hi
If you create you cylinder with flag GENERATE_TEXTURE_COORDS, there is no need
to create texture coords with TexCoordGeneration, unless you need some especial
features as sphere mapping, reflection mapping, 3D or 4D texture coords, etc
Alessandro Borges
--- Juan Carlos Bermudez <[EMAIL PROTECTED]> escreveu: > Hello
everyone,
>
> I am having problems trying to set the appearance of the top side of a
> cylinder. I use a picture to indicate the texture I want to apply to my
> cylinder, but when I do a setAppearance on the top side of the cylinder--
> setAppearance.(cyl.TOP, theApp) or cyl.getShape(Cylinder.TOP).setAppearance
> (theApp)-- all I see are lines but no texture(the texture render fine on
> the round surface).
>
> I use a TexCoordGeneration plus a TextureLoader to obtaint the texture
> and the corresponding coordinates. But nothing seems to work. Can some one
> give me a hint on how to achive this? Please? What am I omitting?
>
> Below I post the code I am using. Thanks all in advance,
> JC
>
> =============================================
> Code starts here
> =============================================
> import java.awt.*;
> import java.awt.event.*;
> import javax.media.j3d.*;
> import javax.vecmath.*;
> import com.sun.j3d.utils.geometry.*;
> import com.sun.j3d.utils.universe.SimpleUniverse;
> import com.sun.j3d.utils.behaviors.mouse.*;
> import com.sun.j3d.utils.image.TextureLoader;
>
>
> public class myCylinder extends Frame implements ActionListener
> {
> protected Canvas3D displayCanvas;
>
> protected SimpleUniverse myVWorld;
>
> protected Button Quit;
>
> public myCylinder()
> {
> displayCanvas = new Canvas3D(SimpleUniverse.getPreferredConfiguration
> ());
> myVWorld = new SimpleUniverse(displayCanvas);
> Quit = new Button("Quit");
>
> Quit.addActionListener(this);
>
> this.setLayout(new BorderLayout());
> this.add("Center", displayCanvas);
>
> Panel ButtonsPanel = new Panel();
> ButtonsPanel.setLayout(new GridLayout(1, 3));
> ButtonsPanel.add(Quit);
>
> this.add("South", ButtonsPanel);
>
> Appearance theApp = new Appearance();
>
> TexCoordGeneration texCoordGen = new
> TexCoordGeneration(TexCoordGeneration.OBJECT_LINEAR,
>
> TexCoordGeneration.TEXTURE_COORDINATE_2);
>
> TextureLoader textureLoader = new TextureLoader("turf.jpg", null);
>
> ImageComponent2D img = textureLoader.getImage();
>
> Texture2D wallsTexture = new Texture2D(Texture.BASE_LEVEL,
> Texture.RGBA,
> img.getWidth(), img.getHeight
> ());
>
> wallsTexture.setBoundaryModeS(Texture.WRAP);
> wallsTexture.setBoundaryModeT(Texture.WRAP);
>
> wallsTexture.setImage(0, img);
> wallsTexture.setEnable(true);
> wallsTexture.setMagFilter(Texture.NICEST);
> wallsTexture.setMinFilter(Texture.NICEST);
>
> PolygonAttributes polyAttr =
> new PolygonAttributes(PolygonAttributes.POLYGON_FILL,
> PolygonAttributes.CULL_NONE, 0.0f);
>
> theApp.setPolygonAttributes(polyAttr);
> theApp.setTexCoordGeneration(texCoordGen);
> theApp.setTexture(wallsTexture);
>
>
> PointLight sunLight = new PointLight(new Color3f(0.9f, 0.9f, 0.9f),
> new Point3f(0.0f, 1.0f, 1.0f),
> new Point3f(1.5f, 0.0f, 0.0f));
>
> BoundingSphere inflZone =
> new BoundingSphere(new Point3d(0.0f, 0.0f, 0.0f), 300.0f);
>
> sunLight.setInfluencingBounds(inflZone);
>
>
> TransformGroup trGrpMain = new TransformGroup();
> trGrpMain.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
> trGrpMain.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
>
> trGrpMain.addChild(sunLight);
>
> Cylinder cyl = new Cylinder(1.0f, 0.1f, Cylinder.GENERATE_NORMALS,
> 64, 1, theApp);
>
> //cyl.getShape(Cylinder.TOP).setAppearance(theApp);
> cyl.setAppearance(cyl.TOP, theApp);
>
> trGrpMain.addChild(cyl);
>
> MouseZoom mZoom = new MouseZoom(trGrpMain);
> MouseRotate mRot = new MouseRotate(trGrpMain);
> MouseTranslate mTransl = new MouseTranslate(trGrpMain);
>
> mZoom.setSchedulingBounds(inflZone);
> mRot.setSchedulingBounds(inflZone);
> mTransl.setSchedulingBounds(inflZone);
>
> BranchGroup brGrp = new BranchGroup();
>
> brGrp.addChild(trGrpMain);
> brGrp.addChild(mZoom);
> brGrp.addChild(mRot);
> brGrp.addChild(mTransl);
> myVWorld.getLocale().addBranchGraph(brGrp);
>
>
> Transform3D tr3D = new Transform3D();
> tr3D.setTranslation(new Vector3f(0.0f, 0.0f, 2.0f));
>
> myVWorld.getViewingPlatform().
> getViewPlatformTransform().setTransform(tr3D);
>
> this.setSize(400, 600);
> this.setVisible(true);
>
> }
>
> public void actionPerformed(ActionEvent e)
> {
> if(e.getActionCommand() == "Quit")
> {
> this.dispose();
> System.exit(0);
> }
>
> }
>
> public static void main(String[] _args)
> {
> myCylinder cylind = new myCylinder();
> }
>
> }
> =============================================
> Code ends here
> =============================================
>
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