engine/src/core-data/Common/ShaderLib/Math.glsllib

/// Multiplies the vector by the quaternion, then returns the resultant vector.
vec3 Math_QuaternionMult(in vec4 quat, in vec3 vec){
	return vec + 2.0 * cross(quat.xyz, cross(quat.xyz, vec) + quat.w * vec);
}