MagickCore 6.9.13-48
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,sizeof(PrimitiveInfo));
2281 if (primitive_info == (PrimitiveInfo *) NULL)
2282 {
2283 /*
2284 Leave old buffer intact; report failure.
2285 */
2286 ThrowMagickException(mvg_info->exception, GetMagickModule(),
2287 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
2288 return(MagickFalse);
2289 }
2290 /*
2291 Commit updated buffer.
2292 */
2293 for (i=(ssize_t) *mvg_info->extent; i < (ssize_t) extent; i++)
2294 {
2295 primitive_info[i].primitive=UndefinedPrimitive;
2296 primitive_info[i].text=(char *) NULL;
2297 }
2298 *mvg_info->primitive_info=primitive_info;
2299 *mvg_info->extent=extent;
2300 return(MagickTrue);
2301}
2302
2303static inline double GetDrawValue(const char *magick_restrict string,
2304 char **magick_restrict sentinel)
2305{
2306 char
2307 **magick_restrict q;
2308
2309 double
2310 value;
2311
2312 q=sentinel;
2313 value=InterpretLocaleValue(string,q);
2314 sentinel=q;
2315 return(value);
2316}
2317
2318static int MVGMacroCompare(const void *target,const void *source)
2319{
2320 const char
2321 *p,
2322 *q;
2323
2324 p=(const char *) target;
2325 q=(const char *) source;
2326 return(strcmp(p,q));
2327}
2328
2329static SplayTreeInfo *GetMVGMacros(const char *primitive)
2330{
2331 char
2332 *macro,
2333 *token;
2334
2335 const char
2336 *q;
2337
2338 size_t
2339 extent;
2340
2341 SplayTreeInfo
2342 *macros;
2343
2344 /*
2345 Scan graphic primitives for definitions and classes.
2346 */
2347 if (primitive == (const char *) NULL)
2348 return((SplayTreeInfo *) NULL);
2349 macros=NewSplayTree(MVGMacroCompare,RelinquishMagickMemory,
2350 RelinquishMagickMemory);
2351 macro=AcquireString(primitive);
2352 token=AcquireString(primitive);
2353 extent=strlen(token)+MagickPathExtent;
2354 for (q=primitive; *q != '\0'; )
2355 {
2356 if (GetNextToken(q,&q,extent,token) < 1)
2357 break;
2358 if (*token == '\0')
2359 break;
2360 if (LocaleCompare("push",token) == 0)
2361 {
2362 const char
2363 *end,
2364 *start;
2365
2366 (void) GetNextToken(q,&q,extent,token);
2367 if (*q == '"')
2368 {
2369 char
2370 name[MagickPathExtent];
2371
2372 const char
2373 *p;
2374
2375 ssize_t
2376 n;
2377
2378 /*
2379 Named macro (e.g. push graphic-context "wheel").
2380 */
2381 (void) GetNextToken(q,&q,extent,token);
2382 start=q;
2383 end=q;
2384 (void) CopyMagickString(name,token,MagickPathExtent);
2385 n=1;
2386 for (p=q; *p != '\0'; )
2387 {
2388 if (GetNextToken(p,&p,extent,token) < 1)
2389 break;
2390 if (*token == '\0')
2391 break;
2392 if (LocaleCompare(token,"pop") == 0)
2393 {
2394 end=p-strlen(token)-1;
2395 n--;
2396 }
2397 if (LocaleCompare(token,"push") == 0)
2398 n++;
2399 if ((n == 0) && (end >= start))
2400 {
2401 size_t
2402 length=(size_t) (end-start);
2403
2404 /*
2405 Extract macro.
2406 */
2407 (void) GetNextToken(p,&p,extent,token);
2408 if (length > 0)
2409 {
2410 (void) CopyMagickString(macro,start,length);
2411 (void) AddValueToSplayTree(macros,ConstantString(name),
2412 ConstantString(macro));
2413 }
2414 break;
2415 }
2416 }
2417 }
2418 }
2419 }
2420 token=DestroyString(token);
2421 macro=DestroyString(macro);
2422 return(macros);
2423}
2424
2425static inline MagickBooleanType IsPoint(const char *point)
2426{
2427 char
2428 *p;
2429
2430 double
2431 value;
2432
2433 value=GetDrawValue(point,&p);
2434 return((fabs(value) < MagickEpsilon) && (p == point) ? MagickFalse :
2435 MagickTrue);
2436}
2437
2438static inline MagickBooleanType TracePoint(PrimitiveInfo *primitive_info,
2439 const PointInfo point)
2440{
2441 primitive_info->coordinates=1;
2442 primitive_info->closed_subpath=MagickFalse;
2443 primitive_info->point=point;
2444 return(MagickTrue);
2445}
2446
2447static MagickBooleanType RenderMVGContent(Image *image,
2448 const DrawInfo *draw_info,const size_t depth)
2449{
2450#define RenderImageTag "Render/Image"
2451
2452 AffineMatrix
2453 affine,
2454 current;
2455
2456 char
2457 key[2*MaxTextExtent],
2458 keyword[MaxTextExtent],
2459 geometry[MaxTextExtent],
2460 name[MaxTextExtent],
2461 *next_token,
2462 pattern[MaxTextExtent],
2463 *primitive,
2464 *token;
2465
2466 const char
2467 *p,
2468 *q;
2469
2470 double
2471 angle,
2472 coordinates,
2473 cursor,
2474 factor,
2475 primitive_extent;
2476
2477 DrawInfo
2478 *clone_info,
2479 **graphic_context;
2480
2481 MagickBooleanType
2482 proceed;
2483
2484 MagickStatusType
2485 status;
2486
2487 MVGInfo
2488 mvg_info;
2489
2490 PointInfo
2491 point;
2492
2493 PixelPacket
2494 start_color;
2495
2496 PrimitiveInfo
2497 *primitive_info;
2498
2499 PrimitiveType
2500 primitive_type;
2501
2502 SegmentInfo
2503 bounds;
2504
2505 size_t
2506 extent,
2507 number_points;
2508
2509 SplayTreeInfo
2510 *macros;
2511
2512 ssize_t
2513 defsDepth,
2514 i,
2515 j,
2516 k,
2517 n,
2518 symbolDepth,
2519 x;
2520
2521 TypeMetric
2522 metrics;
2523
2524 assert(image != (Image *) NULL);
2525 assert(image->signature == MagickCoreSignature);
2526 assert(draw_info != (DrawInfo *) NULL);
2527 assert(draw_info->signature == MagickCoreSignature);
2528 if (IsEventLogging() != MagickFalse)
2529 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
2530 if (depth > MagickMaxRecursionDepth)
2531 ThrowBinaryImageException(DrawError,"VectorGraphicsNestedTooDeeply",
2532 image->filename);
2533 if ((draw_info->primitive == (char *) NULL) ||
2534 (*draw_info->primitive == '\0'))
2535 return(MagickFalse);
2536 if (draw_info->debug != MagickFalse)
2537 (void) LogMagickEvent(DrawEvent,GetMagickModule(),"begin draw-image");
2538 if (SetImageStorageClass(image,DirectClass) == MagickFalse)
2539 return(MagickFalse);
2540 if (image->matte == MagickFalse)
2541 {
2542 status=SetImageAlphaChannel(image,OpaqueAlphaChannel);
2543 if (status == MagickFalse)
2544 return(MagickFalse);
2545 }
2546 primitive=(char *) NULL;
2547 if ((*draw_info->primitive == '@') && (strlen(draw_info->primitive) > 1) &&
2548 (*(draw_info->primitive+1) != '-') && (depth == 0))
2549 primitive=FileToString(draw_info->primitive,~0UL,&image->exception);
2550 else
2551 primitive=AcquireString(draw_info->primitive);
2552 if (primitive == (char *) NULL)
2553 return(MagickFalse);
2554 primitive_extent=(double) strlen(primitive);
2555 (void) SetImageArtifact(image,"mvg:vector-graphics",primitive);
2556 n=0;
2557 /*
2558 Allocate primitive info memory.
2559 */
2560 graphic_context=(DrawInfo **) AcquireMagickMemory(sizeof(*graphic_context));
2561 if (graphic_context == (DrawInfo **) NULL)
2562 {
2563 primitive=DestroyString(primitive);
2564 ThrowBinaryImageException(ResourceLimitError,"MemoryAllocationFailed",
2565 image->filename);
2566 }
2567 number_points=(size_t) PrimitiveExtentPad;
2568 primitive_info=(PrimitiveInfo *) AcquireQuantumMemory((size_t)
2569 (number_points+1),sizeof(*primitive_info));
2570 if (primitive_info == (PrimitiveInfo *) NULL)
2571 {
2572 primitive=DestroyString(primitive);
2573 for ( ; n >= 0; n--)
2574 graphic_context[n]=DestroyDrawInfo(graphic_context[n]);
2575 graphic_context=(DrawInfo **) RelinquishMagickMemory(graphic_context);
2576 ThrowBinaryImageException(ResourceLimitError,"MemoryAllocationFailed",
2577 image->filename);
2578 }
2579 (void) memset(primitive_info,0,(size_t) (number_points+1)*
2580 sizeof(*primitive_info));
2581 (void) memset(&mvg_info,0,sizeof(mvg_info));
2582 mvg_info.primitive_info=(&primitive_info);
2583 mvg_info.extent=(&number_points);
2584 mvg_info.exception=(&image->exception);
2585 graphic_context[n]=CloneDrawInfo((ImageInfo *) NULL,draw_info);
2586 graphic_context[n]->viewbox=image->page;
2587 if ((image->page.width == 0) || (image->page.height == 0))
2588 {
2589 graphic_context[n]->viewbox.width=image->columns;
2590 graphic_context[n]->viewbox.height=image->rows;
2591 }
2592 token=AcquireString(primitive);
2593 extent=strlen(token)+MaxTextExtent;
2594 cursor=0.0;
2595 defsDepth=0;
2596 symbolDepth=0;
2597 macros=GetMVGMacros(primitive);
2598 status=QueryColorDatabase("#000000",&start_color,&image->exception);
2599 for (q=primitive; *q != '\0'; )
2600 {
2601 /*
2602 Interpret graphic primitive.
2603 */
2604 if (GetNextToken(q,&q,MaxTextExtent,keyword) < 1)
2605 break;
2606 if (*keyword == '\0')
2607 break;
2608 if (*keyword == '#')
2609 {
2610 /*
2611 Comment.
2612 */
2613 while ((*q != '\n') && (*q != '\0'))
2614 q++;
2615 continue;
2616 }
2617 p=q-strlen(keyword)-1;
2618 primitive_type=UndefinedPrimitive;
2619 current=graphic_context[n]->affine;
2620 GetAffineMatrix(&affine);
2621 *token='\0';
2622 switch (*keyword)
2623 {
2624 case ';':
2625 break;
2626 case 'a':
2627 case 'A':
2628 {
2629 if (LocaleCompare("affine",keyword) == 0)
2630 {
2631 (void) GetNextToken(q,&q,extent,token);
2632 affine.sx=GetDrawValue(token,&next_token);
2633 if (token == next_token)
2634 ThrowPointExpectedException(image,token);
2635 (void) GetNextToken(q,&q,extent,token);
2636 if (*token == ',')
2637 (void) GetNextToken(q,&q,extent,token);
2638 affine.ry=GetDrawValue(token,&next_token);
2639 if (token == next_token)
2640 ThrowPointExpectedException(image,token);
2641 (void) GetNextToken(q,&q,extent,token);
2642 if (*token == ',')
2643 (void) GetNextToken(q,&q,extent,token);
2644 affine.rx=GetDrawValue(token,&next_token);
2645 if (token == next_token)
2646 ThrowPointExpectedException(image,token);
2647 (void) GetNextToken(q,&q,extent,token);
2648 if (*token == ',')
2649 (void) GetNextToken(q,&q,extent,token);
2650 affine.sy=GetDrawValue(token,&next_token);
2651 if (token == next_token)
2652 ThrowPointExpectedException(image,token);
2653 (void) GetNextToken(q,&q,extent,token);
2654 if (*token == ',')
2655 (void) GetNextToken(q,&q,extent,token);
2656 affine.tx=GetDrawValue(token,&next_token);
2657 if (token == next_token)
2658 ThrowPointExpectedException(image,token);
2659 (void) GetNextToken(q,&q,extent,token);
2660 if (*token == ',')
2661 (void) GetNextToken(q,&q,extent,token);
2662 affine.ty=GetDrawValue(token,&next_token);
2663 if (token == next_token)
2664 ThrowPointExpectedException(image,token);
2665 break;
2666 }
2667 if (LocaleCompare("arc",keyword) == 0)
2668 {
2669 primitive_type=ArcPrimitive;
2670 break;
2671 }
2672 status=MagickFalse;
2673 break;
2674 }
2675 case 'b':
2676 case 'B':
2677 {
2678 if (LocaleCompare("bezier",keyword) == 0)
2679 {
2680 primitive_type=BezierPrimitive;
2681 break;
2682 }
2683 if (LocaleCompare("border-color",keyword) == 0)
2684 {
2685 (void) GetNextToken(q,&q,extent,token);
2686 status&=QueryColorDatabase(token,&graphic_context[n]->border_color,
2687 &image->exception);
2688 break;
2689 }
2690 status=MagickFalse;
2691 break;
2692 }
2693 case 'c':
2694 case 'C':
2695 {
2696 if (LocaleCompare("class",keyword) == 0)
2697 {
2698 const char
2699 *mvg_class;
2700
2701 (void) GetNextToken(q,&q,extent,token);
2702 if ((*token == '\0') || (*token == ';'))
2703 {
2704 status=MagickFalse;
2705 break;
2706 }
2707 /*
2708 Identify recursion.
2709 */
2710 for (i=0; i <= n; i++)
2711 if (LocaleCompare(token,graphic_context[i]->id) == 0)
2712 break;
2713 if (i <= n)
2714 break;
2715 mvg_class=(const char *) GetValueFromSplayTree(macros,token);
2716 if ((graphic_context[n]->render != MagickFalse) &&
2717 (mvg_class != (const char *) NULL) && (p > primitive))
2718 {
2719 char
2720 *elements;
2721
2722 ssize_t
2723 offset;
2724
2725 /*
2726 Inject class elements in stream.
2727 */
2728 (void) CloneString(&graphic_context[n]->id,token);
2729 offset=(ssize_t) (p-primitive);
2730 elements=AcquireString(primitive);
2731 elements[offset]='\0';
2732 (void) ConcatenateString(&elements,mvg_class);
2733 (void) ConcatenateString(&elements,"\n");
2734 (void) ConcatenateString(&elements,q);
2735 primitive=DestroyString(primitive);
2736 primitive=elements;
2737 q=primitive+offset;
2738 }
2739 break;
2740 }
2741 if (LocaleCompare("clip-path",keyword) == 0)
2742 {
2743 const char
2744 *clip_path;
2745
2746 /*
2747 Take a node from within the MVG document, and duplicate it here.
2748 */
2749 (void) GetNextToken(q,&q,extent,token);
2750 if (*token == '\0')
2751 {
2752 status=MagickFalse;
2753 break;
2754 }
2755 (void) CloneString(&graphic_context[n]->clip_mask,token);
2756 clip_path=(const char *) GetValueFromSplayTree(macros,token);
2757 if (clip_path != (const char *) NULL)
2758 {
2759 if (graphic_context[n]->clipping_mask != (Image *) NULL)
2760 graphic_context[n]->clipping_mask=
2761 DestroyImage(graphic_context[n]->clipping_mask);
2762 graphic_context[n]->clipping_mask=DrawClippingMask(image,
2763 graphic_context[n],token,clip_path,&image->exception);
2764 if (graphic_context[n]->compliance != SVGCompliance)
2765 {
2766 const char
2767 *clip_path;
2768
2769 clip_path=(const char *) GetValueFromSplayTree(macros,
2770 graphic_context[n]->clip_mask);
2771 if (clip_path != (const char *) NULL)
2772 (void) SetImageArtifact(image,
2773 graphic_context[n]->clip_mask,clip_path);
2774 status&=DrawClipPath(image,graphic_context[n],
2775 graphic_context[n]->clip_mask);
2776 }
2777 }
2778 break;
2779 }
2780 if (LocaleCompare("clip-rule",keyword) == 0)
2781 {
2782 ssize_t
2783 fill_rule;
2784
2785 (void) GetNextToken(q,&q,extent,token);
2786 fill_rule=ParseCommandOption(MagickFillRuleOptions,MagickFalse,
2787 token);
2788 if (fill_rule == -1)
2789 {
2790 status=MagickFalse;
2791 break;
2792 }
2793 graphic_context[n]->fill_rule=(FillRule) fill_rule;
2794 break;
2795 }
2796 if (LocaleCompare("clip-units",keyword) == 0)
2797 {
2798 ssize_t
2799 clip_units;
2800
2801 (void) GetNextToken(q,&q,extent,token);
2802 clip_units=ParseCommandOption(MagickClipPathOptions,MagickFalse,
2803 token);
2804 if (clip_units == -1)
2805 {
2806 status=MagickFalse;
2807 break;
2808 }
2809 graphic_context[n]->clip_units=(ClipPathUnits) clip_units;
2810 if (clip_units == ObjectBoundingBox)
2811 {
2812 GetAffineMatrix(&current);
2813 affine.sx=draw_info->bounds.x2;
2814 affine.sy=draw_info->bounds.y2;
2815 affine.tx=draw_info->bounds.x1;
2816 affine.ty=draw_info->bounds.y1;
2817 break;
2818 }
2819 break;
2820 }
2821 if (LocaleCompare("circle",keyword) == 0)
2822 {
2823 primitive_type=CirclePrimitive;
2824 break;
2825 }
2826 if (LocaleCompare("color",keyword) == 0)
2827 {
2828 primitive_type=ColorPrimitive;
2829 break;
2830 }
2831 if (LocaleCompare("compliance",keyword) == 0)
2832 {
2833 /*
2834 MVG compliance associates a clipping mask with an image; SVG
2835 compliance associates a clipping mask with a graphics context.
2836 */
2837 (void) GetNextToken(q,&q,extent,token);
2838 graphic_context[n]->compliance=(ComplianceType) ParseCommandOption(
2839 MagickComplianceOptions,MagickFalse,token);
2840 break;
2841 }
2842 if (LocaleCompare("currentColor",keyword) == 0)
2843 {
2844 (void) GetNextToken(q,&q,extent,token);
2845 break;
2846 }
2847 status=MagickFalse;
2848 break;
2849 }
2850 case 'd':
2851 case 'D':
2852 {
2853 if (LocaleCompare("decorate",keyword) == 0)
2854 {
2855 ssize_t
2856 decorate;
2857
2858 (void) GetNextToken(q,&q,extent,token);
2859 decorate=ParseCommandOption(MagickDecorateOptions,MagickFalse,
2860 token);
2861 if (decorate == -1)
2862 {
2863 status=MagickFalse;
2864 break;
2865 }
2866 graphic_context[n]->decorate=(DecorationType) decorate;
2867 break;
2868 }
2869 if (LocaleCompare("density",keyword) == 0)
2870 {
2871 (void) GetNextToken(q,&q,extent,token);
2872 (void) CloneString(&graphic_context[n]->density,token);
2873 break;
2874 }
2875 if (LocaleCompare("direction",keyword) == 0)
2876 {
2877 ssize_t
2878 direction;
2879
2880 (void) GetNextToken(q,&q,extent,token);
2881 direction=ParseCommandOption(MagickDirectionOptions,MagickFalse,
2882 token);
2883 if (direction == -1)
2884 status=MagickFalse;
2885 else
2886 graphic_context[n]->direction=(DirectionType) direction;
2887 break;
2888 }
2889 status=MagickFalse;
2890 break;
2891 }
2892 case 'e':
2893 case 'E':
2894 {
2895 if (LocaleCompare("ellipse",keyword) == 0)
2896 {
2897 primitive_type=EllipsePrimitive;
2898 break;
2899 }
2900 if (LocaleCompare("encoding",keyword) == 0)
2901 {
2902 (void) GetNextToken(q,&q,extent,token);
2903 (void) CloneString(&graphic_context[n]->encoding,token);
2904 break;
2905 }
2906 status=MagickFalse;
2907 break;
2908 }
2909 case 'f':
2910 case 'F':
2911 {
2912 if (LocaleCompare("fill",keyword) == 0)
2913 {
2914 const char
2915 *mvg_class;
2916
2917 (void) GetNextToken(q,&q,extent,token);
2918 if (graphic_context[n]->clip_path != MagickFalse)
2919 break;
2920 mvg_class=(const char *) GetValueFromSplayTree(macros,token);
2921 if (mvg_class != (const char *) NULL)
2922 {
2923 (void) DrawPatternPath(image,draw_info,mvg_class,
2924 &graphic_context[n]->fill_pattern);
2925 break;
2926 }
2927 (void) FormatLocaleString(pattern,MaxTextExtent,"%s",token);
2928 if (GetImageArtifact(image,pattern) != (const char *) NULL)
2929 {
2930 (void) DrawPatternPath(image,draw_info,token,
2931 &graphic_context[n]->fill_pattern);
2932 break;
2933 }
2934 status&=QueryColorDatabase(token,&graphic_context[n]->fill,
2935 &image->exception);
2936 if (graphic_context[n]->fill_opacity != (double) OpaqueOpacity)
2937 graphic_context[n]->fill.opacity=ClampToQuantum(
2938 graphic_context[n]->fill_opacity);
2939 break;
2940 }
2941 if (LocaleCompare("fill-opacity",keyword) == 0)
2942 {
2943 double
2944 opacity;
2945
2946 (void) GetNextToken(q,&q,extent,token);
2947 if (graphic_context[n]->clip_path != MagickFalse)
2948 break;
2949 factor=strchr(token,'%') != (char *) NULL ? 0.01 : 1.0;
2950 opacity=MagickMin(MagickMax(factor*
2951 GetDrawValue(token,&next_token),0.0),1.0);
2952 if (token == next_token)
2953 ThrowPointExpectedException(image,token);
2954 if (graphic_context[n]->compliance == SVGCompliance)
2955 graphic_context[n]->fill_opacity*=(1.0-opacity);
2956 else
2957 graphic_context[n]->fill_opacity=((MagickRealType) QuantumRange-
2958 graphic_context[n]->fill_opacity)*(1.0-opacity);
2959 if (graphic_context[n]->fill.opacity != TransparentOpacity)
2960 graphic_context[n]->fill.opacity=(Quantum)
2961 graphic_context[n]->fill_opacity;
2962 else
2963 graphic_context[n]->fill.opacity=ClampToQuantum((MagickRealType)
2964 QuantumRange*(1.0-opacity));
2965 break;
2966 }
2967 if (LocaleCompare("fill-rule",keyword) == 0)
2968 {
2969 ssize_t
2970 fill_rule;
2971
2972 (void) GetNextToken(q,&q,extent,token);
2973 fill_rule=ParseCommandOption(MagickFillRuleOptions,MagickFalse,
2974 token);
2975 if (fill_rule == -1)
2976 {
2977 status=MagickFalse;
2978 break;
2979 }
2980 graphic_context[n]->fill_rule=(FillRule) fill_rule;
2981 break;
2982 }
2983 if (LocaleCompare("font",keyword) == 0)
2984 {
2985 (void) GetNextToken(q,&q,extent,token);
2986 (void) CloneString(&graphic_context[n]->font,token);
2987 if (LocaleCompare("none",token) == 0)
2988 graphic_context[n]->font=(char *) RelinquishMagickMemory(
2989 graphic_context[n]->font);
2990 break;
2991 }
2992 if (LocaleCompare("font-family",keyword) == 0)
2993 {
2994 (void) GetNextToken(q,&q,extent,token);
2995 (void) CloneString(&graphic_context[n]->family,token);
2996 break;
2997 }
2998 if (LocaleCompare("font-size",keyword) == 0)
2999 {
3000 (void) GetNextToken(q,&q,extent,token);
3001 graphic_context[n]->pointsize=GetDrawValue(token,&next_token);
3002 if (token == next_token)
3003 ThrowPointExpectedException(image,token);
3004 break;
3005 }
3006 if (LocaleCompare("font-stretch",keyword) == 0)
3007 {
3008 ssize_t
3009 stretch;
3010
3011 (void) GetNextToken(q,&q,extent,token);
3012 stretch=ParseCommandOption(MagickStretchOptions,MagickFalse,token);
3013 if (stretch == -1)
3014 {
3015 status=MagickFalse;
3016 break;
3017 }
3018 graphic_context[n]->stretch=(StretchType) stretch;
3019 break;
3020 }
3021 if (LocaleCompare("font-style",keyword) == 0)
3022 {
3023 ssize_t
3024 style;
3025
3026 (void) GetNextToken(q,&q,extent,token);
3027 style=ParseCommandOption(MagickStyleOptions,MagickFalse,token);
3028 if (style == -1)
3029 {
3030 status=MagickFalse;
3031 break;
3032 }
3033 graphic_context[n]->style=(StyleType) style;
3034 break;
3035 }
3036 if (LocaleCompare("font-weight",keyword) == 0)
3037 {
3038 ssize_t
3039 weight;
3040
3041 (void) GetNextToken(q,&q,extent,token);
3042 weight=ParseCommandOption(MagickWeightOptions,MagickFalse,token);
3043 if (weight == -1)
3044 weight=(ssize_t) StringToUnsignedLong(token);
3045 graphic_context[n]->weight=(size_t) weight;
3046 break;
3047 }
3048 status=MagickFalse;
3049 break;
3050 }
3051 case 'g':
3052 case 'G':
3053 {
3054 if (LocaleCompare("gradient-units",keyword) == 0)
3055 {
3056 (void) GetNextToken(q,&q,extent,token);
3057 break;
3058 }
3059 if (LocaleCompare("gravity",keyword) == 0)
3060 {
3061 ssize_t
3062 gravity;
3063
3064 (void) GetNextToken(q,&q,extent,token);
3065 gravity=ParseCommandOption(MagickGravityOptions,MagickFalse,token);
3066 if (gravity == -1)
3067 {
3068 status=MagickFalse;
3069 break;
3070 }
3071 graphic_context[n]->gravity=(GravityType) gravity;
3072 break;
3073 }
3074 status=MagickFalse;
3075 break;
3076 }
3077 case 'i':
3078 case 'I':
3079 {
3080 if (LocaleCompare("image",keyword) == 0)
3081 {
3082 ssize_t
3083 compose;
3084
3085 primitive_type=ImagePrimitive;
3086 (void) GetNextToken(q,&q,extent,token);
3087 compose=ParseCommandOption(MagickComposeOptions,MagickFalse,token);
3088 if (compose == -1)
3089 {
3090 status=MagickFalse;
3091 break;
3092 }
3093 graphic_context[n]->compose=(CompositeOperator) compose;
3094 break;
3095 }
3096 if (LocaleCompare("interline-spacing",keyword) == 0)
3097 {
3098 (void) GetNextToken(q,&q,extent,token);
3099 graphic_context[n]->interline_spacing=GetDrawValue(token,
3100 &next_token);
3101 if (token == next_token)
3102 ThrowPointExpectedException(image,token);
3103 break;
3104 }
3105 if (LocaleCompare("interword-spacing",keyword) == 0)
3106 {
3107 (void) GetNextToken(q,&q,extent,token);
3108 graphic_context[n]->interword_spacing=GetDrawValue(token,
3109 &next_token);
3110 if (token == next_token)
3111 ThrowPointExpectedException(image,token);
3112 break;
3113 }
3114 status=MagickFalse;
3115 break;
3116 }
3117 case 'k':
3118 case 'K':
3119 {
3120 if (LocaleCompare("kerning",keyword) == 0)
3121 {
3122 (void) GetNextToken(q,&q,extent,token);
3123 graphic_context[n]->kerning=GetDrawValue(token,&next_token);
3124 if (token == next_token)
3125 ThrowPointExpectedException(image,token);
3126 break;
3127 }
3128 status=MagickFalse;
3129 break;
3130 }
3131 case 'l':
3132 case 'L':
3133 {
3134 if (LocaleCompare("letter-spacing",keyword) == 0)
3135 {
3136 (void) GetNextToken(q,&q,extent,token);
3137 if (IsPoint(token) == MagickFalse)
3138 break;
3139 clone_info=CloneDrawInfo((ImageInfo *) NULL,graphic_context[n]);
3140 clone_info->text=AcquireString(" ");
3141 status&=GetTypeMetrics(image,clone_info,&metrics);
3142 graphic_context[n]->kerning=metrics.width*
3143 GetDrawValue(token,&next_token);
3144 clone_info=DestroyDrawInfo(clone_info);
3145 if (token == next_token)
3146 ThrowPointExpectedException(image,token);
3147 break;
3148 }
3149 if (LocaleCompare("line",keyword) == 0)
3150 {
3151 primitive_type=LinePrimitive;
3152 break;
3153 }
3154 status=MagickFalse;
3155 break;
3156 }
3157 case 'm':
3158 case 'M':
3159 {
3160 if (LocaleCompare("mask",keyword) == 0)
3161 {
3162 const char
3163 *mask_path;
