// Based on [url=http://www.java2s.com/Code/Java/3D/HelloJava3Dbrendersasinglerotatedcube.htm]HelloJava3Db renders a single, rotated cube : 3D Basics3DJava[/url]
import java.applet.Applet;
import java.awt.BorderLayout;
import java.awt.Frame;
import java.awt.GraphicsConfiguration;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import javax.media.j3d.BoundingSphere;
import javax.media.j3d.BranchGroup;
import javax.media.j3d.Canvas3D;
import javax.media.j3d.Transform3D;
import javax.media.j3d.TransformGroup;
import javax.vecmath.Point3d;
import javax.vecmath.Vector3f;
import com.sun.j3d.utils.applet.MainFrame;
import com.sun.j3d.utils.behaviors.keyboard.KeyNavigatorBehavior;
import com.sun.j3d.utils.behaviors.mouse.MouseRotate;
import com.sun.j3d.utils.geometry.ColorCube;
import com.sun.j3d.utils.universe.SimpleUniverse;
public class ClickingHelloJava3Db extends Applet {
public BranchGroup createSceneGraph() {
// Create the root of the branch graph
BranchGroup objRoot = new BranchGroup();
objRoot.setCapability(BranchGroup.ALLOW_CHILDREN_EXTEND);
Transform3D rotate = new Transform3D();
Transform3D tempRotate = new Transform3D();
rotate.rotX(Math.PI / 4.0d);
tempRotate.rotY(Math.PI / 5.0d);
rotate.mul(tempRotate);
TransformGroup objRotate = new TransformGroup(rotate);
objRoot.addChild(objRotate);
objRotate.addChild(new ColorCube(0.4));
return objRoot;
}
public ClickingHelloJava3Db() {
setLayout(new BorderLayout());
GraphicsConfiguration config = SimpleUniverse
.getPreferredConfiguration();
Canvas3D canvas3D = new Canvas3D(config);
add("Center", canvas3D);
BranchGroup scene = createSceneGraph();
SimpleUniverse simpleU = new SimpleUniverse(canvas3D);
simpleU.getViewingPlatform().setNominalViewingTransform();
TransformGroup viewTransformGroup =
simpleU.getViewingPlatform().getViewPlatformTransform();
KeyNavigatorBehavior keyInteractor =
new KeyNavigatorBehavior(viewTransformGroup);
BoundingSphere movingBounds = new BoundingSphere(
new Point3d(0.0, 0.0, 0.0), 100.0);
keyInteractor.setSchedulingBounds(movingBounds);
scene.addChild(keyInteractor);
MouseRotate behavior = new MouseRotate();
behavior.setTransformGroup(viewTransformGroup);
scene.addChild(behavior);
behavior.setSchedulingBounds(movingBounds);
simpleU.addBranchGraph(scene);
initPickingTest(scene, canvas3D);
}
private void initPickingTest(final BranchGroup scene, final Canvas3D canvas)
{
canvas.addMouseListener(new MouseAdapter() {
@Override
public void mouseReleased(MouseEvent e) {
System.out.println("Screen "+e.getPoint());
Point3d point = new Point3d();
canvas.getPixelLocationInImagePlate(e.getX(), e.getY(),point);
System.out.println("Image plate "+point);
Transform3D transform = new Transform3D();
canvas.getImagePlateToVworld(transform);
transform.transform(point);
System.out.println("World "+point);
TransformGroup tg = new TransformGroup();
Transform3D t = new Transform3D();
Vector3f translation = new Vector3f(
(float)point.x, (float)point.y, (float)point.z);
t.setTranslation(translation);
tg.setTransform(t);
tg.addChild(new ColorCube(0.1));
BranchGroup bg = new BranchGroup();
bg.addChild(tg);
scene.addChild(bg);
}
});
}
public static void main(String[] args) {
Frame frame = new MainFrame(new ClickingHelloJava3Db(), 512, 512);
}
}