }
6335 if (status == 0)
6336 return(MagickFalse);
6337 mvg_info->offset=offset;
6338 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6339 primitive_info->coordinates=(size_t) (p-primitive_info);
6340 primitive_info->closed_subpath=MagickFalse;
6341 for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
6342 {
6343 p->primitive=primitive_info->primitive;
6344 p--;
6345 }
6346 return(MagickTrue);
6347}
6348
6349static MagickBooleanType TraceBezier(MVGInfo *mvg_info,
6350 const size_t number_coordinates)
6351{
6352 double
6353 alpha,
6354 *coefficients,
6355 weight;
6356
6357 PointInfo
6358 end,
6359 point,
6360 *points;
6361
6362 PrimitiveInfo
6363 *primitive_info;
6364
6365 PrimitiveInfo
6366 *p;
6367
6368 ssize_t
6369 i,
6370 j;
6371
6372 size_t
6373 control_points,
6374 quantum;
6375
6376 /*
6377 Allocate coefficients.
6378 */
6379 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6380 quantum=number_coordinates;
6381 for (i=0; i < (ssize_t) number_coordinates; i++)
6382 {
6383 for (j=i+1; j < (ssize_t) number_coordinates; j++)
6384 {
6385 alpha=fabs(primitive_info[j].point.x-primitive_info[i].point.x);
6386 if (alpha > (double) GetMaxMemoryRequest())
6387 {
6388 (void) ThrowMagickException(mvg_info->exception,GetMagickModule(),
6389 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
6390 return(MagickFalse);
6391 }
6392 if (alpha > (double) quantum)
6393 quantum=(size_t) alpha;
6394 alpha=fabs(primitive_info[j].point.y-primitive_info[i].point.y);
6395 if (alpha > (double) quantum)
6396 quantum=(size_t) alpha;
6397 }
6398 }
6399 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6400 quantum=MagickMin(quantum/number_coordinates,BezierQuantum);
6401 if (quantum > (double) GetMaxMemoryRequest())
6402 {
6403 (void) ThrowMagickException(mvg_info->exception,GetMagickModule(),
6404 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
6405 return(MagickFalse);
6406 }
6407 coefficients=(double *) AcquireQuantumMemory(number_coordinates,
6408 sizeof(*coefficients));
6409 points=(PointInfo *) AcquireQuantumMemory(quantum,number_coordinates*
6410 sizeof(*points));
6411 if ((coefficients == (double *) NULL) || (points == (PointInfo *) NULL))
6412 {
6413 if (points != (PointInfo *) NULL)
6414 points=(PointInfo *) RelinquishMagickMemory(points);
6415 if (coefficients != (double *) NULL)
6416 coefficients=(double *) RelinquishMagickMemory(coefficients);
6417 (void) ThrowMagickException(mvg_info->exception,GetMagickModule(),
6418 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
6419 return(MagickFalse);
6420 }
6421 control_points=quantum*number_coordinates;
6422 if (CheckPrimitiveExtent(mvg_info,(double) control_points+1) == MagickFalse)
6423 {
6424 points=(PointInfo *) RelinquishMagickMemory(points);
6425 coefficients=(double *) RelinquishMagickMemory(coefficients);
6426 return(MagickFalse);
6427 }
6428 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6429 /*
6430 Compute bezier points.
6431 */
6432 end=primitive_info[number_coordinates-1].point;
6433 for (i=0; i < (ssize_t) number_coordinates; i++)
6434 coefficients[i]=Permutate((ssize_t) number_coordinates-1,i);
6435 weight=0.0;
6436 for (i=0; i < (ssize_t) control_points; i++)
6437 {
6438 p=primitive_info;
6439 point.x=0.0;
6440 point.y=0.0;
6441 alpha=pow((double) (1.0-weight),(double) number_coordinates-1.0);
6442 for (j=0; j < (ssize_t) number_coordinates; j++)
6443 {
6444 point.x+=alpha*coefficients[j]*p->point.x;
6445 point.y+=alpha*coefficients[j]*p->point.y;
6446 alpha*=weight/(1.0-weight);
6447 p++;
6448 }
6449 points[i]=point;
6450 weight+=1.0/control_points;
6451 }
6452 /*
6453 Bezier curves are just short segmented polys.
6454 */
6455 p=primitive_info;
6456 for (i=0; i < (ssize_t) control_points; i++)
6457 {
6458 if (TracePoint(p,points[i]) == MagickFalse)
6459 {
6460 points=(PointInfo *) RelinquishMagickMemory(points);
6461 coefficients=(double *) RelinquishMagickMemory(coefficients);
6462 return(MagickFalse);
6463 }
6464 p+=(ptrdiff_t) p->coordinates;
6465 }
6466 if (TracePoint(p,end) == MagickFalse)
6467 {
6468 points=(PointInfo *) RelinquishMagickMemory(points);
6469 coefficients=(double *) RelinquishMagickMemory(coefficients);
6470 return(MagickFalse);
6471 }
6472 p+=(ptrdiff_t) p->coordinates;
6473 primitive_info->coordinates=(size_t) (p-primitive_info);
6474 primitive_info->closed_subpath=MagickFalse;
6475 for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
6476 {
6477 p->primitive=primitive_info->primitive;
6478 p--;
6479 }
6480 points=(PointInfo *) RelinquishMagickMemory(points);
6481 coefficients=(double *) RelinquishMagickMemory(coefficients);
6482 return(MagickTrue);
6483}
6484
6485static MagickBooleanType TraceCircle(MVGInfo *mvg_info,const PointInfo start,
6486 const PointInfo end)
6487{
6488 double
6489 alpha,
6490 beta,
6491 radius;
6492
6493 PointInfo
6494 offset,
6495 degrees;
6496
6497 alpha=end.x-start.x;
6498 beta=end.y-start.y;
6499 radius=hypot((double) alpha,(double) beta);
6500 offset.x=(double) radius;
6501 offset.y=(double) radius;
6502 degrees.x=0.0;
6503 degrees.y=360.0;
6504 return(TraceEllipse(mvg_info,start,offset,degrees));
6505}
6506
6507static MagickBooleanType TraceEllipse(MVGInfo *mvg_info,const PointInfo center,
6508 const PointInfo radii,const PointInfo arc)
6509{
6510 double
6511 coordinates,
6512 delta,
6513 step,
6514 x,
6515 y;
6516
6517 PointInfo
6518 angle,
6519 point;
6520
6521 PrimitiveInfo
6522 *primitive_info;
6523
6524 PrimitiveInfo
6525 *p;
6526
6527 ssize_t
6528 i;
