> X-Accept-Language: en
> MIME-Version: 1.0
> Content-Transfer-Encoding: 7bit
> Date: Wed, 2 May 2001 10:45:44 -0500
> From: John Wright <[EMAIL PROTECTED]>
> Subject: [JAVA3D] Oriented Shape3Ds in Shared Groups
> To: [EMAIL PROTECTED]
>
> Oriented Shape3Ds in Shared Groups appears to be malfuctioning again
> (Java 3D 1.2.1 and 1.2.1_01). The shapes do appear but do not change
> orientation anymore.
>
> - John Wright
> Starfire Research
Attached is a modified version of the OrientedTest example program, placing
the OrienetdShape3D (text) in a SharedGroup. This example works.
If you have a more complicated example that is not working please send us
an example program so we can investigate.
Thanks,
Dan Petersen
Java 3D Team
Sun Microsystems
/*
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import java.applet.Applet;
import java.awt.*;
import java.awt.event.*;
import com.sun.j3d.utils.image.TextureLoader;
import com.sun.j3d.utils.applet.MainFrame;
import com.sun.j3d.utils.geometry.*;
import com.sun.j3d.utils.universe.*;
import javax.media.j3d.*;
import javax.vecmath.*;
import com.sun.j3d.utils.behaviors.mouse.*;
public class OrientedTest extends Applet {
// setup font stuff
private String fontName = "TestFont";
private String textString = "OrientedShape3D";
float sl = textString.length();
// paths to texture image files
private java.net.URL earthImage = null;
private java.net.URL stoneImage = null;
private SimpleUniverse u = null;
public BranchGroup createSceneGraph() {
// Create the root of the branch graph
BranchGroup objRoot = new BranchGroup();
TransformGroup objScale = new TransformGroup();
Transform3D textMat = new Transform3D();
// Assuming uniform size chars, set scale to fit string in view
textMat.setScale(1.2/sl);
objScale.setTransform(textMat);
// Create the transform group node and initialize it to the
// identity. Enable the TRANSFORM_WRITE capability so that
// our behavior code can modify it at runtime. Add it to the
// root of the subgraph.
TransformGroup objTrans = new TransformGroup();
objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
objRoot.addChild(objTrans);
BoundingSphere bounds =
new BoundingSphere(new Point3d(0.0,0.0,0.0), 100.0);
Appearance apText = new Appearance();
Material m = new Material();
m.setLightingEnable(true);
apText.setMaterial(m);
Appearance apEarth= new Appearance();
Material mm = new Material();
mm.setLightingEnable(true);
apEarth.setMaterial(mm);
Appearance apStone = new Appearance();
apStone.setMaterial(mm);
// Put OrientedShape3D in a SharedGroup
SharedGroup sg = new SharedGroup();
Font3D f3d = new Font3D(new Font(fontName, Font.PLAIN, 2),
new FontExtrusion());
Text3D txt = new Text3D(f3d, textString,
new Point3f( -sl/2.0f, 3.0f, 0.0f));
OrientedShape3D textShape = new OrientedShape3D();
textShape.setGeometry(txt);
textShape.setAppearance(apText);
textShape.setAlignmentAxis( 0.0f, 1.0f, 0.0f);
sg.addChild( textShape );
// Add a Link in the SceneGraph
Link link1 = new Link(sg);
objScale.addChild(link1);
// Move down a bit and add another Link
Transform3D t3d = new Transform3D();
t3d.set(new Vector3d(0.0d, -8.0d, 0.0d));
TransformGroup xlateTrans = new TransformGroup(t3d);
objScale.addChild(xlateTrans);
Link link2 = new Link(sg);
xlateTrans.addChild(link2);
// Create a simple shape leaf node, add it to the scene graph.
