Thanks Ewan, but I don't understand which "shapes" did you mean by writing :
// If the current root node is a Shape3D then add it to the list of
Shape3Ds
if (root instanceof Shape3D)
shapes.add(root);
I didn't see any variable with the name "shapes", could you explain it?
Nagehan
From: Ewan Borland <[EMAIL PROTECTED]>
Reply-To: Discussion list for Java 3D API <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED]
Subject: Re: [JAVA3D] I want to move loaded shapes!!
Date: Sun, 20 Jul 2003 14:32:51 +0100
Whenever you laod a model using a loader you didn't create it can be useful
to find all the nodes of a certain type and perform some action on them.
Here's some code that traverses the full graph from any Scene and recovers
all of the Shape3D nodes. Obviouslly it's very easy to modify this to find
whatever kind of node you are looking for. Think I got it from a previous
post on the list. Remember to call this before making your scene live.
Hope it helps,
-Ewan
private Vector shape3Ds = null;
private HashSet visitedSharedGroups = null;
private void setCapabilities(Scene scene)
{
shape3Ds = new Vector();
visitedSharedGroups = new HashSet();
retrieveShape3Ds(scene.getSceneGroup());
Enumeration e = shape3Ds.elements();
while (e.hasMoreElements())
{
Shape3D shape = (Shape3D)e.nextElement();
shape.setCapability(...);
}
// Retrieve all the Shape3D nodes contained in the scene graph starting at
root
private void retrieveShape3Ds(Node root) throws CapabilityNotSetException
{
// If this is a null tree then return
if (root == null)
return;
// If the root is a shared group then make sure it hasn't already been
considered
if (root instanceof SharedGroup)
{
// If it has been visited previously then return
if (visitedSharedGroups.contains(root))
return;
// If not then add it to the list of visited shared groups
else
visitedSharedGroups.add(root);
}
// If the current root node is a Shape3D then add it to the list of
Shape3Ds
if (root instanceof Shape3D)
shapes.add(root);
// If root is a group then traverse all of its children
else if (root instanceof Group)
{
Enumeration e = ((Group)root).getAllChildren();
while(e.hasMoreElements())
retrieveShape3Ds((Node)e.nextElement());
}
// If root is a link then traverse its shared group
else if (root instanceof Link)
retrieveShape3Ds(((Link)root).getSharedGroup());
}
----- Original Message -----
From: "Alessandro Borges" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Sunday, July 20, 2003 1:20 PM
Subject: Re: [JAVA3D] I want to move loaded shapes!!
> Hi
> I guess the nodes of a loaded .obj are Shapes3D. And the nodes of a
> loaded vrml are TGs...
> I think you can get all nodes BEFORE inserting it in the scene graph,
> and set your capabilities:
>
> something like:
>
> Hashtable hash = scene.getNamedObjects();
> for (Enumeration e = hash.keys() ; e.hasMoreElements() ;)
> {
> Object obj = hash.getElement(e);
> if (obj instanceOf Shape3D)
> {
> Shape3D shape = (Shape3D)obj;
> shape.setCabapilities ( Shape3D.ALLOW...);
> ...
> }
> }
>
> (...)
> /* add loaded object to scene graph*/
> objRoot.addChild(scene);
>
>
>
> This is just a ideia. I am not sure if it will fix you problem.
>
> Alessandro
>
> nagehan pala escreveu:
>
> > Hi all
> >
> > My program loads two .obj files and they are added to a live scene
> > graph(Scene.getSceneGroup()) . They are pickable and they can be moved
by
> > the user. And i want to draw a line between them during runtime. But a
> > runtime error given:
> >
> >
> > javax.media.j3d.CapabilityNotSetException: Shape3D: no capability to
get
> > geometry
> >
> > Before I tried it with ColorCubes and set this capability:
> > PickTool.setCapabilities(node, PickTool.INTERSECT_FULL)
> >
> > And it was run. But I can't set this capability for loaded files,
because
> > node can only be Shape3D, Morph or Geometry nodes.
> >
> > i need help, please...
> >
> > Nagehan Pala
> >
> > _________________________________________________________________
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> >
>
>
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