6529
6530 /*
6531 Ellipses are just short segmented polys.
6532 */
6533 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6534 primitive_info->coordinates=0;
6535 if ((fabs(radii.x) < MagickEpsilon) || (fabs(radii.y) < MagickEpsilon))
6536 return(MagickTrue);
6537 delta=MagickSafeReciprocal(MagickMax(radii.x,radii.y));
6538 step=MagickPI/(MagickPI*MagickSafeReciprocal(delta))/8.0;
6539 angle.x=DegreesToRadians(arc.x);
6540 y=arc.y;
6541 while (y < arc.x)
6542 y+=360.0;
6543 angle.y=DegreesToRadians(y);
6544 coordinates=ceil((angle.y-angle.x)/step+1.0);
6545 if (CheckPrimitiveExtent(mvg_info,coordinates+1) == MagickFalse)
6546 return(MagickFalse);
6547 i=0;
6548 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6549 for (p=primitive_info; angle.x < angle.y; angle.x+=step)
6550 {
6551 point.x=cos(fmod(angle.x,DegreesToRadians(360.0)))*radii.x+center.x;
6552 point.y=sin(fmod(angle.x,DegreesToRadians(360.0)))*radii.y+center.y;
6553 if (i++ >= (ssize_t) coordinates)
6554 break;
6555 if (TracePoint(p,point) == MagickFalse)
6556 return(MagickFalse);
6557 p+=(ptrdiff_t) p->coordinates;
6558 }
6559 point.x=cos(fmod(angle.y,DegreesToRadians(360.0)))*radii.x+center.x;
6560 point.y=sin(fmod(angle.y,DegreesToRadians(360.0)))*radii.y+center.y;
6561 if (TracePoint(p,point) == MagickFalse)
6562 return(MagickFalse);
6563 p+=(ptrdiff_t) p->coordinates;
6564 primitive_info->coordinates=(size_t) (p-primitive_info);
6565 primitive_info->closed_subpath=MagickFalse;
6566 x=fabs(primitive_info[0].point.x-
6567 primitive_info[primitive_info->coordinates-1].point.x);
6568 y=fabs(primitive_info[0].point.y-
6569 primitive_info[primitive_info->coordinates-1].point.y);
6570 if ((x < MagickEpsilon) && (y < MagickEpsilon))
6571 primitive_info->closed_subpath=MagickTrue;
6572 for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
6573 {
6574 p->primitive=primitive_info->primitive;
6575 p--;
6576 }
6577 return(MagickTrue);
6578}
6579
6580static MagickBooleanType TraceLine(PrimitiveInfo *primitive_info,
6581 const PointInfo start,const PointInfo end)
6582{
6583 if (TracePoint(primitive_info,start) == MagickFalse)
6584 return(MagickFalse);
6585 if (TracePoint(primitive_info+1,end) == MagickFalse)
6586 return(MagickFalse);
6587 (primitive_info+1)->primitive=primitive_info->primitive;
6588 primitive_info->coordinates=2;
6589 primitive_info->closed_subpath=MagickFalse;
6590 return(MagickTrue);
6591}
6592
6593static ssize_t TracePath(Image *image,MVGInfo *mvg_info,const char *path)
6594{
6595 char
6596 *next_token,
6597 token[MaxTextExtent] = "";
6598
6599 const char
6600 *p;
6601
6602 double
6603 x,
6604 y;
6605
6606 int
6607 attribute,
6608 last_attribute;
6609
6610 MagickStatusType
6611 status;
6612
6613 PointInfo
6614 end = {0.0, 0.0},
6615 points[4] = { {0.0, 0.0}, {0.0, 0.0}, {0.0, 0.0}, {0.0, 0.0} },
6616 point = {0.0, 0.0},
6617 start = {0.0, 0.0};
6618
6619 PrimitiveInfo
6620 *primitive_info;
6621
6622 PrimitiveType
6623 primitive_type;
6624
6625 PrimitiveInfo
6626 *q;
6627
6628 ssize_t
6629 i;
6630
6631 size_t
6632 number_coordinates,
6633 z_count;
6634
6635 ssize_t
6636 subpath_offset;
6637
6638 subpath_offset=mvg_info->offset;
6639 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6640 status=MagickTrue;
6641 attribute=0;
6642 number_coordinates=0;
6643 z_count=0;
6644 *token='\0';
6645 primitive_type=primitive_info->primitive;
6646 q=primitive_info;
6647 for (p=path; *p != '\0'; )
6648 {
6649 if (status == MagickFalse)
6650 break;
6651 while (isspace((int) ((unsigned char) *p)) != 0)
6652 p++;
6653 if (*p == '\0')
6654 break;
6655 last_attribute=attribute;
6656 attribute=(int) (*p++);
6657 switch (attribute)
6658 {
6659 case 'a':
6660 case 'A':
6661 {
6662 double
6663 angle = 0.0;
6664
6665 MagickBooleanType
6666 large_arc = MagickFalse,
6667 sweep = MagickFalse;
6668
6669 PointInfo
6670 arc = {0.0, 0.0};
6671
6672 /*
6673 Elliptical arc.
6674 */
6675 do
6676 {
6677 (void) GetNextToken(p,&p,MaxTextExtent,token);
6678 if (IsValidListChar((int) ((unsigned char) *token)) == MagickFalse)
6679 ThrowPointExpectedException(image,token);
6680 if (*token == ',')
6681 (void) GetNextToken(p,&p,MaxTextExtent,token);
6682 arc.x=GetDrawValue(token,&next_token);
6683 if (token == next_token)
6684 ThrowPointExpectedException(image,token);
6685 (void) GetNextToken(p,&p,MaxTextExtent,token);
6686 if (IsValidListChar((int) ((unsigned char) *token)) == MagickFalse)
6687 ThrowPointExpectedException(image,token);
6688 if (*token == ',')
6689 (void) GetNextToken(p,&p,MaxTextExtent,token);
6690 arc.y=GetDrawValue(token,&next_token);
6691 if (token == next_token)
6692 ThrowPointExpectedException(image,token);
6693 (void) GetNextToken(p,&p,MaxTextExtent,token);
6694 if (IsValidListChar((int) ((unsigned char) *token)) == MagickFalse)
6695 ThrowPointExpectedException(image,token);
6696 if (*token == ',')
6697 (void) GetNextToken(p,&p,MaxTextExtent,token);
6698 angle=GetDrawValue(token,&next_token);
6699 if (token == next_token)
6700 ThrowPointExpectedException(image,token);
6701 (void) GetNextToken(p,&p,MaxTextExtent,token);
6702 if (IsValidListChar((int) ((unsigned char) *token)) == MagickFalse)
6703 ThrowPointExpectedException(image,token);
6704 if (*token == ',')
6705 (void) GetNextToken(p,&p,MaxTextExtent,token);
6706 large_arc=StringToLong(token) != 0 ? MagickTrue : MagickFalse;
6707 (void) GetNextToken(p,&p,MaxTextExtent,token);
6708 if (IsValidListChar((int) ((unsigned char) *token)) == MagickFalse)
6709 ThrowPointExpectedException(image,token);
6710 if (*token == ',')
6711 (void) GetNextToken(p,&p,MaxTextExtent,token);
6712 sweep=StringToLong(token) != 0 ? MagickTrue : MagickFalse;
6713 if (IsValidListChar((int) ((unsigned char) *token)) == MagickFalse)
6714 ThrowPointExpectedException(image,token);
6715 if (*token == ',')
6716 (void) GetNextToken(p,&p,MaxTextExtent,token);
6717 (void) GetNextToken(p,&p,MaxTextExtent,token);
6718 if (IsValidListChar((int) ((unsigned char) *token)) == MagickFalse)
6719 ThrowPointExpectedException(image,token);
6720 if (*token == ',')
6721 (void) GetNextToken(p,&p,MaxTextExtent,token);
6722 x=GetDrawValue(token,&next_token);
6723 if (token == next_token)
6724 ThrowPointExpectedException(image,token);
6725 (void) GetNextToken(p,&p,MaxTextExtent,token);
6726 if (IsValidListChar((int) ((unsigned char) *token)) == MagickFalse)
6727 ThrowPointExpectedException(image,token);
6728 if (*token == ',')
6729 (void) GetNextToken(p,&p,MaxTextExtent,token);
6730 y=GetDrawValue(token,&next_token);
6731 if (token == next_token)
6732 ThrowPointExpectedException(image,token);
6733 end.x=(double) (attribute == (int) 'A' ? x : point.x+x);
6734 end.y=(double) (attribute == (int) 'A' ? y : point.y+y);
6735 status&=TraceArcPath(mvg_info,point,end,arc,angle,large_arc,sweep);
6736 q=(*mvg_info->primitive_info)+mvg_info->offset;
6737 mvg_info->offset+=q->coordinates;
6738 q+=(ptrdiff_t) q->coordinates;
6739 point=end;
6740 while (isspace((int) ((unsigned char) *p)) != 0)
6741 p++;
6742 if (*p == ',')
6743 p++;
6744 } while (IsValidPoint(p) != MagickFalse);
6745 break;
6746 }
6747 case 'c':
6748 case 'C':
