Returns a new Affine object from 12 number values representing the 6 specifiable entries of the 3x4 Affine transformation matrix.

Parameters:

mxx     the X coordinate scaling element of the 3x4 matrix

myx     the Y coordinate shearing element of the 3x4 matrix

mxy     the X coordinate shearing element of the 3x4 matrix

myy     the Y coordinate scaling element of the 3x4 matrix

tx     the X coordinate translation element of the 3x4 matrix

ty     the Y coordinate translation element of the 3x4 matrix

Returns: a new Affine object derived from specified parameters

`mxx`		the X coordinate scaling element of the 3x4 matrix
`myx`		the Y coordinate shearing element of the 3x4 matrix
`mxy`		the X coordinate shearing element of the 3x4 matrix
`myy`		the Y coordinate scaling element of the 3x4 matrix
`tx`		the X coordinate translation element of the 3x4 matrix
`ty`		the Y coordinate translation element of the 3x4 matrix