Hello.

I've constructed one 3DS as depicted below. If made transparent (like in the picture) I get the wrong polygon on top. The model consists of 4 walls and a floor (no planes).



Did I make something wrong in the 3DS, or is this a render issue?

Been testing a while now. Using worldFrame.repaint() in the paint method of the applet is not only causing flicker in the browser with GL enabled, but in all circumstances: software and hardware render + appletviewer and browser.

    public void paint(Graphics g) {
        if (worldFrame!=null)
            worldFrame.repaint();
    }

    public void update(Graphics g) {
        paint(g);
    }
Back to paint() the flicker only shows in browser using hardware render.

    public void paint(Graphics g) {
        if (worldFrame!=null)
            worldFrame.paint(null);
    }

    public void update(Graphics g) {
        paint(g);
    }

Hi Paul, and once again thanks!

I've with interest read ur posts, and implemented what you suggested.

My applet:
    public void paint(Graphics g) {
        if (worldFrame!=null)
            worldFrame.repaint();
    }

    public void update(Graphics g) {
        paint(g);
    }
And the worldFrame which inherits from JPanel:

        MyAppletClass.my_static_applet_instance.repaint();

        if (buffer.usesRenderer(IRenderer.RENDERER_OPENGL))
            if (cGLScene!=null) {
                buffer.displayGLOnly();
                cGLScene.repaint();
            }
I've tried calling "MyAppletClass.my_static_applet_instance.repaint();" before and after I've requested a canvas repaint. But same result; flicker on repaint events caused by "dirty regions".

Futhermore I downloaded ur zipped gears example from above, and used primitives instead of 3DS (some how they were currupted). So changed 3 lines like so: redGear = Primitives.getBox(3,3);. This program is also causing flicker within the browser on "dirty region" update. Since you're rendering all the time, its just a matter of short time before the "near white" color, where the applet is running, is updated with a new image. But it is truely flickering as much as my applet.

Could we used ur program as reference?

Edit: I recall to having loaded your gears example from your webpage, but not the flickering. Do you still have it online with an appletloader?

Removing that line is actually only makes the problem worse, like the image is only shown ca. each 3rd time.

According to the java applet doc, I'm advised to put in the super call at the top:

Paints the container. This forwards the paint to any lightweight components that are children of this container. If this method is reimplemented, super.paint(g) should be called so that lightweight components are properly rendered. If a child component is entirely clipped by the current clipping setting in g, paint() will not be forwarded to that child.

You sugguest jPCT to autoscale it?

In my program billboards sometimes work as labels which should be selectable. The label surrounds some text, and fits hardly into a 2^x texture size. So the transparent part of the texture (outside the label) becomes selectable :-(

Argh... thx