Defined in:Unitizes the weight of a 4D vector.
Unitizefunction multiplies a 4D vector by the inverse of its w coordinate, transforming it into a homogeneous point having a unit weight. If the w coordinate is zero, then the resulting x, y, and z coordinates are undefined. In all cases, the w coordinate is 1.0 when this function returns.
The return value is a reference to the vector object.