Function translation
Translation vector of the matrix
Example
Matrix4f tm = matrixf(
1.0f, 0.0f, 0.0f, 3.0f,
0.0f, 1.0f, 0.0f, 5.0f,
0.0f, 0.0f, 1.0f, 2.5f,
0.0f, 0.0f, 0.0f, 1.0f,
);
Vector3f t = translation(tm);
assert(t == Vector3f(3.0f, 5.0f, 2.5f));