Draw an Image in arbitrary corners

Question

So i have a normal image. I defined Click- and Drag-Listeners on each corner of the rectangular image. I want to freely transform each of the corners and paint it on the screen.

The AffineTransform class provides transformation possibilities but i couldn't find a way to realize this.

I have implemented the same function in android with the Matrix.setPolytoPoly method. However there is no equivalent in java swing.

Thanks!

Edit: I would like to illustrate this process with the following image:

This should happen when i drag one corner to the upper left. Now the problem that i have is, that i don't believe that one can model such a behaviour with a pure 3x3 matrix in an easy way. I looked at the android native code to watch the behaviour, but it's actually pretty deep in the native code.

Answer 1

Any idea of how to do that?

Your update shows that the transformation is not affine , as parallel lines do not remain parallel. Java Advanced Imaging (JAI) provides the required projective capabilities through the abstract class Warp .