//This file is automatically rebuilt by the Cesium build process.
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export default "/**\n\
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* Gets the color with fog at a distance from the camera.\n\
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*\n\
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* @name czm_fog\n\
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* @glslFunction\n\
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*\n\
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* @param {float} distanceToCamera The distance to the camera in meters.\n\
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* @param {vec3} color The original color.\n\
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* @param {vec3} fogColor The color of the fog.\n\
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*\n\
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* @returns {vec3} The color adjusted for fog at the distance from the camera.\n\
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*/\n\
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vec3 czm_fog(float distanceToCamera, vec3 color, vec3 fogColor)\n\
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{\n\
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float scalar = distanceToCamera * czm_fogDensity;\n\
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float fog = 1.0 - exp(-(scalar * scalar));\n\
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return mix(color, fogColor, fog);\n\
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}\n\
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\n\
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/**\n\
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* Gets the color with fog at a distance from the camera.\n\
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*\n\
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* @name czm_fog\n\
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* @glslFunction\n\
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*\n\
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* @param {float} distanceToCamera The distance to the camera in meters.\n\
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* @param {vec3} color The original color.\n\
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* @param {vec3} fogColor The color of the fog.\n\
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* @param {float} fogModifierConstant A constant to modify the appearance of fog.\n\
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*\n\
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* @returns {vec3} The color adjusted for fog at the distance from the camera.\n\
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*/\n\
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vec3 czm_fog(float distanceToCamera, vec3 color, vec3 fogColor, float fogModifierConstant)\n\
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{\n\
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float scalar = distanceToCamera * czm_fogDensity;\n\
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float fog = 1.0 - exp(-((fogModifierConstant * scalar + fogModifierConstant) * (scalar * (1.0 + fogModifierConstant))));\n\
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return mix(color, fogColor, fog);\n\
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}\n\
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";
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