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Contents
/**
* Calculates the intensity of diffusely reflected light.
*
* @name czm_getLambertDiffuse
* @glslFunction
*
* @param {vec3} lightDirectionEC Unit vector pointing to the light source in eye coordinates.
* @param {vec3} normalEC The surface normal in eye coordinates.
*
* @returns {float} The intensity of the diffuse reflection.
*
* @see czm_phong
*
* @example
* float diffuseIntensity = czm_getLambertDiffuse(lightDirectionEC, normalEC);
* float specularIntensity = czm_getSpecular(lightDirectionEC, toEyeEC, normalEC, 200);
* vec3 color = (diffuseColor * diffuseIntensity) + (specularColor * specularIntensity);
*/
float czm_getLambertDiffuse(vec3 lightDirectionEC, vec3 normalEC)
{
return max(dot(lightDirectionEC, normalEC), 0.0);
}
Version data entries
11 entries across 11 versions & 1 rubygems