Known:
1. Before the transformation of rectangle (x1, y1, w1, h1)
2. After the transformation of rectangle (x2, y2, w2, h2)
Through rectangular available
the coordinates of four points
O:
And after the transformation of rotation, scaling, oblique cutting numerical,

Can also be described,
Transformation matrix is known, but the transformation matrix has been after many rotation, scaling transformation, and the rotation of the decomposition of this matrix, oblique, zoom component, such as

Refer to the great god ~ ~ ~