[JAVA3D] fit ModelClip

[Olivier Tassy]

Hi, I have a Jslider(values 0 to 100%) wich performs a modelclipping for a set of objects in my scene. I want the clipping to start from the top point of the top object and finish to the bottom point of the bottom object. I can get the coords of both extremum by using BoundingBox'  getUpper and getLower methods (thank you Joachim), but I don't know how to set the plane equation for the ModelClip.   I tried with something like Vector4d eqn1 = new Vector4d(0.0, extremumPointTop , 0.0,  -JsliderValue * extremumPointTop  ); modelclip.setPlane(1, eqn1);   But it seems to be wrong.     Thanks for your help in advance.