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1  Java Game APIs & Engines / Java 3D / Re: First person view? on: 2005-01-09 18:09:33
Forgot to say, that I added this aswell.


SimpleUniverse u = new SimpleUniverse( c ) ;

vpTrans= u.getViewingPlatform().getViewPlatformTransform();
2  Java Game APIs & Engines / Java 3D / Re: First person view? on: 2005-01-09 18:07:59
I have tried something but not with using a seperate class but I still can't get anything to work.  I'm getting the following error when running the program.


Exception occurred during Behavior execution:
java.lang.NullPointerException
       at javax.media.j3d.TransformInterpolator.processStimulus(TransformInterp
olator.java:156)
       at javax.media.j3d.BehaviorScheduler.doWork(BehaviorScheduler.java:172)
       at javax.media.j3d.J3dThread.run(J3dThread.java:250)


This is my code that I am using for the camera.


public RotPosPathInterpolator mCameraPath;
public TransformGroup tgCamera;
public TransformGroup vpTrans;

//setup a camera transform group
Transform3D tCameraTransform = new Transform3D( );
tCameraTransform.set(new Vector3d(0.0f,0.0f,0.0f));
tgCamera = new TransformGroup(tCameraTransform);
tgCamera.setCapability( TransformGroup.ALLOW_TRANSFORM_WRITE );
...
...
mCameraPath = new RotPosPathInterpolator (
                            alpha1,
                            vpTrans ,
                               axisOfRotPos1,
                               knots1,
                               quats1,
                               positions1) ;

BoundingSphere bounds1 = new BoundingSphere( new Point3d( 0.0 , 0.0 , 0.0 ) , 1000.0 ) ;
mCameraPath.setSchedulingBounds( bounds );  
           
tgCamera.addChild( mCameraPath );
                             
sceneRoot.addChild( tgCamera );


Does anyone have an idea why I am getting that message or what I am doing wrong?

Thanks
3  Java Game APIs & Engines / Java 3D / First person view? on: 2005-01-07 09:44:22
I have an object moving along a surface using a rotpospathinterpolator.

How do I get it so that the viewer is moving with the ball, ie. in first person view. Is it something to do with the viewplatform?

If anyone can help, that would be great.

Thanks
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