Re: [JAVA3D] Setting the appearance on the top side of a cylinder

[Juan Carlos Bermudez]

Hi everyone, hi Alessandro,

  problem is, I want that the picture defining the texture will tile
enough times, as to create the impression the texture is a good plain
piece of turf, or a street formed of little pebbles packed together.

  After I have set the capability for auto-generating texturecoords, and
have unset the setTexCoordGeneration for the appearance, the image
displays without lines, but I need the tiling. I have set the
setBoundaryModeS(Texture.WRAP) and setBoundaryModeT(Texture.WRAP) methods
of the texture objet I apply to the appearance, but the image doesn't
tile. Can someone tell me, what am I missing?

  I post the code with the modification Alessandro adviced me to do, plus
some I added, keyNavigation + clipingDistances.
  Thanks in advance,
JC

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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;
import com.sun.j3d.utils.behaviors.keyboard.KeyNavigatorBehavior;
import javax.media.j3d.View;

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");

    myVWorld.getViewingPlatform().getViewers()[0].getView().
                                                 setBackClipDistance
(500.0d);

    myVWorld.getViewingPlatform().getViewers()[0].getView().
                                                  setFrontClipDistance
(0.05d);


    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();

    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.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.setTexture(wallsTexture);

    wallsTexture.setBoundaryModeS(Texture.WRAP);
    wallsTexture.setBoundaryModeT(Texture.WRAP);

    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);

    float cylRadio = 50.0f;

    Cylinder cyl = new Cylinder(cylRadio*1.0f, 0.1f,
                                Cylinder.GENERATE_NORMALS|
                                Cylinder.GENERATE_TEXTURE_COORDS,
                                64, 1, theApp);

   cyl.getShape(Cylinder.TOP).setAppearance(theApp);
   //cyl.setAppearance(cyl.TOP, theApp);

    Transform3D tr3DTransl = new Transform3D();
    tr3DTransl.set(new Vector3d(0.0f, -0.15f, 0.0f));

    TransformGroup shiftTerrainTrGrp = new TransformGroup(tr3DTransl);
    shiftTerrainTrGrp.addChild(cyl);

    trGrpMain.addChild(shiftTerrainTrGrp);

    MouseZoom mZoom = new MouseZoom(trGrpMain);
    MouseRotate mRot = new MouseRotate(trGrpMain);
    MouseTranslate mTransl = new MouseTranslate(trGrpMain);

    KeyNavigatorBehavior keynav =
             new KeyNavigatorBehavior(myVWorld.getViewingPlatform().
                                               getViewPlatformTransform());

    keynav.setSchedulingBounds(inflZone);
    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);
    brGrp.addChild(keynav);
    myVWorld.getLocale().addBranchGraph(brGrp);


    Transform3D tr3D = new Transform3D();
    tr3D.setTranslation(new Vector3f(0.0f, 0.05f, 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();
  }

}
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