Thanks Thomas. A good point to catch the object instantly. -Ian
-----Original Message-----
From: Thomas Gilbert Giusepe [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, November 20, 2001 5:11 AM
To: [EMAIL PROTECTED]
Subject: Re: [JAVA3D] Static scene vs. Camera navigated scene
Hi Ian,
To setup it inside of view, use the method lookAt. It will solve your
problem. Rgds, Thomas
>From: Ian Wang <[EMAIL PROTECTED]>
>Reply-To: Discussion list for Java 3D API <[EMAIL PROTECTED]>
>To: [EMAIL PROTECTED]
>Subject: Re: [JAVA3D] Static scene vs. Camera navigated scene
>Date: Mon, 19 Nov 2001 16:10:13 -0600
>
>It works finally. The problem is that my caption was out of range (outside
>of view). By adjusting its location and scale, I can see a stable
>stationary caption. So other items belonging to my background can be easily
>added. Thanks friends for your helps.
>
>Ian Wang
> ----- Original Message -----
> From: Ian Wang
> To: [EMAIL PROTECTED]
> Sent: Monday, November 19, 2001 1:34 PM
> Subject: Re: [JAVA3D] Static scene vs. Camera navigated scene
>
>
> Thanks Joachim, Xiaowen, and Thomas for your kind helps.
>
> Joachim suggested to use Billboard, I believe it works. However, the
>text label (caption) will not be a completely fixed caption. It appears
>rotating back and forth a bit (not so stationary).
>
> Thomas' method should work. I compiled your code, and it runs well. In
>my case, I didn't use keyNavigator. So I tried Xiaowen's suggestion first.
>
> Xiaowen suggested to use ViewingPlatform.setPlatformGeometry() method to
>attach the caption to the ViewingPlatform of a SimpleUniverse. I did it as
>follows. No error message. But I cannot see my caption. How can I bring it
>in front of my eyes? Should I attach a BranchGroup node or a TransformGroup
>node?
>
> .....
> SimpleUniverse simpleU = new SimpleUniverse(canvas3D);
> PlatformGeometry pg = new PlatformGeometry();
> pg.addChild(setCaption());
> ViewingPlatform vp = simpleU.getViewingPlatform();
> vp.setPlatformGeometry(pg);
> BranchGroup scene = createSceneGraph();
> simpleU.addBranchGraph(scene);
> .....
>
> public BranchGroup setCaption()
> {
> BranchGroup captionBG = new BranchGroup();
> TransformGroup captionTG = new TransformGroup();
> String fontName = "TestFont";
> String textString ="This is my Caption";
> float len = textString.length();
>
> Color3f textColor = new Color3f(0.7f, 0.8f, 0.6f);
> Material text = new
>Material(textColor,CONSTANTS.black,textColor,
> CONSTANTS.white,100.0f);
> text.setLightingEnable(true);
>
> Appearance appearText = new Appearance();
> appearText.setMaterial(text);
>
> Line2D.Float height = new Line2D.Float(0.0f, 0.0f, 1.2f, 0.0f);
> Font3D f3d = new Font3D(new Font(fontName,Font.PLAIN,2),
> new FontExtrusion(height));
> Text3D txt = new Text3D(f3d,textString,
> new Point3f(-(len-1)/2,8.5f,0.0f),Text3D.ALIGN_FIRST,
>Text3D.PATH_RIGHT);
>
> Shape3D textShape = new Shape3D();
> textShape.setGeometry(txt);
> textShape.setAppearance(appearText);
>
> Transform3D tex = new Transform3D();
> tex.set(new Vector3f(50.0f, 50.0f, 222.0f)); <----- location of
>my caption
> captionTG.setTransform(tex);
>
> captionTG.addChild(textShape);
> captionBG.addChild(captionTG);
> return captionBG;
> }
>
> I guess I didn't use the correct TransformGroup.
>
> Ian Wang
> >From: "Wang, Lihui"
> >Reply-To: Discussion list for Java 3D API
> >To: [EMAIL PROTECTED]
> >Subject: [JAVA3D] Static scene vs. Camera navigated scene
> >Date: Fri, 16 Nov 2001 14:43:24 -0500
> >
> >Hello,
> >
> >I have a scene graph attached to a Simple Universe. By manipulating a
> >camera's TransformGroup obtained through
> >SimpleU.getViewingPlatform().getViewPlatformTransform(), It is
>possible to
> >do a camera-based navigation through my Java 3D scene.
> >
> >Now, I want to add a stationary background with a static Text3D label
>to the
> >same Canvas3D, but not to be affected by the camera's viewpoint. It
>means
> >that no matter where the viewpoint is and no matter what the camera's
> >orientation is, the background and the text label remain stationary
>to the
> >viewer.
> >
> >Could somebody kindly give me a hint of how to do it? Is it possible
>to
> >detach the ViewPlatform from the SimpleUniverse and attach it to a
>lower
> >node, so the higher part of the scene graph may become stationary?
> >
> >Thanks.
> >
> >Ian Wang
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