3164
3165 /*
3166 Take a node from within the MVG document, and duplicate it here.
3167 */
3168 (void) GetNextToken(q,&q,extent,token);
3169 mask_path=(const char *) GetValueFromSplayTree(macros,token);
3170 if (mask_path != (const char *) NULL)
3171 {
3172 if (graphic_context[n]->composite_mask != (Image *) NULL)
3173 graphic_context[n]->composite_mask=
3174 DestroyImage(graphic_context[n]->composite_mask);
3175 graphic_context[n]->composite_mask=DrawCompositeMask(image,
3176 graphic_context[n],token,mask_path,&image->exception);
3177 if (graphic_context[n]->compliance != SVGCompliance)
3178 status=SetImageMask(image,graphic_context[n]->composite_mask);
3179 }
3180 break;
3181 }
3182 if (LocaleCompare("matte",keyword) == 0)
3183 {
3184 primitive_type=MattePrimitive;
3185 break;
3186 }
3187 status=MagickFalse;
3188 break;
3189 }
3190 case 'o':
3191 case 'O':
3192 {
3193 if (LocaleCompare("offset",keyword) == 0)
3194 {
3195 (void) GetNextToken(q,&q,extent,token);
3196 break;
3197 }
3198 if (LocaleCompare("opacity",keyword) == 0)
3199 {
3200 double
3201 opacity;
3202
3203 (void) GetNextToken(q,&q,extent,token);
3204 if (graphic_context[n]->clip_path != MagickFalse)
3205 break;
3206 factor=strchr(token,'%') != (char *) NULL ? 0.01 : 1.0;
3207 opacity=1.0-MagickMin(MagickMax(factor*
3208 GetDrawValue(token,&next_token),0.0),1.0);
3209 if (token == next_token)
3210 ThrowPointExpectedException(image,token);
3211 if (graphic_context[n]->compliance == SVGCompliance)
3212 {
3213 graphic_context[n]->fill_opacity*=opacity;
3214 graphic_context[n]->stroke_opacity*=opacity;
3215 }
3216 else
3217 {
3218 graphic_context[n]->fill_opacity=(double) QuantumRange*opacity;
3219 graphic_context[n]->stroke_opacity=(double) QuantumRange*
3220 opacity;
3221 }
3222 if (graphic_context[n]->fill.opacity != (double) TransparentOpacity)
3223 {
3224 graphic_context[n]->fill.opacity=
3225 graphic_context[n]->fill_opacity;
3226 graphic_context[n]->stroke.opacity=
3227 graphic_context[n]->stroke_opacity;
3228 }
3229 else
3230 {
3231 graphic_context[n]->fill.opacity=(MagickRealType)
3232 ClampToQuantum((double) QuantumRange*opacity);
3233 graphic_context[n]->stroke.opacity=(MagickRealType)
3234 ClampToQuantum((double) QuantumRange*opacity);
3235 }
3236 break;
3237 }
3238 status=MagickFalse;
3239 break;
3240 }
3241 case 'p':
3242 case 'P':
3243 {
3244 if (LocaleCompare("path",keyword) == 0)
3245 {
3246 primitive_type=PathPrimitive;
3247 break;
3248 }
3249 if (LocaleCompare("point",keyword) == 0)
3250 {
3251 primitive_type=PointPrimitive;
3252 break;
3253 }
3254 if (LocaleCompare("polyline",keyword) == 0)
3255 {
3256 primitive_type=PolylinePrimitive;
3257 break;
3258 }
3259 if (LocaleCompare("polygon",keyword) == 0)
3260 {
3261 primitive_type=PolygonPrimitive;
3262 break;
3263 }
3264 if (LocaleCompare("pop",keyword) == 0)
3265 {
3266 if (GetNextToken(q,&q,extent,token) < 1)
3267 break;
3268 if (LocaleCompare("class",token) == 0)
3269 break;
3270 if (LocaleCompare("clip-path",token) == 0)
3271 break;
3272 if (LocaleCompare("defs",token) == 0)
3273 {
3274 defsDepth--;
3275 graphic_context[n]->render=defsDepth > 0 ? MagickFalse :
3276 MagickTrue;
3277 break;
3278 }
3279 if (LocaleCompare("gradient",token) == 0)
3280 break;
3281 if (LocaleCompare("graphic-context",token) == 0)
3282 {
3283 if (n <= 0)
3284 {
3285 (void) ThrowMagickException(&image->exception,
3286 GetMagickModule(),DrawError,
3287 "UnbalancedGraphicContextPushPop","`%s'",token);
3288 status=MagickFalse;
3289 n=0;
3290 break;
3291 }
3292 if ((graphic_context[n]->clip_mask != (char *) NULL) &&
3293 (graphic_context[n]->compliance != SVGCompliance))
3294 if (LocaleCompare(graphic_context[n]->clip_mask,
3295 graphic_context[n-1]->clip_mask) != 0)
3296 status=SetImageClipMask(image,(Image *) NULL);
3297 graphic_context[n]=DestroyDrawInfo(graphic_context[n]);
3298 n--;
3299 break;
3300 }
3301 if (LocaleCompare("mask",token) == 0)
3302 break;
3303 if (LocaleCompare("pattern",token) == 0)
3304 break;
3305 if (LocaleCompare("symbol",token) == 0)
3306 {
3307 symbolDepth--;
3308 graphic_context[n]->render=symbolDepth > 0 ? MagickFalse :
3309 MagickTrue;
3310 break;
3311 }
3312 status=MagickFalse;
3313 break;
3314 }
3315 if (LocaleCompare("push",keyword) == 0)
3316 {
3317 if (GetNextToken(q,&q,extent,token) < 1)
3318 break;
3319 if (LocaleCompare("class",token) == 0)
3320 {
3321 /*
3322 Class context.
3323 */
3324 for (p=q; *q != '\0'; )
3325 {
3326 if (GetNextToken(q,&q,extent,token) < 1)
3327 break;
3328 if (LocaleCompare(token,"pop") != 0)
3329 continue;
3330 (void) GetNextToken(q,(const char **) NULL,extent,token);
3331 if (LocaleCompare(token,"class") != 0)
3332 continue;
3333 break;
3334 }
3335 (void) GetNextToken(q,&q,extent,token);
3336 break;
3337 }
3338 if (LocaleCompare("clip-path",token) == 0)
3339 {
3340 (void) GetNextToken(q,&q,extent,token);
3341 for (p=q; *q != '\0'; )
3342 {
3343 if (GetNextToken(q,&q,extent,token) < 1)
3344 break;
3345 if (LocaleCompare(token,"pop") != 0)
3346 continue;
3347 (void) GetNextToken(q,(const char **) NULL,extent,token);
3348 if (LocaleCompare(token,"clip-path") != 0)
3349 continue;
3350 break;
3351 }
3352 if ((q == (char *) NULL) || (p == (char *) NULL) || ((q-4) < p))
3353 {
3354 status=MagickFalse;
3355 break;
3356 }
3357 (void) GetNextToken(q,&q,extent,token);
3358 break;
3359 }
3360 if (LocaleCompare("defs",token) == 0)
3361 {
3362 defsDepth++;
3363 graphic_context[n]->render=defsDepth > 0 ? MagickFalse :
3364 MagickTrue;
3365 break;
3366 }
3367 if (LocaleCompare("gradient",token) == 0)
3368 {
3369 char
3370 key[2*MaxTextExtent],
3371 name[MaxTextExtent],
3372 type[MaxTextExtent];
3373
3374 SegmentInfo
3375 segment;
3376
3377 (void) GetNextToken(q,&q,extent,token);
3378 (void) CopyMagickString(name,token,MaxTextExtent);
3379 (void) GetNextToken(q,&q,extent,token);
3380 (void) CopyMagickString(type,token,MaxTextExtent);
3381 (void) GetNextToken(q,&q,extent,token);
3382 segment.x1=GetDrawValue(token,&next_token);
3383 if (token == next_token)
3384 ThrowPointExpectedException(image,token);
3385 (void) GetNextToken(q,&q,extent,token);
3386 if (*token == ',')
3387 (void) GetNextToken(q,&q,extent,token);
3388 segment.y1=GetDrawValue(token,&next_token);
3389 if (token == next_token)
3390 ThrowPointExpectedException(image,token);
3391 (void) GetNextToken(q,&q,extent,token);
3392 if (*token == ',')
3393 (void) GetNextToken(q,&q,extent,token);
3394 segment.x2=GetDrawValue(token,&next_token);
3395 if (token == next_token)
3396 ThrowPointExpectedException(image,token);
3397 (void) GetNextToken(q,&q,extent,token);
3398 if (*token == ',')
3399 (void) GetNextToken(q,&q,extent,token);
3400 segment.y2=GetDrawValue(token,&next_token);
3401 if (token == next_token)
3402 ThrowPointExpectedException(image,token);
3403 if (LocaleCompare(type,"radial") == 0)
3404 {
3405 (void) GetNextToken(q,&q,extent,token);
3406 if (*token == ',')
3407 (void) GetNextToken(q,&q,extent,token);
3408 }
3409 for (p=q; *q != '\0'; )
3410 {
3411 if (GetNextToken(q,&q,extent,token) < 1)
3412 break;
3413 if (LocaleCompare(token,"pop") != 0)
3414 continue;
3415 (void) GetNextToken(q,(const char **) NULL,extent,token);
3416 if (LocaleCompare(token,"gradient") != 0)
3417 continue;
3418 break;
3419 }
3420 if ((q == (char *) NULL) || (*q == '\0') ||
3421 (p == (char *) NULL) || ((q-4) < p) ||
3422 ((q-p+4+1) > extent))
3423 {
3424 status=MagickFalse;
3425 break;
3426 }
3427 (void) CopyMagickString(token,p,(size_t) (q-p-4+1));
3428 bounds.x1=graphic_context[n]->affine.sx*segment.x1+
3429 graphic_context[n]->affine.ry*segment.y1+
3430 graphic_context[n]->affine.tx;
3431 bounds.y1=graphic_context[n]->affine.rx*segment.x1+
3432 graphic_context[n]->affine.sy*segment.y1+
3433 graphic_context[n]->affine.ty;
3434 bounds.x2=graphic_context[n]->affine.sx*segment.x2+
3435 graphic_context[n]->affine.ry*segment.y2+
3436 graphic_context[n]->affine.tx;
3437 bounds.y2=graphic_context[n]->affine.rx*segment.x2+
3438 graphic_context[n]->affine.sy*segment.y2+
3439 graphic_context[n]->affine.ty;
3440 (void) FormatLocaleString(key,MaxTextExtent,"%s",name);
3441 (void) SetImageArtifact(image,key,token);
3442 (void) FormatLocaleString(key,MaxTextExtent,"%s-type",name);
3443 (void) SetImageArtifact(image,key,type);
3444 (void) FormatLocaleString(key,MaxTextExtent,"%s-geometry",name);
3445 (void) FormatLocaleString(geometry,MaxTextExtent,
3446 "%gx%g%+.15g%+.15g",
3447 MagickMax(fabs(bounds.x2-bounds.x1+1.0),1.0),
3448 MagickMax(fabs(bounds.y2-bounds.y1+1.0),1.0),
3449 bounds.x1,bounds.y1);
3450 (void) SetImageArtifact(image,key,geometry);
3451 (void) GetNextToken(q,&q,extent,token);
3452 break;
3453 }
3454 if (LocaleCompare("graphic-context",token) == 0)
3455 {
3456 n++;
3457 graphic_context=(DrawInfo **) ResizeQuantumMemory(
3458 graphic_context,(size_t) (n+1),sizeof(*graphic_context));
3459 if (graphic_context == (DrawInfo **) NULL)
3460 {
3461 (void) ThrowMagickException(&image->exception,
3462 GetMagickModule(),ResourceLimitError,
3463 "MemoryAllocationFailed","`%s'",image->filename);
3464 status=MagickFalse;
3465 break;
3466 }
3467 graphic_context[n]=CloneDrawInfo((ImageInfo *) NULL,
3468 graphic_context[n-1]);
3469 if (*q == '"')
3470 {
3471 (void) GetNextToken(q,&q,extent,token);
3472 (void) CloneString(&graphic_context[n]->id,token);
3473 }
3474 if (n > MagickMaxRecursionDepth)
3475 {
3476 (void) ThrowMagickException(&image->exception,
3477 GetMagickModule(),DrawError,
3478 "VectorGraphicsNestedTooDeeply","`%s'",image->filename);
3479 status=MagickFalse;
3480 }
3481 break;
3482 }
3483 if (LocaleCompare("mask",token) == 0)
3484 {
3485 (void) GetNextToken(q,&q,extent,token);
3486 break;
3487 }
3488 if (LocaleCompare("pattern",token) == 0)
3489 {
3490 RectangleInfo
3491 bounds;
3492
3493 (void) GetNextToken(q,&q,extent,token);
3494 (void) CopyMagickString(name,token,MaxTextExtent);
3495 (void) GetNextToken(q,&q,extent,token);
3496 bounds.x=CastDoubleToLong(ceil(GetDrawValue(token,
3497 &next_token)-0.5));
3498 if (token == next_token)
3499 ThrowPointExpectedException(image,token);
3500 (void) GetNextToken(q,&q,extent,token);
3501 if (*token == ',')
3502 (void) GetNextToken(q,&q,extent,token);
3503 bounds.y=CastDoubleToLong(ceil(GetDrawValue(token,
3504 &next_token)-0.5));
3505 if (token == next_token)
3506 ThrowPointExpectedException(image,token);
3507 (void) GetNextToken(q,&q,extent,token);
3508 if (*token == ',')
3509 (void) GetNextToken(q,&q,extent,token);
3510 bounds.width=CastDoubleToUnsigned(GetDrawValue(token,
3511 &next_token)+0.5);
3512 if (token == next_token)
3513 ThrowPointExpectedException(image,token);
3514 (void) GetNextToken(q,&q,extent,token);
3515 if (*token == ',')
3516 (void) GetNextToken(q,&q,extent,token);
3517 bounds.height=CastDoubleToUnsigned(GetDrawValue(token,
3518 &next_token)+0.5);
3519 if (token == next_token)
3520 ThrowPointExpectedException(image,token);
3521 for (p=q; *q != '\0'; )
3522 {
3523 if (GetNextToken(q,&q,extent,token) < 1)
3524 break;
3525 if (LocaleCompare(token,"pop") != 0)
3526 continue;
3527 (void) GetNextToken(q,(const char **) NULL,extent,token);
3528 if (LocaleCompare(token,"pattern") != 0)
3529 continue;
3530 break;
3531 }
3532 if ((q == (char *) NULL) || (p == (char *) NULL) ||
3533 ((q-4) < p) || ((size_t) (q-p+4+1) > extent))
3534 {
3535 status=MagickFalse;
3536 break;
3537 }
3538 (void) CopyMagickString(token,p,(size_t) (q-p-4+1));
3539 (void) FormatLocaleString(key,MaxTextExtent,"%s",name);
3540 (void) SetImageArtifact(image,key,token);
3541 (void) FormatLocaleString(key,MaxTextExtent,"%s-geometry",name);
3542 (void) FormatLocaleString(geometry,MaxTextExtent,
3543 "%.20gx%.20g%+.20g%+.20g",(double) bounds.width,(double)
3544 bounds.height,(double) bounds.x,(double) bounds.y);
3545 (void) SetImageArtifact(image,key,geometry);
3546 (void) GetNextToken(q,&q,extent,token);
3547 break;
3548 }
3549 if (LocaleCompare("symbol",token) == 0)
3550 {
3551 symbolDepth++;
3552 graphic_context[n]->render=symbolDepth > 0 ? MagickFalse :
3553 MagickTrue;
3554 break;
3555 }
3556 status=MagickFalse;
3557 break;
3558 }
3559 status=MagickFalse;
3560 break;
3561 }
3562 case 'r':
3563 case 'R':
3564 {
3565 if (LocaleCompare("rectangle",keyword) == 0)
3566 {
3567 primitive_type=RectanglePrimitive;
3568 break;
3569 }
3570 if (LocaleCompare("rotate",keyword) == 0)
3571 {
3572 (void) GetNextToken(q,&q,extent,token);
3573 angle=GetDrawValue(token,&next_token);
3574 if (token == next_token)
3575 ThrowPointExpectedException(image,token);
3576 affine.sx=cos(DegreesToRadians(fmod((double) angle,360.0)));
3577 affine.rx=sin(DegreesToRadians(fmod((double) angle,360.0)));
3578 affine.ry=(-sin(DegreesToRadians(fmod((double) angle,360.0))));
3579 affine.sy=cos(DegreesToRadians(fmod((double) angle,360.0)));
3580 break;
3581 }
3582 if (LocaleCompare("roundRectangle",keyword) == 0)
3583 {
3584 primitive_type=RoundRectanglePrimitive;
3585 break;
3586 }
3587 status=MagickFalse;
3588 break;
3589 }
3590 case 's':
3591 case 'S':
3592 {
3593 if (LocaleCompare("scale",keyword) == 0)
3594 {
3595 (void) GetNextToken(q,&q,extent,token);
3596 affine.sx=GetDrawValue(token,&next_token);
3597 if (token == next_token)
3598 ThrowPointExpectedException(image,token);
3599 (void) GetNextToken(q,&q,extent,token);
3600 if (*token == ',')
3601 (void) GetNextToken(q,&q,extent,token);
3602 affine.sy=GetDrawValue(token,&next_token);
3603 if (token == next_token)
3604 ThrowPointExpectedException(image,token);
3605 break;
3606 }
3607 if (LocaleCompare("skewX",keyword) == 0)
3608 {
3609 (void) GetNextToken(q,&q,extent,token);
3610 angle=GetDrawValue(token,&next_token);
3611 if (token == next_token)
3612 ThrowPointExpectedException(image,token);
3613 affine.ry=sin(DegreesToRadians(angle));
3614 break;
3615 }
3616 if (LocaleCompare("skewY",keyword) == 0)
3617 {
3618 (void) GetNextToken(q,&q,extent,token);
3619 angle=GetDrawValue(token,&next_token);
3620 if (token == next_token)
3621 ThrowPointExpectedException(image,token);
3622 affine.rx=(-tan(DegreesToRadians(angle)/2.0));
3623 break;
3624 }
3625 if (LocaleCompare("stop-color",keyword) == 0)
3626 {
3627 GradientType
3628 type;
3629
3630 PixelPacket
3631 stop_color;
3632
3633 (void) GetNextToken(q,&q,extent,token);
3634 status&=QueryColorDatabase(token,&stop_color,&image->exception);
3635 type=LinearGradient;
3636 if (draw_info->gradient.type == RadialGradient)
3637 type=RadialGradient;
3638 (void) GradientImage(image,type,PadSpread,&start_color,&stop_color);
3639 start_color=stop_color;
3640 (void) GetNextToken(q,&q,extent,token);
3641 break;
3642 }
3643 if (LocaleCompare("stroke",keyword) == 0)
3644 {
3645 const char
3646 *mvg_class;
3647
3648 (void) GetNextToken(q,&q,extent,token);
3649 if (graphic_context[n]->clip_path != MagickFalse)
3650 break;
3651 mvg_class=(const char *) GetValueFromSplayTree(macros,token);
3652 if (mvg_class != (const char *) NULL)
3653 {
3654 (void) DrawPatternPath(image,draw_info,mvg_class,
3655 &graphic_context[n]->stroke_pattern);
3656 break;
3657 }
3658 (void) FormatLocaleString(pattern,MaxTextExtent,"%s",token);
3659 if (GetImageArtifact(image,pattern) != (const char *) NULL)
3660 {
3661 (void) DrawPatternPath(image,draw_info,token,
3662 &graphic_context[n]->stroke_pattern);
3663 break;
3664 }
3665 status&=QueryColorDatabase(token,&graphic_context[n]->stroke,
3666 &image->exception);
3667 if (graphic_context[n]->stroke_opacity != (MagickRealType) OpaqueOpacity)
3668 graphic_context[n]->stroke.opacity=ClampToQuantum(
3669 graphic_context[n]->stroke_opacity);
3670 break;
3671 }
3672 if (LocaleCompare("stroke-antialias",keyword) == 0)
3673 {
3674 (void) GetNextToken(q,&q,extent,token);
3675 graphic_context[n]->stroke_antialias=StringToLong(token) != 0 ?