6749 {
6750 /*
6751 Cubic Bézier curve.
6752 */
6753 do
6754 {
6755 points[0]=point;
6756 for (i=1; i < 4; i++)
6757 {
6758 (void) GetNextToken(p,&p,MaxTextExtent,token);
6759 if (IsValidListChar((int) ((unsigned char) *token)) == MagickFalse)
6760 ThrowPointExpectedException(image,token);
6761 if (*token == ',')
6762 (void) GetNextToken(p,&p,MaxTextExtent,token);
6763 x=GetDrawValue(token,&next_token);
6764 if (token == next_token)
6765 ThrowPointExpectedException(image,token);
6766 (void) GetNextToken(p,&p,MaxTextExtent,token);
6767 if (IsValidListChar((int) ((unsigned char) *token)) == MagickFalse)
6768 ThrowPointExpectedException(image,token);
6769 if (*token == ',')
6770 (void) GetNextToken(p,&p,MaxTextExtent,token);
6771 y=GetDrawValue(token,&next_token);
6772 if (token == next_token)
6773 ThrowPointExpectedException(image,token);
6774 end.x=(double) (attribute == (int) 'C' ? x : point.x+x);
6775 end.y=(double) (attribute == (int) 'C' ? y : point.y+y);
6776 points[i]=end;
6777 }
6778 for (i=0; i < 4; i++)
6779 (q+i)->point=points[i];
6780 if (TraceBezier(mvg_info,4) == MagickFalse)
6781 return(-1);
6782 q=(*mvg_info->primitive_info)+mvg_info->offset;
6783 mvg_info->offset+=q->coordinates;
6784 q+=(ptrdiff_t) q->coordinates;
6785 point=end;
6786 while (isspace((int) ((unsigned char) *p)) != 0)
6787 p++;
6788 if (*p == ',')
6789 p++;
6790 } while (IsValidPoint(p) != MagickFalse);
6791 break;
6792 }
6793 case 'H':
6794 case 'h':
6795 {
6796 do
6797 {
6798 (void) GetNextToken(p,&p,MaxTextExtent,token);
6799 if (IsValidListChar((int) ((unsigned char) *token)) == MagickFalse)
6800 ThrowPointExpectedException(image,token);
6801 if (*token == ',')
6802 (void) GetNextToken(p,&p,MaxTextExtent,token);
6803 x=GetDrawValue(token,&next_token);
6804 if (token == next_token)
6805 ThrowPointExpectedException(image,token);
6806 point.x=(double) (attribute == (int) 'H' ? x: point.x+x);
6807 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6808 return(-1);
6809 q=(*mvg_info->primitive_info)+mvg_info->offset;
6810 if (TracePoint(q,point) == MagickFalse)
6811 return(-1);
6812 mvg_info->offset+=q->coordinates;
6813 q+=(ptrdiff_t) q->coordinates;
6814 while (isspace((int) ((unsigned char) *p)) != 0)
6815 p++;
6816 if (*p == ',')
6817 p++;
6818 } while (IsValidPoint(p) != MagickFalse);
6819 break;
6820 }
6821 case 'l':
6822 case 'L':
6823 {
6824 /*
6825 Line to.
6826 */
6827 do
6828 {
6829 (void) GetNextToken(p,&p,MaxTextExtent,token);
6830 if (IsValidListChar((int) ((unsigned char) *token)) == MagickFalse)
6831 ThrowPointExpectedException(image,token);
6832 if (*token == ',')
6833 (void) GetNextToken(p,&p,MaxTextExtent,token);
6834 x=GetDrawValue(token,&next_token);
6835 if (token == next_token)
6836 ThrowPointExpectedException(image,token);
6837 (void) GetNextToken(p,&p,MaxTextExtent,token);
6838 if (IsValidListChar((int) ((unsigned char) *token)) == MagickFalse)
6839 ThrowPointExpectedException(image,token);
6840 if (*token == ',')
6841 (void) GetNextToken(p,&p,MaxTextExtent,token);
6842 y=GetDrawValue(token,&next_token);
6843 if (token == next_token)
6844 ThrowPointExpectedException(image,token);
6845 point.x=(double) (attribute == (int) 'L' ? x : point.x+x);
6846 point.y=(double) (attribute == (int) 'L' ? y : point.y+y);
6847 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6848 return(-1);
6849 q=(*mvg_info->primitive_info)+mvg_info->offset;
6850 if (TracePoint(q,point) == MagickFalse)
6851 return(-1);
6852 mvg_info->offset+=q->coordinates;
6853 q+=(ptrdiff_t) q->coordinates;
6854 while (isspace((int) ((unsigned char) *p)) != 0)
6855 p++;
6856 if (*p == ',')
6857 p++;
6858 } while (IsValidPoint(p) != MagickFalse);
6859 break;
6860 }
6861 case 'M':
6862 case 'm':
6863 {
6864 /*
6865 Move to.
6866 */
6867 if (mvg_info->offset != subpath_offset)
6868 {
6869 primitive_info=(*mvg_info->primitive_info)+subpath_offset;
6870 primitive_info->coordinates=(size_t) (q-primitive_info);
6871 number_coordinates+=primitive_info->coordinates;
6872 primitive_info=q;
6873 subpath_offset=mvg_info->offset;
6874 }
6875 i=0;
6876 do
6877 {
6878 (void) GetNextToken(p,&p,MaxTextExtent,token);
6879 if (IsValidListChar((int) ((unsigned char) *token)) == MagickFalse)
6880 ThrowPointExpectedException(image,token);
6881 if (*token == ',')
6882 (void) GetNextToken(p,&p,MaxTextExtent,token);
6883 x=GetDrawValue(token,&next_token);
6884 if (token == next_token)
6885 ThrowPointExpectedException(image,token);
6886 (void) GetNextToken(p,&p,MaxTextExtent,token);
6887 if (IsValidListChar((int) ((unsigned char) *token)) == MagickFalse)
6888 ThrowPointExpectedException(image,token);
6889 if (*token == ',')
6890 (void) GetNextToken(p,&p,MaxTextExtent,token);
6891 y=GetDrawValue(token,&next_token);
6892 if (token == next_token)
6893 ThrowPointExpectedException(image,token);
6894 point.x=(double) (attribute == (int) 'M' ? x : point.x+x);
6895 point.y=(double) (attribute == (int) 'M' ? y : point.y+y);
6896 if (i == 0)
6897 start=point;
6898 i++;
6899 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6900 return(-1);
6901 q=(*mvg_info->primitive_info)+mvg_info->offset;
6902 if (TracePoint(q,point) == MagickFalse)
6903 return(-1);
6904 mvg_info->offset+=q->coordinates;
6905 q+=(ptrdiff_t) q->coordinates;
6906 while (isspace((int) ((unsigned char) *p)) != 0)
6907 p++;
6908 if (*p == ',')
6909 p++;
6910 } while (IsValidPoint(p) != MagickFalse);
6911 break;
6912 }
6913 case 'q':
6914 case 'Q':
6915 {
6916 /*
6917 Quadratic Bézier curve.
6918 */
6919 do
6920 {
6921 points[0]=point;
6922 for (i=1; i < 3; i++)
6923 {
6924 (void) GetNextToken(p,&p,MaxTextExtent,token);
6925 if (IsValidListChar((int) ((unsigned char) *token)) == MagickFalse)
6926 ThrowPointExpectedException(image,token);
6927 if (*token == ',')
6928 (void) GetNextToken(p,&p,MaxTextExtent,token);
6929 x=GetDrawValue(token,&next_token);
6930 if (token == next_token)
6931 ThrowPointExpectedException(image,token);
6932 (void) GetNextToken(p,&p,MaxTextExtent,token);
6933 if (IsValidListChar((int) ((unsigned char) *token)) == MagickFalse)
6934 ThrowPointExpectedException(image,token);
6935 if (*token == ',')
6936 (void) GetNextToken(p,&p,MaxTextExtent,token);
6937 y=GetDrawValue(token,&next_token);
6938 if (token == next_token)
6939 ThrowPointExpectedException(image,token);
6940 if (*p == ',')
6941 p++;
6942 end.x=(double) (attribute == (int) 'Q' ? x : point.x+x);
6943 end.y=(double) (attribute == (int) 'Q' ? y : point.y+y);
6944 points[i]=end;
6945 }
6946 for (i=0; i < 3; i++)
6947 (q+i)->point=points[i];
6948 if (TraceBezier(mvg_info,3) == MagickFalse)
6949 return(-1);
6950 q=(*mvg_info->primitive_info)+mvg_info->offset;
6951 mvg_info->offset+=q->coordinates;
6952 q+=(ptrdiff_t) q->coordinates;
6953 point=end;
6954 while (isspace((int) ((unsigned char) *p)) != 0)
6955 p++;
6956 if (*p == ',')
6957 p++;
6958 } while (IsValidPoint(p) != MagickFalse);
6959 break;
6960 }
6961 case 's':
6962 case 'S':
6963 {
6964 /*
6965 Cubic Bézier curve.
6966 */
6967 do
6968 {
6969 points[0]=points[3];
6970 points[1].x=2.0*points[3].x-points[2].x;
6971 points[1].y=2.0*points[3].y-points[2].y;
6972 for (i=2; i < 4; i++)
6973 {
6974 (void) GetNextToken(p,&p,MaxTextExtent,token);
6975 if (IsValidListChar((int) ((unsigned char) *token)) == MagickFalse)
6976 ThrowPointExpectedException(image,token);
6977 if (*token == ',')
6978 (void) GetNextToken(p,&p,MaxTextExtent,token);
6979 x=GetDrawValue(token,&next_token);
6980 if (token == next_token)
6981 ThrowPointExpectedException(image,token);
6982 (void) GetNextToken(p,&p,MaxTextExtent,token);
6983 if (IsValidListChar((int) ((unsigned char) *token)) == MagickFalse)
6984 ThrowPointExpectedException(image,token);
6985 if (*token == ',')
6986 (void) GetNextToken(p,&p,MaxTextExtent,token);
6987 y=GetDrawValue(token,&next_token);
6988 if (token == next_token)
6989 ThrowPointExpectedException(image,token);
6990 if (*p == ',')
6991 p++;
6992 end.x=(double) (attribute == (int) 'S' ? x : point.x+x);
6993 end.y=(double) (attribute == (int) 'S' ? y : point.y+y);
6994 points[i]=end;
6995 }
6996 if (strchr("CcSs",last_attribute) == (char *) NULL)
6997 {
6998 points[0]=point;
6999 points[1]=point;
7000 }
7001 for (i=0; i < 4; i++)
7002 (q+i)->point=points[i];
7003 if (TraceBezier(mvg_info,4) == MagickFalse)
7004 return(-1);
7005 q=(*mvg_info->primitive_info)+mvg_info->offset;
7006 mvg_info->offset+=q->coordinates;
7007 q+=(ptrdiff_t) q->coordinates;
7008 point=end;
7009 last_attribute=attribute;
7010 while (isspace((int) ((unsigned char) *p)) != 0)
7011 p++;
7012 if (*p == ',')
7013 p++;
7014 } while (IsValidPoint(p) != MagickFalse);
7015 break;
7016 }
7017 case 't':
7018 case 'T':
7019 {
7020 /*
7021 Quadratic Bézier curve.
7022 */
7023 do
7024 {
7025 points[0]=points[2];
7026 points[1].x=2.0*points[2].x-points[1].x;
7027 points[1].y=2.0*points[2].y-points[1].y;
7028 for (i=2; i < 3; i++)
7029 {
7030 (void) GetNextToken(p,&p,MaxTextExtent,token);
7031 if (IsValidListChar((int) ((unsigned char) *token)) == MagickFalse)
7032 ThrowPointExpectedException(image,token);
7033 if (*token == ',')
7034 (void) GetNextToken(p,&p,MaxTextExtent,token);
7035 x=GetDrawValue(token,&next_token);
7036 if (token == next_token)
7037 ThrowPointExpectedException(image,token);
7038 (void) GetNextToken(p,&p,MaxTextExtent,token);
7039 if (IsValidListChar((int) ((unsigned char) *token)) == MagickFalse)
7040 ThrowPointExpectedException(image,token);
7041 if (*token == ',')
7042 (void) GetNextToken(p,&p,MaxTextExtent,token);
7043 y=GetDrawValue(token,&next_token);
7044 if (token == next_token)
7045 ThrowPointExpectedException(image,token);
7046 end.x=(double) (attribute == (int) 'T' ? x : point.x+x);
7047 end.y=(double) (attribute == (int) 'T' ? y : point.y+y);
7048 points[i]=end;
7049 }
7050 if (status == MagickFalse)
7051 break;
7052 if (strchr("QqTt",last_attribute) == (char *) NULL)
7053 {
7054 points[0]=point;
7055 points[1]=point;
7056 }
7057 for (i=0; i < 3; i++)
7058 (q+i)->point=points[i];
7059 if (TraceBezier(mvg_info,3) == MagickFalse)
7060 return(-1);
7061 q=(*mvg_info->primitive_info)+mvg_info->offset;
7062 mvg_info->offset+=q->coordinates;
7063 q+=(ptrdiff_t) q->coordinates;
7064 point=end;
7065 last_attribute=attribute;
7066 while (isspace((int) ((unsigned char) *p)) != 0)
7067 p++;
7068 if (*p == ',')
7069 p++;
7070 } while (IsValidPoint(p) != MagickFalse);
7071 break;
7072 }
7073 case 'v':
7074 case 'V':
7075 {
7076 /*
7077 Line to.
7078 */
7079 do
7080 {
7081 (void) GetNextToken(p,&p,MaxTextExtent,token);
7082 if (IsValidListChar((int) ((unsigned char) *token)) == MagickFalse)
7083 ThrowPointExpectedException(image,token);
7084 if (*token == ',')
7085 (void) GetNextToken(p,&p,MaxTextExtent,token);
7086 y=GetDrawValue(token,&next_token);
7087 if (token == next_token)
7088 ThrowPointExpectedException(image,token);
7089 point.y=(double) (attribute == (int) 'V' ? y : point.y+y);
7090 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
7091 return(-1);
7092 q=(*mvg_info->primitive_info)+mvg_info->offset;
7093 if (TracePoint(q,point) == MagickFalse)
7094 return(-1);
7095 mvg_info->offset+=q->coordinates;
7096 q+=(ptrdiff_t) q->coordinates;
7097 while (isspace((int) ((unsigned char) *p)) != 0)
7098 p++;
7099 if (*p == ',')
7100 p++;
7101 } while (IsValidPoint(p) != MagickFalse);
7102 break;
7103 }
7104 case 'z':
7105 case 'Z':
