A Newbee Bounding Volume question

Troubleshooting physics
1

Hello JMonkeyWorld !!!



I want my car to lay on my circuit, my problem is that when I erase the two lines:

        dCircuit.setModelBound(new BoundingBox());

        dCircuit.updateModelBound();

from my BuildCircuit() code my car pass trough the circuit. It's ok with myCar/myTerrain.

My Circuit is a single 3D object curved like _/ and a BoundingBox is not the solution. I readed about TriMesh. How can I proceed ?







private void buildCircuit() {

    Circuit = loadModel("data/circuit/myfirstcircuit.jme");

    Circuit.setLocalScale(30);

    Quaternion q2 = new Quaternion();

    q2.fromAngleAxis(FastMath.PI*1.5f, new Vector3f(1,0,0));

   

    Circuit.setLocalRotation(q2);

    Circuit.setRenderQueueMode(Renderer.QUEUE_OPAQUE);

    Circuit.getLocalTranslation().set( new Vector3f (190,257,150) );

   

        dCircuit = getPhysicsSpace().createStaticNode();

   

        dCircuit.attachChild( Circuit );

     

        scene.attachChild( dCircuit );

       

        dCircuit.setModelBound(new BoundingBox());

        dCircuit.updateModelBound();



        dCircuit.generatePhysicsGeometry();

       

        scene.updateGeometricState(0, true);

       

    }







Thanks in advance !!!

2

I've read this 4 times now still don't understand what you mean.



Maybe you can clarify to the slow of us somehow ?


3

If I understood you well, you want to use triangle-accuracy collitions for your track branch of the scenery.



This is achieved changing:



dCircuit.generatePhysicsGeometry();



for this:



dCircuit.generatePhysicsGeometry(true);



I have had some problems with this, though. I

4

Thanks for your replies !



dCircuit.generatePhysicsGeometry(true) works fine!



See you !



:slight_smile: