..
  SPDX-License-Identifier: BSD-3-Clause
  Copyright Contributors to the OpenEXR Project.

WavyLinesLatLong.exr
####################

:download:`https://raw.githubusercontent.com/AcademySoftwareFoundation/openexr-images/main/MultiResolution/WavyLinesLatLong.exr<https://raw.githubusercontent.com/AcademySoftwareFoundation/openexr-images/main/MultiResolution/WavyLinesLatLong.exr>`

.. image:: https://raw.githubusercontent.com/AcademySoftwareFoundation/openexr-images/main/MultiResolution/WavyLinesLatLong.jpg
   :target: https://raw.githubusercontent.com/AcademySoftwareFoundation/openexr-images/main/MultiResolution/WavyLinesLatLong.exr


An environment map, in latitude-longitude format, that can be
used to test how an application program, for example, a 3D
renderer, handles the seams of environment maps.
The environment image contains multiple sets of wavy lines.
Each set consists of three parallel lines of equal width.
Parts of the middle line run along one of the map's seams,
crossing back and forth over the seam.  In a latitude-longitude
map, there is a seam along the meridian with longitude +/-pi.
If the environment map is correctly projected onto a sphere,
then the seams should be invisible, and all lines should appear
to have the same uniform width everywhere.  It should be
impossible or at least difficult to tell where the middle line
in each set crosses one of the map's seams.

.. list-table::
   :align: left

   * - envmap
     - latitude-longitude map
   * - screenWindowWidth
     - 1
   * - dataWindow
     - (0 0) - (1023 511)
   * - owner
     - Copyright 2005 Industrial Light & Magic
   * - screenWindowCenter
     - (0 0)
   * - displayWindow
     - (0 0) - (1023 511)
   * - tiles
     - mip-map, tile size 64 by 64 pixels, level sizes rounded down
   * - channels
     - B, G, R
   * - lineOrder
     - increasing y
   * - pixelAspectRatio
     - 1
   * - compression
     - zip, multi-scanline blocks
   * - type
     - tiledimage
