[JAVA3D] Fw: GeometryArray: cannot access in BY_REFERENCE mode

[Fco. Javier Ridruejo]

Hello,

I'm doing several modifications to a Java3D 1.2 program. This works right
under Java3D 1.2 but when using 1.3 it throws the following exception:

GeometryArray: cannot directly access data in BY_REFERENCE mode

This is the code where the program crashes:

public MyBoundingBox ComputePieceBounds()
 {
  int numVertices;
  int contadorVertices;
  float xActual;
  float yActual;
  float zActual;
  float minX = 0.0f;
  float maxX = 0.0f;
  float minY = 0.0f;
  float maxY = 0.0f;
  float minZ = 0.0f;
  float maxZ = 0.0f;
  int numHijos;
  Point3f puntoActual = new Point3f();
  Shape3D sp3dBB;

  minX = Float.MAX_VALUE;
  maxX = Float.MIN_VALUE;
  minY = Float.MAX_VALUE;
  maxY = Float.MIN_VALUE;
  minZ = Float.MAX_VALUE;
  maxZ = Float.MIN_VALUE;
  numHijos = myScene.numChildren();
  System.out.println("numHijos "+numHijos);

  //un fichero obj puede tener un monton de shape3D debido a
  //los nodos group
  for(int j =0;j<numHijos;j++)
  {
    sp3dBB = (Shape3D)myScene.getChild(j);

   TriangleStripArray tsa = (TriangleStripArray)sp3dBB.getGeometry();
   numVertices = tsa.getVertexCount();
   contadorVertices = 0;
   while(contadorVertices < numVertices)
   {

//Begin: Here the program fails
    tsa.getCoordinate(contadorVertices,puntoActual);
//End: Here the program fails

    xActual = puntoActual.x;
    System.out.println("punto actual" +puntoActual);
    yActual = puntoActual.y;
    zActual = puntoActual.z;
    //System.out.println(puntoActual);
    if(xActual < minX)
     minX = xActual;
    if(xActual > maxX)
     maxX = xActual;
    if(yActual < minY)
     minY = yActual;
    if(yActual > maxY)
     maxY = yActual;
    if(zActual < minZ)
     minZ = zActual;
    if(zActual > maxZ)
     maxZ = zActual;
    contadorVertices = contadorVertices + 1;
   }
  }
  return new MyBoundingBox(new Point3d(new Point3f(minX,minY,minZ)),
         new Point3d(new Point3f(maxX,maxY,maxZ)));
 }

I have browsed internet and I have found that this could be
a bug in java3D 1.3. If so, I would like to know another way to
do the same avoiding this bug.


I hope you can help me.
Thank you very much in advance.

Fco. Javier Ridruejo
Neofis NT

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