Hi this is my code that you can run it also but you can across a tree I don't want it.think that there is a wall instead of a tree,I don't want the man face the wall across it.would you help me?thanks
import java.applet.Applet;
import java.awt.BorderLayout;
import java.awt.Frame;
import java.awt.GraphicsConfiguration;
import com.sun.j3d.utils.applet.MainFrame;
import com.sun.j3d.utils.universe.*;
import javax.media.j3d.*;
import javax.vecmath.*;
import java.awt.event.*;
import java.awt.AWTEvent;
import java.util.Enumeration;
import com.sun.j3d.utils.behaviors.keyboard.*;
// BillboardApp renders a simple landscape with billboard animated trees
public class BillboardApp extends Applet {
Shape3D createTree(){
int counts[] = {19};
TriangleFanArray treeGeom = new TriangleFanArray(19,
GeometryArray.COORDINATES
| GeometryArray.COLOR_3,
counts);
treeGeom.setCoordinate( 0, new Point3f( 0.00f, 0.60f, 0.0f ));
treeGeom.setCoordinate( 1, new Point3f(-0.05f, 0.00f, 0.0f ));
treeGeom.setCoordinate( 2, new Point3f( 0.05f, 0.00f, 0.0f ));
treeGeom.setCoordinate( 3, new Point3f( 0.05f, 0.25f, 0.0f ));
treeGeom.setCoordinate( 4, new Point3f( 0.15f, 0.30f, 0.0f ));
treeGeom.setCoordinate( 5, new Point3f( 0.22f, 0.25f, 0.0f ));
treeGeom.setCoordinate( 6, new Point3f( 0.18f, 0.40f, 0.0f ));
treeGeom.setCoordinate( 7, new Point3f( 0.20f, 0.55f, 0.0f ));
treeGeom.setCoordinate( 8, new Point3f( 0.15f, 0.65f, 0.0f ));
treeGeom.setCoordinate( 9, new Point3f( 0.14f, 0.80f, 0.0f ));
treeGeom.setCoordinate(10, new Point3f( 0.08f, 0.95f, 0.0f ));
treeGeom.setCoordinate(11, new Point3f( 0.00f, 1.00f, 0.0f ));
treeGeom.setCoordinate(12, new Point3f(-0.20f, 0.85f, 0.0f ));
treeGeom.setCoordinate(13, new Point3f(-0.22f, 0.70f, 0.0f ));
treeGeom.setCoordinate(14, new Point3f(-0.30f, 0.60f, 0.0f ));
treeGeom.setCoordinate(15, new Point3f(-0.35f, 0.45f, 0.0f ));
treeGeom.setCoordinate(16, new Point3f(-0.25f, 0.43f, 0.0f ));
treeGeom.setCoordinate(17, new Point3f(-0.30f, 0.25f, 0.0f ));
treeGeom.setCoordinate(18, new Point3f(-0.02f, 0.24f, 0.0f ));
Color3f c = new Color3f(0.1f, 0.9f, 0.0f);
for(int i = 0; i < 19; i++) treeGeom.setColor(i, c);
c.set(0.5f, 0.5f, 0.3f);
treeGeom.setColor( 1, c);
treeGeom.setColor( 2, c);
treeGeom.setColor(18, c);
Shape3D tree = new Shape3D(treeGeom);
return tree;
}
Shape3D createLand(){
LineArray landGeom = new LineArray(44, GeometryArray.COORDINATES
| GeometryArray.COLOR_3);
float l = -50.0f;
for(int c = 0; c < 44; c+=4){
landGeom.setCoordinate( c+0, new Point3f( -50.0f, 0.0f, l ));
landGeom.setCoordinate( c+1, new Point3f( 50.0f, 0.0f, l ));
landGeom.setCoordinate( c+2, new Point3f( l , 0.0f, -50.0f ));
landGeom.setCoordinate( c+3, new Point3f( l , 0.0f, 50.0f ));
l += 10.0f;
}
Color3f c = new Color3f(0.1f, 0.8f, 0.1f);
for(int i = 0; i < 44; i++) landGeom.setColor( i, c);
return new Shape3D(landGeom);
}
public BranchGroup createSceneGraph(SimpleUniverse su) {
// Create the root of the branch graph
TransformGroup vpTrans = null;
BranchGroup objRoot = new BranchGroup();
Vector3f translate = new Vector3f();
Transform3D T3D = new Transform3D();
TransformGroup TGT = null;
TransformGroup TGR = null;
Billboard billboard = null;
BoundingSphere bSphere = new BoundingSphere();
objRoot.addChild(createLand());
SharedGroup share = new SharedGroup();
share.addChild(createTree());
float[][] position = {{ 0.0f, 0.0f, -3.0f},
{ 6.0f, 0.0f, 0.0f},
{ 6.0f, 0.0f, 6.0f},
{ 3.0f, 0.0f, -10.0f},
{ 13.0f, 0.0f, -30.0f},
{-13.0f, 0.0f, 30.0f},
{-13.0f, 0.0f, 23.0f},
{ 13.0f, 0.0f, 3.0f}};
for (int i = 0; i < position.length; i++){
translate.set(position[i]);
T3D.setTranslation(translate);
TGT = new TransformGroup(T3D);
TGR = new TransformGroup();
TGR.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
billboard = new Billboard(TGR);
billboard.setSchedulingBounds(bSphere);
// billboard.setAlignmentMode(Billboard.ROTATE_ABOUT_POINT);
objRoot.addChild(TGT);
objRoot.addChild(billboard);
TGT.addChild(TGR);
TGR.addChild(new Link(share));
}
vpTrans = su.getViewingPlatform().getViewPlatformTransform();
translate.set( 0.0f, 0.3f, 0.0f);
T3D.setTranslation(translate);
vpTrans.setTransform(T3D);
KeyNavigatorBehavior keyNavBeh = new KeyNavigatorBehavior(vpTrans);
keyNavBeh.setSchedulingBounds(new BoundingSphere(new Point3d(),1000.0));
objRoot.addChild(keyNavBeh);
Background background = new Background();
background.setColor(0.3f, 0.3f, 1.0f);
background.setApplicationBounds(new BoundingSphere());
objRoot.addChild(background);
// Let Java 3D perform optimizations on this scene graph.
objRoot.compile();
return objRoot;
} // end of CreateSceneGraph method of BillboardApp
public BillboardApp() {
setLayout(new BorderLayout());
GraphicsConfiguration config =
SimpleUniverse.getPreferredConfiguration();
Canvas3D canvas3D = new Canvas3D(config);
add("Center", canvas3D);
// SimpleUniverse is a Convenience Utility class
SimpleUniverse simpleU = new SimpleUniverse(canvas3D);
BranchGroup scene = createSceneGraph(simpleU);
simpleU.addBranchGraph(scene);
} // end of BillboardApp (constructor)
// The following allows this to be run as an application
// as well as an applet
public static void main(String[] args) {
System.out.print("BillboardApp.java \n- a demonstration of the Billboard Behavior ");
System.out.println("class to provide animation in a Java 3D scene.");
System.out.println("When the app loads, you can use the arrow keys to move.");
System.out.println("No matter what direction you face, the trees will face you.");
System.out.println("This is an example progam from The Java 3D API Tutorial.");
System.out.println("The Java 3D Tutorial is available on the web at:");
System.out.println("http://java.sun.com/products/java-media/3D/collateral");
Frame frame = new MainFrame(new BillboardApp(), 256, 256);
} // end of main (method of BillboardApp)
} // end of class BillboardApp