3676 MagickTrue : MagickFalse;
3677 break;
3678 }
3679 if (LocaleCompare("stroke-dasharray",keyword) == 0)
3680 {
3681 if (graphic_context[n]->dash_pattern != (double *) NULL)
3682 graphic_context[n]->dash_pattern=(double *)
3683 RelinquishMagickMemory(graphic_context[n]->dash_pattern);
3684 if (IsPoint(q) != MagickFalse)
3685 {
3686 const char
3687 *p;
3688
3689 p=q;
3690 (void) GetNextToken(p,&p,extent,token);
3691 if (*token == ',')
3692 (void) GetNextToken(p,&p,extent,token);
3693 for (x=0; IsPoint(token) != MagickFalse; x++)
3694 {
3695 (void) GetNextToken(p,&p,extent,token);
3696 if (*token == ',')
3697 (void) GetNextToken(p,&p,extent,token);
3698 }
3699 graphic_context[n]->dash_pattern=(double *)
3700 AcquireQuantumMemory((size_t) (2*x+2),
3701 sizeof(*graphic_context[n]->dash_pattern));
3702 if (graphic_context[n]->dash_pattern == (double *) NULL)
3703 {
3704 (void) ThrowMagickException(&image->exception,
3705 GetMagickModule(),ResourceLimitError,
3706 "MemoryAllocationFailed","`%s'",image->filename);
3707 status=MagickFalse;
3708 break;
3709 }
3710 (void) memset(graphic_context[n]->dash_pattern,0,(size_t)
3711 (2*x+2)*sizeof(*graphic_context[n]->dash_pattern));
3712 for (j=0; j < x; j++)
3713 {
3714 (void) GetNextToken(q,&q,extent,token);
3715 if (*token == ',')
3716 (void) GetNextToken(q,&q,extent,token);
3717 graphic_context[n]->dash_pattern[j]=GetDrawValue(token,
3718 &next_token);
3719 if (token == next_token)
3720 ThrowPointExpectedException(image,token);
3721 if (graphic_context[n]->dash_pattern[j] <= 0.0)
3722 status=MagickFalse;
3723 }
3724 if ((x & 0x01) != 0)
3725 for ( ; j < (2*x); j++)
3726 graphic_context[n]->dash_pattern[j]=
3727 graphic_context[n]->dash_pattern[j-x];
3728 graphic_context[n]->dash_pattern[j]=0.0;
3729 break;
3730 }
3731 (void) GetNextToken(q,&q,extent,token);
3732 break;
3733 }
3734 if (LocaleCompare("stroke-dashoffset",keyword) == 0)
3735 {
3736 (void) GetNextToken(q,&q,extent,token);
3737 graphic_context[n]->dash_offset=GetDrawValue(token,&next_token);
3738 if (token == next_token)
3739 ThrowPointExpectedException(image,token);
3740 break;
3741 }
3742 if (LocaleCompare("stroke-linecap",keyword) == 0)
3743 {
3744 ssize_t
3745 linecap;
3746
3747 (void) GetNextToken(q,&q,extent,token);
3748 linecap=ParseCommandOption(MagickLineCapOptions,MagickFalse,token);
3749 if (linecap == -1)
3750 {
3751 status=MagickFalse;
3752 break;
3753 }
3754 graphic_context[n]->linecap=(LineCap) linecap;
3755 break;
3756 }
3757 if (LocaleCompare("stroke-linejoin",keyword) == 0)
3758 {
3759 ssize_t
3760 linejoin;
3761
3762 (void) GetNextToken(q,&q,extent,token);
3763 linejoin=ParseCommandOption(MagickLineJoinOptions,MagickFalse,
3764 token);
3765 if (linejoin == -1)
3766 {
3767 status=MagickFalse;
3768 break;
3769 }
3770 graphic_context[n]->linejoin=(LineJoin) linejoin;
3771 break;
3772 }
3773 if (LocaleCompare("stroke-miterlimit",keyword) == 0)
3774 {
3775 (void) GetNextToken(q,&q,extent,token);
3776 graphic_context[n]->miterlimit=StringToUnsignedLong(token);
3777 break;
3778 }
3779 if (LocaleCompare("stroke-opacity",keyword) == 0)
3780 {
3781 double
3782 opacity;
3783
3784 (void) GetNextToken(q,&q,extent,token);
3785 if (graphic_context[n]->clip_path != MagickFalse)
3786 break;
3787 factor=strchr(token,'%') != (char *) NULL ? 0.01 : 1.0;
3788 opacity=MagickMin(MagickMax(factor*
3789 GetDrawValue(token,&next_token),0.0),1.0);
3790 if (token == next_token)
3791 ThrowPointExpectedException(image,token);
3792 if (graphic_context[n]->compliance == SVGCompliance)
3793 graphic_context[n]->stroke_opacity*=(1.0-opacity);
3794 else
3795 graphic_context[n]->stroke_opacity=((MagickRealType) QuantumRange-
3796 graphic_context[n]->stroke_opacity)*(1.0-opacity);
3797 if (graphic_context[n]->stroke.opacity != TransparentOpacity)
3798 graphic_context[n]->stroke.opacity=(Quantum)
3799 graphic_context[n]->stroke_opacity;
3800 else
3801 graphic_context[n]->stroke.opacity=ClampToQuantum(
3802 (MagickRealType) QuantumRange*opacity);
3803 break;
3804 }
3805 if (LocaleCompare("stroke-width",keyword) == 0)
3806 {
3807 (void) GetNextToken(q,&q,extent,token);
3808 if (graphic_context[n]->clip_path != MagickFalse)
3809 break;
3810 graphic_context[n]->stroke_width=GetDrawValue(token,&next_token);
3811 if ((token == next_token) ||
3812 (graphic_context[n]->stroke_width < 0.0))
3813 ThrowPointExpectedException(image,token);
3814 break;
3815 }
3816 status=MagickFalse;
3817 break;
3818 }
3819 case 't':
3820 case 'T':
3821 {
3822 if (LocaleCompare("text",keyword) == 0)
3823 {
3824 primitive_type=TextPrimitive;
3825 cursor=0.0;
3826 break;
3827 }
3828 if (LocaleCompare("text-align",keyword) == 0)
3829 {
3830 ssize_t
3831 align;
3832
3833 (void) GetNextToken(q,&q,extent,token);
3834 align=ParseCommandOption(MagickAlignOptions,MagickFalse,token);
3835 if (align == -1)
3836 {
3837 status=MagickFalse;
3838 break;
3839 }
3840 graphic_context[n]->align=(AlignType) align;
3841 break;
3842 }
3843 if (LocaleCompare("text-anchor",keyword) == 0)
3844 {
3845 ssize_t
3846 align;
3847
3848 (void) GetNextToken(q,&q,extent,token);
3849 align=ParseCommandOption(MagickAlignOptions,MagickFalse,token);
3850 if (align == -1)
3851 {
3852 status=MagickFalse;
3853 break;
3854 }
3855 graphic_context[n]->align=(AlignType) align;
3856 break;
3857 }
3858 if (LocaleCompare("text-antialias",keyword) == 0)
3859 {
3860 (void) GetNextToken(q,&q,extent,token);
3861 graphic_context[n]->text_antialias=StringToLong(token) != 0 ?
3862 MagickTrue : MagickFalse;
3863 break;
3864 }
3865 if (LocaleCompare("text-undercolor",keyword) == 0)
3866 {
3867 (void) GetNextToken(q,&q,extent,token);
3868 status&=QueryColorDatabase(token,&graphic_context[n]->undercolor,
3869 &image->exception);
3870 break;
3871 }
3872 if (LocaleCompare("translate",keyword) == 0)
3873 {
3874 (void) GetNextToken(q,&q,extent,token);
3875 affine.tx=GetDrawValue(token,&next_token);
3876 if (token == next_token)
3877 ThrowPointExpectedException(image,token);
3878 (void) GetNextToken(q,&q,extent,token);
3879 if (*token == ',')
3880 (void) GetNextToken(q,&q,extent,token);
3881 affine.ty=GetDrawValue(token,&next_token);
3882 if (token == next_token)
3883 ThrowPointExpectedException(image,token);
3884 break;
3885 }
3886 status=MagickFalse;
3887 break;
3888 }
3889 case 'u':
3890 case 'U':
3891 {
3892 if (LocaleCompare("use",keyword) == 0)
3893 {
3894 const char
3895 *use;
3896
3897 /*
3898 Get a macro from the MVG document, and "use" it here.
3899 */
3900 (void) GetNextToken(q,&q,extent,token);
3901 use=(const char *) GetValueFromSplayTree(macros,token);
3902 if (use != (const char *) NULL)
3903 {
3904 clone_info=CloneDrawInfo((ImageInfo *) NULL,graphic_context[n]);
3905 (void) CloneString(&clone_info->primitive,use);
3906 status=RenderMVGContent(image,clone_info,depth+1);
3907 clone_info=DestroyDrawInfo(clone_info);
3908 }
3909 break;
3910 }
3911 status=MagickFalse;
3912 break;
3913 }
3914 case 'v':
3915 case 'V':
3916 {
3917 if (LocaleCompare("viewbox",keyword) == 0)
3918 {
3919 (void) GetNextToken(q,&q,extent,token);
3920 graphic_context[n]->viewbox.x=CastDoubleToLong(ceil(
3921 GetDrawValue(token,&next_token)-0.5));
3922 if (token == next_token)
3923 ThrowPointExpectedException(image,token);
3924 (void) GetNextToken(q,&q,extent,token);
3925 if (*token == ',')
3926 (void) GetNextToken(q,&q,extent,token);
3927 graphic_context[n]->viewbox.y=CastDoubleToLong(ceil(
3928 GetDrawValue(token,&next_token)-0.5));
3929 if (token == next_token)
3930 ThrowPointExpectedException(image,token);
3931 (void) GetNextToken(q,&q,extent,token);
3932 if (*token == ',')
3933 (void) GetNextToken(q,&q,extent,token);
3934 graphic_context[n]->viewbox.width=CastDoubleToUnsigned(
3935 GetDrawValue(token,&next_token)+0.5);
3936 if (token == next_token)
3937 ThrowPointExpectedException(image,token);
3938 (void) GetNextToken(q,&q,extent,token);
3939 if (*token == ',')
3940 (void) GetNextToken(q,&q,extent,token);
3941 graphic_context[n]->viewbox.height=CastDoubleToUnsigned(
3942 GetDrawValue(token,&next_token)+0.5);
3943 if (token == next_token)
3944 ThrowPointExpectedException(image,token);
3945 break;
3946 }
3947 status=MagickFalse;
3948 break;
3949 }
3950 case 'w':
3951 case 'W':
3952 {
3953 if (LocaleCompare("word-spacing",keyword) == 0)
3954 {
3955 (void) GetNextToken(q,&q,extent,token);
3956 graphic_context[n]->interword_spacing=GetDrawValue(token,
3957 &next_token);
3958 if (token == next_token)
3959 ThrowPointExpectedException(image,token);
3960 break;
3961 }
3962 status=MagickFalse;
3963 break;
3964 }
3965 default:
3966 {
3967 status=MagickFalse;
3968 break;
3969 }
3970 }
3971 if (status == MagickFalse)
3972 break;
3973 if ((fabs(affine.sx-1.0) >= MagickEpsilon) ||
3974 (fabs(affine.rx) >= MagickEpsilon) || (fabs(affine.ry) >= MagickEpsilon) ||
3975 (fabs(affine.sy-1.0) >= MagickEpsilon) ||
3976 (fabs(affine.tx) >= MagickEpsilon) || (fabs(affine.ty) >= MagickEpsilon))
3977 {
3978 graphic_context[n]->affine.sx=current.sx*affine.sx+current.ry*affine.rx;
3979 graphic_context[n]->affine.rx=current.rx*affine.sx+current.sy*affine.rx;
3980 graphic_context[n]->affine.ry=current.sx*affine.ry+current.ry*affine.sy;
3981 graphic_context[n]->affine.sy=current.rx*affine.ry+current.sy*affine.sy;
3982 graphic_context[n]->affine.tx=current.sx*affine.tx+current.ry*affine.ty+
3983 current.tx;
3984 graphic_context[n]->affine.ty=current.rx*affine.tx+current.sy*affine.ty+
3985 current.ty;
3986 }
3987 if (primitive_type == UndefinedPrimitive)
3988 {
3989 if ((draw_info->debug != MagickFalse) && (q > p))
3990 (void) LogMagickEvent(DrawEvent,GetMagickModule()," %.*s",(int)
3991 (q-p-1),p);
3992 continue;
3993 }
3994 /*
3995 Parse the primitive attributes.
3996 */
3997 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
3998 if (primitive_info[i].text != (char *) NULL)
3999 primitive_info[i].text=DestroyString(primitive_info[i].text);
4000 i=0;
4001 mvg_info.offset=i;
4002 j=0;
4003 primitive_info[0].primitive=primitive_type;
4004 primitive_info[0].point.x=0.0;
4005 primitive_info[0].point.y=0.0;
4006 primitive_info[0].coordinates=0;
4007 primitive_info[0].method=FloodfillMethod;
4008 primitive_info[0].closed_subpath=MagickFalse;
4009 for (x=0; *q != '\0'; x++)
4010 {
4011 /*
4012 Define points.
4013 */
4014 if (IsPoint(q) == MagickFalse)
4015 break;
4016 (void) GetNextToken(q,&q,extent,token);
4017 point.x=GetDrawValue(token,&next_token);
4018 if (token == next_token)
4019 ThrowPointExpectedException(image,token);
4020 (void) GetNextToken(q,&q,extent,token);
4021 if (*token == ',')
4022 (void) GetNextToken(q,&q,extent,token);
4023 point.y=GetDrawValue(token,&next_token);
4024 if (token == next_token)
4025 ThrowPointExpectedException(image,token);
4026 (void) GetNextToken(q,(const char **) NULL,extent,token);
4027 if (*token == ',')
4028 (void) GetNextToken(q,&q,extent,token);
4029 primitive_info[i].primitive=primitive_type;
4030 primitive_info[i].point=point;
4031 primitive_info[i].coordinates=0;
4032 primitive_info[i].method=FloodfillMethod;
4033 primitive_info[i].closed_subpath=MagickFalse;
4034 i++;
4035 mvg_info.offset=i;
4036 if (i < (ssize_t) number_points)
4037 continue;
4038 status&=CheckPrimitiveExtent(&mvg_info,(double) number_points);
4039 primitive_info=(*mvg_info.primitive_info);
4040 }
4041 if (status == MagickFalse)
4042 break;
4043 if (primitive_info[j].text != (char *) NULL)
4044 primitive_info[j].text=DestroyString(primitive_info[j].text);
4045 primitive_info[j].primitive=primitive_type;
4046 primitive_info[j].coordinates=(size_t) x;
4047 primitive_info[j].method=FloodfillMethod;
4048 primitive_info[j].closed_subpath=MagickFalse;
4049 /*
4050 Circumscribe primitive within a circle.
4051 */
4052 bounds.x1=primitive_info[j].point.x;
4053 bounds.y1=primitive_info[j].point.y;
4054 bounds.x2=primitive_info[j].point.x;
4055 bounds.y2=primitive_info[j].point.y;
4056 for (k=1; k < (ssize_t) primitive_info[j].coordinates; k++)
4057 {
4058 point=primitive_info[j+k].point;
4059 if (point.x < bounds.x1)
4060 bounds.x1=point.x;
4061 if (point.y < bounds.y1)
4062 bounds.y1=point.y;
4063 if (point.x > bounds.x2)
4064 bounds.x2=point.x;
4065 if (point.y > bounds.y2)
4066 bounds.y2=point.y;
4067 }
4068 /*
4069 Speculate how many points our primitive might consume.
4070 */
4071 coordinates=(double) primitive_info[j].coordinates;
4072 switch (primitive_type)
4073 {
4074 case RectanglePrimitive:
4075 {
4076 coordinates*=5.0;
4077 break;
4078 }
4079 case RoundRectanglePrimitive:
4080 {
4081 double
4082 alpha,
4083 beta,
4084 radius;
4085
4086 alpha=bounds.x2-bounds.x1;
4087 beta=bounds.y2-bounds.y1;
4088 radius=hypot(alpha,beta);
4089 coordinates*=5.0;
4090 coordinates+=2.0*((size_t) ceil((double) MagickPI*radius))+6.0*
4091 BezierQuantum+360.0;
4092 break;
4093 }
4094 case BezierPrimitive:
4095 {
4096 coordinates=(BezierQuantum*(double) primitive_info[j].coordinates);
4097 break;
4098 }
4099 case PathPrimitive:
4100 {
4101 char
4102 *s,
4103 *t;
4104
4105 (void) GetNextToken(q,&q,extent,token);
4106 coordinates=1.0;
4107 t=token;
4108 for (s=token; *s != '\0'; s=t)
4109 {
4110 double
4111 value;
4112
4113 value=GetDrawValue(s,&t);
4114 (void) value;
4115 if (s == t)
4116 {
4117 t++;
4118 continue;
4119 }
4120 coordinates++;
4121 }
4122 for (s=token; *s != '\0'; s++)
4123 if (strspn(s,"AaCcQqSsTt") != 0)
4124 coordinates+=(20.0*BezierQuantum)+360.0;
4125 break;
4126 }
4127 default:
4128 break;
4129 }
4130 if (status == MagickFalse)
4131 break;
4132 if (((size_t) (i+coordinates)) >= number_points)
4133 {
4134 /*
4135 Resize based on speculative points required by primitive.
4136 */
4137 number_points+=coordinates+1;
4138 if (number_points < (size_t) coordinates)
4139 {
4140 (void) ThrowMagickException(&image->exception,GetMagickModule(),
4141 ResourceLimitError,"MemoryAllocationFailed","`%s'",
4142 image->filename);
4143 status=MagickFalse;
4144 break;
4145 }
4146 mvg_info.offset=i;
4147 status&=CheckPrimitiveExtent(&mvg_info,(double) number_points);
4148 primitive_info=(*mvg_info.primitive_info);
4149 }
4150 status&=CheckPrimitiveExtent(&mvg_info,PrimitiveExtentPad);
4151 primitive_info=(*mvg_info.primitive_info);
4152 if (status == MagickFalse)
4153 break;
4154 mvg_info.offset=j;
4155 switch (primitive_type)
4156 {
4157 case PointPrimitive:
4158 default:
4159 {
4160 if (primitive_info[j].coordinates != 1)
4161 {
4162 status=MagickFalse;
4163 break;
4164 }
4165 status&=TracePoint(primitive_info+j,primitive_info[j].point);
4166 primitive_info=(*mvg_info.primitive_info);
4167 i=(ssize_t) (j+primitive_info[j].coordinates);
4168 break;
4169 }
4170 case LinePrimitive:
4171 {
4172 if (primitive_info[j].coordinates != 2)
4173 {
4174 status=MagickFalse;
4175 break;
4176 }
4177 status&=TraceLine(primitive_info+j,primitive_info[j].point,
4178 primitive_info[j+1].point);
4179 primitive_info=(*mvg_info.primitive_info);
4180 i=(ssize_t) (j+primitive_info[j].coordinates);
4181 break;
4182 }
4183 case RectanglePrimitive:
4184 {
4185 if (primitive_info[j].coordinates != 2)
4186 {
4187 status=MagickFalse;
4188 break;
4189 }
4190 status&=TraceRectangle(primitive_info+j,primitive_info[j].point,
4191 primitive_info[j+1].point);
4192 primitive_info=(*mvg_info.primitive_info);
4193 i=(ssize_t) (j+primitive_info[j].coordinates);
4194 break;
4195 }
4196 case RoundRectanglePrimitive:
4197 {
4198 if (primitive_info[j].coordinates != 3)
4199 {
4200 status=MagickFalse;
4201 break;
4202 }
4203 if ((primitive_info[j+2].point.x < 0.0) ||
4204 (primitive_info[j+2].point.y < 0.0))
4205 {
4206 status=MagickFalse;
4207 break;
4208 }
4209 if ((primitive_info[j+1].point.x-primitive_info[j].point.x) < 0.0)
4210 {
4211 status=MagickFalse;
4212 break;
4213 }
4214 if ((primitive_info[j+1].point.y-primitive_info[j].point.y) < 0.0)
4215 {
4216 status=MagickFalse;
4217 break;
4218 }
4219 status&=TraceRoundRectangle(&mvg_info,primitive_info[j].point,
4220 primitive_info[j+1].point,primitive_info[j+2].point);
4221 primitive_info=(*mvg_info.primitive_info);
4222 i=(ssize_t) (j+primitive_info[j].coordinates);
4223 break;
4224 }
4225 case ArcPrimitive:
4226 {
4227 if (primitive_info[j].coordinates != 3)
4228 {
4229 status=MagickFalse;
4230 break;
4231 }
4232 status&=TraceArc(&mvg_info,primitive_info[j].point,
4233 primitive_info[j+1].point,primitive_info[j+2].point);
4234 primitive_info=(*mvg_info.primitive_info);
4235 i=(ssize_t) (j+primitive_info[j].coordinates);
4236 break;
4237 }
4238 case EllipsePrimitive:
4239 {
4240 if (primitive_info[j].coordinates != 3)
4241 {
4242 status=MagickFalse;
4243 break;
4244 }
4245 if ((primitive_info[j+1].point.x < 0.0) ||
4246 (primitive_info[j+1].point.y < 0.0))
4247 {
4248 status=MagickFalse;
4249 break;
4250 }
4251 status&=TraceEllipse(&mvg_info,primitive_info[j].point,
4252 primitive_info[j+1].point,primitive_info[j+2].point);
4253 primitive_info=(*mvg_info.primitive_info);
4254 i=(ssize_t) (j+primitive_info[j].coordinates);
4255 break;
4256 }
4257 case CirclePrimitive:
4258 {
4259 if (primitive_info[j].coordinates != 2)
4260 {
4261 status=MagickFalse;
4262 break;
4263 }
4264 status&=TraceCircle(&mvg_info,primitive_info[j].point,
4265 primitive_info[j+1].point);
4266 primitive_info=(*mvg_info.primitive_info);
4267 i=(ssize_t) (j+primitive_info[j].coordinates);
4268 break;
4269 }
4270 case PolylinePrimitive:
4271 {
4272 if (primitive_info[j].coordinates < 1)
4273 {
4274 status=MagickFalse;
4275 break;
4276 }
4277 break;
4278 }
4279 case PolygonPrimitive:
4280 {
4281 if (primitive_info[j].coordinates < 3)
4282 {
4283 status=MagickFalse;
4284 break;
4285 }
4286 primitive_info[i]=primitive_info[j];
4287 primitive_info[i].coordinates=0;
4288 primitive_info[j].coordinates++;
4289 primitive_info[j].closed_subpath=MagickTrue;
4290 i++;
4291 break;
4292 }
4293 case BezierPrimitive:
4294 {
4295 if (primitive_info[j].coordinates < 3)
4296 {
4297 status=MagickFalse;
4298 break;
4299 }
4300 status&=TraceBezier(&mvg_info,primitive_info[j].coordinates);
4301 primitive_info=(*mvg_info.primitive_info);
4302 i=(ssize_t) (j+primitive_info[j].coordinates);
4303 break;
4304 }
4305 case PathPrimitive:
4306 {
4307 coordinates=(double) TracePath(image,&mvg_info,token);
4308 primitive_info=(*mvg_info.primitive_info);
4309 if (coordinates < 0.0)
4310 {
4311 status=MagickFalse;
4312 break;
4313 }
4314 i=(ssize_t) (j+coordinates);
4315 break;
4316 }
4317 case ColorPrimitive:
4318 case MattePrimitive:
4319 {
4320 ssize_t
4321 method;
4322
4323 if (primitive_info[j].coordinates != 1)
4324 {
4325 status=MagickFalse;
4326 break;
4327 }
4328 (void) GetNextToken(q,&q,extent,token);
4329 method=ParseCommandOption(MagickMethodOptions,MagickFalse,token);
4330 if (method == -1)
4331 {
4332 status=MagickFalse;
4333 break;
4334 }
4335 primitive_info[j].method=(PaintMethod) method;
4336 break;
4337 }
4338 case TextPrimitive:
4339 {
4340 char
4341 geometry[MagickPathExtent];
4342
4343 if (primitive_info[j].coordinates != 1)
4344 {
4345 status=MagickFalse;
4346 break;
4347 }
4348 if (*token != ',')
4349 (void) GetNextToken(q,&q,extent,token);
4350 (void) CloneString(&primitive_info[j].text,token);
4351 /*
4352 Compute text cursor offset.
4353 */
4354 clone_info=CloneDrawInfo((ImageInfo *) NULL,graphic_context[n]);
4355 if ((fabs(mvg_info.point.x-primitive_info->point.x) < MagickEpsilon) &&
4356 (fabs(mvg_info.point.y-primitive_info->point.y) < MagickEpsilon))
4357 {
4358 mvg_info.point=primitive_info->point;
4359 primitive_info->point.x+=cursor;
4360 }
4361 else
4362 {
4363 mvg_info.point=primitive_info->point;
4364 cursor=0.0;
4365 }
4366 (void) FormatLocaleString(geometry,MagickPathExtent,"%+f%+f",
4367 primitive_info->point.x,primitive_info->point.y);
4368 clone_info->render=MagickFalse;
4369 clone_info->text=AcquireString(token);
4370 status&=GetTypeMetrics(image,clone_info,&metrics);
4371 clone_info=DestroyDrawInfo(clone_info);
4372 cursor+=metrics.width;
4373 if (graphic_context[n]->compliance != SVGCompliance)
4374 cursor=0.0;
4375 break;
4376 }
4377 case ImagePrimitive:
4378 {
4379 if (primitive_info[j].coordinates != 2)
4380 {
4381 status=MagickFalse;
4382 break;
4383 }
4384 (void) GetNextToken(q,&q,extent,token);
4385 (void) CloneString(&primitive_info[j].text,token);
4386 break;
4387 }
4388 }
4389 mvg_info.offset=i;
4390 if (status == 0)
4391 break;
4392 primitive_info[i].primitive=UndefinedPrimitive;
4393 if ((draw_info->debug != MagickFalse) && (q > p))
4394 (void) LogMagickEvent(DrawEvent,GetMagickModule()," %.*s",(int) (q-p),p);
