Wouldn't it be easy if the code for calcmindistance would return the distance and the object related to that distance? That would make picking much easier (and less lines of code)

public float calcMinDistance(SimpleVector paramSimpleVector1, SimpleVector paramSimpleVector2, float paramFloat)
  {
    Object3D localObject3D = null;
    float f1 = 3.4028235E+38F;
    for (int i = 2; i < this.objectList.size(); ++i)
    {
      localObject3D = this.objectList.elementAt(i);
      if ((!(localObject3D.isPotentialCollider)) || ((!(localObject3D.isMainWorld)) && (localObject3D.oneSectorOnly) && (Config.useFastCollisionDetection) && (localObject3D.hasBoundingBox) && (localObject3D.rayIntersectsAABB(paramSimpleVector1, paramSimpleVector2, true) >= paramFloat)))
        continue;
      float f2 = localObject3D.calcMinDistance(paramSimpleVector1, paramSimpleVector2, paramFloat);
      if (f2 >= f1)
        continue;
      f1 = f2; <- save object
    }    if (f1 != 3.4028235E+38F)
      return f1; <- return array of object and distance
    return 1.0E+012F;
  }

just a suggestion ofcourse

Hey, me again, still doing modifications on that project. Hit a snatch though, whenever I compile an object Interact2d code will give problems (I need to compile the objects to use shaders btw)

For example, following code will still work:

//naar 3d coordinaten
    SimpleVector position = new SimpleVector(Interact2D.reproject2D3D(
            camera, buffer, x, y));
   
    //naar world space coordinaten
    position.matMul(camera.getBack().invert3x3());
    position.add(camera.getPosition());
   
    SimpleVector direction = position.calcSub(camera.getPosition()).normalize();
    float distance = world.calcMinDistance(position, direction, 10000);
   
    SimpleVector collisionPoint = new SimpleVector(direction);
    collisionPoint.scalarMul(distance);
    collisionPoint.add(position);
   
    if ((e.getModifiers() & InputEvent.BUTTON1_MASK) == InputEvent.BUTTON1_MASK)
    {
   
    if(distance != Object3D.COLLISION_NONE)
    {



It will report a collision, however, when I request the ID of the polygon that has been hit the result is null

position = new SimpleVector(Interact2D.reproject2D3D(
                camera, buffer, x, y));
        int[] is = Interact2D.pickPolygon(world.getVisibilityList(), position, Interact2D.EXCLUDE_NOT_SELECTABLE);
        int t = Interact2D.getObjectID(is);

Any idea what is going wrong?

This thread is a split from here: http://www.jpct.net/forum2/index.php/topic,1462.0.html


- ATM I called getpixels in the main thead, aka:

public void init()
   {
   

       ........        
       new Thread(this).start();
   }

public void paint(Graphics g)
   {        
       super.paint(g);
       
       .....

       // render the world onto the buffer:
       world.renderScene(buffer);
       world.draw(buffer);
       buffer.update();
       ......

       buffer.getPixels();
       buffer.displayGLOnly();

       //output
       rendercanvas.repaint();
}

public void run()
   {
    while (loop)
       {
    if (mouseoverleftturn && mousedown)
        {    
        turnLeft();
        }
        else if (mouseoverrightturn && mousedown)
        {
        turnRight();
        }
   
           this.repaint();
           try
           {
               Thread.sleep(16);
           }
           catch(Exception e)
           {
               //Don't care...
           }
       }
   }

I assume I should move the getPixels() call out of the paint method and into another thread? If I do that, would it be synchronized with the update method of the buffer?

- It was more a general question, atm I load the 3DS file directly from the server, however the 3DS contains references to textures which don't seem to work. But the textures have to be bumpmapped anyway, so I guess I can't just use the loadobject method and expect it to work . Will have to put some work in that one

Hey all,

First of all, thanks for this great framework, I started the project in Java3D but quickly became frustrated. This framework made it all a lot easier.
Also thanks Paul for making all the examples, they helped a lot .

Now, the project I made can be found on http://www.freedownloads.be/bloxsystemsapplet/test.html (temp link, you need a decent resolution to view the applet). It's for a manufacturer of modular stands (for expo's and stuff). You can build and texture stands, save them and order the materials right from the java applet.

It works alright but I have a few questions left:

- for the "request quote" functionality I would like to include a render of the world as an image, however when I call getPixels or getOutputBuffer on the FrameBuffer the entire program freezes. I use the opengl mode with enableGLCanvasRenderer.
- The 3DS file are stored in a mysql database blob field and sent on request to the builder. Can anyone give me any tips on how to load the 3DS file with textures in this way? I thought about making a zip of the 3DS file + textures, download it to the local PC, unzip and load from there. Sounds like a good plan?