czm_getSpecular
Calculates the specular intensity of reflected light.
Parameters:
| Name | Type | Description |
|---|---|---|
lightDirectionEC |
vec3 | Unit vector pointing to the light source in eye coordinates. |
toEyeEC |
vec3 | Unit vector pointing to the eye position in eye coordinates. |
normalEC |
vec3 | The surface normal in eye coordinates. |
shininess |
float | The sharpness of the specular reflection. Higher values create a smaller, more focused specular highlight. |
Returns:
float
The intensity of the specular highlight.
Example
float diffuseIntensity = czm_getLambertDiffuse(lightDirectionEC, normalEC); float specularIntensity = czm_getSpecular(lightDirectionEC, toEyeEC, normalEC, 200); vec3 color = (diffuseColor * diffuseIntensity) + (specularColor * specularIntensity);