Hi Desiree,
BoundingLeaf is used as scheduling bound in this test program but
it is not attach to scenegraph. It is an application error to do so.
However Java3D can handle it better by disable the behavior or
throw a more meaning Exception which bug 4782718
- NPE if boundingLeaf in SchedulingBoundLeaf not attach to scenegraph
is submitted for this.
Thanks.
- Kelvin
--------------
Java3D Team
Sun Microsystems Inc.
Desiree Hilbring wrote:
Hi,
I try to add a MouseTranslate Behavior in a scene, where the view branch
graph is not created using SimpleUniverse.
The program teminates with the following exception:
java.lang.NullPointerException
at
javax.media.j3d.BehaviorRetained.updateTransformRegion(BehaviorRetained.java:458)
at
javax.media.j3d.BehaviorStructure.activateBehaviors(BehaviorStructure.java:347)
at
javax.media.j3d.BehaviorStructure.processMessages(BehaviorStructure.java:209)
at
javax.media.j3d.StructureUpdateThread.doWork(StructureUpdateThread.java:83)
at javax.media.j3d.J3dThread.run(J3dThread.java:250)
That somewhere in Java3D and means nothing to me?
What am I doing wrong?
A testcase is attached.
Outcommenting of the line
world_object_group.addChild(trans);
leads to a running programm, ofcourse without behavior.
Desiree
oooooooooooooooooooooooooooooooooooooooooooooooo
Desiree Hilbring
Institut fuer Photogrammetrie und Fernerkundung
Universitaet Karlsruhe, Germany
email: [EMAIL PROTECTED]
# 0721 6083676
oooooooooooooooooooooooooooooooooooooooooooooooo
------------------------------------------------------------------------
/*****************************************************************************
* J3D.org Copyright (c) 2000
* Java Source
*
* This source is licensed under the GNU LGPL v2.1
* Please read http://www.gnu.org/copyleft/lgpl.html for more information
*
* This software comes with the standard NO WARRANTY disclaimer for any
* purpose. Use it at your own risk. If there's a problem you get to fix it.
*
****************************************************************************/
// Standard imports
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.media.j3d.*;
import javax.vecmath.*;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.HashMap;
import com.sun.j3d.utils.behaviors.mouse.*;
import com.sun.j3d.utils.geometry.ColorCube;
public class NavTest extends DemoFrameDesTest
{
// Achtung front und back hardcodiert
private static final double BACK_CLIP_DISTANCE = 3000.0;
private static final double FRONT_CLIP_DISTANCE = 1;
/** The main canvas that we are navigating on */
private Canvas3D navCanvas;
/** Global material instance to use */
private Material material;
/** Global polygon attributes to use */
private PolygonAttributes polyAttr;
/** TG that holds the user view position. Used when new terrain set */
private TransformGroup gndViewTransform;
/** The color interpolator for doing height interpolations with */
//private ColorInterpolator heightRamp;
/**
* Construct a new demo with no geometry currently showing, but the
* default type is set to quads.
*/
public NavTest()
{
super("NavTest");
navCanvas = createCanvas();
Panel p0 = new Panel(new GridLayout(1, 2));
p0.add(navCanvas);
add(p0, BorderLayout.CENTER);
JPanel p1 = new JPanel(new FlowLayout());
buildScene();
// Now set up the material and appearance handling for the generator
material = new Material();
material.setLightingEnable(true);
polyAttr = new PolygonAttributes();
polyAttr.setCapability(PolygonAttributes.ALLOW_MODE_WRITE);
polyAttr.setCullFace(PolygonAttributes.CULL_NONE);
polyAttr.setBackFaceNormalFlip(true);
polyAttr.setPolygonMode(PolygonAttributes.POLYGON_FILL);
loadTerrain(new String(),new String());
}
//----------------------------------------------------------
// Internal convenience methods
//----------------------------------------------------------
/**
* Build the scenegraph for the canvas
*/
private void buildScene()
{
Color3f ambientBlue = new Color3f(0.0f, 0.02f, 0.5f);
Color3f white = new Color3f(1, 1, 1);
Color3f black = new Color3f(0.0f, 0.0f, 0.0f);
Color3f blue = new Color3f(0.00f, 0.20f, 0.80f);
Color3f specular = new Color3f(0.7f, 0.7f, 0.7f);
VirtualUniverse universe = new VirtualUniverse();
Locale locale = new Locale(universe);
BranchGroup view_group = new BranchGroup();
BranchGroup world_object_group = new BranchGroup();
PhysicalBody body = new PhysicalBody();
PhysicalEnvironment env = new PhysicalEnvironment();
Point3d origin = new Point3d(0, 0, 0);
BoundingSphere light_bounds =
new BoundingSphere(origin, BACK_CLIP_DISTANCE);
DirectionalLight headlight = new DirectionalLight();
headlight.setColor(white);
headlight.setInfluencingBounds(light_bounds);
headlight.setEnable(true);
ViewPlatform gnd_camera = new ViewPlatform();
Transform3D angle = new Transform3D();
gndViewTransform = new TransformGroup();
gndViewTransform.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
gndViewTransform.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
gndViewTransform.addChild(gnd_camera);
gndViewTransform.addChild(headlight);
View gnd_view = new View();
gnd_view.setBackClipDistance(BACK_CLIP_DISTANCE);
gnd_view.setFrontClipDistance(FRONT_CLIP_DISTANCE);