4395 /*
4396 Sanity check.
4397 */
4398 status&=CheckPrimitiveExtent(&mvg_info,ExpandAffine(
4399 &graphic_context[n]->affine));
4400 primitive_info=(*mvg_info.primitive_info);
4401 if (status == 0)
4402 break;
4403 status&=CheckPrimitiveExtent(&mvg_info,(double)
4404 graphic_context[n]->stroke_width);
4405 primitive_info=(*mvg_info.primitive_info);
4406 if (status == 0)
4407 break;
4408 if (i == 0)
4409 continue;
4410 /*
4411 Transform points.
4412 */
4413 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
4414 {
4415 point=primitive_info[i].point;
4416 primitive_info[i].point.x=graphic_context[n]->affine.sx*point.x+
4417 graphic_context[n]->affine.ry*point.y+graphic_context[n]->affine.tx;
4418 primitive_info[i].point.y=graphic_context[n]->affine.rx*point.x+
4419 graphic_context[n]->affine.sy*point.y+graphic_context[n]->affine.ty;
4420 point=primitive_info[i].point;
4421 if (point.x < graphic_context[n]->bounds.x1)
4422 graphic_context[n]->bounds.x1=point.x;
4423 if (point.y < graphic_context[n]->bounds.y1)
4424 graphic_context[n]->bounds.y1=point.y;
4425 if (point.x > graphic_context[n]->bounds.x2)
4426 graphic_context[n]->bounds.x2=point.x;
4427 if (point.y > graphic_context[n]->bounds.y2)
4428 graphic_context[n]->bounds.y2=point.y;
4429 if (primitive_info[i].primitive == ImagePrimitive)
4430 break;
4431 if (i >= (ssize_t) number_points)
4432 ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed");
4433 }
4434 if (graphic_context[n]->render != MagickFalse)
4435 {
4436 if ((n != 0) && (graphic_context[n]->compliance != SVGCompliance) &&
4437 (graphic_context[n]->clip_mask != (char *) NULL) &&
4438 (LocaleCompare(graphic_context[n]->clip_mask,
4439 graphic_context[n-1]->clip_mask) != 0))
4440 {
4441 const char
4442 *clip_path;
4443
4444 clip_path=(const char *) GetValueFromSplayTree(macros,
4445 graphic_context[n]->clip_mask);
4446 if (clip_path != (const char *) NULL)
4447 (void) SetImageArtifact(image,graphic_context[n]->clip_mask,
4448 clip_path);
4449 status&=DrawClipPath(image,graphic_context[n],
4450 graphic_context[n]->clip_mask);
4451 }
4452 status&=DrawPrimitive(image,graphic_context[n],primitive_info);
4453 }
4454 proceed=SetImageProgress(image,RenderImageTag,q-primitive,(MagickSizeType)
4455 primitive_extent);
4456 if (proceed == MagickFalse)
4457 break;
4458 if (status == 0)
4459 break;
4460 }
4461 if (draw_info->debug != MagickFalse)
4462 (void) LogMagickEvent(DrawEvent,GetMagickModule(),"end draw-image");
4463 /*
4464 Relinquish resources.
4465 */
4466 macros=DestroySplayTree(macros);
4467 token=DestroyString(token);
4468 if (primitive_info != (PrimitiveInfo *) NULL)
4469 {
4470 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
4471 if (primitive_info[i].text != (char *) NULL)
4472 primitive_info[i].text=DestroyString(primitive_info[i].text);
4473 primitive_info=(PrimitiveInfo *) RelinquishMagickMemory(primitive_info);
4474 }
4475 primitive=DestroyString(primitive);
4476 for ( ; n >= 0; n--)
4477 graphic_context[n]=DestroyDrawInfo(graphic_context[n]);
4478 graphic_context=(DrawInfo **) RelinquishMagickMemory(graphic_context);
4479 if (status == MagickFalse)
4480 ThrowBinaryImageException(DrawError,
4481 "NonconformingDrawingPrimitiveDefinition",keyword);
4482 return(status != 0 ? MagickTrue : MagickFalse);
4483}
4484
4485MagickExport MagickBooleanType DrawImage(Image *image,const DrawInfo *draw_info)
4486{
4487 return(RenderMVGContent(image,draw_info,0));
4488}
4489␌
4490/*
4491%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4492% %
4493% %
4494% %
4495% D r a w P a t t e r n P a t h %
4496% %
4497% %
4498% %
4499%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4500%
4501% DrawPatternPath() draws a pattern.
4502%
4503% The format of the DrawPatternPath method is:
4504%
4505% MagickBooleanType DrawPatternPath(Image *image,const DrawInfo *draw_info,
4506% const char *name,Image **pattern)
4507%
4508% A description of each parameter follows:
4509%
4510% o image: the image.
4511%
4512% o draw_info: the draw info.
4513%
4514% o name: the pattern name.
4515%
4516% o image: the image.
4517%
4518*/
4519MagickExport MagickBooleanType DrawPatternPath(Image *image,
4520 const DrawInfo *draw_info,const char *name,Image **pattern)
4521{
4522 char
4523 property[MaxTextExtent];
4524
4525 const char
4526 *geometry,
4527 *path,
4528 *type;
4529
4530 DrawInfo
4531 *clone_info;
4532
4533 ImageInfo
4534 *image_info;
4535
4536 MagickBooleanType
4537 status;
4538
4539 assert(image != (Image *) NULL);
4540 assert(image->signature == MagickCoreSignature);
4541 assert(draw_info != (const DrawInfo *) NULL);
4542 if (IsEventLogging() != MagickFalse)
4543 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
4544 assert(name != (const char *) NULL);
4545 (void) FormatLocaleString(property,MaxTextExtent,"%s",name);
4546 path=GetImageArtifact(image,property);
4547 if (path == (const char *) NULL)
4548 return(MagickFalse);
4549 (void) FormatLocaleString(property,MaxTextExtent,"%s-geometry",name);
4550 geometry=GetImageArtifact(image,property);
4551 if (geometry == (const char *) NULL)
4552 return(MagickFalse);
4553 if ((*pattern) != (Image *) NULL)
4554 *pattern=DestroyImage(*pattern);
4555 image_info=AcquireImageInfo();
4556 image_info->size=AcquireString(geometry);
4557 *pattern=AcquireImage(image_info);
4558 image_info=DestroyImageInfo(image_info);
4559 (void) QueryColorDatabase("#00000000",&(*pattern)->background_color,
4560 &image->exception);
4561 (void) SetImageBackgroundColor(*pattern);
4562 if (draw_info->debug != MagickFalse)
4563 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
4564 "begin pattern-path %s %s",name,geometry);
4565 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
4566 if (clone_info->fill_pattern != (Image *) NULL)
4567 clone_info->fill_pattern=DestroyImage(clone_info->fill_pattern);
4568 if (clone_info->stroke_pattern != (Image *) NULL)
4569 clone_info->stroke_pattern=DestroyImage(clone_info->stroke_pattern);
4570 (void) FormatLocaleString(property,MaxTextExtent,"%s-type",name);
4571 type=GetImageArtifact(image,property);
4572 if (type != (const char *) NULL)
4573 clone_info->gradient.type=(GradientType) ParseCommandOption(
4574 MagickGradientOptions,MagickFalse,type);
4575 (void) CloneString(&clone_info->primitive,path);
4576 status=RenderMVGContent(*pattern,clone_info,0);
4577 clone_info=DestroyDrawInfo(clone_info);
4578 if (draw_info->debug != MagickFalse)
4579 (void) LogMagickEvent(DrawEvent,GetMagickModule(),"end pattern-path");
4580 return(status);
4581}
4582␌
4583/*
4584%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4585% %
4586% %
4587% %
4588+ D r a w P o l y g o n P r i m i t i v e %
4589% %
4590% %
4591% %
4592%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4593%
4594% DrawPolygonPrimitive() draws a polygon on the image.
4595%
4596% The format of the DrawPolygonPrimitive method is:
4597%
4598% MagickBooleanType DrawPolygonPrimitive(Image *image,
4599% const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
4600%
4601% A description of each parameter follows:
4602%
4603% o image: the image.
4604%
4605% o draw_info: the draw info.
4606%
4607% o primitive_info: Specifies a pointer to a PrimitiveInfo structure.
4608%
4609*/
4610
4611static PolygonInfo **DestroyPolygonTLS(PolygonInfo **polygon_info)
4612{
4613 ssize_t
4614 i;
4615
4616 assert(polygon_info != (PolygonInfo **) NULL);
4617 for (i=0; i < (ssize_t) GetMagickResourceLimit(ThreadResource); i++)
4618 if (polygon_info[i] != (PolygonInfo *) NULL)
4619 polygon_info[i]=DestroyPolygonInfo(polygon_info[i]);
4620 polygon_info=(PolygonInfo **) RelinquishMagickMemory(polygon_info);
4621 return(polygon_info);
4622}
4623
4624static PolygonInfo **AcquirePolygonTLS(const DrawInfo *draw_info,
4625 const PrimitiveInfo *primitive_info,ExceptionInfo *exception)
4626{
4627 PathInfo
4628 *magick_restrict path_info;
4629
4630 PolygonInfo
4631 **polygon_info;
4632
4633 size_t
4634 number_threads;
4635
4636 number_threads=(size_t) GetMagickResourceLimit(ThreadResource);
4637 polygon_info=(PolygonInfo **) AcquireQuantumMemory(number_threads,
4638 sizeof(*polygon_info));
4639 if (polygon_info == (PolygonInfo **) NULL)
4640 {
4641 (void) ThrowMagickException(exception,GetMagickModule(),
4642 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4643 return((PolygonInfo **) NULL);
4644 }
4645 (void) memset(polygon_info,0,number_threads*sizeof(*polygon_info));
4646 path_info=ConvertPrimitiveToPath(draw_info,primitive_info,exception);
4647 if (path_info == (PathInfo *) NULL)
4648 return(DestroyPolygonTLS(polygon_info));
4649 polygon_info[0]=ConvertPathToPolygon(path_info,exception);
4650 if (polygon_info[0] == (PolygonInfo *) NULL)
4651 {
4652 (void) ThrowMagickException(exception,GetMagickModule(),
4653 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4654 return(DestroyPolygonTLS(polygon_info));
4655 }
4656 path_info=(PathInfo *) RelinquishMagickMemory(path_info);
4657 return(polygon_info);
4658}
4659
4660static MagickBooleanType AcquirePolygonEdgesTLS(PolygonInfo **polygon_info,
4661 const size_t number_threads,ExceptionInfo *exception)
4662{
4663 ssize_t
4664 i;
4665
4666 for (i=1; i < (ssize_t) number_threads; i++)
4667 {
4668 EdgeInfo
4669 *edge_info;
4670
4671 ssize_t
4672 j;
4673
4674 polygon_info[i]=(PolygonInfo *) AcquireMagickMemory(
4675 sizeof(*polygon_info[i]));
4676 if (polygon_info[i] == (PolygonInfo *) NULL)
4677 {
4678 (void) ThrowMagickException(exception,GetMagickModule(),
4679 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4680 return(MagickFalse);
4681 }
4682 polygon_info[i]->number_edges=0;
4683 edge_info=polygon_info[0]->edges;
4684 polygon_info[i]->edges=(EdgeInfo *) AcquireQuantumMemory(
4685 polygon_info[0]->number_edges,sizeof(*edge_info));
4686 if (polygon_info[i]->edges == (EdgeInfo *) NULL)
4687 {
4688 (void) ThrowMagickException(exception,GetMagickModule(),
4689 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4690 return(MagickFalse);
4691 }
4692 (void) memcpy(polygon_info[i]->edges,edge_info,
4693 polygon_info[0]->number_edges*sizeof(*edge_info));
4694 for (j=0; j < (ssize_t) polygon_info[i]->number_edges; j++)
4695 polygon_info[i]->edges[j].points=(PointInfo *) NULL;
4696 polygon_info[i]->number_edges=polygon_info[0]->number_edges;
4697 for (j=0; j < (ssize_t) polygon_info[i]->number_edges; j++)
4698 {
4699 edge_info=polygon_info[0]->edges+j;
4700 polygon_info[i]->edges[j].points=(PointInfo *) AcquireQuantumMemory(
4701 edge_info->number_points,sizeof(*edge_info));
4702 if (polygon_info[i]->edges[j].points == (PointInfo *) NULL)
4703 {
4704 (void) ThrowMagickException(exception,GetMagickModule(),
4705 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4706 return(MagickFalse);
4707 }
4708 (void) memcpy(polygon_info[i]->edges[j].points,edge_info->points,
4709 edge_info->number_points*sizeof(*edge_info->points));
4710 }
4711 }
4712 return(MagickTrue);
4713}
4714
4715static size_t DestroyEdge(PolygonInfo *polygon_info,const ssize_t edge)
4716{
4717 assert(edge < (ssize_t) polygon_info->number_edges);
4718 polygon_info->edges[edge].points=(PointInfo *) RelinquishMagickMemory(
4719 polygon_info->edges[edge].points);
4720 polygon_info->number_edges--;
4721 if (edge < (ssize_t) polygon_info->number_edges)
4722 (void) memmove(polygon_info->edges+edge,polygon_info->edges+edge+1,
4723 (size_t) (polygon_info->number_edges-edge)*sizeof(*polygon_info->edges));
4724 return(polygon_info->number_edges);
4725}
4726
4727static double GetOpacityPixel(PolygonInfo *polygon_info,const double mid,
4728 const MagickBooleanType fill,const FillRule fill_rule,const ssize_t x,
4729 const ssize_t y,double *stroke_opacity)
4730{
4731 double
4732 alpha,
4733 beta,
4734 distance,
4735 subpath_opacity;
4736
4737 PointInfo
4738 delta;
4739
4740 EdgeInfo
4741 *p;
4742
4743 const PointInfo
4744 *q;
4745
4746 ssize_t
4747 i;
4748
4749 ssize_t
4750 j,
4751 winding_number;
4752
4753 /*
4754 Compute fill & stroke opacity for this (x,y) point.
4755 */
4756 *stroke_opacity=0.0;
4757 subpath_opacity=0.0;
4758 p=polygon_info->edges;
4759 for (j=0; j < (ssize_t) polygon_info->number_edges; j++, p++)
4760 {
4761 if ((double) y <= (p->bounds.y1-mid-0.5))
4762 break;
4763 if ((double) y > (p->bounds.y2+mid+0.5))
4764 {
4765 p--;
4766 (void) DestroyEdge(polygon_info,j--);
4767 continue;
4768 }
4769 if (((double) x <= (p->bounds.x1-mid-0.5)) ||
4770 ((double) x > (p->bounds.x2+mid+0.5)))
4771 continue;
4772 i=(ssize_t) MagickMax((double) p->highwater,1.0);
4773 for ( ; i < (ssize_t) p->number_points; i++)
4774 {
4775 if ((double) y <= (p->points[i-1].y-mid-0.5))
4776 break;
4777 if ((double) y > (p->points[i].y+mid+0.5))
4778 continue;
4779 if (p->scanline != (double) y)
4780 {
4781 p->scanline=(double) y;
4782 p->highwater=(size_t) i;
4783 }
4784 /*
4785 Compute distance between a point and an edge.
4786 */
4787 q=p->points+i-1;
4788 delta.x=(q+1)->x-q->x;
4789 delta.y=(q+1)->y-q->y;
4790 beta=delta.x*(x-q->x)+delta.y*(y-q->y);
4791 if (beta <= 0.0)
4792 {
4793 delta.x=(double) x-q->x;
4794 delta.y=(double) y-q->y;
4795 distance=delta.x*delta.x+delta.y*delta.y;
4796 }
4797 else
4798 {
4799 alpha=delta.x*delta.x+delta.y*delta.y;
4800 if (beta >= alpha)
4801 {
4802 delta.x=(double) x-(q+1)->x;
4803 delta.y=(double) y-(q+1)->y;
4804 distance=delta.x*delta.x+delta.y*delta.y;
4805 }
4806 else
4807 {
4808 alpha=MagickSafeReciprocal(alpha);
4809 beta=delta.x*(y-q->y)-delta.y*(x-q->x);
4810 distance=alpha*beta*beta;
4811 }
4812 }
4813 /*
4814 Compute stroke & subpath opacity.
4815 */
4816 beta=0.0;
4817 if (p->ghostline == MagickFalse)
4818 {
4819 alpha=mid+0.5;
4820 if ((*stroke_opacity < 1.0) &&
4821 (distance <= ((alpha+0.25)*(alpha+0.25))))
4822 {
4823 alpha=mid-0.5;
4824 if (distance <= ((alpha+0.25)*(alpha+0.25)))
4825 *stroke_opacity=1.0;
4826 else
4827 {
4828 beta=1.0;
4829 if (fabs(distance-1.0) >= MagickEpsilon)
4830 beta=sqrt((double) distance);
4831 alpha=beta-mid-0.5;
4832 if (*stroke_opacity < ((alpha-0.25)*(alpha-0.25)))
4833 *stroke_opacity=(alpha-0.25)*(alpha-0.25);
4834 }
4835 }
4836 }
4837 if ((fill == MagickFalse) || (distance > 1.0) || (subpath_opacity >= 1.0))
4838 continue;
4839 if (distance <= 0.0)
4840 {
4841 subpath_opacity=1.0;
4842 continue;
4843 }
4844 if (distance > 1.0)
4845 continue;
4846 if (fabs(beta) < MagickEpsilon)
4847 {
4848 beta=1.0;
4849 if (fabs(distance-1.0) >= MagickEpsilon)
4850 beta=sqrt(distance);
4851 }
4852 alpha=beta-1.0;
4853 if (subpath_opacity < (alpha*alpha))
4854 subpath_opacity=alpha*alpha;
4855 }
4856 }
4857 /*
4858 Compute fill opacity.
4859 */
4860 if (fill == MagickFalse)
4861 return(0.0);
4862 if (subpath_opacity >= 1.0)
4863 return(1.0);
4864 /*
4865 Determine winding number.
4866 */
4867 winding_number=0;
4868 p=polygon_info->edges;
4869 for (j=0; j < (ssize_t) polygon_info->number_edges; j++, p++)
4870 {
4871 if ((double) y <= p->bounds.y1)
4872 break;
4873 if (((double) y > p->bounds.y2) || ((double) x <= p->bounds.x1))
4874 continue;
4875 if ((double) x > p->bounds.x2)
4876 {
4877 winding_number+=p->direction != 0 ? 1 : -1;
4878 continue;
4879 }
4880 i=(ssize_t) MagickMax((double) p->highwater,1.0);
4881 for ( ; i < (ssize_t) (p->number_points-1); i++)
4882 if ((double) y <= p->points[i].y)
4883 break;
4884 q=p->points+i-1;
4885 if ((((q+1)->x-q->x)*(y-q->y)) <= (((q+1)->y-q->y)*(x-q->x)))
4886 winding_number+=p->direction != 0 ? 1 : -1;
4887 }
4888 if (fill_rule != NonZeroRule)
4889 {
4890 if ((MagickAbsoluteValue(winding_number) & 0x01) != 0)
4891 return(1.0);
4892 }
4893 else
4894 if (MagickAbsoluteValue(winding_number) != 0)
4895 return(1.0);
4896 return(subpath_opacity);
4897}
4898
4899static MagickBooleanType DrawPolygonPrimitive(Image *image,
4900 const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
4901{
4902 typedef struct _ExtentInfo
4903 {
4904 ssize_t
4905 x1,
4906 y1,
4907 x2,
4908 y2;
4909 } ExtentInfo;
4910
4911 CacheView
4912 *image_view;
4913
4914 const char
4915 *artifact;
4916
4917 double
4918 mid;
4919
4920 ExceptionInfo
4921 *exception;
4922
4923 ExtentInfo
4924 poly_extent;
4925
4926 MagickBooleanType
4927 fill,
4928 status;
4929
4930 PolygonInfo
4931 **magick_restrict polygon_info;
4932
4933 EdgeInfo
4934 *p;
4935
4936 SegmentInfo
4937 bounds;
4938
4939 size_t
4940 number_threads = 1;
4941
4942 ssize_t
4943 i,
4944 y;
4945
4946 assert(image != (Image *) NULL);
4947 assert(image->signature == MagickCoreSignature);
4948 assert(draw_info != (DrawInfo *) NULL);
4949 assert(draw_info->signature == MagickCoreSignature);
4950 assert(primitive_info != (PrimitiveInfo *) NULL);
4951 if (IsEventLogging() != MagickFalse)
4952 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
4953 if (primitive_info->coordinates <= 1)
4954 return(MagickTrue);
4955 /*
4956 Compute bounding box.
4957 */
4958 polygon_info=AcquirePolygonTLS(draw_info,primitive_info,&image->exception);
4959 if (polygon_info == (PolygonInfo **) NULL)
4960 return(MagickFalse);
4961 if (draw_info->debug != MagickFalse)
4962 (void) LogMagickEvent(DrawEvent,GetMagickModule()," begin draw-polygon");
4963 fill=(primitive_info->method == FillToBorderMethod) ||
4964 (primitive_info->method == FloodfillMethod) ? MagickTrue : MagickFalse;
4965 mid=ExpandAffine(&draw_info->affine)*draw_info->stroke_width/2.0;
4966 bounds=polygon_info[0]->edges[0].bounds;
4967 artifact=GetImageArtifact(image,"draw:render-bounding-rectangles");
4968 if (IsStringTrue(artifact) != MagickFalse)
4969 (void) DrawBoundingRectangles(image,draw_info,polygon_info[0]);
4970 for (i=1; i < (ssize_t) polygon_info[0]->number_edges; i++)
4971 {
4972 p=polygon_info[0]->edges+i;
4973 if (p->bounds.x1 < bounds.x1)
4974 bounds.x1=p->bounds.x1;
4975 if (p->bounds.y1 < bounds.y1)
4976 bounds.y1=p->bounds.y1;
4977 if (p->bounds.x2 > bounds.x2)
4978 bounds.x2=p->bounds.x2;
4979 if (p->bounds.y2 > bounds.y2)
4980 bounds.y2=p->bounds.y2;
4981 }
4982 bounds.x1-=(mid+1.0);
4983 bounds.y1-=(mid+1.0);
4984 bounds.x2+=(mid+1.0);
4985 bounds.y2+=(mid+1.0);
4986 if ((bounds.x1 >= (double) image->columns) ||
4987 (bounds.y1 >= (double) image->rows) ||
4988 (bounds.x2 <= 0.0) || (bounds.y2 <= 0.0))
4989 {
4990 polygon_info=DestroyPolygonTLS(polygon_info);
4991 return(MagickTrue); /* virtual polygon */
4992 }
4993 bounds.x1=bounds.x1 < 0.0 ? 0.0 : bounds.x1 >= (double) image->columns-1.0 ?
4994 (double) image->columns-1.0 : bounds.x1;
4995 bounds.y1=bounds.y1 < 0.0 ? 0.0 : bounds.y1 >= (double) image->rows-1.0 ?
4996 (double) image->rows-1.0 : bounds.y1;
4997 bounds.x2=bounds.x2 < 0.0 ? 0.0 : bounds.x2 >= (double) image->columns-1.0 ?
4998 (double) image->columns-1.0 : bounds.x2;
4999 bounds.y2=bounds.y2 < 0.0 ? 0.0 : bounds.y2 >= (double) image->rows-1.0 ?
