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folding · Guest

Dear all,
my problem is that I am using a keyboard to navigate a transformgroup
object
the class implements KeyEventDispatcher
Below is the example of the coding

if(ycounter>3.7 && ycounter<4.83)
{
x = -(Math.cos(xcounter)*Math.cos(ycounter));
y = -(Math.sin(xcounter));
z = -(Math.sin(xcounter)*Math.sin(ycounter));

n = new Vector3d(v.x+x,v.y+y,v.z+z);

if((v.x+x<15)||(v.x+x>-15)||(v.z+z>-15)||(v.z+z>-15))
{
T3.setTranslation(n);

T3.setScale(0.9); // Add this line here to do the real
SCALE
transformGroupView.setTransform(T3);
}

how do I stop the movement, for example if the z coordinate reaches
10?
Thanks a lot