Create a matrix out of vectors representing its rows.

Creates a 2D scaling matrix:

m =  Mat3.scale (vec2 2 3)


Mat3.transformPoint m (vec2 5 8) == vec2 10 24
Mat3.transformVector m (vec2 5 8) == vec2 10 24

Transforms clip space into viewport space.

--      Clip space
--
--                ^ +1
--                |
--                |
--                |
--   -1         y |           +1
--   <--------- (0,0) --------->
--                |  x
--                |
--                |
--                |
--                v -1
--
--
--
--
--
--      Viewport space
--                       width
--        (0,0)------------>
--          |
--          |
--          |
--          |
--          v
--        height
--
--

Transforms a point, applying scaling, rotation, and translation.

Transforms a vector, applying scaling and rotation, but not translation.

Transforms a general 3D vector.