Copy	Return a copy of the PaintMatrix matrix.
Invert	Inverts a transformation matrix and returns it.
Map	Apply the PaintMatrix matrix to the Point point, and return the result.
Multiply	Multiplies the current matrix by the specified one, and returns it.
Reset	Resets a transformation matrix to the identity matrix, and returns it.
Rotate	Rotates a transformation matrix, and returns it.
Scale	Scales a transformation matrix, and returns it.
Translate	Translates a transformation matrix, and returns it.

Note that all methods returns the current matrix they applied on, so that you can easily chain calls on the same code line.