public static void Multiplication3x3Test()
=> TrafoTesting.GenericMatrixMultiplicationTest <Affine3d, M33d, M34d>(
rnd => TrafoTesting.GetRandomAffine(rnd, false),
Affine.TransformPos,
Mat.Transform,
Mat.TransformPos,
(a, v) => (a * new V4d(v, 1)).XYZ,
(m, v) => m * v,
(m, v) => m * new V4d(v, 1));