Here is an example of scaling by running through the
scenegraph :
The scaling function is called as this:
BranchGroup brGrp = (BranchGroup)switchGroup.getChild(i);
System.out.println("nscale: Number of children of BranchGroup =
" + brGrp.numChildren());
Enumeration enum = brGrp.getAllChildren();
nodeLevel = 0;
maxNodeLevel = 0;
scaleOnLowestLevel(enum,0.5f);
This is the function that scales:
public void scaleOnLowestLevel(Enumeration enum, float scale){
nodeLevel++;
System.out.println("scaleOnLowestLevel: nodeLevel = "+nodeLevel);
while (enum.hasMoreElements()) {
Object tmpObject = enum.nextElement();
if (tmpObject instanceof Shape3D) {
System.out.println("scaleOnLowestLevel: a shape3D");
} else if (tmpObject instanceof TransformGroup) {
if (nodeLevel > maxNodeLevel) maxNodeLevel = nodeLevel;
System.out.println("scaleOnLowestLevel: deepest transform
level : " + maxNodeLevel);
System.out.println("scaleOnLowestLevel: a transformgroup");
TransformGroup tmptransformGroup =
(TransformGroup)tmpObject;
Transform3D trans = new Transform3D();
tmptransformGroup.getTransform(trans);
System.out.println("scaleOnLowestLevel: originally transform
= " + trans);
Transform3D transnew = new Transform3D();
tmptransformGroup.setTransform(transnew);
Enumeration nextenum = tmptransformGroup.getAllChildren();
scaleOnLowestLevel(nextenum,scale);
if (nodeLevel == maxNodeLevel) {
System.out.println("scaleOnLowestLevel: originally
transform = " + trans);
trans.setScale(0.5);
tmptransformGroup.setTransform(trans);
System.out.println("scaleOnLowestLevel: modified
transform = " + trans);
} else {
tmptransformGroup.setTransform(trans);
}
} else if(tmpObject instanceof Group){
System.out.println("scaleOnLowestLevel: a group");
Group tmpGroup = (Group)tmpObject;
Enumeration groupenum = tmpGroup.getAllChildren();
scaleOnLowestLevel(groupenum,scale);
} else {
System.out.println("scaleOnLowestLevel: What is this
thing?");
}
}
nodeLevel--;
}
Hope it helps you out !
Ole Vilmann
Danish Maritime Institute
-----Original Message-----
From: Andreas Ebbert [mailto:[EMAIL PROTECTED]]
Sent: 6. november 2000 22:49
To: [EMAIL PROTECTED]
Subject: [JAVA3D] vrml again, sorry
Hi,
I know this has been said before, but I cannot find it in the archives
:-( There was a way to scale/translate the Shape3Ds, read via the vrml97
loader, to origin and fitting into the unit cube. Could you please tell
me how this was done?
Thank you so much!
Andreas
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