5000 (double) image->rows-1.0 : bounds.y2;
5001 poly_extent.x1=CastDoubleToLong(ceil(bounds.x1-0.5));
5002 poly_extent.y1=CastDoubleToLong(ceil(bounds.y1-0.5));
5003 poly_extent.x2=CastDoubleToLong(floor(bounds.x2+0.5));
5004 poly_extent.y2=CastDoubleToLong(floor(bounds.y2+0.5));
5005 number_threads=GetMagickNumberThreads(image,image,poly_extent.y2-
5006 poly_extent.y1+1,1);
5007 status=AcquirePolygonEdgesTLS(polygon_info,number_threads,&image->exception);
5008 if (status == MagickFalse)
5009 {
5010 polygon_info=DestroyPolygonTLS(polygon_info);
5011 return(status);
5012 }
5013 status=MagickTrue;
5014 exception=(&image->exception);
5015 image_view=AcquireAuthenticCacheView(image,exception);
5016 if ((primitive_info->coordinates == 1) ||
5017 (polygon_info[0]->number_edges == 0))
5018 {
5019 /*
5020 Draw point.
5021 */
5022#if defined(MAGICKCORE_OPENMP_SUPPORT)
5023 #pragma omp parallel for schedule(static) shared(status) \
5024 num_threads(number_threads)
5025#endif
5026 for (y=poly_extent.y1; y <= poly_extent.y2; y++)
5027 {
5028 MagickBooleanType
5029 sync;
5030
5031 PixelPacket
5032 *magick_restrict q;
5033
5034 ssize_t
5035 x;
5036
5037 if (status == MagickFalse)
5038 continue;
5039 x=poly_extent.x1;
5040 q=GetCacheViewAuthenticPixels(image_view,x,y,(size_t) (poly_extent.x2-
5041 x+1),1,exception);
5042 if (q == (PixelPacket *) NULL)
5043 {
5044 status=MagickFalse;
5045 continue;
5046 }
5047 for ( ; x <= poly_extent.x2; x++)
5048 {
5049 if ((x == CastDoubleToLong(ceil(primitive_info->point.x-0.5))) &&
5050 (y == CastDoubleToLong(ceil(primitive_info->point.y-0.5))))
5051 (void) GetFillColor(draw_info,x-poly_extent.x1,y-poly_extent.y1,q);
5052 q++;
5053 }
5054 sync=SyncCacheViewAuthenticPixels(image_view,exception);
5055 if (sync == MagickFalse)
5056 status=MagickFalse;
5057 }
5058 image_view=DestroyCacheView(image_view);
5059 polygon_info=DestroyPolygonTLS(polygon_info);
5060 if (draw_info->debug != MagickFalse)
5061 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5062 " end draw-polygon");
5063 return(status);
5064 }
5065 /*
5066 Draw polygon or line.
5067 */
5068 poly_extent.y1=CastDoubleToLong(ceil(bounds.y1-0.5));
5069 poly_extent.y2=CastDoubleToLong(floor(bounds.y2+0.5));
5070#if defined(MAGICKCORE_OPENMP_SUPPORT)
5071 #pragma omp parallel for schedule(static) shared(status) \
5072 num_threads(number_threads)
5073#endif
5074 for (y=poly_extent.y1; y <= poly_extent.y2; y++)
5075 {
5076 const int
5077 id = GetOpenMPThreadId();
5078
5079 PixelPacket
5080 fill_color,
5081 stroke_color;
5082
5083 PixelPacket
5084 *magick_restrict q;
5085
5086 ssize_t
5087 x;
5088
5089 if (status == MagickFalse)
5090 continue;
5091 q=GetCacheViewAuthenticPixels(image_view,poly_extent.x1,y,(size_t)
5092 (poly_extent.x2-poly_extent.x1+1),1,exception);
5093 if (q == (PixelPacket *) NULL)
5094 {
5095 status=MagickFalse;
5096 continue;
5097 }
5098 for (x=poly_extent.x1; x <= poly_extent.x2; x++)
5099 {
5100 double
5101 fill_opacity,
5102 stroke_opacity;
5103
5104 /*
5105 Fill and/or stroke.
5106 */
5107 fill_opacity=GetOpacityPixel(polygon_info[id],mid,fill,
5108 draw_info->fill_rule,x,y,&stroke_opacity);
5109 if (draw_info->stroke_antialias == MagickFalse)
5110 {
5111 fill_opacity=fill_opacity >= AntialiasThreshold ? 1.0 : 0.0;
5112 stroke_opacity=stroke_opacity >= AntialiasThreshold ? 1.0 : 0.0;
5113 }
5114 (void) GetFillColor(draw_info,x-poly_extent.x1,y-poly_extent.y1,
5115 &fill_color);
5116 fill_opacity=(double) ((MagickRealType) QuantumRange-fill_opacity*
5117 ((MagickRealType) QuantumRange-(MagickRealType) fill_color.opacity));
5118 MagickCompositeOver(&fill_color,(MagickRealType) fill_opacity,q,
5119 (MagickRealType) q->opacity,q);
5120 (void) GetStrokeColor(draw_info,x-poly_extent.x1,y-poly_extent.y1,
5121 &stroke_color);
5122 stroke_opacity=(double) ((MagickRealType) QuantumRange-stroke_opacity*
5123 ((MagickRealType) QuantumRange-(MagickRealType) stroke_color.opacity));
5124 MagickCompositeOver(&stroke_color,(MagickRealType) stroke_opacity,q,
5125 (MagickRealType) q->opacity,q);
5126 q++;
5127 }
5128 if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
5129 status=MagickFalse;
5130 }
5131 image_view=DestroyCacheView(image_view);
5132 polygon_info=DestroyPolygonTLS(polygon_info);
5133 if (draw_info->debug != MagickFalse)
5134 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end draw-polygon");
5135 return(status);
5136}
5137␌
5138/*
5139%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5140% %
5141% %
5142% %
5143% D r a w P r i m i t i v e %
5144% %
5145% %
5146% %
5147%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5148%
5149% DrawPrimitive() draws a primitive (line, rectangle, ellipse) on the image.
5150%
5151% The format of the DrawPrimitive method is:
5152%
5153% MagickBooleanType DrawPrimitive(Image *image,const DrawInfo *draw_info,
5154% PrimitiveInfo *primitive_info)
5155%
5156% A description of each parameter follows:
5157%
5158% o image: the image.
5159%
5160% o draw_info: the draw info.
5161%
5162% o primitive_info: Specifies a pointer to a PrimitiveInfo structure.
5163%
5164*/
5165static void LogPrimitiveInfo(const PrimitiveInfo *primitive_info)
5166{
5167 const char
5168 *methods[] =
5169 {
5170 "point",
5171 "replace",
5172 "floodfill",
5173 "filltoborder",
5174 "reset",
5175 "?"
5176 };
5177
5178 PointInfo
5179 p,
5180 q,
5181 point;
5182
5183 ssize_t
5184 i,
5185 x;
5186
5187 ssize_t
5188 coordinates,
5189 y;
5190
5191 x=CastDoubleToLong(ceil(primitive_info->point.x-0.5));
5192 y=CastDoubleToLong(ceil(primitive_info->point.y-0.5));
5193 switch (primitive_info->primitive)
5194 {
5195 case PointPrimitive:
5196 {
5197 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5198 "PointPrimitive %.20g,%.20g %s",(double) x,(double) y,
5199 methods[primitive_info->method]);
5200 return;
5201 }
5202 case ColorPrimitive:
5203 {
5204 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5205 "ColorPrimitive %.20g,%.20g %s",(double) x,(double) y,
5206 methods[primitive_info->method]);
5207 return;
5208 }
5209 case MattePrimitive:
5210 {
5211 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5212 "MattePrimitive %.20g,%.20g %s",(double) x,(double) y,
5213 methods[primitive_info->method]);
5214 return;
5215 }
5216 case TextPrimitive:
5217 {
5218 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5219 "TextPrimitive %.20g,%.20g",(double) x,(double) y);
5220 return;
5221 }
5222 case ImagePrimitive:
5223 {
5224 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5225 "ImagePrimitive %.20g,%.20g",(double) x,(double) y);
5226 return;
5227 }
5228 default:
5229 break;
5230 }
5231 coordinates=0;
5232 p=primitive_info[0].point;
5233 q.x=(-1.0);
5234 q.y=(-1.0);
5235 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
5236 {
5237 point=primitive_info[i].point;
5238 if (coordinates <= 0)
5239 {
5240 coordinates=(ssize_t) primitive_info[i].coordinates;
5241 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5242 " begin open (%.20g)",(double) coordinates);
5243 p=point;
5244 }
5245 point=primitive_info[i].point;
5246 if ((fabs(q.x-point.x) >= MagickEpsilon) ||
5247 (fabs(q.y-point.y) >= MagickEpsilon))
5248 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5249 " %.20g: %.18g,%.18g",(double) coordinates,point.x,point.y);
5250 else
5251 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5252 " %.20g: %g %g (duplicate)",(double) coordinates,point.x,point.y);
5253 q=point;
5254 coordinates--;
5255 if (coordinates > 0)
5256 continue;
5257 if ((fabs(p.x-point.x) >= MagickEpsilon) ||
5258 (fabs(p.y-point.y) >= MagickEpsilon))
5259 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end last (%.20g)",
5260 (double) coordinates);
5261 else
5262 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end open (%.20g)",
5263 (double) coordinates);
5264 }
5265}
5266
5267MagickExport MagickBooleanType DrawPrimitive(Image *image,
5268 const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
5269{
5270 CacheView
5271 *image_view;
5272
5273 ExceptionInfo
5274 *exception;
5275
5276 MagickStatusType
5277 status;
5278
5279 ssize_t
5280 i,
5281 x;
5282
5283 ssize_t
5284 y;
5285
5286 if (draw_info->debug != MagickFalse)
5287 {
5288 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5289 " begin draw-primitive");
5290 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5291 " affine: %g,%g,%g,%g,%g,%g",draw_info->affine.sx,
5292 draw_info->affine.rx,draw_info->affine.ry,draw_info->affine.sy,
5293 draw_info->affine.tx,draw_info->affine.ty);
5294 }
5295 exception=(&image->exception);
5296 status=MagickTrue;
5297 if ((IsGrayColorspace(image->colorspace) != MagickFalse) &&
5298 ((IsPixelGray(&draw_info->fill) == MagickFalse) ||
5299 (IsPixelGray(&draw_info->stroke) == MagickFalse)))
5300 status=SetImageColorspace(image,sRGBColorspace);
5301 if (draw_info->compliance == SVGCompliance)
5302 {
5303 status&=SetImageClipMask(image,draw_info->clipping_mask);
5304 status&=SetImageMask(image,draw_info->composite_mask);
5305 }
5306 x=CastDoubleToLong(ceil(primitive_info->point.x-0.5));
5307 y=CastDoubleToLong(ceil(primitive_info->point.y-0.5));
5308 image_view=AcquireAuthenticCacheView(image,exception);
5309 switch (primitive_info->primitive)
5310 {
5311 case ColorPrimitive:
5312 {
5313 switch (primitive_info->method)
5314 {
5315 case PointMethod:
5316 default:
5317 {
5318 PixelPacket
5319 *q;
5320
5321 q=GetCacheViewAuthenticPixels(image_view,x,y,1,1,exception);
5322 if (q == (PixelPacket *) NULL)
5323 break;
5324 (void) GetFillColor(draw_info,x,y,q);
5325 status&=SyncCacheViewAuthenticPixels(image_view,exception);
5326 break;
5327 }
5328 case ReplaceMethod:
5329 {
5330 PixelPacket
5331 target;
5332
5333 status&=GetOneCacheViewVirtualPixel(image_view,x,y,&target,exception);
5334 for (y=0; y < (ssize_t) image->rows; y++)
5335 {
5336 PixelPacket
5337 *magick_restrict q;
5338
5339 q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
5340 exception);
5341 if (q == (PixelPacket *) NULL)
5342 break;
5343 for (x=0; x < (ssize_t) image->columns; x++)
5344 {
5345 if (IsColorSimilar(image,q,&target) == MagickFalse)
5346 {
5347 q++;
5348 continue;
5349 }
5350 (void) GetFillColor(draw_info,x,y,q);
5351 q++;
5352 }
5353 status&=SyncCacheViewAuthenticPixels(image_view,exception);
5354 if (status == MagickFalse)
5355 break;
5356 }
5357 break;
5358 }
5359 case FloodfillMethod:
5360 case FillToBorderMethod:
5361 {
5362 MagickPixelPacket
5363 target;
5364
5365 status&=GetOneVirtualMagickPixel(image,x,y,&target,exception);
5366 if (primitive_info->method == FillToBorderMethod)
5367 {
5368 target.red=(MagickRealType) draw_info->border_color.red;
5369 target.green=(MagickRealType) draw_info->border_color.green;
5370 target.blue=(MagickRealType) draw_info->border_color.blue;
5371 }
5372 status&=FloodfillPaintImage(image,DefaultChannels,draw_info,&target,x,
5373 y,primitive_info->method == FloodfillMethod ? MagickFalse :
5374 MagickTrue);
5375 break;
5376 }
5377 case ResetMethod:
5378 {
5379 for (y=0; y < (ssize_t) image->rows; y++)
5380 {
5381 PixelPacket
5382 *magick_restrict q;
5383
5384 ssize_t
5385 x;
5386
5387 q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
5388 exception);
5389 if (q == (PixelPacket *) NULL)
5390 break;
5391 for (x=0; x < (ssize_t) image->columns; x++)
5392 {
5393 (void) GetFillColor(draw_info,x,y,q);
5394 q++;
5395 }
5396 status&=SyncCacheViewAuthenticPixels(image_view,exception);
5397 if (status == MagickFalse)
5398 break;
5399 }
5400 break;
5401 }
5402 }
5403 break;
5404 }
5405 case MattePrimitive:
5406 {
5407 if (image->matte == MagickFalse)
5408 status&=SetImageAlphaChannel(image,OpaqueAlphaChannel);
5409 switch (primitive_info->method)
5410 {
5411 case PointMethod:
5412 default:
5413 {
5414 PixelPacket
5415 pixel;
5416
5417 PixelPacket
5418 *q;
5419
5420 q=GetCacheViewAuthenticPixels(image_view,x,y,1,1,exception);
5421 if (q == (PixelPacket *) NULL)
5422 break;
5423 (void) GetFillColor(draw_info,x,y,&pixel);
5424 SetPixelOpacity(q,pixel.opacity);
5425 status&=SyncCacheViewAuthenticPixels(image_view,exception);
5426 break;
5427 }
5428 case ReplaceMethod:
5429 {
5430 PixelPacket
5431 pixel,
5432 target;
5433
5434 status&=GetOneCacheViewVirtualPixel(image_view,x,y,&target,exception);
5435 for (y=0; y < (ssize_t) image->rows; y++)
5436 {
5437 PixelPacket
5438 *magick_restrict q;
5439
5440 ssize_t
5441 x;
5442
5443 q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
5444 exception);
5445 if (q == (PixelPacket *) NULL)
5446 break;
5447 for (x=0; x < (ssize_t) image->columns; x++)
5448 {
5449 if (IsColorSimilar(image,q,&target) == MagickFalse)
5450 {
5451 q++;
5452 continue;
5453 }
5454 (void) GetFillColor(draw_info,x,y,&pixel);
5455 SetPixelOpacity(q,pixel.opacity);
5456 q++;
5457 }
5458 status&=SyncCacheViewAuthenticPixels(image_view,exception);
5459 if (status == MagickFalse)
5460 break;
5461 }
5462 break;
5463 }
5464 case FloodfillMethod:
5465 case FillToBorderMethod:
5466 {
5467 MagickPixelPacket
5468 target;
5469
5470 status&=GetOneVirtualMagickPixel(image,x,y,&target,exception);
5471 if (primitive_info->method == FillToBorderMethod)
5472 {
5473 target.red=(MagickRealType) draw_info->border_color.red;
5474 target.green=(MagickRealType) draw_info->border_color.green;
5475 target.blue=(MagickRealType) draw_info->border_color.blue;
5476 }
5477 status&=FloodfillPaintImage(image,OpacityChannel,draw_info,&target,x,
5478 y,primitive_info->method == FloodfillMethod ? MagickFalse :
5479 MagickTrue);
5480 break;
5481 }
5482 case ResetMethod:
5483 {
5484 PixelPacket
5485 pixel;
5486
5487 for (y=0; y < (ssize_t) image->rows; y++)
5488 {
5489 PixelPacket
5490 *magick_restrict q;
5491
5492 ssize_t
5493 x;
5494
5495 q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
5496 exception);
5497 if (q == (PixelPacket *) NULL)
5498 break;
5499 for (x=0; x < (ssize_t) image->columns; x++)
5500 {
5501 (void) GetFillColor(draw_info,x,y,&pixel);
5502 SetPixelOpacity(q,pixel.opacity);
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 ImagePrimitive:
5515 {
5516 AffineMatrix
5517 affine;
5518
5519 char
5520 composite_geometry[MaxTextExtent];
5521
5522 Image
5523 *composite_image,
5524 *composite_images;
5525
5526 ImageInfo
5527 *clone_info;
5528
5529 RectangleInfo
5530 geometry;
5531
5532 ssize_t
5533 x1,
5534 y1;
5535
5536 if (primitive_info->text == (char *) NULL)
5537 break;
5538 clone_info=AcquireImageInfo();
5539 composite_images=(Image *) NULL;
5540 if (LocaleNCompare(primitive_info->text,"data:",5) == 0)
5541 composite_images=ReadInlineImage(clone_info,primitive_info->text,
5542 &image->exception);
5543 else
5544 if (*primitive_info->text != '\0')
5545 {
5546 /*
5547 Read composite image.
5548 */
5549 (void) CopyMagickString(clone_info->filename,primitive_info->text,
5550 MagickPathExtent);
5551 (void) SetImageInfo(clone_info,1,exception);
5552 (void) CopyMagickString(clone_info->filename,primitive_info->text,
5553 MagickPathExtent);
5554 if (clone_info->size != (char *) NULL)
5555 clone_info->size=DestroyString(clone_info->size);
5556 if (clone_info->extract != (char *) NULL)
5557 clone_info->extract=DestroyString(clone_info->extract);
5558 if ((LocaleCompare(clone_info->magick,"ftp") != 0) &&
5559 (LocaleCompare(clone_info->magick,"http") != 0) &&
5560 (LocaleCompare(clone_info->magick,"https") != 0) &&
5561 (LocaleCompare(clone_info->magick,"mvg") != 0) &&
5562 (LocaleCompare(clone_info->magick,"vid") != 0))
5563 composite_images=ReadImage(clone_info,exception);
5564 else
5565 (void) ThrowMagickException(exception,GetMagickModule(),
5566 FileOpenError,"UnableToOpenFile","`%s'",clone_info->filename);
5567 }
5568 clone_info=DestroyImageInfo(clone_info);
5569 if (composite_images == (Image *) NULL)
5570 {
5571 status=0;
5572 break;
5573 }
5574 composite_image=RemoveFirstImageFromList(&composite_images);
5575 composite_images=DestroyImageList(composite_images);
5576 (void) SetImageProgressMonitor(composite_image,(MagickProgressMonitor)
5577 NULL,(void *) NULL);
5578 x1=CastDoubleToLong(ceil(primitive_info[1].point.x-0.5));
5579 y1=CastDoubleToLong(ceil(primitive_info[1].point.y-0.5));
5580 if (((x1 != 0L) && (x1 != (ssize_t) composite_image->columns)) ||
5581 ((y1 != 0L) && (y1 != (ssize_t) composite_image->rows)))
5582 {
5583 char
5584 geometry[MaxTextExtent];
5585
5586 /*
5587 Resize image.
5588 */
5589 (void) FormatLocaleString(geometry,MaxTextExtent,"%gx%g!",
5590 primitive_info[1].point.x,primitive_info[1].point.y);
5591 composite_image->filter=image->filter;
5592 status&=TransformImage(&composite_image,(char *) NULL,geometry);
5593 }
5594 if (composite_image->matte == MagickFalse)
5595 status&=SetImageAlphaChannel(composite_image,OpaqueAlphaChannel);
5596 if (draw_info->opacity != OpaqueOpacity)
5597 status&=SetImageOpacity(composite_image,draw_info->opacity);
5598 SetGeometry(image,&geometry);
5599 image->gravity=draw_info->gravity;
5600 geometry.x=x;
5601 geometry.y=y;
5602 (void) FormatLocaleString(composite_geometry,MaxTextExtent,
5603 "%.20gx%.20g%+.20g%+.20g",(double) composite_image->columns,(double)
5604 composite_image->rows,(double) geometry.x,(double) geometry.y);
5605 (void) ParseGravityGeometry(image,composite_geometry,&geometry,
5606 &image->exception);
5607 affine=draw_info->affine;
5608 affine.tx=(double) geometry.x;
5609 affine.ty=(double) geometry.y;
5610 composite_image->interpolate=image->interpolate;
5611 if ((draw_info->compose == OverCompositeOp) ||
5612 (draw_info->compose == SrcOverCompositeOp))
5613 status&=DrawAffineImage(image,composite_image,&affine);
5614 else
5615 status&=CompositeImage(image,draw_info->compose,composite_image,
5616 geometry.x,geometry.y);
5617 composite_image=DestroyImage(composite_image);
5618 break;
5619 }
5620 case PointPrimitive:
5621 {
5622 PixelPacket
5623 fill_color;
5624
5625 PixelPacket
5626 *q;
5627
5628 if ((y < 0) || (y >= (ssize_t) image->rows))
5629 break;
5630 if ((x < 0) || (x >= (ssize_t) image->columns))
5631 break;
5632 q=GetCacheViewAuthenticPixels(image_view,x,y,1,1,exception);
5633 if (q == (PixelPacket *) NULL)
5634 break;
5635 (void) GetFillColor(draw_info,x,y,&fill_color);
5636 MagickCompositeOver(&fill_color,(MagickRealType) fill_color.opacity,q,
5637 (MagickRealType) q->opacity,q);
5638 status&=SyncCacheViewAuthenticPixels(image_view,exception);
5639 break;
5640 }
5641 case TextPrimitive:
5642 {
5643 char
5644 geometry[MaxTextExtent];
5645
5646 DrawInfo
5647 *clone_info;
5648
5649 if (primitive_info->text == (char *) NULL)
5650 break;
5651 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
5652 (void) CloneString(&clone_info->text,primitive_info->text);
5653 (void) FormatLocaleString(geometry,MaxTextExtent,"%+f%+f",
5654 primitive_info->point.x,primitive_info->point.y);
5655 (void) CloneString(&clone_info->geometry,geometry);
5656 status&=AnnotateImage(image,clone_info);
5657 clone_info=DestroyDrawInfo(clone_info);
5658 break;
5659 }
5660 default:
5661 {
5662 double
5663 mid,
5664 scale;
5665
5666 DrawInfo
5667 *clone_info;
5668
5669 if (IsEventLogging() != MagickFalse)
5670 LogPrimitiveInfo(primitive_info);
5671 scale=ExpandAffine(&draw_info->affine);
5672 if ((draw_info->dash_pattern != (double *) NULL) &&
5673 (fabs(draw_info->dash_pattern[0]) >= MagickEpsilon) &&
5674 (fabs(scale*draw_info->stroke_width) >= MagickEpsilon) &&
5675 (draw_info->stroke.opacity != (Quantum) TransparentOpacity))
5676 {
5677 /*
5678 Draw dash polygon.
5679 */
5680 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
5681 clone_info->stroke_width=0.0;
5682 clone_info->stroke.opacity=(Quantum) TransparentOpacity;
5683 status&=DrawPolygonPrimitive(image,clone_info,primitive_info);
5684 clone_info=DestroyDrawInfo(clone_info);
5685 if (status != MagickFalse)
5686 status&=DrawDashPolygon(draw_info,primitive_info,image);
5687 break;
5688 }
5689 mid=ExpandAffine(&draw_info->affine)*draw_info->stroke_width/2.0;
5690 if ((mid > 1.0) &&
5691 ((draw_info->stroke.opacity != (Quantum) TransparentOpacity) ||
5692 (draw_info->stroke_pattern != (Image *) NULL)))
5693 {
5694 double
5695 x,
5696 y;
5697
5698 MagickBooleanType
5699 closed_path;
5700
5701 /*
5702 Draw strokes while respecting line cap/join attributes.
5703 */
5704 closed_path=primitive_info[0].closed_subpath;
5705 i=(ssize_t) primitive_info[0].coordinates;
5706 x=fabs(primitive_info[i-1].point.x-primitive_info[0].point.x);
5707 y=fabs(primitive_info[i-1].point.y-primitive_info[0].point.y);
5708 if ((x < MagickEpsilon) && (y < MagickEpsilon))
5709 closed_path=MagickTrue;
5710 if ((((draw_info->linecap == RoundCap) ||
5711 (closed_path != MagickFalse)) &&
5712 (draw_info->linejoin == RoundJoin)) ||
5713 (primitive_info[i].primitive != UndefinedPrimitive))
5714 {
5715 status&=DrawPolygonPrimitive(image,draw_info,primitive_info);
5716 break;
5717 }
5718 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
5719 clone_info->stroke_width=0.0;
5720 clone_info->stroke.opacity=(Quantum) TransparentOpacity;
5721 status&=DrawPolygonPrimitive(image,clone_info,primitive_info);
5722 clone_info=DestroyDrawInfo(clone_info);
5723 if (status != MagickFalse)
5724 status&=DrawStrokePolygon(image,draw_info,primitive_info);
5725 break;
5726 }
5727 status&=DrawPolygonPrimitive(image,draw_info,primitive_info);
5728 break;
5729 }
5730 }
5731 image_view=DestroyCacheView(image_view);
5732 if (draw_info->compliance == SVGCompliance)
5733 {
5734 status&=SetImageClipMask(image,(Image *) NULL);
5735 status&=SetImageMask(image,(Image *) NULL);
5736 }
5737 if (draw_info->debug != MagickFalse)
5738 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end draw-primitive");
5739 return(status != 0 ? MagickTrue : MagickFalse);
5740}
5741␌
5742/*
5743%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5744% %
5745% %
5746% %
5747+ D r a w S t r o k e P o l y g o n %
5748% %
5749% %
5750% %
5751%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5752%
5753% DrawStrokePolygon() draws a stroked polygon (line, rectangle, ellipse) on
5754% the image while respecting the line cap and join attributes.
5755%
5756% The format of the DrawStrokePolygon method is:
5757%
5758% MagickBooleanType DrawStrokePolygon(Image *image,
5759% const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
5760%
5761% A description of each parameter follows:
5762%
5763% o image: the image.
5764%
5765% o draw_info: the draw info.
