As the xception states: Only BranchGroups can be added or removed. A TransformGroup is
not a
BranchGroup only inherited from Group (easy to overlook). What you have to do is add
the
TransformGroup you want to add/remove to a BranchGroup. This BranchGroup can then be
removed and
added.
Claus Goettfert schrieb:
> Hi,
>
> we have currently a problem removing TransformGroup from other
> TransformGroups; at certain code elements with a certain TransformGroup we
> get the error message stated in the subject. We also can't add a another
> TransformGroup. Please help us! The code in question is attached below.
>
> < ------------------ code ------------------>
> public void run() {
> Thread t = Thread.currentThread();
> Particle c_p;
> Particle c_p2;
> Alpha c_a;
> try
> {
> t.sleep(2000);
> }
> catch(InterruptedException e)
> {
> }
>
> while (true) {
> for (int i=0;i<p_vector.size();i++)
> {
>
> c_p = (Particle) p_vector.elementAt(i);
> c_a = c_p.getAlpha();
> if (c_a.finished()) {
>
> //System.out.println(p_vector.size());
>
> ps_root_TG.removeChild((c_p.getChildNum()+1));
> c_p2 = new
>Particle(1,p_alpha_factor,p_TCB_keys,p_x_disp_factor,
> p_y_disp_factor, p_z_disp_factor,
> axis_ofrotposscale, ps_apps, c_p.getChildNum());
> TransformGroup c_TG = new TransformGroup();
>
> c_TG.addChild(c_p2.getTG());
> ps_root_TG.addChild(c_TG);
>
> }
> else t.yield();
> }
>
> }
>
> }
>
> < ------------------ code ------------------>
>
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