gnd_view.setPhysicalBody(body);
gnd_view.setPhysicalEnvironment(env);
gnd_view.addCanvas3D(navCanvas);
gnd_view.attachViewPlatform(gnd_camera);
//System.out.println("front clip dist "+gnd_view.getFrontClipDistance());
//System.out.println("back clip dist "+gnd_view.getBackClipDistance());
view_group.addChild(gndViewTransform);
TransformGroup testBoxTG = new TransformGroup();
Transform3D testBoxT3d = new Transform3D();
testBoxT3d.setTranslation(new Vector3f(50,3510,-50));
testBoxTG.setTransform(testBoxT3d);
testBoxTG.addChild(new ColorCube(10));
world_object_group.addChild(testBoxTG);
BoundingSphere mouseBounds = new BoundingSphere(new Point3d(),Float.MAX_VALUE);
BoundingLeaf boundingLeaf = new BoundingLeaf(mouseBounds);
/*
ViewerNavigationBehavior rotate = new ViewerNavigationBehavior(gndViewTransform,gnd_view);
rotate.setSchedulingBoundingLeaf(boundingLeaf);
*/
MouseTranslate trans = new MouseTranslate(MouseBehavior.INVERT_INPUT);
trans.setTransformGroup(gndViewTransform);
trans.setSchedulingBoundingLeaf(boundingLeaf);
/*
WorldVolume wv = new WorldVolume();
MouseZoomAdjustView zoom = new MouseZoomAdjustView(MouseBehavior.INVERT_INPUT,gnd_view,wv);
zoom.setTransformGroup(gndViewTransform);
zoom.setSchedulingBoundingLeaf(boundingLeaf);
*/
//world_object_group.addChild(rotate);
world_object_group.addChild(trans);
//world_object_group.addChild(zoom);
// Add everything to the locale
locale.addBranchGraph(view_group);
locale.addBranchGraph(world_object_group);
}
/**
* Load the terrain and get it read to roll. If the texture file is not
* specified then no texture will be loaded and colour information is
* used instead.
*
* @param filename The name of the terrain file
* @param textureName The name of the texture file, or null
*/
private void loadTerrain(String filename, String textureName)
{
//System.gc();
System.out.println("Loading terrain file. Please wait!!!!!!!!!!!!!!!!!!!!");
Point3d p3dmin = new Point3d();
Point3d p3dmax = new Point3d();
float[] origin = new float[3];
//terrain.getCoordinate(origin, 1, 1);
origin[0]=50;
origin[1]=3500;
origin[2]=-50;
System.out.println("origin[] "+origin[0]+" "+origin[1]+" "+origin[2]);
Transform3D angle = new Transform3D();
// setup the top view by just raising it some amount and we want
Vector3f pos = new Vector3f();
pos.x = origin[0];
pos.y = origin[1];
pos.z = origin[2]+100;
angle.setTranslation(pos);
System.out.println("Building landscape 3");
gndViewTransform.setTransform(angle);
System.out.println("Building landscape 4");
/*
Matrix3f mtx = new Matrix3f();
Vector3f orient = new Vector3f(0, 0, -1);
angle.get(mtx, pos);
mtx.transform(orient);
*/
}
public static void main(String[] argv)
{
NavTest demo = new NavTest();
demo.setSize(600, 400);
demo.setVisible(true);
}
}
------------------------------------------------------------------------
/*****************************************************************************
* J3D.org Copyright (c) 2000
* Java Source
*
* This source is licensed under the GNU LGPL v2.1
* Please read http://www.gnu.org/copyleft/lgpl.html for more information
*
* This software comes with the standard NO WARRANTY disclaimer for any
* purpose. Use it at your own risk. If there's a problem you get to fix it.
*
****************************************************************************/
// Standard imports
import java.awt.*;
import java.awt.event.*;
import javax.media.j3d.Canvas3D;
import javax.media.j3d.GraphicsConfigTemplate3D;
// Application Specific imports
// none
/**
* Demonstration of a mouse navigation in a world.
*
* @author Justin Couch
* @version $Revision: 1.1 $
*/
public class DemoFrameDesTest extends Frame implements WindowListener
{
public DemoFrameDesTest(String title)
{
super(title);
setLocation(30, 10);
addWindowListener(this);
}
/**
* Creates a new canvas each time this is called.
*
* @return A new canvas instance
*/
protected Canvas3D createCanvas()
{
Canvas3D canvas;
GraphicsConfigTemplate3D template = new GraphicsConfigTemplate3D();
template.setDoubleBuffer(template.REQUIRED);
GraphicsEnvironment env =
GraphicsEnvironment.getLocalGraphicsEnvironment();
GraphicsDevice dev = env.getDefaultScreenDevice();
//System.out.println("env "+env.toString());
//System.out.println("dev "+dev.toString());
//System.out.println("template "+template.toString());
canvas = new Canvas3D(dev.getBestConfiguration(template));
canvas.setStereoEnable(false);
canvas.setDoubleBufferEnable(true);
//canvas.setDoubleBufferEnable(false);
System.out.println("Canvas "+canvas);
return canvas;
}
/**
* Ignored
*/
public void windowActivated(WindowEvent evt)
{
}
/**
* Ignored
*/
public void windowClosed(WindowEvent evt)
{
}
/**
* Exit the application
*
* @param evt The event that caused this method to be called.
*/
public void windowClosing(WindowEvent evt)
{
System.exit(0);
}
/**
* Ignored
*/
public void windowDeactivated(WindowEvent evt)
{
}
/**
* Ignored
*/
public void windowDeiconified(WindowEvent evt)
{
}
/**
* Ignored
*/
public void windowIconified(WindowEvent evt)
{
}
/**
* Ignored
*/
public void windowOpened(WindowEvent evt)
{
}
}
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