5766%
5767% o primitive_info: Specifies a pointer to a PrimitiveInfo structure.
5768%
5769%
5770*/
5771
5772static MagickBooleanType DrawRoundLinecap(Image *image,
5773 const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
5774{
5775 PrimitiveInfo
5776 linecap[5];
5777
5778 ssize_t
5779 i;
5780
5781 if (primitive_info->coordinates < 1)
5782 return(MagickFalse);
5783 for (i=0; i < 4; i++)
5784 linecap[i]=(*primitive_info);
5785 linecap[0].coordinates=4;
5786 linecap[1].point.x+=2.0*MagickEpsilon;
5787 linecap[2].point.x+=2.0*MagickEpsilon;
5788 linecap[2].point.y+=2.0*MagickEpsilon;
5789 linecap[3].point.y+=2.0*MagickEpsilon;
5790 linecap[4].primitive=UndefinedPrimitive;
5791 return(DrawPolygonPrimitive(image,draw_info,linecap));
5792}
5793
5794static MagickBooleanType DrawStrokePolygon(Image *image,
5795 const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
5796{
5797 DrawInfo
5798 *clone_info;
5799
5800 MagickBooleanType
5801 closed_path;
5802
5803 MagickStatusType
5804 status;
5805
5806 PrimitiveInfo
5807 *stroke_polygon;
5808
5809 const PrimitiveInfo
5810 *p,
5811 *q;
5812
5813 /*
5814 Draw stroked polygon.
5815 */
5816 if (draw_info->debug != MagickFalse)
5817 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5818 " begin draw-stroke-polygon");
5819 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
5820 clone_info->fill=draw_info->stroke;
5821 if (clone_info->fill_pattern != (Image *) NULL)
5822 clone_info->fill_pattern=DestroyImage(clone_info->fill_pattern);
5823 if (clone_info->stroke_pattern != (Image *) NULL)
5824 clone_info->fill_pattern=CloneImage(clone_info->stroke_pattern,0,0,
5825 MagickTrue,&clone_info->stroke_pattern->exception);
5826 clone_info->stroke.opacity=(Quantum) TransparentOpacity;
5827 clone_info->stroke_width=0.0;
5828 clone_info->fill_rule=NonZeroRule;
5829 status=MagickTrue;
5830 for (p=primitive_info; p->primitive != UndefinedPrimitive; p+=(ptrdiff_t) p->coordinates)
5831 {
5832 if (p->coordinates == 1)
5833 continue;
5834 stroke_polygon=TraceStrokePolygon(draw_info,p,&image->exception);
5835 if (stroke_polygon == (PrimitiveInfo *) NULL)
5836 {
5837 status=0;
5838 break;
5839 }
5840 status&=DrawPolygonPrimitive(image,clone_info,stroke_polygon);
5841 stroke_polygon=(PrimitiveInfo *) RelinquishMagickMemory(stroke_polygon);
5842 if (status == 0)
5843 break;
5844 q=p+p->coordinates-1;
5845 closed_path=p->closed_subpath;
5846 if ((draw_info->linecap == RoundCap) && (closed_path == MagickFalse))
5847 {
5848 status&=DrawRoundLinecap(image,draw_info,p);
5849 status&=DrawRoundLinecap(image,draw_info,q);
5850 }
5851 }
5852 clone_info=DestroyDrawInfo(clone_info);
5853 if (draw_info->debug != MagickFalse)
5854 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5855 " end draw-stroke-polygon");
5856 return(status != 0 ? MagickTrue : MagickFalse);
5857}
5858␌
5859/*
5860%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5861% %
5862% %
5863% %
5864% G e t A f f i n e M a t r i x %
5865% %
5866% %
5867% %
5868%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5869%
5870% GetAffineMatrix() returns an AffineMatrix initialized to the identity
5871% matrix.
5872%
5873% The format of the GetAffineMatrix method is:
5874%
5875% void GetAffineMatrix(AffineMatrix *affine_matrix)
5876%
5877% A description of each parameter follows:
5878%
5879% o affine_matrix: the affine matrix.
5880%
5881*/
5882MagickExport void GetAffineMatrix(AffineMatrix *affine_matrix)
5883{
5884 assert(affine_matrix != (AffineMatrix *) NULL);
5885 if (IsEventLogging() != MagickFalse)
5886 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
5887 (void) memset(affine_matrix,0,sizeof(*affine_matrix));
5888 affine_matrix->sx=1.0;
5889 affine_matrix->sy=1.0;
5890}
5891␌
5892/*
5893%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5894% %
5895% %
5896% %
5897+ G e t D r a w I n f o %
5898% %
5899% %
5900% %
5901%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5902%
5903% GetDrawInfo() initializes draw_info to default values from image_info.
5904%
5905% The format of the GetDrawInfo method is:
5906%
5907% void GetDrawInfo(const ImageInfo *image_info,DrawInfo *draw_info)
5908%
5909% A description of each parameter follows:
5910%
5911% o image_info: the image info..
5912%
5913% o draw_info: the draw info.
5914%
5915*/
5916MagickExport void GetDrawInfo(const ImageInfo *image_info,DrawInfo *draw_info)
5917{
5918 char
5919 *next_token;
5920
5921 const char
5922 *option;
5923
5924 ExceptionInfo
5925 *exception;
5926
5927 /*
5928 Initialize draw attributes.
5929 */
5930 assert(draw_info != (DrawInfo *) NULL);
5931 if (IsEventLogging() != MagickFalse)
5932 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
5933 (void) memset(draw_info,0,sizeof(*draw_info));
5934 draw_info->image_info=CloneImageInfo(image_info);
5935 GetAffineMatrix(&draw_info->affine);
5936 exception=AcquireExceptionInfo();
5937 (void) QueryColorDatabase("#000F",&draw_info->fill,exception);
5938 (void) QueryColorDatabase("#FFF0",&draw_info->stroke,exception);
5939 draw_info->stroke_antialias=draw_info->image_info->antialias;
5940 draw_info->stroke_width=1.0;
5941 draw_info->fill_rule=EvenOddRule;
5942 draw_info->opacity=OpaqueOpacity;
5943 draw_info->fill_opacity=OpaqueOpacity;
5944 draw_info->stroke_opacity=OpaqueOpacity;
5945 draw_info->linecap=ButtCap;
5946 draw_info->linejoin=MiterJoin;
5947 draw_info->miterlimit=10;
5948 draw_info->decorate=NoDecoration;
5949 if (draw_info->image_info->font != (char *) NULL)
5950 draw_info->font=AcquireString(draw_info->image_info->font);
5951 if (draw_info->image_info->density != (char *) NULL)
5952 draw_info->density=AcquireString(draw_info->image_info->density);
5953 draw_info->text_antialias=draw_info->image_info->antialias;
5954 draw_info->pointsize=12.0;
5955 if (fabs(draw_info->image_info->pointsize) >= MagickEpsilon)
5956 draw_info->pointsize=draw_info->image_info->pointsize;
5957 draw_info->undercolor.opacity=(Quantum) TransparentOpacity;
5958 draw_info->border_color=draw_info->image_info->border_color;
5959 draw_info->compose=OverCompositeOp;
5960 if (draw_info->image_info->server_name != (char *) NULL)
5961 draw_info->server_name=AcquireString(draw_info->image_info->server_name);
5962 draw_info->render=MagickTrue;
5963 draw_info->clip_path=MagickFalse;
5964 draw_info->debug=(GetLogEventMask() & (DrawEvent | AnnotateEvent)) != 0 ?
5965 MagickTrue : MagickFalse;
5966 option=GetImageOption(draw_info->image_info,"direction");
5967 if (option != (const char *) NULL)
5968 draw_info->direction=(DirectionType) ParseCommandOption(
5969 MagickDirectionOptions,MagickFalse,option);
5970 else
5971 draw_info->direction=UndefinedDirection;
5972 option=GetImageOption(draw_info->image_info,"encoding");
5973 if (option != (const char *) NULL)
5974 (void) CloneString(&draw_info->encoding,option);
5975 option=GetImageOption(draw_info->image_info,"family");
5976 if (option != (const char *) NULL)
5977 (void) CloneString(&draw_info->family,option);
5978 option=GetImageOption(draw_info->image_info,"fill");
5979 if (option != (const char *) NULL)
5980 (void) QueryColorDatabase(option,&draw_info->fill,exception);
5981 option=GetImageOption(draw_info->image_info,"gravity");
5982 if (option != (const char *) NULL)
5983 draw_info->gravity=(GravityType) ParseCommandOption(MagickGravityOptions,
5984 MagickFalse,option);
5985 option=GetImageOption(draw_info->image_info,"interline-spacing");
5986 if (option != (const char *) NULL)
5987 draw_info->interline_spacing=GetDrawValue(option,&next_token);
5988 option=GetImageOption(draw_info->image_info,"interword-spacing");
5989 if (option != (const char *) NULL)
5990 draw_info->interword_spacing=GetDrawValue(option,&next_token);
5991 option=GetImageOption(draw_info->image_info,"kerning");
5992 if (option != (const char *) NULL)
5993 draw_info->kerning=GetDrawValue(option,&next_token);
5994 option=GetImageOption(draw_info->image_info,"stroke");
5995 if (option != (const char *) NULL)
5996 (void) QueryColorDatabase(option,&draw_info->stroke,exception);
5997 option=GetImageOption(draw_info->image_info,"strokewidth");
5998 if (option != (const char *) NULL)
5999 draw_info->stroke_width=GetDrawValue(option,&next_token);
6000 option=GetImageOption(draw_info->image_info,"style");
6001 if (option != (const char *) NULL)
6002 draw_info->style=(StyleType) ParseCommandOption(MagickStyleOptions,
6003 MagickFalse,option);
6004 option=GetImageOption(draw_info->image_info,"undercolor");
6005 if (option != (const char *) NULL)
6006 (void) QueryColorDatabase(option,&draw_info->undercolor,exception);
6007 option=GetImageOption(draw_info->image_info,"weight");
6008 if (option != (const char *) NULL)
6009 {
6010 ssize_t
6011 weight;
6012
6013 weight=ParseCommandOption(MagickWeightOptions,MagickFalse,option);
6014 if (weight == -1)
6015 weight=(ssize_t) StringToUnsignedLong(option);
6016 draw_info->weight=(size_t) weight;
6017 }
6018 exception=DestroyExceptionInfo(exception);
6019 draw_info->signature=MagickCoreSignature;
6020}
6021␌
6022/*
6023%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6024% %
6025% %
6026% %
6027+ P e r m u t a t e %
6028% %
6029% %
6030% %
6031%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6032%
6033% Permutate() returns the permutation of the (n,k).
6034%
6035% The format of the Permutate method is:
6036%
6037% void Permutate(ssize_t n,ssize_t k)
6038%
6039% A description of each parameter follows:
6040%
6041% o n:
6042%
6043% o k:
6044%
6045%
6046*/
6047static inline double Permutate(const ssize_t n,const ssize_t k)
6048{
6049 double
6050 r;
6051
6052 ssize_t
6053 i;
6054
6055 r=1.0;
6056 for (i=k+1; i <= n; i++)
6057 r*=i;
6058 for (i=1; i <= (n-k); i++)
6059 r/=i;
6060 return(r);
6061}
6062␌
6063/*
6064%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6065% %
6066% %
6067% %
6068+ T r a c e P r i m i t i v e %
6069% %
6070% %
6071% %
6072%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6073%
6074% TracePrimitive is a collection of methods for generating graphic
6075% primitives such as arcs, ellipses, paths, etc.
6076%
6077*/
6078
6079static MagickBooleanType TraceArc(MVGInfo *mvg_info,const PointInfo start,
6080 const PointInfo end,const PointInfo degrees)
6081{
6082 PointInfo
6083 center,
6084 radius;
6085
6086 center.x=0.5*(end.x+start.x);
6087 center.y=0.5*(end.y+start.y);
6088 radius.x=fabs(center.x-start.x);
6089 radius.y=fabs(center.y-start.y);
6090 return(TraceEllipse(mvg_info,center,radius,degrees));
6091}
6092
6093static MagickBooleanType TraceArcPath(MVGInfo *mvg_info,const PointInfo start,
6094 const PointInfo end,const PointInfo arc,const double angle,
6095 const MagickBooleanType large_arc,const MagickBooleanType sweep)
6096{
6097 double
6098 alpha,
6099 beta,
6100 delta,
6101 factor,
6102 gamma,
6103 theta;
6104
6105 MagickStatusType
6106 status;
6107
6108 PointInfo
6109 center,
6110 points[3],
6111 radii;
6112
6113 double
6114 cosine,
6115 sine;
6116
6117 PrimitiveInfo
6118 *primitive_info;
6119
6120 PrimitiveInfo
6121 *p;
6122
6123 ssize_t
6124 i;
6125
6126 size_t
6127 arc_segments;
6128
6129 ssize_t
6130 offset;
6131
6132 offset=mvg_info->offset;
6133 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6134 primitive_info->coordinates=0;
6135 if ((fabs(start.x-end.x) < MagickEpsilon) &&
6136 (fabs(start.y-end.y) < MagickEpsilon))
6137 return(TracePoint(primitive_info,end));
6138 radii.x=fabs(arc.x);
6139 radii.y=fabs(arc.y);
6140 if ((radii.x < MagickEpsilon) || (radii.y < MagickEpsilon))
6141 return(TraceLine(primitive_info,start,end));
6142 cosine=cos(DegreesToRadians(fmod((double) angle,360.0)));
6143 sine=sin(DegreesToRadians(fmod((double) angle,360.0)));
6144 center.x=(double) (cosine*(end.x-start.x)/2+sine*(end.y-start.y)/2);
6145 center.y=(double) (cosine*(end.y-start.y)/2-sine*(end.x-start.x)/2);
6146 delta=(center.x*center.x)/(radii.x*radii.x)+(center.y*center.y)/
6147 (radii.y*radii.y);
6148 if (delta < MagickEpsilon)
6149 return(TraceLine(primitive_info,start,end));
6150 if (delta > 1.0)
6151 {
6152 radii.x*=sqrt((double) delta);
6153 radii.y*=sqrt((double) delta);
6154 }
6155 points[0].x=(double) (cosine*start.x/radii.x+sine*start.y/radii.x);
6156 points[0].y=(double) (cosine*start.y/radii.y-sine*start.x/radii.y);
6157 points[1].x=(double) (cosine*end.x/radii.x+sine*end.y/radii.x);
6158 points[1].y=(double) (cosine*end.y/radii.y-sine*end.x/radii.y);
6159 alpha=points[1].x-points[0].x;
6160 beta=points[1].y-points[0].y;
6161 if (fabs(alpha*alpha+beta*beta) < MagickEpsilon)
6162 return(TraceLine(primitive_info,start,end));
6163 factor=MagickSafeReciprocal(alpha*alpha+beta*beta)-0.25;
6164 if (factor <= 0.0)
6165 factor=0.0;
6166 else
6167 {
6168 factor=sqrt((double) factor);
6169 if (sweep == large_arc)
6170 factor=(-factor);
6171 }
6172 center.x=(double) ((points[0].x+points[1].x)/2-factor*beta);
6173 center.y=(double) ((points[0].y+points[1].y)/2+factor*alpha);
6174 alpha=atan2(points[0].y-center.y,points[0].x-center.x);
6175 theta=atan2(points[1].y-center.y,points[1].x-center.x)-alpha;
6176 if ((theta < 0.0) && (sweep != MagickFalse))
6177 theta+=2.0*MagickPI;
6178 else
6179 if ((theta > 0.0) && (sweep == MagickFalse))
6180 theta-=2.0*MagickPI;
6181 arc_segments=(size_t) CastDoubleToLong(ceil(fabs((double) (theta/(0.5*
6182 MagickPI+MagickEpsilon)))));
6183 p=primitive_info;
6184 status=MagickTrue;
6185 for (i=0; i < (ssize_t) arc_segments; i++)
6186 {
6187 beta=0.5*((alpha+(i+1)*theta/arc_segments)-(alpha+i*theta/arc_segments));
6188 gamma=(8.0/3.0)*sin(fmod((double) (0.5*beta),DegreesToRadians(360.0)))*
6189 sin(fmod((double) (0.5*beta),DegreesToRadians(360.0)))/
6190 sin(fmod((double) beta,DegreesToRadians(360.0)));
6191 points[0].x=(double) (center.x+cos(fmod((double) (alpha+(double) i*theta/
6192 arc_segments),DegreesToRadians(360.0)))-gamma*sin(fmod((double) (alpha+
6193 (double) i*theta/arc_segments),DegreesToRadians(360.0))));
6194 points[0].y=(double) (center.y+sin(fmod((double) (alpha+(double) i*theta/
6195 arc_segments),DegreesToRadians(360.0)))+gamma*cos(fmod((double) (alpha+
6196 (double) i*theta/arc_segments),DegreesToRadians(360.0))));
6197 points[2].x=(double) (center.x+cos(fmod((double) (alpha+(double) (i+1)*
6198 theta/arc_segments),DegreesToRadians(360.0))));
6199 points[2].y=(double) (center.y+sin(fmod((double) (alpha+(double) (i+1)*
6200 theta/arc_segments),DegreesToRadians(360.0))));
6201 points[1].x=(double) (points[2].x+gamma*sin(fmod((double) (alpha+(double)
6202 (i+1)*theta/arc_segments),DegreesToRadians(360.0))));
6203 points[1].y=(double) (points[2].y-gamma*cos(fmod((double) (alpha+(double)
6204 (i+1)*theta/arc_segments),DegreesToRadians(360.0))));
6205 p->point.x=(p == primitive_info) ? start.x : (p-1)->point.x;
6206 p->point.y=(p == primitive_info) ? start.y : (p-1)->point.y;
6207 (p+1)->point.x=(double) (cosine*radii.x*points[0].x-sine*radii.y*
6208 points[0].y);
6209 (p+1)->point.y=(double) (sine*radii.x*points[0].x+cosine*radii.y*
6210 points[0].y);
6211 (p+2)->point.x=(double) (cosine*radii.x*points[1].x-sine*radii.y*
6212 points[1].y);
6213 (p+2)->point.y=(double) (sine*radii.x*points[1].x+cosine*radii.y*
6214 points[1].y);
6215 (p+3)->point.x=(double) (cosine*radii.x*points[2].x-sine*radii.y*
6216 points[2].y);
6217 (p+3)->point.y=(double) (sine*radii.x*points[2].x+cosine*radii.y*
6218 points[2].y);
6219 if (i == (ssize_t) (arc_segments-1))
6220 (p+3)->point=end;
6221 status&=TraceBezier(mvg_info,4);
6222 if (status == 0)
6223 break;
6224 p=(*mvg_info->primitive_info)+(ptrdiff_t) mvg_info->offset;
6225 mvg_info->offset+=p->coordinates;
6226 p+=(ptrdiff_t) p->coordinates;
6227 }
6228 if (status == 0)
6229 return(MagickFalse);
6230 mvg_info->offset=offset;
6231 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6232 primitive_info->coordinates=(size_t) (p-primitive_info);
6233 primitive_info->closed_subpath=MagickFalse;
6234 for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
6235 {
6236 p->primitive=primitive_info->primitive;
6237 p--;
6238 }
6239 return(MagickTrue);
6240}
6241
6242static MagickBooleanType TraceBezier(MVGInfo *mvg_info,
6243 const size_t number_coordinates)
6244{
6245 double
6246 alpha,
6247 *coefficients,
6248 weight;
6249
6250 PointInfo
6251 end,
6252 point,
6253 *points;
6254
6255 PrimitiveInfo
6256 *primitive_info;
6257
6258 PrimitiveInfo
6259 *p;
6260
6261 ssize_t
6262 i,
6263 j;
6264
6265 size_t
6266 control_points,
6267 quantum;
6268
6269 /*
6270 Allocate coefficients.
6271 */
6272 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6273 quantum=number_coordinates;
6274 for (i=0; i < (ssize_t) number_coordinates; i++)
6275 {
6276 for (j=i+1; j < (ssize_t) number_coordinates; j++)
6277 {
6278 alpha=fabs(primitive_info[j].point.x-primitive_info[i].point.x);
6279 if (alpha > (double) GetMaxMemoryRequest())
6280 {
6281 (void) ThrowMagickException(mvg_info->exception,GetMagickModule(),
6282 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
6283 return(MagickFalse);
6284 }
6285 if (alpha > (double) quantum)
6286 quantum=(size_t) alpha;
6287 alpha=fabs(primitive_info[j].point.y-primitive_info[i].point.y);
6288 if (alpha > (double) quantum)
6289 quantum=(size_t) alpha;
6290 }
6291 }
6292 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6293 quantum=MagickMin(quantum/number_coordinates,BezierQuantum);
6294 if (quantum > (double) GetMaxMemoryRequest())
6295 {
6296 (void) ThrowMagickException(mvg_info->exception,GetMagickModule(),
6297 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
6298 return(MagickFalse);
6299 }
6300 coefficients=(double *) AcquireQuantumMemory(number_coordinates,
6301 sizeof(*coefficients));
6302 points=(PointInfo *) AcquireQuantumMemory(quantum,number_coordinates*
6303 sizeof(*points));
6304 if ((coefficients == (double *) NULL) || (points == (PointInfo *) NULL))
6305 {
6306 if (points != (PointInfo *) NULL)
6307 points=(PointInfo *) RelinquishMagickMemory(points);
6308 if (coefficients != (double *) NULL)
6309 coefficients=(double *) RelinquishMagickMemory(coefficients);
6310 (void) ThrowMagickException(mvg_info->exception,GetMagickModule(),
6311 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
6312 return(MagickFalse);
6313 }
6314 control_points=quantum*number_coordinates;
6315 if (CheckPrimitiveExtent(mvg_info,(double) control_points+1) == MagickFalse)
6316 {
6317 points=(PointInfo *) RelinquishMagickMemory(points);
6318 coefficients=(double *) RelinquishMagickMemory(coefficients);
6319 return(MagickFalse);
6320 }
6321 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6322 /*
6323 Compute bezier points.
6324 */
6325 end=primitive_info[number_coordinates-1].point;
6326 for (i=0; i < (ssize_t) number_coordinates; i++)
6327 coefficients[i]=Permutate((ssize_t) number_coordinates-1,i);
6328 weight=0.0;
6329 for (i=0; i < (ssize_t) control_points; i++)
6330 {
6331 p=primitive_info;
6332 point.x=0.0;
6333 point.y=0.0;
6334 alpha=pow((double) (1.0-weight),(double) number_coordinates-1.0);
6335 for (j=0; j < (ssize_t) number_coordinates; j++)
6336 {
6337 point.x+=alpha*coefficients[j]*p->point.x;
6338 point.y+=alpha*coefficients[j]*p->point.y;
6339 alpha*=weight/(1.0-weight);
6340 p++;
6341 }
6342 points[i]=point;
6343 weight+=1.0/control_points;
6344 }
6345 /*
6346 Bezier curves are just short segmented polys.
6347 */
6348 p=primitive_info;
6349 for (i=0; i < (ssize_t) control_points; i++)
6350 {
6351 if (TracePoint(p,points[i]) == MagickFalse)
6352 {
6353 points=(PointInfo *) RelinquishMagickMemory(points);
6354 coefficients=(double *) RelinquishMagickMemory(coefficients);
6355 return(MagickFalse);
6356 }
6357 p+=(ptrdiff_t) p->coordinates;
6358 }
6359 if (TracePoint(p,end) == MagickFalse)
6360 {
6361 points=(PointInfo *) RelinquishMagickMemory(points);
6362 coefficients=(double *) RelinquishMagickMemory(coefficients);
6363 return(MagickFalse);
6364 }
6365 p+=(ptrdiff_t) p->coordinates;
6366 primitive_info->coordinates=(size_t) (p-primitive_info);
6367 primitive_info->closed_subpath=MagickFalse;
6368 for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
6369 {
6370 p->primitive=primitive_info->primitive;
6371 p--;
6372 }
6373 points=(PointInfo *) RelinquishMagickMemory(points);
6374 coefficients=(double *) RelinquishMagickMemory(coefficients);
6375 return(MagickTrue);
6376}
6377
6378static MagickBooleanType TraceCircle(MVGInfo *mvg_info,const PointInfo start,
6379 const PointInfo end)
6380{
6381 double
6382 alpha,
6383 beta,
6384 radius;
6385
6386 PointInfo
6387 offset,
6388 degrees;
6389
6390 alpha=end.x-start.x;
6391 beta=end.y-start.y;
6392 radius=hypot((double) alpha,(double) beta);
6393 offset.x=(double) radius;
6394 offset.y=(double) radius;
6395 degrees.x=0.0;
6396 degrees.y=360.0;
6397 return(TraceEllipse(mvg_info,start,offset,degrees));
6398}
6399
6400static MagickBooleanType TraceEllipse(MVGInfo *mvg_info,const PointInfo center,
6401 const PointInfo radii,const PointInfo arc)
6402{
6403 double
6404 coordinates,
6405 delta,
6406 step,
6407 x,
6408 y;
6409
6410 PointInfo
6411 angle,
6412 point;
6413
6414 PrimitiveInfo
6415 *primitive_info;
6416
6417 PrimitiveInfo
6418 *p;
6419
6420 ssize_t
6421 i;