7106 {
7107 /*
7108 Close path.
7109 */
7110 point=start;
7111 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
7112 return(-1);
7113 q=(*mvg_info->primitive_info)+mvg_info->offset;
7114 if (TracePoint(q,point) == MagickFalse)
7115 return(-1);
7116 mvg_info->offset+=q->coordinates;
7117 q+=(ptrdiff_t) q->coordinates;
7118 primitive_info=(*mvg_info->primitive_info)+subpath_offset;
7119 primitive_info->coordinates=(size_t) (q-primitive_info);
7120 primitive_info->closed_subpath=MagickTrue;
7121 number_coordinates+=primitive_info->coordinates;
7122 primitive_info=q;
7123 subpath_offset=mvg_info->offset;
7124 z_count++;
7125 break;
7126 }
7127 default:
7128 {
7129 ThrowPointExpectedException(image,token);
7130 break;
7131 }
7132 }
7133 }
7134 if (status == MagickFalse)
7135 return(-1);
7136 primitive_info=(*mvg_info->primitive_info)+subpath_offset;
7137 primitive_info->coordinates=(size_t) (q-primitive_info);
7138 number_coordinates+=primitive_info->coordinates;
7139 for (i=0; i < (ssize_t) number_coordinates; i++)
7140 {
7141 q--;
7142 q->primitive=primitive_type;
7143 if (z_count > 1)
7144 q->method=FillToBorderMethod;
7145 }
7146 q=primitive_info;
7147 return((ssize_t) number_coordinates);
7148}
7149
7150static MagickBooleanType TraceRectangle(PrimitiveInfo *primitive_info,
7151 const PointInfo start,const PointInfo end)
7152{
7153 PointInfo
7154 point;
7155
7156 PrimitiveInfo
7157 *p;
7158
7159 ssize_t
7160 i;
7161
7162 p=primitive_info;
7163 if (TracePoint(p,start) == MagickFalse)
7164 return(MagickFalse);
7165 p+=(ptrdiff_t) p->coordinates;
7166 point.x=start.x;
7167 point.y=end.y;
7168 if (TracePoint(p,point) == MagickFalse)
7169 return(MagickFalse);
7170 p+=(ptrdiff_t) p->coordinates;
7171 if (TracePoint(p,end) == MagickFalse)
7172 return(MagickFalse);
7173 p+=(ptrdiff_t) p->coordinates;
7174 point.x=end.x;
7175 point.y=start.y;
7176 if (TracePoint(p,point) == MagickFalse)
7177 return(MagickFalse);
7178 p+=(ptrdiff_t) p->coordinates;
7179 if (TracePoint(p,start) == MagickFalse)
7180 return(MagickFalse);
7181 p+=(ptrdiff_t) p->coordinates;
7182 primitive_info->coordinates=(size_t) (p-primitive_info);
7183 primitive_info->closed_subpath=MagickTrue;
7184 for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
7185 {
7186 p->primitive=primitive_info->primitive;
7187 p--;
7188 }
7189 return(MagickTrue);
7190}
7191
7192static MagickBooleanType TraceRoundRectangle(MVGInfo *mvg_info,
7193 const PointInfo start,const PointInfo end,PointInfo arc)
7194{
7195 PointInfo
7196 degrees,
7197 point,
7198 segment;
7199
7200 PrimitiveInfo
7201 *primitive_info;
7202
7203 PrimitiveInfo
7204 *p;
7205
7206 ssize_t
7207 i;
7208
7209 ssize_t
7210 offset;
7211
7212 offset=mvg_info->offset;
7213 segment.x=fabs(end.x-start.x);
7214 segment.y=fabs(end.y-start.y);
7215 if ((segment.x < MagickEpsilon) || (segment.y < MagickEpsilon))
7216 {
7217 (*mvg_info->primitive_info+mvg_info->offset)->coordinates=0;
7218 return(MagickTrue);
7219 }
7220 if (arc.x > (0.5*segment.x))
7221 arc.x=0.5*segment.x;
7222 if (arc.y > (0.5*segment.y))
7223 arc.y=0.5*segment.y;
7224 point.x=start.x+segment.x-arc.x;
7225 point.y=start.y+arc.y;
7226 degrees.x=270.0;
7227 degrees.y=360.0;
7228 if (TraceEllipse(mvg_info,point,arc,degrees) == MagickFalse)
7229 return(MagickFalse);
7230 p=(*mvg_info->primitive_info)+(ptrdiff_t) mvg_info->offset;
7231 mvg_info->offset+=p->coordinates;
7232 point.x=start.x+segment.x-arc.x;
7233 point.y=start.y+segment.y-arc.y;
7234 degrees.x=0.0;
7235 degrees.y=90.0;
7236 if (TraceEllipse(mvg_info,point,arc,degrees) == MagickFalse)
7237 return(MagickFalse);
7238 p=(*mvg_info->primitive_info)+(ptrdiff_t) mvg_info->offset;
7239 mvg_info->offset+=p->coordinates;
7240 point.x=start.x+arc.x;
7241 point.y=start.y+segment.y-arc.y;
7242 degrees.x=90.0;
7243 degrees.y=180.0;
7244 if (TraceEllipse(mvg_info,point,arc,degrees) == MagickFalse)
7245 return(MagickFalse);
7246 p=(*mvg_info->primitive_info)+(ptrdiff_t) mvg_info->offset;
7247 mvg_info->offset+=p->coordinates;
7248 point.x=start.x+arc.x;
7249 point.y=start.y+arc.y;
7250 degrees.x=180.0;
7251 degrees.y=270.0;
7252 if (TraceEllipse(mvg_info,point,arc,degrees) == MagickFalse)
7253 return(MagickFalse);
7254 p=(*mvg_info->primitive_info)+(ptrdiff_t) mvg_info->offset;
7255 mvg_info->offset+=p->coordinates;
7256 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
7257 return(MagickFalse);
7258 p=(*mvg_info->primitive_info)+(ptrdiff_t) mvg_info->offset;
7259 if (TracePoint(p,(*mvg_info->primitive_info+offset)->point) == MagickFalse)
7260 return(MagickFalse);
7261 p+=(ptrdiff_t) p->coordinates;
7262 mvg_info->offset=offset;
7263 primitive_info=(*mvg_info->primitive_info)+offset;
7264 primitive_info->coordinates=(size_t) (p-primitive_info);
7265 primitive_info->closed_subpath=MagickTrue;
7266 for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
7267 {
7268 p->primitive=primitive_info->primitive;
7269 p--;
7270 }
7271 return(MagickTrue);
7272}
7273
7274static MagickBooleanType TraceSquareLinecap(PrimitiveInfo *primitive_info,
7275 const size_t number_vertices,const double offset)
7276{
7277 double
7278 distance;
7279
7280 double
7281 dx,
7282 dy;
7283
7284 ssize_t
7285 i;
7286
7287 ssize_t
7288 j;
7289
7290 dx=0.0;
7291 dy=0.0;
7292 for (i=1; i < (ssize_t) number_vertices; i++)
7293 {
