Jump to content
  • Advertisement
Sign in to follow this  
dragonknightx

[java] Java3D Coloring problem

This topic is 4173 days old which is more than the 365 day threshold we allow for new replies. Please post a new topic.

If you intended to correct an error in the post then please contact us.

Recommended Posts

Well, I finally managed to get some shapes on the screen. I have since created a small demo that displays a spinning checkerboard. Everything compiles without a hitch, and runs as expected with one exception: I end up with a bunch of vertical lines running through the board. However, when I add the stock ColorCube beside it on the scene graph (same rotation, even), the cube displays perfectly. As they say, an image is worth a thousand words: clicky (8k) If it helps, here's the code that builds the checkerboard:
  protected BranchGroup createSceneGraph()
  {
    // Generate a grid of w*h tiles, each one unit square.
    
    bg = new BranchGroup();

    // Determines if the current tile is red; if not, then it's green.
    boolean isRed = true;

    // FIXME: The colors don't match the names...(on purpose).
    final Color3f red = new Color3f(0.0f, 0.0f, 1.0f);
    final Color3f green = new Color3f(0.0f, 1.0f, 1.0f);
    
    // dim is a Dimension member variable
    for(int x = 0; x < dim.width; x++)
    {
      float xPos = -1.0f * (x / 2.0f);
      for(int y = 0; y < dim.height; y++)
      {
        float yPos = -1.0f * (y / 2.0f);
        float[] coords = new float[]{ xPos,        yPos,        0.0f,
                                      xPos + 1.0f, yPos,        0.0f,
                                      xPos + 1.0f, yPos + 1.0f, 0.0f,
                                      xPos,        yPos + 1.0f, 0.0f };
        QuadArray qa = new QuadArray(4, QuadArray.COORDINATES
                                      | QuadArray.BY_REFERENCE
                                      | QuadArray.COLOR_3);
        qa.setCoordRefFloat(coords);

        // Set the quad's color
        Color3f color = (isRed ? red : green);
        qa.setColorRefFloat(new float[]{color.x, color.y, color.z,
                                        color.x, color.y, color.z,
                                        color.x, color.y, color.z,
                                        color.x, color.y, color.z});

        // The next quad should be the opposite color
        isRed = !isRed;

        // Add the quad to the tree
        bg.addChild(new Shape3D(qa));
      }
      xPos += 1.0;
    }
    
    return bg;
  }









(For the record, I *do* know how to make RGB colors; the colors were changed to make a better screenshot, but I didn't change the names to match.) I can provide more code if needed. Like my last question, I'm sure this is something rather simple, but I can't find it; I really don't know where to start (or what to call the problem for a Google search). EDIT: Bad HTML. [Edited by - dragonknightx on May 18, 2007 1:47:01 AM]

Share this post


Link to post
Share on other sites
Advertisement
Sign in to follow this  

  • Advertisement
×

Important Information

By using GameDev.net, you agree to our community Guidelines, Terms of Use, and Privacy Policy.

We are the game development community.

Whether you are an indie, hobbyist, AAA developer, or just trying to learn, GameDev.net is the place for you to learn, share, and connect with the games industry. Learn more About Us or sign up!

Sign me up!