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Contents
/**
* Creates a matrix that transforms vectors from tangent space to eye space.
*
* @name czm_tangentToEyeSpaceMatrix
* @glslFunction
*
* @param {vec3} normalEC The normal vector in eye coordinates.
* @param {vec3} tangentEC The tangent vector in eye coordinates.
* @param {vec3} binormalEC The binormal vector in eye coordinates.
*
* @returns {mat3} The matrix that transforms from tangent space to eye space.
*
* @example
* mat3 tangentToEye = czm_tangentToEyeSpaceMatrix(normalEC, tangentEC, binormalEC);
* vec3 normal = tangentToEye * texture2D(normalMap, st).xyz;
*/
mat3 czm_tangentToEyeSpaceMatrix(vec3 normalEC, vec3 tangentEC, vec3 binormalEC)
{
vec3 normal = normalize(normalEC);
vec3 tangent = normalize(tangentEC);
vec3 binormal = normalize(binormalEC);
return mat3(tangent.x, tangent.y, tangent.z,
binormal.x, binormal.y, binormal.z,
normal.x, normal.y, normal.z);
}
Version data entries
12 entries across 12 versions & 1 rubygems