Hello...

i am not able to understand the behaviour of my animation when using a
RotationInterpolator. My problem is the following:

When i use a RotationInterpolator whith max_angle=90*Math.PI/180 and
max_angle=60*Math.PI/180, i expect a certain geometry to rotate between 60
and 90 degrees ...

I have also an instance of Transform3D called "rotate". Here some code:

       rotate.rotZ(alpha)
       
       // Rotation fuer linken Oberarm setzen
       rotateUpperLeftArm = new TransformGroup(rotate);
       rotateUpperLeftArm.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);

       alpha=new Alpha(-1,3,0,0,1000,20,0,1000,400,0   );
       rotip=new RotationInterpolator(alpha,rotateUpperLeftArm,rotate, (float  
                                       (60*Math.PI/180),(float)(80*Math.PI/180 ));
       rotip.setSchedulingBounds(new BoundingSphere());        
               
       // "Rotationsinterpolator" an "Rotation LO" binden
       rotateUpperLeftArm.addChild(rotip);

I noticed when i use

 alpha = 0             : No rotation appears
 alpha = 60*Math.PI/180: It rotates and somehow seems to work correctly ...
 alpha = 10*Math.PI/180: It rotates with a very small angle ...

So can anybody give me an explanation ? How does rotate.rotZ(alpha)
influence the rotation in the animation which is handled by the
RotationInterpolator ?

bye
Dimitri