Specs

transform_vector(mat44(), vec3()) :: vec3()

transform_vector( a, v ) transforms a vec3 vector by a mat44.

a is a mat44 used to transform the point.

v is a vec3 to be transformed.

This returns a vec3 representing the application of a to v.

The point a is internally treated as having a fourth coordinate equal to 0.0.

Note that transforming a vector will work for only rotations, scales, and shears.