7294 dx=primitive_info[0].point.x-primitive_info[i].point.x;
7295 dy=primitive_info[0].point.y-primitive_info[i].point.y;
7296 if ((fabs((double) dx) >= MagickEpsilon) ||
7297 (fabs((double) dy) >= MagickEpsilon))
7298 break;
7299 }
7300 if (i == (ssize_t) number_vertices)
7301 i=(ssize_t) number_vertices-1L;
7302 distance=hypot((double) dx,(double) dy);
7303 primitive_info[0].point.x=(double) (primitive_info[i].point.x+
7304 dx*(distance+offset)/distance);
7305 primitive_info[0].point.y=(double) (primitive_info[i].point.y+
7306 dy*(distance+offset)/distance);
7307 for (j=(ssize_t) number_vertices-2; j >= 0; j--)
7308 {
7309 dx=primitive_info[number_vertices-1].point.x-primitive_info[j].point.x;
7310 dy=primitive_info[number_vertices-1].point.y-primitive_info[j].point.y;
7311 if ((fabs((double) dx) >= MagickEpsilon) ||
7312 (fabs((double) dy) >= MagickEpsilon))
7313 break;
7314 }
7315 distance=hypot((double) dx,(double) dy);
7316 primitive_info[number_vertices-1].point.x=(double) (primitive_info[j].point.x+
7317 dx*(distance+offset)/distance);
7318 primitive_info[number_vertices-1].point.y=(double) (primitive_info[j].point.y+
7319 dy*(distance+offset)/distance);
7320 return(MagickTrue);
7321}
7322
7323static PrimitiveInfo *TraceStrokePolygon(const DrawInfo *draw_info,
7324 const PrimitiveInfo *primitive_info,ExceptionInfo *exception)
7325{
7326#define MaxStrokePad (6*BezierQuantum+360)
7327#define CheckPathExtent(pad_p,pad_q) \
7328{ \
7329 if ((pad_p) > MaxBezierCoordinates) \
7330 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p); \
7331 else \
7332 if ((ssize_t) (p+(pad_p)) >= (ssize_t) extent_p) \
7333 { \
7334 if (~extent_p < (pad_p)) \
7335 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p); \
7336 else \
7337 { \
7338 extent_p+=(pad_p); \
7339 stroke_p=(PointInfo *) ResizeQuantumMemory(stroke_p,extent_p+ \
7340 MaxStrokePad,sizeof(*stroke_p)); \
7341 } \
7342 } \
7343 if ((pad_q) > MaxBezierCoordinates) \
7344 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q); \
7345 else \
7346 if ((ssize_t) (q+(pad_q)) >= (ssize_t) extent_q) \
7347 { \
7348 if (~extent_q < (pad_q)) \
7349 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q); \
7350 else \
7351 { \
7352 extent_q+=(pad_q); \
7353 stroke_q=(PointInfo *) ResizeQuantumMemory(stroke_q,extent_q+ \
7354 MaxStrokePad,sizeof(*stroke_q)); \
7355 } \
7356 } \
7357 if ((stroke_p == (PointInfo *) NULL) || (stroke_q == (PointInfo *) NULL)) \
7358 { \
7359 if (stroke_p != (PointInfo *) NULL) \
7360 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p); \
7361 if (stroke_q != (PointInfo *) NULL) \
7362 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q); \
7363 polygon_primitive=(PrimitiveInfo *) \
7364 RelinquishMagickMemory(polygon_primitive); \
7365 (void) ThrowMagickException(exception,GetMagickModule(), \
7366 ResourceLimitError,"MemoryAllocationFailed","`%s'",""); \
7367 return((PrimitiveInfo *) NULL); \
7368 } \
7369}
7370
7371 typedef struct _StrokeSegment
7372 {
7373 double
7374 p,
7375 q;
7376 } StrokeSegment;
7377
7378 double
7379 delta_theta,
7380 dot_product,
7381 mid,
7382 miterlimit;
7383
7384 MagickBooleanType
7385 closed_path;
7386
7387 PointInfo
7388 box_p[5],
7389 box_q[5],
7390 center,
7391 offset,
7392 *stroke_p,
7393 *stroke_q;
7394
7395 PrimitiveInfo
7396 *polygon_primitive,
7397 *stroke_polygon;
7398
7399 ssize_t
7400 i;
7401
7402 size_t
7403 arc_segments,
7404 extent_p,
7405 extent_q,
7406 number_vertices;
7407
7408 ssize_t
7409 j,
7410 n,
7411 p,
7412 q;
7413
7414 StrokeSegment
7415 dx = {0.0, 0.0},
7416 dy = {0.0, 0.0},
7417 inverse_slope = {0.0, 0.0},
7418 slope = {0.0, 0.0},
7419 theta = {0.0, 0.0};
7420
7421 /*
7422 Allocate paths.
7423 */
7424 number_vertices=primitive_info->coordinates;
7425 polygon_primitive=(PrimitiveInfo *) AcquireQuantumMemory((size_t)
7426 number_vertices+2UL,sizeof(*polygon_primitive));
7427 if (polygon_primitive == (PrimitiveInfo *) NULL)
7428 {
7429 (void) ThrowMagickException(exception,GetMagickModule(),
7430 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
7431 return((PrimitiveInfo *) NULL);
7432 }
7433 (void) memcpy(polygon_primitive,primitive_info,(size_t) number_vertices*
7434 sizeof(*polygon_primitive));
7435 offset.x=primitive_info[number_vertices-1].point.x-primitive_info[0].point.x;
7436 offset.y=primitive_info[number_vertices-1].point.y-primitive_info[0].point.y;
7437 closed_path=(fabs(offset.x) < MagickEpsilon) &&
7438 (fabs(offset.y) < MagickEpsilon) ? MagickTrue : MagickFalse;
7439 if ((draw_info->linejoin == MiterJoin) ||
7440 ((draw_info->linejoin == RoundJoin) && (closed_path != MagickFalse)))
7441 {
7442 polygon_primitive[number_vertices]=primitive_info[1];
7443 number_vertices++;
7444 }
7445 polygon_primitive[number_vertices].primitive=UndefinedPrimitive;
7446 /*
7447 Compute the slope for the first line segment, p.
7448 */
7449 closed_path=primitive_info[0].closed_subpath;
7450 dx.p=0.0;
7451 dy.p=0.0;
7452 for (n=1; n < (ssize_t) number_vertices; n++)
7453 {
7454 dx.p=polygon_primitive[n].point.x-polygon_primitive[0].point.x;
7455 dy.p=polygon_primitive[n].point.y-polygon_primitive[0].point.y;
7456 if ((fabs(dx.p) >= MagickEpsilon) || (fabs(dy.p) >= MagickEpsilon))
7457 break;
7458 }
7459 if (n == (ssize_t) number_vertices)
7460 {
7461 if ((draw_info->linecap != RoundCap) || (closed_path != MagickFalse))