6422
6423 /*
6424 Ellipses are just short segmented polys.
6425 */
6426 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6427 primitive_info->coordinates=0;
6428 if ((fabs(radii.x) < MagickEpsilon) || (fabs(radii.y) < MagickEpsilon))
6429 return(MagickTrue);
6430 delta=MagickSafeReciprocal(MagickMax(radii.x,radii.y));
6431 step=MagickPI/(MagickPI*MagickSafeReciprocal(delta))/8.0;
6432 angle.x=DegreesToRadians(arc.x);
6433 y=arc.y;
6434 while (y < arc.x)
6435 y+=360.0;
6436 angle.y=DegreesToRadians(y);
6437 coordinates=ceil((angle.y-angle.x)/step+1.0);
6438 if (CheckPrimitiveExtent(mvg_info,coordinates+1) == MagickFalse)
6439 return(MagickFalse);
6440 i=0;
6441 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6442 for (p=primitive_info; angle.x < angle.y; angle.x+=step)
6443 {
6444 point.x=cos(fmod(angle.x,DegreesToRadians(360.0)))*radii.x+center.x;
6445 point.y=sin(fmod(angle.x,DegreesToRadians(360.0)))*radii.y+center.y;
6446 if (i++ >= (ssize_t) coordinates)
6447 break;
6448 if (TracePoint(p,point) == MagickFalse)
6449 return(MagickFalse);
6450 p+=(ptrdiff_t) p->coordinates;
6451 }
6452 point.x=cos(fmod(angle.y,DegreesToRadians(360.0)))*radii.x+center.x;
6453 point.y=sin(fmod(angle.y,DegreesToRadians(360.0)))*radii.y+center.y;
6454 if (TracePoint(p,point) == MagickFalse)
6455 return(MagickFalse);
6456 p+=(ptrdiff_t) p->coordinates;
6457 primitive_info->coordinates=(size_t) (p-primitive_info);
6458 primitive_info->closed_subpath=MagickFalse;
6459 x=fabs(primitive_info[0].point.x-
6460 primitive_info[primitive_info->coordinates-1].point.x);
6461 y=fabs(primitive_info[0].point.y-
6462 primitive_info[primitive_info->coordinates-1].point.y);
6463 if ((x < MagickEpsilon) && (y < MagickEpsilon))
6464 primitive_info->closed_subpath=MagickTrue;
6465 for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
6466 {
6467 p->primitive=primitive_info->primitive;
6468 p--;
6469 }
6470 return(MagickTrue);
6471}
6472
6473static MagickBooleanType TraceLine(PrimitiveInfo *primitive_info,
6474 const PointInfo start,const PointInfo end)
6475{
6476 if (TracePoint(primitive_info,start) == MagickFalse)
6477 return(MagickFalse);
6478 if (TracePoint(primitive_info+1,end) == MagickFalse)
6479 return(MagickFalse);
6480 (primitive_info+1)->primitive=primitive_info->primitive;
6481 primitive_info->coordinates=2;
6482 primitive_info->closed_subpath=MagickFalse;
6483 return(MagickTrue);
6484}
6485
6486static ssize_t TracePath(Image *image,MVGInfo *mvg_info,const char *path)
6487{
6488 char
6489 *next_token,
6490 token[MaxTextExtent] = "";
6491
6492 const char
6493 *p;
6494
6495 double
6496 x,
6497 y;
6498
6499 int
6500 attribute,
6501 last_attribute;
6502
6503 MagickStatusType
6504 status;
6505
6506 PointInfo
6507 end = {0.0, 0.0},
6508 points[4] = { {0.0, 0.0}, {0.0, 0.0}, {0.0, 0.0}, {0.0, 0.0} },
6509 point = {0.0, 0.0},
6510 start = {0.0, 0.0};
6511
6512 PrimitiveInfo
6513 *primitive_info;
6514
6515 PrimitiveType
6516 primitive_type;
6517
6518 PrimitiveInfo
6519 *q;
6520
6521 ssize_t
6522 i;
6523
6524 size_t
6525 number_coordinates,
6526 z_count;
6527
6528 ssize_t
6529 subpath_offset;
6530
6531 subpath_offset=mvg_info->offset;
6532 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6533 status=MagickTrue;
6534 attribute=0;
6535 number_coordinates=0;
6536 z_count=0;
6537 *token='\0';
6538 primitive_type=primitive_info->primitive;
6539 q=primitive_info;
6540 for (p=path; *p != '\0'; )
6541 {
6542 if (status == MagickFalse)
6543 break;
6544 while (isspace((int) ((unsigned char) *p)) != 0)
6545 p++;
6546 if (*p == '\0')
6547 break;
6548 last_attribute=attribute;
6549 attribute=(int) (*p++);
6550 switch (attribute)
6551 {
6552 case 'a':
6553 case 'A':
6554 {
6555 double
6556 angle = 0.0;
6557
6558 MagickBooleanType
6559 large_arc = MagickFalse,
6560 sweep = MagickFalse;
6561
6562 PointInfo
6563 arc = {0.0, 0.0};
6564
6565 /*
6566 Elliptical arc.
6567 */
6568 do
6569 {
6570 (void) GetNextToken(p,&p,MaxTextExtent,token);
6571 if (*token == ',')
6572 (void) GetNextToken(p,&p,MaxTextExtent,token);
6573 arc.x=GetDrawValue(token,&next_token);
6574 if (token == next_token)
6575 ThrowPointExpectedException(image,token);
6576 (void) GetNextToken(p,&p,MaxTextExtent,token);
6577 if (*token == ',')
6578 (void) GetNextToken(p,&p,MaxTextExtent,token);
6579 arc.y=GetDrawValue(token,&next_token);
6580 if (token == next_token)
6581 ThrowPointExpectedException(image,token);
6582 (void) GetNextToken(p,&p,MaxTextExtent,token);
6583 if (*token == ',')
6584 (void) GetNextToken(p,&p,MaxTextExtent,token);
6585 angle=GetDrawValue(token,&next_token);
6586 if (token == next_token)
6587 ThrowPointExpectedException(image,token);
6588 (void) GetNextToken(p,&p,MaxTextExtent,token);
6589 if (*token == ',')
6590 (void) GetNextToken(p,&p,MaxTextExtent,token);
6591 large_arc=StringToLong(token) != 0 ? MagickTrue : MagickFalse;
6592 (void) GetNextToken(p,&p,MaxTextExtent,token);
6593 if (*token == ',')
6594 (void) GetNextToken(p,&p,MaxTextExtent,token);
6595 sweep=StringToLong(token) != 0 ? MagickTrue : MagickFalse;
6596 if (*token == ',')
6597 (void) GetNextToken(p,&p,MaxTextExtent,token);
6598 (void) GetNextToken(p,&p,MaxTextExtent,token);
6599 if (*token == ',')
6600 (void) GetNextToken(p,&p,MaxTextExtent,token);
6601 x=GetDrawValue(token,&next_token);
6602 if (token == next_token)
6603 ThrowPointExpectedException(image,token);
6604 (void) GetNextToken(p,&p,MaxTextExtent,token);
6605 if (*token == ',')
6606 (void) GetNextToken(p,&p,MaxTextExtent,token);
6607 y=GetDrawValue(token,&next_token);
6608 if (token == next_token)
6609 ThrowPointExpectedException(image,token);
6610 end.x=(double) (attribute == (int) 'A' ? x : point.x+x);
6611 end.y=(double) (attribute == (int) 'A' ? y : point.y+y);
6612 status&=TraceArcPath(mvg_info,point,end,arc,angle,large_arc,sweep);
6613 q=(*mvg_info->primitive_info)+mvg_info->offset;
6614 mvg_info->offset+=q->coordinates;
6615 q+=(ptrdiff_t) q->coordinates;
6616 point=end;
6617 while (isspace((int) ((unsigned char) *p)) != 0)
6618 p++;
6619 if (*p == ',')
6620 p++;
6621 } while (IsPoint(p) != MagickFalse);
6622 break;
6623 }
6624 case 'c':
6625 case 'C':
6626 {
6627 /*
6628 Cubic Bézier curve.
6629 */
6630 do
6631 {
6632 points[0]=point;
6633 for (i=1; i < 4; i++)
6634 {
6635 (void) GetNextToken(p,&p,MaxTextExtent,token);
6636 if (*token == ',')
6637 (void) GetNextToken(p,&p,MaxTextExtent,token);
6638 x=GetDrawValue(token,&next_token);
6639 if (token == next_token)
6640 ThrowPointExpectedException(image,token);
6641 (void) GetNextToken(p,&p,MaxTextExtent,token);
6642 if (*token == ',')
6643 (void) GetNextToken(p,&p,MaxTextExtent,token);
6644 y=GetDrawValue(token,&next_token);
6645 if (token == next_token)
6646 ThrowPointExpectedException(image,token);
6647 end.x=(double) (attribute == (int) 'C' ? x : point.x+x);
6648 end.y=(double) (attribute == (int) 'C' ? y : point.y+y);
6649 points[i]=end;
6650 }
6651 for (i=0; i < 4; i++)
6652 (q+i)->point=points[i];
6653 if (TraceBezier(mvg_info,4) == MagickFalse)
6654 return(-1);
6655 q=(*mvg_info->primitive_info)+mvg_info->offset;
6656 mvg_info->offset+=q->coordinates;
6657 q+=(ptrdiff_t) q->coordinates;
6658 point=end;
6659 while (isspace((int) ((unsigned char) *p)) != 0)
6660 p++;
6661 if (*p == ',')
6662 p++;
6663 } while (IsPoint(p) != MagickFalse);
6664 break;
6665 }
6666 case 'H':
6667 case 'h':
6668 {
6669 do
6670 {
6671 (void) GetNextToken(p,&p,MaxTextExtent,token);
6672 if (*token == ',')
6673 (void) GetNextToken(p,&p,MaxTextExtent,token);
6674 x=GetDrawValue(token,&next_token);
6675 if (token == next_token)
6676 ThrowPointExpectedException(image,token);
6677 point.x=(double) (attribute == (int) 'H' ? x: point.x+x);
6678 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6679 return(-1);
6680 q=(*mvg_info->primitive_info)+mvg_info->offset;
6681 if (TracePoint(q,point) == MagickFalse)
6682 return(-1);
6683 mvg_info->offset+=q->coordinates;
6684 q+=(ptrdiff_t) q->coordinates;
6685 while (isspace((int) ((unsigned char) *p)) != 0)
6686 p++;
6687 if (*p == ',')
6688 p++;
6689 } while (IsPoint(p) != MagickFalse);
6690 break;
6691 }
6692 case 'l':
6693 case 'L':
6694 {
6695 /*
6696 Line to.
6697 */
6698 do
6699 {
6700 (void) GetNextToken(p,&p,MaxTextExtent,token);
6701 if (*token == ',')
6702 (void) GetNextToken(p,&p,MaxTextExtent,token);
6703 x=GetDrawValue(token,&next_token);
6704 if (token == next_token)
6705 ThrowPointExpectedException(image,token);
6706 (void) GetNextToken(p,&p,MaxTextExtent,token);
6707 if (*token == ',')
6708 (void) GetNextToken(p,&p,MaxTextExtent,token);
6709 y=GetDrawValue(token,&next_token);
6710 if (token == next_token)
6711 ThrowPointExpectedException(image,token);
6712 point.x=(double) (attribute == (int) 'L' ? x : point.x+x);
6713 point.y=(double) (attribute == (int) 'L' ? y : point.y+y);
6714 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6715 return(-1);
6716 q=(*mvg_info->primitive_info)+mvg_info->offset;
6717 if (TracePoint(q,point) == MagickFalse)
6718 return(-1);
6719 mvg_info->offset+=q->coordinates;
6720 q+=(ptrdiff_t) q->coordinates;
6721 while (isspace((int) ((unsigned char) *p)) != 0)
6722 p++;
6723 if (*p == ',')
6724 p++;
6725 } while (IsPoint(p) != MagickFalse);
6726 break;
6727 }
6728 case 'M':
6729 case 'm':
6730 {
6731 /*
6732 Move to.
6733 */
6734 if (mvg_info->offset != subpath_offset)
6735 {
6736 primitive_info=(*mvg_info->primitive_info)+subpath_offset;
6737 primitive_info->coordinates=(size_t) (q-primitive_info);
6738 number_coordinates+=primitive_info->coordinates;
6739 primitive_info=q;
6740 subpath_offset=mvg_info->offset;
6741 }
6742 i=0;
6743 do
6744 {
6745 (void) GetNextToken(p,&p,MaxTextExtent,token);
6746 if (*token == ',')
6747 (void) GetNextToken(p,&p,MaxTextExtent,token);
6748 x=GetDrawValue(token,&next_token);
6749 if (token == next_token)
6750 ThrowPointExpectedException(image,token);
6751 (void) GetNextToken(p,&p,MaxTextExtent,token);
6752 if (*token == ',')
6753 (void) GetNextToken(p,&p,MaxTextExtent,token);
6754 y=GetDrawValue(token,&next_token);
6755 if (token == next_token)
6756 ThrowPointExpectedException(image,token);
6757 point.x=(double) (attribute == (int) 'M' ? x : point.x+x);
6758 point.y=(double) (attribute == (int) 'M' ? y : point.y+y);
6759 if (i == 0)
6760 start=point;
6761 i++;
6762 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6763 return(-1);
6764 q=(*mvg_info->primitive_info)+mvg_info->offset;
6765 if (TracePoint(q,point) == MagickFalse)
6766 return(-1);
6767 mvg_info->offset+=q->coordinates;
6768 q+=(ptrdiff_t) q->coordinates;
6769 while (isspace((int) ((unsigned char) *p)) != 0)
6770 p++;
6771 if (*p == ',')
6772 p++;
6773 } while (IsPoint(p) != MagickFalse);
6774 break;
6775 }
6776 case 'q':
6777 case 'Q':
6778 {
6779 /*
6780 Quadratic Bézier curve.
6781 */
6782 do
6783 {
6784 points[0]=point;
6785 for (i=1; i < 3; i++)
6786 {
6787 (void) GetNextToken(p,&p,MaxTextExtent,token);
6788 if (*token == ',')
6789 (void) GetNextToken(p,&p,MaxTextExtent,token);
6790 x=GetDrawValue(token,&next_token);
6791 if (token == next_token)
6792 ThrowPointExpectedException(image,token);
6793 (void) GetNextToken(p,&p,MaxTextExtent,token);
6794 if (*token == ',')
6795 (void) GetNextToken(p,&p,MaxTextExtent,token);
6796 y=GetDrawValue(token,&next_token);
6797 if (token == next_token)
6798 ThrowPointExpectedException(image,token);
6799 if (*p == ',')
6800 p++;
6801 end.x=(double) (attribute == (int) 'Q' ? x : point.x+x);
6802 end.y=(double) (attribute == (int) 'Q' ? y : point.y+y);
6803 points[i]=end;
6804 }
6805 for (i=0; i < 3; i++)
6806 (q+i)->point=points[i];
6807 if (TraceBezier(mvg_info,3) == MagickFalse)
6808 return(-1);
6809 q=(*mvg_info->primitive_info)+mvg_info->offset;
6810 mvg_info->offset+=q->coordinates;
6811 q+=(ptrdiff_t) q->coordinates;
6812 point=end;
6813 while (isspace((int) ((unsigned char) *p)) != 0)
6814 p++;
6815 if (*p == ',')
6816 p++;
6817 } while (IsPoint(p) != MagickFalse);
6818 break;
6819 }
6820 case 's':
6821 case 'S':
6822 {
6823 /*
6824 Cubic Bézier curve.
6825 */
6826 do
6827 {
6828 points[0]=points[3];
6829 points[1].x=2.0*points[3].x-points[2].x;
6830 points[1].y=2.0*points[3].y-points[2].y;
6831 for (i=2; i < 4; i++)
6832 {
6833 (void) GetNextToken(p,&p,MaxTextExtent,token);
6834 if (*token == ',')
6835 (void) GetNextToken(p,&p,MaxTextExtent,token);
6836 x=GetDrawValue(token,&next_token);
6837 if (token == next_token)
6838 ThrowPointExpectedException(image,token);
6839 (void) GetNextToken(p,&p,MaxTextExtent,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 if (*p == ',')
6846 p++;
6847 end.x=(double) (attribute == (int) 'S' ? x : point.x+x);
6848 end.y=(double) (attribute == (int) 'S' ? y : point.y+y);
6849 points[i]=end;
6850 }
6851 if (strchr("CcSs",last_attribute) == (char *) NULL)
6852 {
6853 points[0]=point;
6854 points[1]=point;
6855 }
6856 for (i=0; i < 4; i++)
6857 (q+i)->point=points[i];
6858 if (TraceBezier(mvg_info,4) == MagickFalse)
6859 return(-1);
6860 q=(*mvg_info->primitive_info)+mvg_info->offset;
6861 mvg_info->offset+=q->coordinates;
6862 q+=(ptrdiff_t) q->coordinates;
6863 point=end;
6864 last_attribute=attribute;
6865 while (isspace((int) ((unsigned char) *p)) != 0)
6866 p++;
6867 if (*p == ',')
6868 p++;
6869 } while (IsPoint(p) != MagickFalse);
6870 break;
6871 }
6872 case 't':
6873 case 'T':
6874 {
6875 /*
6876 Quadratic Bézier curve.
6877 */
6878 do
6879 {
6880 points[0]=points[2];
6881 points[1].x=2.0*points[2].x-points[1].x;
6882 points[1].y=2.0*points[2].y-points[1].y;
6883 for (i=2; i < 3; i++)
6884 {
6885 (void) GetNextToken(p,&p,MaxTextExtent,token);
6886 if (*token == ',')
6887 (void) GetNextToken(p,&p,MaxTextExtent,token);
6888 x=GetDrawValue(token,&next_token);
6889 if (token == next_token)
6890 ThrowPointExpectedException(image,token);
6891 (void) GetNextToken(p,&p,MaxTextExtent,token);
6892 if (*token == ',')
6893 (void) GetNextToken(p,&p,MaxTextExtent,token);
6894 y=GetDrawValue(token,&next_token);
6895 if (token == next_token)
6896 ThrowPointExpectedException(image,token);
6897 end.x=(double) (attribute == (int) 'T' ? x : point.x+x);
6898 end.y=(double) (attribute == (int) 'T' ? y : point.y+y);
6899 points[i]=end;
6900 }
6901 if (status == MagickFalse)
6902 break;
6903 if (strchr("QqTt",last_attribute) == (char *) NULL)
6904 {
6905 points[0]=point;
6906 points[1]=point;
6907 }
6908 for (i=0; i < 3; i++)
6909 (q+i)->point=points[i];
6910 if (TraceBezier(mvg_info,3) == MagickFalse)
6911 return(-1);
6912 q=(*mvg_info->primitive_info)+mvg_info->offset;
6913 mvg_info->offset+=q->coordinates;
6914 q+=(ptrdiff_t) q->coordinates;
6915 point=end;
6916 last_attribute=attribute;
6917 while (isspace((int) ((unsigned char) *p)) != 0)
6918 p++;
6919 if (*p == ',')
6920 p++;
6921 } while (IsPoint(p) != MagickFalse);
6922 break;
6923 }
6924 case 'v':
6925 case 'V':
6926 {
6927 /*
6928 Line to.
6929 */
6930 do
6931 {
6932 (void) GetNextToken(p,&p,MaxTextExtent,token);
6933 if (*token == ',')
6934 (void) GetNextToken(p,&p,MaxTextExtent,token);
6935 y=GetDrawValue(token,&next_token);
6936 if (token == next_token)
6937 ThrowPointExpectedException(image,token);
6938 point.y=(double) (attribute == (int) 'V' ? y : point.y+y);
6939 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6940 return(-1);
6941 q=(*mvg_info->primitive_info)+mvg_info->offset;
6942 if (TracePoint(q,point) == MagickFalse)
6943 return(-1);
6944 mvg_info->offset+=q->coordinates;
6945 q+=(ptrdiff_t) q->coordinates;
6946 while (isspace((int) ((unsigned char) *p)) != 0)
6947 p++;
6948 if (*p == ',')
6949 p++;
6950 } while (IsPoint(p) != MagickFalse);
6951 break;
6952 }
6953 case 'z':
6954 case 'Z':
