text: //This file is automatically rebuilt by the Cesium build process.
  /*global define*/
  define(function() {
  "use strict";
  return "attribute vec2 direction;\n\
  varying vec2 v_textureCoordinates;\n\
  void main()\n\
  {\n\
  vec4 position;\n\
  if (czm_morphTime == 1.0)\n\
  {\n\
  position = vec4(czm_sunPositionWC, 1.0);\n\
  }\n\
  else\n\
  {\n\
  position = vec4(czm_sunPositionColumbusView.zxy, 1.0);\n\
  }\n\
  vec4 positionEC = czm_view * position;\n\
  vec4 positionWC = czm_eyeToWindowCoordinates(positionEC);\n\
  vec4 limb = czm_eyeToWindowCoordinates(positionEC + vec4(czm_solarRadius, 0.0, 0.0, 0.0));\n\
  vec2 halfSize = vec2(length(limb.xy - positionWC.xy));\n\
  halfSize *= 30.0;\n\
  halfSize *= ((direction * 2.0) - 1.0);\n\
  gl_Position = czm_viewportOrthographic * vec4(positionWC.xy + halfSize, -positionWC.z, 1.0);\n\
  v_textureCoordinates = direction;\n\
  }\n\
  ";
  });