graphene:matrix-untransform-point (matrix point bounds result)

matrix -- a graphene:matrix-t instance
point -- a graphene:point-t instance
bounds -- a graphene:rect-t instance
result -- a graphene:point-t instance

The graphene:point-t instance with the untransformed point, if sucessfully, otherwise nil.

Undoes the transformation of the point using the given matrix, within the given axis aligned rectangular bounds.