//This file is automatically rebuilt by the Cesium build process.
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export default "/**\n\
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* Computes a value that scales with distance. The scaling is clamped at the near and\n\
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* far distances, and does not extrapolate. This function works with the\n\
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* {@link NearFarScalar} JavaScript class.\n\
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*\n\
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* @name czm_nearFarScalar\n\
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* @glslFunction\n\
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*\n\
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* @param {vec4} nearFarScalar A vector with 4 components: Near distance (x), Near value (y), Far distance (z), Far value (w).\n\
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* @param {float} cameraDistSq The square of the current distance from the camera.\n\
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*\n\
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* @returns {float} The value at this distance.\n\
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*/\n\
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float czm_nearFarScalar(vec4 nearFarScalar, float cameraDistSq)\n\
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{\n\
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float valueAtMin = nearFarScalar.y;\n\
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float valueAtMax = nearFarScalar.w;\n\
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float nearDistanceSq = nearFarScalar.x * nearFarScalar.x;\n\
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float farDistanceSq = nearFarScalar.z * nearFarScalar.z;\n\
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\n\
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float t = (cameraDistSq - nearDistanceSq) / (farDistanceSq - nearDistanceSq);\n\
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\n\
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t = pow(clamp(t, 0.0, 1.0), 0.2);\n\
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\n\
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return mix(valueAtMin, valueAtMax, t);\n\
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}\n\
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";
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