Hi,
I'm facing a problem using two different Locales with different scenes.
It seems like the position of the first Locale influences a behavior in
the other one.
In my sample program (see code below), I create a VirtualUniverse with
two Locales, each with its own view. The MainFrame displays two
(overlapping) Canvas3D objects with the two scenes.
The first scene (=Locale 1) contains a cube which is rotated by a
MouseRotator. The funny thing is, the position of Locale2 seems to
influence the function of the mouse rotator. If I place the Locales 10m
apart, everything works fine. If I place them apart 1000m, the
MouseRotator doesn't work anymore. This has got something to do with the
scheduling bounds of the MouseRotator, since if I increase the radius of
its BoundingSphere to 1000, everything works again.
So, is this a bug? I don't think the function of a behavior should be
influenced by the position of a completly different locale...?
Maybe I should add that I'm trying this on a Linux machine with the J3D
1.1-pre-release. It would be nice if some of you could check whether the
code runs on your machines (in the version below, on my machine the
program displays the cube, but doesn't rotate it, although it should in
my opinion).
Please forgive me for the messy code, but this is a quick-and-dirty
approach.(I have included some comments in places related to the bug,
though :-)) - compile and start with "java MainFrame"
thx
Heiko
//------------------------ 8X cut here X8
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import javax.swing.*;
import javax.media.j3d.*;
import java.awt.*;
import com.sun.j3d.utils.universe.*;
import com.sun.j3d.utils.geometry.*;
import com.sun.j3d.utils.behaviors.mouse.*;
import javax.vecmath.*;
public class MainFrame extends JFrame {
public final static int WIDTH = 600;
public final static int HEIGHT = 600;
public final static int WIDTH_SMALL = 300;
public final static int HEIGHT_SMALL = 300;
VirtualUniverse universe;
Locale locale1;
Canvas3D canvas1;
Viewer viewer1;
Locale locale2;
Canvas3D canvas2;
Viewer viewer2;
TransformGroup tgRotate;
public MainFrame() {
super("Test");
init();
setVisible(true);
setSize(WIDTH, HEIGHT);
}
public void init() {
getContentPane().setLayout(null);
universe = new VirtualUniverse();
int[] x = {0, 0, 0, 0, 0, 0, 0, 0};
int[] y = {0, 0, 0, 0, 0, 0, 0, 0};
int[] z = {0, 0, 0, 0, 0, 0, 0, 0};
//the first locale
locale1 = new Locale(universe, x, y, z);
//place second locale 1000m away from first one
int[] x2 = {0, 0, 0, 1000, 0, 0, 0, 0};
//if you replace the preceeding line by the next one, it works!!
//int[] x2 = {0, 0, 0, 10, 0, 0, 0, 0};
int[] y2 = {0, 0, 0, 0, 0, 0, 0, 0};
int[] z2 = {0, 0, 0, 0, 0, 0, 0, 0};
locale2 = new Locale(universe, x2, y2, z2);
Panel border = new Panel() {
public void paint(Graphics g) {
g.setColor(Color.blue);
g.fillRect(0, 0, getWidth(), getHeight());
}
};
border.setBounds(WIDTH - WIDTH_SMALL,
HEIGHT - HEIGHT_SMALL,
WIDTH_SMALL,
HEIGHT_SMALL);
canvas1 = new Canvas3D(null);
canvas1.setBounds(0, 0, WIDTH, HEIGHT);
viewer1 = new Viewer(canvas1);
ViewingPlatform vp1 = new ViewingPlatform();
vp1.setNominalViewingTransform();
viewer1.setViewingPlatform(vp1);
locale1.addBranchGraph(vp1);
ColorCube cube = new ColorCube(0.1);
tgRotate = new TransformGroup();
tgRotate.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
tgRotate.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
//the offending behavior
MouseRotate mouseRotate = new MouseRotate(tgRotate);
//if you change the sphere radius to 1000 it works!
mouseRotate.setSchedulingBounds(new BoundingSphere(
new Point3d(0, 0, 0), 400));
BranchGroup bgCube = new BranchGroup();
tgRotate.addChild(cube);
bgCube.addChild(tgRotate);
//bgCube will be assigned to locale1, so the behavior should work there
bgCube.addChild(mouseRotate);
canvas2 = new Canvas3D(null);
canvas2.setBounds(WIDTH - WIDTH_SMALL + 10,
HEIGHT - HEIGHT_SMALL + 10,
WIDTH_SMALL - 20,
HEIGHT_SMALL - 20);
viewer2 = new Viewer(canvas2);
ViewingPlatform vp2 = new ViewingPlatform();
vp2.setNominalViewingTransform();
viewer2.setViewingPlatform(vp2);
locale2.addBranchGraph(vp2);
ColorCube model = new ColorCube(0.1);
BranchGroup bgModel = new BranchGroup();
bgModel.addChild(model);
locale1.addBranchGraph(bgCube);
locale2.addBranchGraph(bgModel);
getContentPane().add(canvas2);
getContentPane().add(border);
getContentPane().add(canvas1);
}
static public void main(String[] args) {
new MainFrame();
}
}
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