Ingo,
FYI. This bug is only limited to TriangleFanArray with View's
TransparencySortingPolicy set to View.TRANSPARENCY_SORT_GEOMETRY. Parts
of Cylinder and Cone use TriangleFanArray. It will be fixed in our next
release.
thanks,
Chien Yang
Java 3D Team.
BugId 4619139 : Using TransparencySortingPolicy may hang application.
> Delivered-To: [EMAIL PROTECTED]
> MIME-Version: 1.0
> Content-MD5: pSiZd170F4ureNBZZ/5uMw==
> Date: Thu, 3 Jan 2002 11:34:56 -0800
> From: Chien Yang <[EMAIL PROTECTED]>
> Subject: Re: [JAVA3D] TransparencySortingPolicy (another bug?)
> Comments: To: [EMAIL PROTECTED]
> To: [EMAIL PROTECTED]
>
> Ingo,
> Once again, thanks for the test program. The program does
> hang on my machine. I've filed a bug report, and hope it will be fixed
> in our next release.
>
> BugId 4619139 : Using TransparencySortingPolicy may hang application.
>
> thanks,
> Chien Yang
> Java 3D Team.
>
> > Delivered-To: [EMAIL PROTECTED]
> > X-Authentication-Warning: oc30.uni-paderborn.de: ib set sender to
> [EMAIL PROTECTED] using -f
> > Date: Thu, 3 Jan 2002 18:59:32 +0100
> > From: Ingo Brunberg <[EMAIL PROTECTED]>
> > Subject: [JAVA3D] TransparencySortingPolicy (another bug?)
> > To: [EMAIL PROTECTED]
> >
> > Hi folks,
> >
> > one of the new features in j3d 1.3b1 to set what is called a
> > TransparencySortingPolicy. While this is fine in theory, I found a lot
> > of problems. Those may be specific to Linux in combination with
> > several graphics cards, but that is just a guess. I have tested this
> > with a Matrox G400 and a Geforce II.
> >
> > The first and most serious problem is that an application hangs, when
> > a cylinder (maybe this occurs with other primitives, too) with
> > transparent appearance should be displayed. I have attached a test
> > programm to demonstrate that.
> > The second problem is that transparent objects, which don't cause a
> > crash, leave some artifacts on the screen (perhaps the same problem
> > Bob Gray described in a recent e-mail).
> >
> > It's a pity, that this new feature, which should have solved some of
> > Java 3D's transparency problems is so completely unusable.
> >
> > Regards,
> >
> > Ingo
> >
> >
> > ===File ~/TSPTest.java======================================
> > import java.awt.Font;
> > import javax.swing.JFrame;
> > import javax.media.j3d.*;
> > import javax.vecmath.*;
> > import com.sun.j3d.utils.universe.*;
> > import com.sun.j3d.utils.behaviors.mouse.*;
> > import com.sun.j3d.utils.geometry.Cylinder;
> >
> > public class TSPTest extends JFrame {
> > public static void main(String[] args) {
> > TSPTest frame = new TSPTest();
> > Canvas3D canvas = new Canvas3D(
> > SimpleUniverse.getPreferredConfiguration());
> > SimpleUniverse universe = new SimpleUniverse(canvas);
> > universe.addBranchGraph(frame.createSceneGraph());
> >
> > /*
> > If the following line is uncommented, the application hangs
> > (at least on some Linux configurations)
> > */
> >
>
//universe.getViewer().getView().setTransparencySortingPolicy(View.TRANSPARENCY_
> SORT_GEOMETRY);
> >
> > Transform3D vpLocation = new Transform3D();
> > TransformGroup vptg = universe.getViewingPlatform(
> > ).getViewPlatformTransform();
> > vptg.getTransform(vpLocation);
> > vpLocation.setTranslation(new Vector3d(0.0, 0.0, 8.0));
> > vptg.setTransform(vpLocation);
> > canvas.setSize(300, 300);
> > frame.getContentPane().add(canvas);
> > frame.setDefaultCloseOperation(EXIT_ON_CLOSE);
> > frame.pack();
> > frame.show();
> > }
> >
> > private BranchGroup createSceneGraph() {
> > BranchGroup branch = new BranchGroup();
> >
> > TransformGroup tg = new TransformGroup();
> > tg.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
> > tg.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
> > branch.addChild(tg);
> >
> > MouseRotate myMouseRotate = new MouseRotate();
> > myMouseRotate.setTransformGroup(tg);
> > myMouseRotate.setSchedulingBounds(new BoundingSphere());
> > branch.addChild(myMouseRotate);
> >
> > DirectionalLight light = new DirectionalLight();
> > light.setInfluencingBounds(new BoundingSphere());
> > branch.addChild(light);
> >
> > Appearance appearance = new Appearance();
> > appearance.setTransparencyAttributes(
> > new TransparencyAttributes(
> > TransparencyAttributes.NICEST, 0.5f));
> > Cylinder cylinder = new Cylinder(1.0f, 2.0f, appearance);
> > tg.addChild(cylinder);
> >
> > return branch;
> > }
> > }
> > ============================================================
> >
> > ===========================================================================
> > To unsubscribe, send email to [EMAIL PROTECTED] and include in the body
> > of the message "signoff JAVA3D-INTEREST". For general help, send email to
> > [EMAIL PROTECTED] and include in the body of the message "help".
>
> ===========================================================================
> To unsubscribe, send email to [EMAIL PROTECTED] and include in the body
> of the message "signoff JAVA3D-INTEREST". For general help, send email to
> [EMAIL PROTECTED] and include in the body of the message "help".
===========================================================================
To unsubscribe, send email to [EMAIL PROTECTED] and include in the body
of the message "signoff JAVA3D-INTEREST". For general help, send email to
[EMAIL PROTECTED] and include in the body of the message "help".