Transform3D cubeMat = new Transform3D();
TransformGroup cubeTrans = new TransformGroup(cubeMat);
cubeMat.set(new Vector3d(0.9, 0.0, -1.0));
cubeTrans.setTransform(cubeMat);
cubeTrans.addChild(new ColorCube(0.3));
objTrans.addChild(cubeTrans);
TextureLoader stoneTex = new TextureLoader(stoneImage, new String("RGB"),
this);
if (stoneTex != null) apStone.setTexture(stoneTex.getTexture());
TextureAttributes texAttr = new TextureAttributes();
texAttr.setTextureMode(TextureAttributes.MODULATE);
apStone.setTextureAttributes(texAttr);
Transform3D coneMat = new Transform3D();
TransformGroup coneTrans = new TransformGroup(coneMat);
coneMat.set(new Vector3d(0.0, 0.0, 0.0));
coneTrans.setTransform(coneMat);
coneTrans.addChild(new Cone(.2f, 0.8f,Cone.GENERATE_NORMALS |
Cone.GENERATE_TEXTURE_COORDS, apStone));
objTrans.addChild(coneTrans);
TextureLoader earthTex = new TextureLoader(earthImage, new String("RGB"),
this);
if (earthTex != null) apEarth.setTexture(earthTex.getTexture());
apEarth.setTextureAttributes(texAttr);
Transform3D cylinderMat = new Transform3D();
TransformGroup cylinderTrans = new TransformGroup(cylinderMat);
cylinderMat.set(new Vector3d(-0.9, 0.5, -1.0));
cylinderTrans.setTransform(cylinderMat);
cylinderTrans.addChild(new Cylinder(.35f, 2.0f,Cylinder.GENERATE_NORMALS |
Cylinder.GENERATE_TEXTURE_COORDS, apEarth));
objTrans.addChild(cylinderTrans);
objTrans.addChild(objScale);
// Set up the background
Color3f bgColor = new Color3f(0.05f, 0.05f, 0.5f);
Background bgNode = new Background(bgColor);
bgNode.setApplicationBounds(bounds);
objRoot.addChild(bgNode);
// Set up the ambient light
Color3f ambientColor = new Color3f(0.1f, 0.1f, 0.1f);
AmbientLight ambientLightNode = new AmbientLight(ambientColor);
ambientLightNode.setInfluencingBounds(bounds);
objRoot.addChild(ambientLightNode);
// Set up the directional lights
Color3f light1Color = new Color3f(1.0f, 1.0f, 0.9f);
Vector3f light1Direction = new Vector3f(1.0f, 1.0f, 1.0f);
Color3f light2Color = new Color3f(1.0f, 1.0f, 0.9f);
Vector3f light2Direction = new Vector3f(-1.0f, -1.0f, -1.0f);
DirectionalLight light1
= new DirectionalLight(light1Color, light1Direction);
light1.setInfluencingBounds(bounds);
objRoot.addChild(light1);
DirectionalLight light2
= new DirectionalLight(light2Color, light2Direction);
light2.setInfluencingBounds(bounds);
objRoot.addChild(light2);
apText.setMaterial(mm);
// Have Java 3D perform optimizations on this scene graph.
objRoot.compile();
return objRoot;
}
public OrientedTest() {
}
public OrientedTest(java.net.URL earthURL, java.net.URL stoneURL) {
earthImage = earthURL;
stoneImage = stoneURL;
}
public void init() {
// the paths to the image files for an applet
if (earthImage == null) {
try {
earthImage = new java.net.URL(getCodeBase().toString() +
"../images/earth.jpg");
}
catch (java.net.MalformedURLException ex) {
System.out.println(ex.getMessage());
System.exit(1);
}
}
if (stoneImage == null) {
try {
stoneImage = new java.net.URL(getCodeBase().toString() +
"../images/stone.jpg");
}
catch (java.net.MalformedURLException ex) {
System.out.println(ex.getMessage());
System.exit(1);
}
}
setLayout(new BorderLayout());
GraphicsConfiguration config =
SimpleUniverse.getPreferredConfiguration();
Canvas3D c = new Canvas3D(config);
add("Center", c);
// Create a simple scene and attach it to the virtual universe
BranchGroup scene = createSceneGraph();
u = new SimpleUniverse(c, 4);
// add mouse behaviors to ViewingPlatform
ViewingPlatform viewingPlatform = u.getViewingPlatform();
// there is a special rotate behavior, so can't use the utility
// method
MouseRotateY rotate = new MouseRotateY(MouseRotateY.INVERT_INPUT);
rotate.setTransformGroup(viewingPlatform.getMultiTransformGroup().
getTransformGroup(0));
BranchGroup rotateBG = new BranchGroup();
rotateBG.addChild(rotate);
viewingPlatform.addChild(rotateBG);
BoundingSphere bounds =
new BoundingSphere(new Point3d(0.0,0.0,0.0), 100.0);
rotate.setSchedulingBounds(bounds);
MouseZoom zoom =
new MouseZoom(c, MouseZoom.INVERT_INPUT);
zoom.setTransformGroup(viewingPlatform.getMultiTransformGroup().
getTransformGroup(1));
zoom.setSchedulingBounds(bounds);
BranchGroup zoomBG = new BranchGroup();
zoomBG.addChild(zoom);
viewingPlatform.addChild(zoomBG);
MouseTranslate translate =
new MouseTranslate(c, MouseTranslate.INVERT_INPUT);
translate.setTransformGroup(viewingPlatform.getMultiTransformGroup().
getTransformGroup(2));
translate.setSchedulingBounds(bounds);
BranchGroup translateBG = new BranchGroup();
translateBG.addChild(translate);
viewingPlatform.addChild(translateBG);
// This will move the ViewPlatform back a bit so the
// objects in the scene can be viewed.
u.getViewingPlatform().setNominalViewingTransform();
u.addBranchGraph(scene);
}
public void destroy() {
u.removeAllLocales();
}
//
// The following allows OrientedTest to be run as an application
// as well as an applet
//
public static void main(String[] args) {
java.net.URL earthURL = null;
java.net.URL stoneURL = null;
try {
// the paths to the image files for an application
earthURL = new java.net.URL("file:../images/earth.jpg");
stoneURL = new java.net.URL("file:../images/stone.jpg");
}
catch (java.net.MalformedURLException ex) {
System.out.println(ex.getMessage());
System.exit(1);
}
new MainFrame(new OrientedTest(earthURL, stoneURL), 400, 400);
}
}
