Combine computing `size` and normalizing the matrix, invert the direction of `vec` to avoid negating it later, use `rescale_m4` instead of matrix multiplication to scale the final result. Differential Revision: https://developer.blender.org/D6134
Combine computing `size` and normalizing the matrix, invert the direction of `vec` to avoid negating it later, use `rescale_m4` instead of matrix multiplication to scale the final result. Differential Revision: https://developer.blender.org/D6134