To do this you must set the capabilities before you add the
BG to the scenegraph.
I do it this way:
Enumeration enum = sceneGroup.getAllChildren();
setVRMLCapabilities(enum);
switchGroup.addChild(sceneGroup);
The capablilties are set by the setVRMLCapabilities. This member functions
sets all the capabilities of all the nodes in the VRML scene graph before
adding to the scenegraph.
public void setVRMLCapabilities(Enumeration enum){
while (enum.hasMoreElements()) {
Object tmpObject = enum.nextElement();
if (tmpObject instanceof Shape3D) {
System.out.println("setVRMLCapabilities: a shape3D");
((Shape3D)tmpObject).setCapability(Shape3D.ALLOW_APPEARANCE_READ);
((Shape3D)tmpObject).setCapability(Shape3D.ALLOW_APPEARANCE_WRITE);
Appearance appear = ((Shape3D)tmpObject).getAppearance();
appear.setCapability(Appearance.ALLOW_COLORING_ATTRIBUTES_READ);
appear.setCapability(Appearance.ALLOW_COLORING_ATTRIBUTES_WRITE);
appear.setCapability(Appearance.ALLOW_MATERIAL_READ);
appear.setCapability(Appearance.ALLOW_MATERIAL_WRITE);
Material mat = appear.getMaterial();
mat.setCapability(Material.ALLOW_COMPONENT_READ);
mat.setCapability(Material.ALLOW_COMPONENT_WRITE);
} else if (tmpObject instanceof TransformGroup) {
System.out.println("setVRMLCapabilities: a transformgroup");
TransformGroup tmptransformGroup =
(TransformGroup)tmpObject;
tmptransformGroup.setCapability(TransformGroup.ALLOW_CHILDREN_EXTEND);
tmptransformGroup.setCapability(TransformGroup.ALLOW_CHILDREN_READ);
tmptransformGroup.setCapability(TransformGroup.ALLOW_CHILDREN_WRITE);
tmptransformGroup.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
tmptransformGroup.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
Enumeration nextenum = tmptransformGroup.getAllChildren();
setVRMLCapabilities(nextenum);
} else if(tmpObject instanceof Group){
System.out.println("setVRMLCapabilities: a group");
Group tmpGroup = (Group)tmpObject;
tmpGroup.setCapability(BranchGroup.ALLOW_DETACH);
tmpGroup.setCapability(BranchGroup.ALLOW_BOUNDS_READ);
tmpGroup.setCapability(BranchGroup.ALLOW_CHILDREN_READ);
tmpGroup.setCapability(BranchGroup.ALLOW_CHILDREN_WRITE);
tmpGroup.setCapability(BranchGroup.ALLOW_LOCAL_TO_VWORLD_READ);
Enumeration groupenum = tmpGroup.getAllChildren();
setVRMLCapabilities(groupenum);
} else {
System.out.println("setVRMLCapabilities: What is this
thing?");
}
}
}
Ole Vilmann
Danish Maritime Institute
-----Original Message-----
From: Tina Manoharan Valappil [mailto:[EMAIL PROTECTED]]
Sent: 23. november 2000 21:14
To: [EMAIL PROTECTED]
Subject: [JAVA3D] RestrictedAccessException - VRMLloader
Dear all,
this is a part of my scene graph
TG
|
BG (ALLOW_CHILDREN_WRITE & ALLOW_CHILDREN_EXTEND)
To this I am adding a scenegraph dynamically with VRMLloader.
The new additions to it are
BG (from VRMLloader)
| |
BG1 BG2
| |
Shape3D1 Shape3D2
Now if I want to set the capability(ALLLOW_APPEARANCE_READ) to the
Shape3D 1 & 2 . It is giving me RestrictedAccessException. So, I
tried giving the BG1 & BG2 , ALLOW_CHILDREN_WRITE capability but it
also
gave a RestrictedAccessException cannot set capability bits on a
live or
compiled object. ( I knew that this wouldnt work but just a try)
Can somebody please tell me as to how I can set the capability for
the children shape3Ds which I am dynamically loading with a
VRMLloader.
Thanks
Tina
Tina Manoharan
PhD. Heriot Watt University
Ph: 07801 069485 / 07740 959483 (mobile)
Ph: 0131 449 5111 ext. 4191 (office)
Ph: 0131 449 5111 ext. 4197 (lab)
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