7462 {
7463 /*
7464 Zero length subpath.
7465 */
7466 stroke_polygon=(PrimitiveInfo *) AcquireCriticalMemory(
7467 sizeof(*stroke_polygon));
7468 stroke_polygon[0]=polygon_primitive[0];
7469 stroke_polygon[0].coordinates=0;
7470 polygon_primitive=(PrimitiveInfo *) RelinquishMagickMemory(
7471 polygon_primitive);
7472 return(stroke_polygon);
7473 }
7474 n=(ssize_t) number_vertices-1L;
7475 }
7476 extent_p=2*number_vertices;
7477 extent_q=2*number_vertices;
7478 stroke_p=(PointInfo *) AcquireQuantumMemory((size_t) extent_p+MaxStrokePad,
7479 sizeof(*stroke_p));
7480 stroke_q=(PointInfo *) AcquireQuantumMemory((size_t) extent_q+MaxStrokePad,
7481 sizeof(*stroke_q));
7482 if ((stroke_p == (PointInfo *) NULL) || (stroke_q == (PointInfo *) NULL))
7483 {
7484 if (stroke_p != (PointInfo *) NULL)
7485 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p);
7486 if (stroke_q != (PointInfo *) NULL)
7487 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q);
7488 polygon_primitive=(PrimitiveInfo *)
7489 RelinquishMagickMemory(polygon_primitive);
7490 (void) ThrowMagickException(exception,GetMagickModule(),
7491 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
7492 return((PrimitiveInfo *) NULL);
7493 }
7494 slope.p=0.0;
7495 inverse_slope.p=0.0;
7496 if (fabs(dx.p) < MagickEpsilon)
7497 {
7498 if (dx.p >= 0.0)
7499 slope.p=dy.p < 0.0 ? -1.0/MagickEpsilon : 1.0/MagickEpsilon;
7500 else
7501 slope.p=dy.p < 0.0 ? 1.0/MagickEpsilon : -1.0/MagickEpsilon;
7502 }
7503 else
7504 if (fabs(dy.p) < MagickEpsilon)
7505 {
7506 if (dy.p >= 0.0)
7507 inverse_slope.p=dx.p < 0.0 ? -1.0/MagickEpsilon : 1.0/MagickEpsilon;
7508 else
7509 inverse_slope.p=dx.p < 0.0 ? 1.0/MagickEpsilon : -1.0/MagickEpsilon;
7510 }
7511 else
7512 {
7513 slope.p=dy.p/dx.p;
7514 inverse_slope.p=(-1.0*MagickSafeReciprocal(slope.p));
7515 }
7516 mid=ExpandAffine(&draw_info->affine)*draw_info->stroke_width/2.0;
7517 miterlimit=(double) (draw_info->miterlimit*draw_info->miterlimit*mid*mid);
7518 if ((draw_info->linecap == SquareCap) && (closed_path == MagickFalse))
7519 (void) TraceSquareLinecap(polygon_primitive,number_vertices,mid);
7520 offset.x=sqrt((double) (mid*mid/(inverse_slope.p*inverse_slope.p+1.0)));
7521 offset.y=(double) (offset.x*inverse_slope.p);
7522 if ((dy.p*offset.x-dx.p*offset.y) > 0.0)
7523 {
7524 box_p[0].x=polygon_primitive[0].point.x-offset.x;
7525 box_p[0].y=polygon_primitive[0].point.y-offset.x*inverse_slope.p;
7526 box_p[1].x=polygon_primitive[n].point.x-offset.x;
7527 box_p[1].y=polygon_primitive[n].point.y-offset.x*inverse_slope.p;
7528 box_q[0].x=polygon_primitive[0].point.x+offset.x;
7529 box_q[0].y=polygon_primitive[0].point.y+offset.x*inverse_slope.p;
7530 box_q[1].x=polygon_primitive[n].point.x+offset.x;
7531 box_q[1].y=polygon_primitive[n].point.y+offset.x*inverse_slope.p;
7532 }
7533 else
7534 {
7535 box_p[0].x=polygon_primitive[0].point.x+offset.x;
7536 box_p[0].y=polygon_primitive[0].point.y+offset.y;
7537 box_p[1].x=polygon_primitive[n].point.x+offset.x;
7538 box_p[1].y=polygon_primitive[n].point.y+offset.y;
7539 box_q[0].x=polygon_primitive[0].point.x-offset.x;
7540 box_q[0].y=polygon_primitive[0].point.y-offset.y;
7541 box_q[1].x=polygon_primitive[n].point.x-offset.x;
7542 box_q[1].y=polygon_primitive[n].point.y-offset.y;
7543 }
7544 /*
7545 Create strokes for the line join attribute: bevel, miter, round.
7546 */
7547 p=0;
7548 q=0;
7549 stroke_q[p++]=box_q[0];
7550 stroke_p[q++]=box_p[0];
7551 for (i=(ssize_t) n+1; i < (ssize_t) number_vertices; i++)
7552 {
7553 /*
7554 Compute the slope for this line segment, q.
7555 */
7556 dx.q=polygon_primitive[i].point.x-polygon_primitive[n].point.x;
7557 dy.q=polygon_primitive[i].point.y-polygon_primitive[n].point.y;
7558 dot_product=dx.q*dx.q+dy.q*dy.q;
7559 if (dot_product < 0.25)
7560 continue;
7561 slope.q=0.0;
7562 inverse_slope.q=0.0;
7563 if (fabs(dx.q) < MagickEpsilon)
7564 {
7565 if (dx.q >= 0.0)
7566 slope.q=dy.q < 0.0 ? -1.0/MagickEpsilon : 1.0/MagickEpsilon;
7567 else
7568 slope.q=dy.q < 0.0 ? 1.0/MagickEpsilon : -1.0/MagickEpsilon;
7569 }
7570 else
7571 if (fabs(dy.q) < MagickEpsilon)
7572 {
7573 if (dy.q >= 0.0)
7574 inverse_slope.q=dx.q < 0.0 ? -1.0/MagickEpsilon : 1.0/MagickEpsilon;
7575 else
7576 inverse_slope.q=dx.q < 0.0 ? 1.0/MagickEpsilon : -1.0/MagickEpsilon;
7577 }
7578 else
7579 {
7580 slope.q=dy.q/dx.q;
7581 inverse_slope.q=(-1.0*MagickSafeReciprocal(slope.q));
7582 }
7583 offset.x=sqrt((double) (mid*mid/(inverse_slope.q*inverse_slope.q+1.0)));
7584 offset.y=(double) (offset.x*inverse_slope.q);
7585 dot_product=dy.q*offset.x-dx.q*offset.y;
7586 if (dot_product > 0.0)
7587 {
7588 box_p[2].x=polygon_primitive[n].point.x-offset.x;
7589 box_p[2].y=polygon_primitive[n].point.y-offset.y;
7590 box_p[3].x=polygon_primitive[i].point.x-offset.x;
7591 box_p[3].y=polygon_primitive[i].point.y-offset.y;
7592 box_q[2].x=polygon_primitive[n].point.x+offset.x;
7593 box_q[2].y=polygon_primitive[n].point.y+offset.y;
7594 box_q[3].x=polygon_primitive[i].point.x+offset.x;
7595 box_q[3].y=polygon_primitive[i].point.y+offset.y;
7596 }
7597 else
7598 {
7599 box_p[2].x=polygon_primitive[n].point.x+offset.x;
7600 box_p[2].y=polygon_primitive[n].point.y+offset.y;
7601 box_p[3].x=polygon_primitive[i].point.x+offset.x;
7602 box_p[3].y=polygon_primitive[i].point.y+offset.y;
7603 box_q[2].x=polygon_primitive[n].point.x-offset.x;
7604 box_q[2].y=polygon_primitive[n].point.y-offset.y;
7605 box_q[3].x=polygon_primitive[i].point.x-offset.x;
7606 box_q[3].y=polygon_primitive[i].point.y-offset.y;
7607 }
7608 if (fabs((double) (slope.p-slope.q)) < MagickEpsilon)
7609 {
7610 box_p[4]=box_p[1];
7611 box_q[4]=box_q[1];
7612 }
7613 else
7614 {
7615 box_p[4].x=(double) ((slope.p*box_p[0].x-box_p[0].y-slope.q*box_p[3].x+
7616 box_p[3].y)/(slope.p-slope.q));
7617 box_p[4].y=(double) (slope.p*(box_p[4].x-box_p[0].x)+box_p[0].y);
7618 box_q[4].x=(double) ((slope.p*box_q[0].x-box_q[0].y-slope.q*box_q[3].x+
7619 box_q[3].y)/(slope.p-slope.q));
7620 box_q[4].y=(double) (slope.p*(box_q[4].x-box_q[0].x)+box_q[0].y);
7621 }
7622 CheckPathExtent(MaxStrokePad,MaxStrokePad);
7623 dot_product=dx.q*dy.p-dx.p*dy.q;
7624 if (dot_product <= 0.0)
