gsk:transform-invert (transform)

transform -- a gsk:transform instance to invert

The gsk:transform instance with the inverted transform or nil if the transform cannot be inverted.

Inverts the given transform. If transform is not invertible, nil is returned. Note that inverting nil also returns nil, which is the correct inverse of nil. If you need to differentiate between those cases, you should check transform is not nil before calling this function.