The Clippingplane functionality needs some usability adjustments. Basically after talking with Marco we decided to realize the following changes:
- It should be possible to delete a existing clipping plane
- Some GUI elements are bad aligned, e.g. the label that lists the clipping planes and the selected image
- A save an load option for clipping planes would be nice
- The presentation of the clipping results should be improved
- The initialization of the clipping plane should also be able by specifying some points though which the plane should run. The plane then would have a thinplatesplinegeometry