6955 {
6956 /*
6957 Close path.
6958 */
6959 point=start;
6960 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6961 return(-1);
6962 q=(*mvg_info->primitive_info)+mvg_info->offset;
6963 if (TracePoint(q,point) == MagickFalse)
6964 return(-1);
6965 mvg_info->offset+=q->coordinates;
6966 q+=(ptrdiff_t) q->coordinates;
6967 primitive_info=(*mvg_info->primitive_info)+subpath_offset;
6968 primitive_info->coordinates=(size_t) (q-primitive_info);
6969 primitive_info->closed_subpath=MagickTrue;
6970 number_coordinates+=primitive_info->coordinates;
6971 primitive_info=q;
6972 subpath_offset=mvg_info->offset;
6973 z_count++;
6974 break;
6975 }
6976 default:
6977 {
6978 ThrowPointExpectedException(image,token);
6979 break;
6980 }
6981 }
6982 }
6983 if (status == MagickFalse)
6984 return(-1);
6985 primitive_info=(*mvg_info->primitive_info)+subpath_offset;
6986 primitive_info->coordinates=(size_t) (q-primitive_info);
6987 number_coordinates+=primitive_info->coordinates;
6988 for (i=0; i < (ssize_t) number_coordinates; i++)
6989 {
6990 q--;
6991 q->primitive=primitive_type;
6992 if (z_count > 1)
6993 q->method=FillToBorderMethod;
6994 }
6995 q=primitive_info;
6996 return((ssize_t) number_coordinates);
6997}
6998
6999static MagickBooleanType TraceRectangle(PrimitiveInfo *primitive_info,
7000 const PointInfo start,const PointInfo end)
7001{
7002 PointInfo
7003 point;
7004
7005 PrimitiveInfo
7006 *p;
7007
7008 ssize_t
7009 i;
7010
7011 p=primitive_info;
7012 if (TracePoint(p,start) == MagickFalse)
7013 return(MagickFalse);
7014 p+=(ptrdiff_t) p->coordinates;
7015 point.x=start.x;
7016 point.y=end.y;
7017 if (TracePoint(p,point) == MagickFalse)
7018 return(MagickFalse);
7019 p+=(ptrdiff_t) p->coordinates;
7020 if (TracePoint(p,end) == MagickFalse)
7021 return(MagickFalse);
7022 p+=(ptrdiff_t) p->coordinates;
7023 point.x=end.x;
7024 point.y=start.y;
7025 if (TracePoint(p,point) == MagickFalse)
7026 return(MagickFalse);
7027 p+=(ptrdiff_t) p->coordinates;
7028 if (TracePoint(p,start) == MagickFalse)
7029 return(MagickFalse);
7030 p+=(ptrdiff_t) p->coordinates;
7031 primitive_info->coordinates=(size_t) (p-primitive_info);
7032 primitive_info->closed_subpath=MagickTrue;
7033 for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
7034 {
7035 p->primitive=primitive_info->primitive;
7036 p--;
7037 }
7038 return(MagickTrue);
7039}
7040
7041static MagickBooleanType TraceRoundRectangle(MVGInfo *mvg_info,
7042 const PointInfo start,const PointInfo end,PointInfo arc)
7043{
7044 PointInfo
7045 degrees,
7046 point,
7047 segment;
7048
7049 PrimitiveInfo
7050 *primitive_info;
7051
7052 PrimitiveInfo
7053 *p;
7054
7055 ssize_t
7056 i;
7057
7058 ssize_t
7059 offset;
7060
7061 offset=mvg_info->offset;
7062 segment.x=fabs(end.x-start.x);
7063 segment.y=fabs(end.y-start.y);
7064 if ((segment.x < MagickEpsilon) || (segment.y < MagickEpsilon))
7065 {
7066 (*mvg_info->primitive_info+mvg_info->offset)->coordinates=0;
7067 return(MagickTrue);
7068 }
7069 if (arc.x > (0.5*segment.x))
7070 arc.x=0.5*segment.x;
7071 if (arc.y > (0.5*segment.y))
7072 arc.y=0.5*segment.y;
7073 point.x=start.x+segment.x-arc.x;
7074 point.y=start.y+arc.y;
7075 degrees.x=270.0;
7076 degrees.y=360.0;
7077 if (TraceEllipse(mvg_info,point,arc,degrees) == MagickFalse)
7078 return(MagickFalse);
7079 p=(*mvg_info->primitive_info)+(ptrdiff_t) mvg_info->offset;
7080 mvg_info->offset+=p->coordinates;
7081 point.x=start.x+segment.x-arc.x;
7082 point.y=start.y+segment.y-arc.y;
7083 degrees.x=0.0;
7084 degrees.y=90.0;
7085 if (TraceEllipse(mvg_info,point,arc,degrees) == MagickFalse)
7086 return(MagickFalse);
7087 p=(*mvg_info->primitive_info)+(ptrdiff_t) mvg_info->offset;
7088 mvg_info->offset+=p->coordinates;
7089 point.x=start.x+arc.x;
7090 point.y=start.y+segment.y-arc.y;
7091 degrees.x=90.0;
7092 degrees.y=180.0;
7093 if (TraceEllipse(mvg_info,point,arc,degrees) == MagickFalse)
7094 return(MagickFalse);
7095 p=(*mvg_info->primitive_info)+(ptrdiff_t) mvg_info->offset;
7096 mvg_info->offset+=p->coordinates;
7097 point.x=start.x+arc.x;
7098 point.y=start.y+arc.y;
7099 degrees.x=180.0;
7100 degrees.y=270.0;
7101 if (TraceEllipse(mvg_info,point,arc,degrees) == MagickFalse)
7102 return(MagickFalse);
7103 p=(*mvg_info->primitive_info)+(ptrdiff_t) mvg_info->offset;
7104 mvg_info->offset+=p->coordinates;
7105 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
7106 return(MagickFalse);
7107 p=(*mvg_info->primitive_info)+(ptrdiff_t) mvg_info->offset;
7108 if (TracePoint(p,(*mvg_info->primitive_info+offset)->point) == MagickFalse)
7109 return(MagickFalse);
7110 p+=(ptrdiff_t) p->coordinates;
7111 mvg_info->offset=offset;
7112 primitive_info=(*mvg_info->primitive_info)+offset;
7113 primitive_info->coordinates=(size_t) (p-primitive_info);
7114 primitive_info->closed_subpath=MagickTrue;
7115 for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
7116 {
7117 p->primitive=primitive_info->primitive;
7118 p--;
7119 }
7120 return(MagickTrue);
7121}
7122
7123static MagickBooleanType TraceSquareLinecap(PrimitiveInfo *primitive_info,
7124 const size_t number_vertices,const double offset)
7125{
7126 double
7127 distance;
7128
7129 double
7130 dx,
7131 dy;
7132
7133 ssize_t
7134 i;
7135
7136 ssize_t
7137 j;
7138
7139 dx=0.0;
7140 dy=0.0;
7141 for (i=1; i < (ssize_t) number_vertices; i++)
7142 {
7143 dx=primitive_info[0].point.x-primitive_info[i].point.x;
7144 dy=primitive_info[0].point.y-primitive_info[i].point.y;
7145 if ((fabs((double) dx) >= MagickEpsilon) ||
7146 (fabs((double) dy) >= MagickEpsilon))
7147 break;
7148 }
7149 if (i == (ssize_t) number_vertices)
7150 i=(ssize_t) number_vertices-1L;
7151 distance=hypot((double) dx,(double) dy);
7152 primitive_info[0].point.x=(double) (primitive_info[i].point.x+
7153 dx*(distance+offset)/distance);
7154 primitive_info[0].point.y=(double) (primitive_info[i].point.y+
7155 dy*(distance+offset)/distance);
7156 for (j=(ssize_t) number_vertices-2; j >= 0; j--)
7157 {
7158 dx=primitive_info[number_vertices-1].point.x-primitive_info[j].point.x;
7159 dy=primitive_info[number_vertices-1].point.y-primitive_info[j].point.y;
7160 if ((fabs((double) dx) >= MagickEpsilon) ||
7161 (fabs((double) dy) >= MagickEpsilon))
7162 break;
7163 }
7164 distance=hypot((double) dx,(double) dy);
7165 primitive_info[number_vertices-1].point.x=(double) (primitive_info[j].point.x+
7166 dx*(distance+offset)/distance);
7167 primitive_info[number_vertices-1].point.y=(double) (primitive_info[j].point.y+
7168 dy*(distance+offset)/distance);
7169 return(MagickTrue);
7170}
7171
7172static PrimitiveInfo *TraceStrokePolygon(const DrawInfo *draw_info,
7173 const PrimitiveInfo *primitive_info,ExceptionInfo *exception)
7174{
7175#define MaxStrokePad (6*BezierQuantum+360)
7176#define CheckPathExtent(pad_p,pad_q) \
7177{ \
7178 if ((pad_p) > MaxBezierCoordinates) \
7179 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p); \
7180 else \
7181 if ((ssize_t) (p+(pad_p)) >= (ssize_t) extent_p) \
7182 { \
7183 if (~extent_p < (pad_p)) \
7184 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p); \
7185 else \
7186 { \
7187 extent_p+=(pad_p); \
7188 stroke_p=(PointInfo *) ResizeQuantumMemory(stroke_p,extent_p+ \
7189 MaxStrokePad,sizeof(*stroke_p)); \
7190 } \
7191 } \
7192 if ((pad_q) > MaxBezierCoordinates) \
7193 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q); \
7194 else \
7195 if ((ssize_t) (q+(pad_q)) >= (ssize_t) extent_q) \
7196 { \
7197 if (~extent_q < (pad_q)) \
7198 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q); \
7199 else \
7200 { \
7201 extent_q+=(pad_q); \
7202 stroke_q=(PointInfo *) ResizeQuantumMemory(stroke_q,extent_q+ \
7203 MaxStrokePad,sizeof(*stroke_q)); \
7204 } \
7205 } \
7206 if ((stroke_p == (PointInfo *) NULL) || (stroke_q == (PointInfo *) NULL)) \
7207 { \
7208 if (stroke_p != (PointInfo *) NULL) \
7209 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p); \
7210 if (stroke_q != (PointInfo *) NULL) \
7211 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q); \
7212 polygon_primitive=(PrimitiveInfo *) \
7213 RelinquishMagickMemory(polygon_primitive); \
7214 (void) ThrowMagickException(exception,GetMagickModule(), \
7215 ResourceLimitError,"MemoryAllocationFailed","`%s'",""); \
7216 return((PrimitiveInfo *) NULL); \
7217 } \
7218}
7219
7220 typedef struct _StrokeSegment
7221 {
7222 double
7223 p,
7224 q;
7225 } StrokeSegment;
7226
7227 double
7228 delta_theta,
7229 dot_product,
7230 mid,
7231 miterlimit;
7232
7233 MagickBooleanType
7234 closed_path;
7235
7236 PointInfo
7237 box_p[5],
7238 box_q[5],
7239 center,
7240 offset,
7241 *stroke_p,
7242 *stroke_q;
7243
7244 PrimitiveInfo
7245 *polygon_primitive,
7246 *stroke_polygon;
7247
7248 ssize_t
7249 i;
7250
7251 size_t
7252 arc_segments,
7253 extent_p,
7254 extent_q,
7255 number_vertices;
7256
7257 ssize_t
7258 j,
7259 n,
7260 p,
7261 q;
7262
7263 StrokeSegment
7264 dx = {0.0, 0.0},
7265 dy = {0.0, 0.0},
7266 inverse_slope = {0.0, 0.0},
7267 slope = {0.0, 0.0},
7268 theta = {0.0, 0.0};
7269
7270 /*
7271 Allocate paths.
7272 */
7273 number_vertices=primitive_info->coordinates;
7274 polygon_primitive=(PrimitiveInfo *) AcquireQuantumMemory((size_t)
7275 number_vertices+2UL,sizeof(*polygon_primitive));
7276 if (polygon_primitive == (PrimitiveInfo *) NULL)
7277 {
7278 (void) ThrowMagickException(exception,GetMagickModule(),
7279 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
7280 return((PrimitiveInfo *) NULL);
7281 }
7282 (void) memcpy(polygon_primitive,primitive_info,(size_t) number_vertices*
7283 sizeof(*polygon_primitive));
7284 offset.x=primitive_info[number_vertices-1].point.x-primitive_info[0].point.x;
7285 offset.y=primitive_info[number_vertices-1].point.y-primitive_info[0].point.y;
7286 closed_path=(fabs(offset.x) < MagickEpsilon) &&
7287 (fabs(offset.y) < MagickEpsilon) ? MagickTrue : MagickFalse;
7288 if ((draw_info->linejoin == MiterJoin) ||
7289 ((draw_info->linejoin == RoundJoin) && (closed_path != MagickFalse)))
7290 {
7291 polygon_primitive[number_vertices]=primitive_info[1];
7292 number_vertices++;
7293 }
7294 polygon_primitive[number_vertices].primitive=UndefinedPrimitive;
7295 /*
7296 Compute the slope for the first line segment, p.
7297 */
7298 closed_path=primitive_info[0].closed_subpath;
7299 dx.p=0.0;
7300 dy.p=0.0;
7301 for (n=1; n < (ssize_t) number_vertices; n++)
7302 {
7303 dx.p=polygon_primitive[n].point.x-polygon_primitive[0].point.x;
7304 dy.p=polygon_primitive[n].point.y-polygon_primitive[0].point.y;
7305 if ((fabs(dx.p) >= MagickEpsilon) || (fabs(dy.p) >= MagickEpsilon))
7306 break;
7307 }
7308 if (n == (ssize_t) number_vertices)
7309 {
7310 if ((draw_info->linecap != RoundCap) || (closed_path != MagickFalse))
7311 {
7312 /*
7313 Zero length subpath.
7314 */
7315 stroke_polygon=(PrimitiveInfo *) AcquireCriticalMemory(
7316 sizeof(*stroke_polygon));
7317 stroke_polygon[0]=polygon_primitive[0];
7318 stroke_polygon[0].coordinates=0;
7319 polygon_primitive=(PrimitiveInfo *) RelinquishMagickMemory(
7320 polygon_primitive);
7321 return(stroke_polygon);
7322 }
7323 n=(ssize_t) number_vertices-1L;
7324 }
7325 extent_p=2*number_vertices;
7326 extent_q=2*number_vertices;
7327 stroke_p=(PointInfo *) AcquireQuantumMemory((size_t) extent_p+MaxStrokePad,
7328 sizeof(*stroke_p));
7329 stroke_q=(PointInfo *) AcquireQuantumMemory((size_t) extent_q+MaxStrokePad,
7330 sizeof(*stroke_q));
7331 if ((stroke_p == (PointInfo *) NULL) || (stroke_q == (PointInfo *) NULL))
7332 {
7333 if (stroke_p != (PointInfo *) NULL)
7334 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p);
7335 if (stroke_q != (PointInfo *) NULL)
7336 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q);
7337 polygon_primitive=(PrimitiveInfo *)
7338 RelinquishMagickMemory(polygon_primitive);
7339 (void) ThrowMagickException(exception,GetMagickModule(),
7340 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
7341 return((PrimitiveInfo *) NULL);
7342 }
7343 slope.p=0.0;
7344 inverse_slope.p=0.0;
7345 if (fabs(dx.p) < MagickEpsilon)
7346 {
7347 if (dx.p >= 0.0)
7348 slope.p=dy.p < 0.0 ? -1.0/MagickEpsilon : 1.0/MagickEpsilon;
7349 else
7350 slope.p=dy.p < 0.0 ? 1.0/MagickEpsilon : -1.0/MagickEpsilon;
7351 }
7352 else
7353 if (fabs(dy.p) < MagickEpsilon)
7354 {
7355 if (dy.p >= 0.0)
7356 inverse_slope.p=dx.p < 0.0 ? -1.0/MagickEpsilon : 1.0/MagickEpsilon;
7357 else
7358 inverse_slope.p=dx.p < 0.0 ? 1.0/MagickEpsilon : -1.0/MagickEpsilon;
7359 }
7360 else
7361 {
7362 slope.p=dy.p/dx.p;
7363 inverse_slope.p=(-1.0*MagickSafeReciprocal(slope.p));
7364 }
7365 mid=ExpandAffine(&draw_info->affine)*draw_info->stroke_width/2.0;
7366 miterlimit=(double) (draw_info->miterlimit*draw_info->miterlimit*mid*mid);
7367 if ((draw_info->linecap == SquareCap) && (closed_path == MagickFalse))
7368 (void) TraceSquareLinecap(polygon_primitive,number_vertices,mid);
7369 offset.x=sqrt((double) (mid*mid/(inverse_slope.p*inverse_slope.p+1.0)));
7370 offset.y=(double) (offset.x*inverse_slope.p);
7371 if ((dy.p*offset.x-dx.p*offset.y) > 0.0)
7372 {
7373 box_p[0].x=polygon_primitive[0].point.x-offset.x;
7374 box_p[0].y=polygon_primitive[0].point.y-offset.x*inverse_slope.p;
7375 box_p[1].x=polygon_primitive[n].point.x-offset.x;
7376 box_p[1].y=polygon_primitive[n].point.y-offset.x*inverse_slope.p;
7377 box_q[0].x=polygon_primitive[0].point.x+offset.x;
7378 box_q[0].y=polygon_primitive[0].point.y+offset.x*inverse_slope.p;
7379 box_q[1].x=polygon_primitive[n].point.x+offset.x;
7380 box_q[1].y=polygon_primitive[n].point.y+offset.x*inverse_slope.p;
7381 }
7382 else
7383 {
7384 box_p[0].x=polygon_primitive[0].point.x+offset.x;
7385 box_p[0].y=polygon_primitive[0].point.y+offset.y;
7386 box_p[1].x=polygon_primitive[n].point.x+offset.x;
7387 box_p[1].y=polygon_primitive[n].point.y+offset.y;
7388 box_q[0].x=polygon_primitive[0].point.x-offset.x;
7389 box_q[0].y=polygon_primitive[0].point.y-offset.y;
7390 box_q[1].x=polygon_primitive[n].point.x-offset.x;
7391 box_q[1].y=polygon_primitive[n].point.y-offset.y;
7392 }
7393 /*
7394 Create strokes for the line join attribute: bevel, miter, round.
7395 */
7396 p=0;
7397 q=0;
7398 stroke_q[p++]=box_q[0];
7399 stroke_p[q++]=box_p[0];
7400 for (i=(ssize_t) n+1; i < (ssize_t) number_vertices; i++)
7401 {
7402 /*
7403 Compute the slope for this line segment, q.
7404 */
7405 dx.q=polygon_primitive[i].point.x-polygon_primitive[n].point.x;
7406 dy.q=polygon_primitive[i].point.y-polygon_primitive[n].point.y;
7407 dot_product=dx.q*dx.q+dy.q*dy.q;
7408 if (dot_product < 0.25)
7409 continue;
7410 slope.q=0.0;
7411 inverse_slope.q=0.0;
7412 if (fabs(dx.q) < MagickEpsilon)
7413 {
7414 if (dx.q >= 0.0)
7415 slope.q=dy.q < 0.0 ? -1.0/MagickEpsilon : 1.0/MagickEpsilon;
7416 else
7417 slope.q=dy.q < 0.0 ? 1.0/MagickEpsilon : -1.0/MagickEpsilon;
7418 }
7419 else
7420 if (fabs(dy.q) < MagickEpsilon)
7421 {
7422 if (dy.q >= 0.0)
7423 inverse_slope.q=dx.q < 0.0 ? -1.0/MagickEpsilon : 1.0/MagickEpsilon;
7424 else
7425 inverse_slope.q=dx.q < 0.0 ? 1.0/MagickEpsilon : -1.0/MagickEpsilon;
7426 }
7427 else
7428 {
7429 slope.q=dy.q/dx.q;
7430 inverse_slope.q=(-1.0*MagickSafeReciprocal(slope.q));
7431 }
7432 offset.x=sqrt((double) (mid*mid/(inverse_slope.q*inverse_slope.q+1.0)));
7433 offset.y=(double) (offset.x*inverse_slope.q);
7434 dot_product=dy.q*offset.x-dx.q*offset.y;
7435 if (dot_product > 0.0)
7436 {
7437 box_p[2].x=polygon_primitive[n].point.x-offset.x;
7438 box_p[2].y=polygon_primitive[n].point.y-offset.y;
7439 box_p[3].x=polygon_primitive[i].point.x-offset.x;
7440 box_p[3].y=polygon_primitive[i].point.y-offset.y;
7441 box_q[2].x=polygon_primitive[n].point.x+offset.x;
7442 box_q[2].y=polygon_primitive[n].point.y+offset.y;
7443 box_q[3].x=polygon_primitive[i].point.x+offset.x;
7444 box_q[3].y=polygon_primitive[i].point.y+offset.y;
7445 }
7446 else
7447 {
7448 box_p[2].x=polygon_primitive[n].point.x+offset.x;
7449 box_p[2].y=polygon_primitive[n].point.y+offset.y;
7450 box_p[3].x=polygon_primitive[i].point.x+offset.x;
7451 box_p[3].y=polygon_primitive[i].point.y+offset.y;
7452 box_q[2].x=polygon_primitive[n].point.x-offset.x;
7453 box_q[2].y=polygon_primitive[n].point.y-offset.y;
7454 box_q[3].x=polygon_primitive[i].point.x-offset.x;
7455 box_q[3].y=polygon_primitive[i].point.y-offset.y;
7456 }
7457 if (fabs((double) (slope.p-slope.q)) < MagickEpsilon)
7458 {
7459 box_p[4]=box_p[1];
7460 box_q[4]=box_q[1];
7461 }
7462 else
7463 {
7464 box_p[4].x=(double) ((slope.p*box_p[0].x-box_p[0].y-slope.q*box_p[3].x+
7465 box_p[3].y)/(slope.p-slope.q));
7466 box_p[4].y=(double) (slope.p*(box_p[4].x-box_p[0].x)+box_p[0].y);
7467 box_q[4].x=(double) ((slope.p*box_q[0].x-box_q[0].y-slope.q*box_q[3].x+
7468 box_q[3].y)/(slope.p-slope.q));
7469 box_q[4].y=(double) (slope.p*(box_q[4].x-box_q[0].x)+box_q[0].y);
7470 }
7471 CheckPathExtent(MaxStrokePad,MaxStrokePad);
7472 dot_product=dx.q*dy.p-dx.p*dy.q;
7473 if (dot_product <= 0.0)
7474 switch (draw_info->linejoin)
7475 {
7476 case BevelJoin:
7477 {
7478 stroke_q[q++]=box_q[1];
7479 stroke_q[q++]=box_q[2];
7480 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7481 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7482 if (dot_product <= miterlimit)
7483 stroke_p[p++]=box_p[4];
7484 else
7485 {
7486 stroke_p[p++]=box_p[1];
7487 stroke_p[p++]=box_p[2];
7488 }
7489 break;
7490 }
7491 case MiterJoin:
7492 {
7493 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7494 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7495 if (dot_product <= miterlimit)
7496 {
7497 stroke_q[q++]=box_q[4];
7498 stroke_p[p++]=box_p[4];
7499 }
7500 else
7501 {
7502 stroke_q[q++]=box_q[1];
7503 stroke_q[q++]=box_q[2];
7504 stroke_p[p++]=box_p[1];
7505 stroke_p[p++]=box_p[2];
7506 }
7507 break;
7508 }
7509 case RoundJoin:
7510 {
7511 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7512 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7513 if (dot_product <= miterlimit)
7514 stroke_p[p++]=box_p[4];
7515 else
7516 {
7517 stroke_p[p++]=box_p[1];
7518 stroke_p[p++]=box_p[2];
7519 }
7520 center=polygon_primitive[n].point;
7521 theta.p=atan2(box_q[1].y-center.y,box_q[1].x-center.x);
7522 theta.q=atan2(box_q[2].y-center.y,box_q[2].x-center.x);
7523 if (theta.q < theta.p)
7524 theta.q+=2.0*MagickPI;
7525 arc_segments=(size_t) CastDoubleToLong(ceil((double) ((theta.q-
7526 theta.p)/(2.0*sqrt(MagickSafeReciprocal(mid))))));
7527 CheckPathExtent(MaxStrokePad,arc_segments+MaxStrokePad);
7528 stroke_q[q].x=box_q[1].x;
7529 stroke_q[q].y=box_q[1].y;
7530 q++;
7531 for (j=1; j < (ssize_t) arc_segments; j++)
7532 {
7533 delta_theta=(double) (j*(theta.q-theta.p)/arc_segments);
7534 stroke_q[q].x=(double) (center.x+mid*cos(fmod((double)
7535 (theta.p+delta_theta),DegreesToRadians(360.0))));
7536 stroke_q[q].y=(double) (center.y+mid*sin(fmod((double)
7537 (theta.p+delta_theta),DegreesToRadians(360.0))));
7538 q++;
7539 }
7540 stroke_q[q++]=box_q[2];
7541 break;
7542 }
7543 default:
7544 break;
7545 }
7546 else
7547 switch (draw_info->linejoin)
7548 {
7549 case BevelJoin:
7550 {
7551 stroke_p[p++]=box_p[1];
7552 stroke_p[p++]=box_p[2];
7553 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7554 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7555 if (dot_product <= miterlimit)
7556 stroke_q[q++]=box_q[4];
7557 else
7558 {
7559 stroke_q[q++]=box_q[1];
7560 stroke_q[q++]=box_q[2];
7561 }
7562 break;
7563 }
7564 case MiterJoin:
7565 {
7566 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7567 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7568 if (dot_product <= miterlimit)
7569 {
7570 stroke_q[q++]=box_q[4];
7571 stroke_p[p++]=box_p[4];
7572 }
7573 else
7574 {
7575 stroke_q[q++]=box_q[1];
7576 stroke_q[q++]=box_q[2];
7577 stroke_p[p++]=box_p[1];
7578 stroke_p[p++]=box_p[2];
7579 }
7580 break;
7581 }
7582 case RoundJoin:
7583 {
7584 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7585 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7586 if (dot_product <= miterlimit)
7587 stroke_q[q++]=box_q[4];
7588 else
7589 {
7590 stroke_q[q++]=box_q[1];
7591 stroke_q[q++]=box_q[2];
7592 }
7593 center=polygon_primitive[n].point;
7594 theta.p=atan2(box_p[1].y-center.y,box_p[1].x-center.x);
7595 theta.q=atan2(box_p[2].y-center.y,box_p[2].x-center.x);
7596 if (theta.p < theta.q)
7597 theta.p+=2.0*MagickPI;
7598 arc_segments=(size_t) CastDoubleToLong(ceil((double) ((theta.p-
7599 theta.q)/(2.0*sqrt((double) (MagickSafeReciprocal(mid)))))));
7600 CheckPathExtent(arc_segments+MaxStrokePad,MaxStrokePad);
7601 stroke_p[p++]=box_p[1];
7602 for (j=1; j < (ssize_t) arc_segments; j++)
7603 {
7604 delta_theta=(double) (j*(theta.q-theta.p)/arc_segments);
7605 stroke_p[p].x=(double) (center.x+mid*cos(fmod((double)
7606 (theta.p+delta_theta),DegreesToRadians(360.0))));
7607 stroke_p[p].y=(double) (center.y+mid*sin(fmod((double)
7608 (theta.p+delta_theta),DegreesToRadians(360.0))));
7609 p++;
7610 }
7611 stroke_p[p++]=box_p[2];
7612 break;
7613 }
7614 default:
7615 break;
7616 }
7617 slope.p=slope.q;
7618 inverse_slope.p=inverse_slope.q;
7619 box_p[0]=box_p[2];
7620 box_p[1]=box_p[3];
7621 box_q[0]=box_q[2];
7622 box_q[1]=box_q[3];
7623 dx.p=dx.q;
7624 dy.p=dy.q;
7625 n=i;
7626 }
7627 stroke_p[p++]=box_p[1];
7628 stroke_q[q++]=box_q[1];
7629 /*
7630 Trace stroked polygon.
7631 */
7632 stroke_polygon=(PrimitiveInfo *) AcquireQuantumMemory((size_t)
7633 (p+q+2UL*closed_path+2UL),sizeof(*stroke_polygon));
7634 if (stroke_polygon == (PrimitiveInfo *) NULL)
7635 {
7636 (void) ThrowMagickException(exception,GetMagickModule(),
7637 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
7638 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p);
7639 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q);
7640 polygon_primitive=(PrimitiveInfo *) RelinquishMagickMemory(
7641 polygon_primitive);
7642 return(stroke_polygon);
7643 }
7644 for (i=0; i < (ssize_t) p; i++)
7645 {
7646 stroke_polygon[i]=polygon_primitive[0];
7647 stroke_polygon[i].point=stroke_p[i];
7648 }
7649 if (closed_path != MagickFalse)
7650 {
7651 stroke_polygon[i]=polygon_primitive[0];
7652 stroke_polygon[i].point=stroke_polygon[0].point;
7653 i++;
7654 }
7655 for ( ; i < (ssize_t) (p+q+closed_path); i++)
7656 {
7657 stroke_polygon[i]=polygon_primitive[0];
7658 stroke_polygon[i].point=stroke_q[p+q+closed_path-(i+1)];
7659 }
7660 if (closed_path != MagickFalse)
7661 {
7662 stroke_polygon[i]=polygon_primitive[0];
7663 stroke_polygon[i].point=stroke_polygon[p+closed_path].point;
7664 i++;
7665 }
7666 stroke_polygon[i]=polygon_primitive[0];
7667 stroke_polygon[i].point=stroke_polygon[0].point;
7668 i++;
7669 stroke_polygon[i].primitive=UndefinedPrimitive;
7670 stroke_polygon[0].coordinates=(size_t) (p+q+2*closed_path+1);
7671 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p);
7672 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q);
7673 polygon_primitive=(PrimitiveInfo *) RelinquishMagickMemory(polygon_primitive);
7674 return(stroke_polygon);
7675}
_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