The transformation used to transform this event from the global coordinate space into the coordinate space of the event receiver.
Unlike a paint transform, this transform usually does not contain any "perspective" components, meaning that the third row and the third column of the matrix should be equal to "0, 0, 1, 0". This ensures that localPosition describes the point in the local coordinate system of the event receiver at which the user is actually touching the screen.
- transformed, which transforms this event into a different coordinate space.
final Matrix4? transform;