[JAVA3D] addition to my previous mail : picking

[Tria]

I've also tried to go to those shape3ds directly, like this :

 

 SceneGraphPath sc = new SceneGraphPath();
 while ((!found) && (i<=5))
 { objShape = (Shape3D) SphereObj.getChild(i);
   if (objShape != null)
   { Transform3D tr = new Transform3D();
     objShape.getLocalToVworld(tr);
     double[] distance = new double[3];
     found = objShape.intersect(sc,pickRay,distance);
   }
   i++;
 }

No intersection happened, but those shape3d are not null anyway.

I made each shape3d for area by constructing trianglestriparray for geometry. I got coordinates for this geometry by finding first rho and theta.

 

this is one example of that shape3d's construction :

 

    // construct triangle array
    int[] stripLength = {continent[i].NumVertices};
    TriangleStripArray geoNA = new TriangleStripArray(continent[i].NumVertices,TriangleStripArray.NORMALS|TriangleStripArray.COORDINATES|TriangleStripArray.TEXTURE_COORDINATE_2,stripLength);
    geoNA.setCapability(TriangleStripArray.ALLOW_COORDINATE_READ);
    geoNA.setCapability(TriangleStripArray.ALLOW_INTERSECT);
    // coordinates
    // for each pair of coordx and coordy
    for (int k=0;k<=continent[i].NumVertices-1;k++ )
    { //coordx
      s =  (double) (continent[i].coordx[k]/width);
      theta = (s/ds) * dtheta;

 

   file://coordy
   t = (double) (continent[i].coordy[k]/height);
   rho = ((divisions-1) - (t/dt)) * drho;

 

   vx = -Math.sin(theta) * Math.sin(rho);
   vy = Math.cos(theta) * Math.sin(rho);
   vz = sign * Math.cos(rho);
   Point3d coords = new Point3d(vx,vy,vz);
   geoNA.setCoordinate(k,coords);
   Point2f tc = new Point2f((float)s,(float)t);
   geoNA.setTextureCoordinate(k,tc);
    } // end of for

 

    Shape3D shapeNA = new Shape3D(geoNA);
    shapeNA.setPickable(true);
    shapeNA.setCapability(Shape3D.ALLOW_LOCAL_TO_VWORLD_READ);
    shapeNA.setUserData(continent[i]);
    this.addChild(shapeNA);

 

please tell me what's wrong with this. I've read through all tutorial and specification but still I got difficulty with this.

 

Thanks

Tria