graphene:matrix-to-2d (matrix)

matrix -- a graphene:matrix-t instance
xx -- a double float for the xx member
yx -- a double float for the yx member
xy -- a double float for the xy member
yy -- a double float for the yy member
x0 -- a double float for the x0 member
y0 -- a double float for the y0 member

The list with the single floats, or nil if matrix is not compatible with an affine transformation matrix.

Converts the matrix to an affine transformation matrix, if the given matrix is compatible. The returned values have the following layout:

⎛ xx  yx ⎞   ⎛  a   b  0 ⎞
⎜ xy  yy ⎟ = ⎜  c   d  0 ⎟
⎝ x0  y0 ⎠   ⎝ tx  ty  1 ⎠  

This function can be used to convert between a graphene:matrix-t instance and an affine matrix type from other libraries.