7625 switch (draw_info->linejoin)
7626 {
7627 case BevelJoin:
7628 {
7629 stroke_q[q++]=box_q[1];
7630 stroke_q[q++]=box_q[2];
7631 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7632 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7633 if (dot_product <= miterlimit)
7634 stroke_p[p++]=box_p[4];
7635 else
7636 {
7637 stroke_p[p++]=box_p[1];
7638 stroke_p[p++]=box_p[2];
7639 }
7640 break;
7641 }
7642 case MiterJoin:
7643 {
7644 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7645 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7646 if (dot_product <= miterlimit)
7647 {
7648 stroke_q[q++]=box_q[4];
7649 stroke_p[p++]=box_p[4];
7650 }
7651 else
7652 {
7653 stroke_q[q++]=box_q[1];
7654 stroke_q[q++]=box_q[2];
7655 stroke_p[p++]=box_p[1];
7656 stroke_p[p++]=box_p[2];
7657 }
7658 break;
7659 }
7660 case RoundJoin:
7661 {
7662 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7663 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7664 if (dot_product <= miterlimit)
7665 stroke_p[p++]=box_p[4];
7666 else
7667 {
7668 stroke_p[p++]=box_p[1];
7669 stroke_p[p++]=box_p[2];
7670 }
7671 center=polygon_primitive[n].point;
7672 theta.p=atan2(box_q[1].y-center.y,box_q[1].x-center.x);
7673 theta.q=atan2(box_q[2].y-center.y,box_q[2].x-center.x);
7674 if (theta.q < theta.p)
7675 theta.q+=2.0*MagickPI;
7676 arc_segments=(size_t) CastDoubleToLong(ceil((double) ((theta.q-
7677 theta.p)/(2.0*sqrt(MagickSafeReciprocal(mid))))));
7678 CheckPathExtent(MaxStrokePad,arc_segments+MaxStrokePad);
7679 stroke_q[q].x=box_q[1].x;
7680 stroke_q[q].y=box_q[1].y;
7681 q++;
7682 for (j=1; j < (ssize_t) arc_segments; j++)
7683 {
7684 delta_theta=(double) (j*(theta.q-theta.p)/arc_segments);
7685 stroke_q[q].x=(double) (center.x+mid*cos(fmod((double)
7686 (theta.p+delta_theta),DegreesToRadians(360.0))));
7687 stroke_q[q].y=(double) (center.y+mid*sin(fmod((double)
7688 (theta.p+delta_theta),DegreesToRadians(360.0))));
7689 q++;
7690 }
7691 stroke_q[q++]=box_q[2];
7692 break;
7693 }
7694 default:
7695 break;
7696 }
7697 else
7698 switch (draw_info->linejoin)
7699 {
7700 case BevelJoin:
7701 {
7702 stroke_p[p++]=box_p[1];
7703 stroke_p[p++]=box_p[2];
7704 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7705 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7706 if (dot_product <= miterlimit)
7707 stroke_q[q++]=box_q[4];
7708 else
7709 {
7710 stroke_q[q++]=box_q[1];
7711 stroke_q[q++]=box_q[2];
7712 }
7713 break;
7714 }
7715 case MiterJoin:
7716 {
7717 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7718 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7719 if (dot_product <= miterlimit)
7720 {
7721 stroke_q[q++]=box_q[4];
7722 stroke_p[p++]=box_p[4];
7723 }
7724 else
7725 {
7726 stroke_q[q++]=box_q[1];
7727 stroke_q[q++]=box_q[2];
7728 stroke_p[p++]=box_p[1];
7729 stroke_p[p++]=box_p[2];
7730 }
7731 break;
7732 }
7733 case RoundJoin:
7734 {
7735 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7736 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7737 if (dot_product <= miterlimit)
7738 stroke_q[q++]=box_q[4];
7739 else
7740 {
7741 stroke_q[q++]=box_q[1];
7742 stroke_q[q++]=box_q[2];
7743 }
7744 center=polygon_primitive[n].point;
7745 theta.p=atan2(box_p[1].y-center.y,box_p[1].x-center.x);
7746 theta.q=atan2(box_p[2].y-center.y,box_p[2].x-center.x);
7747 if (theta.p < theta.q)
7748 theta.p+=2.0*MagickPI;
7749 arc_segments=(size_t) CastDoubleToLong(ceil((double) ((theta.p-
7750 theta.q)/(2.0*sqrt((double) (MagickSafeReciprocal(mid)))))));
7751 CheckPathExtent(arc_segments+MaxStrokePad,MaxStrokePad);
7752 stroke_p[p++]=box_p[1];
7753 for (j=1; j < (ssize_t) arc_segments; j++)
7754 {
7755 delta_theta=(double) (j*(theta.q-theta.p)/arc_segments);
7756 stroke_p[p].x=(double) (center.x+mid*cos(fmod((double)
7757 (theta.p+delta_theta),DegreesToRadians(360.0))));
7758 stroke_p[p].y=(double) (center.y+mid*sin(fmod((double)
7759 (theta.p+delta_theta),DegreesToRadians(360.0))));
7760 p++;
7761 }
7762 stroke_p[p++]=box_p[2];
7763 break;
7764 }
7765 default:
7766 break;
7767 }
7768 slope.p=slope.q;
7769 inverse_slope.p=inverse_slope.q;
7770 box_p[0]=box_p[2];
7771 box_p[1]=box_p[3];
7772 box_q[0]=box_q[2];
7773 box_q[1]=box_q[3];
7774 dx.p=dx.q;
7775 dy.p=dy.q;
7776 n=i;
7777 }
7778 stroke_p[p++]=box_p[1];
7779 stroke_q[q++]=box_q[1];
7780 /*
7781 Trace stroked polygon.
7782 */
7783 stroke_polygon=(PrimitiveInfo *) AcquireQuantumMemory((size_t)
7784 (p+q+2UL*closed_path+2UL),sizeof(*stroke_polygon));
7785 if (stroke_polygon == (PrimitiveInfo *) NULL)
7786 {
7787 (void) ThrowMagickException(exception,GetMagickModule(),
7788 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
7789 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p);
7790 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q);
7791 polygon_primitive=(PrimitiveInfo *) RelinquishMagickMemory(
7792 polygon_primitive);
7793 return(stroke_polygon);
7794 }
7795 for (i=0; i < (ssize_t) p; i++)
7796 {
7797 stroke_polygon[i]=polygon_primitive[0];
7798 stroke_polygon[i].point=stroke_p[i];
7799 }
7800 if (closed_path != MagickFalse)
7801 {
7802 stroke_polygon[i]=polygon_primitive[0];
7803 stroke_polygon[i].point=stroke_polygon[0].point;
7804 i++;
7805 }
7806 for ( ; i < (ssize_t) (p+q+closed_path); i++)
7807 {
7808 stroke_polygon[i]=polygon_primitive[0];
7809 stroke_polygon[i].point=stroke_q[p+q+closed_path-(i+1)];
7810 }
7811 if (closed_path != MagickFalse)
7812 {
7813 stroke_polygon[i]=polygon_primitive[0];
7814 stroke_polygon[i].point=stroke_polygon[p+closed_path].point;
7815 i++;
7816 }
7817 stroke_polygon[i]=polygon_primitive[0];
7818 stroke_polygon[i].point=stroke_polygon[0].point;
7819 i++;
7820 stroke_polygon[i].primitive=UndefinedPrimitive;
7821 stroke_polygon[0].coordinates=(size_t) (p+q+2*closed_path+1);
7822 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p);
7823 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q);
7824 polygon_primitive=(PrimitiveInfo *) RelinquishMagickMemory(polygon_primitive);
7825 return(stroke_polygon);
7826}
_EdgeInfo
Definition draw.c:112
_ElementInfo
Definition draw.c:136
_MVGInfo
Definition draw.c:146
_PathInfo
Definition draw.c:182
_PolygonInfo
Definition draw.c:164