Hi,
I was using Java 3D 1.1.3 (OpenGL version). I'm trying to isolate the
problem into a simpler test case, since the code in which the problem
occurred can't be released yet. I'll try to make up a smaller piece of
code that can reproduce the problem. Unfortunately, I couldn't yet
reproduce the case with a simple scene graph, with just one line
connecting the centers of two spheres...
The problem cropped up when I had a LineArray, which had some lines
connecting two points which were both inside two (different) closed
objects. Such lines were not displayed at all, though there were portions
of those lines that ought to have been visible.
Thanks for your time...I'll send the test case as soon as it's ready...
Regards,
Manu.
On Thu, 28 Sep 2000, Kelvin Chung wrote:
> Hi Manu,
>
> >X-Unix-From: [EMAIL PROTECTED] Sun Sep 24 13:48:52 2000
> >X-Authentication-Warning: eta.cis.ohio-state.edu: varghese owned process doing
> -bs
> >MIME-Version: 1.0
> >Date: Sun, 24 Sep 2000 16:25:30 -0400
> >From: Manu Eapen Varghese <[EMAIL PROTECTED]>
> >Subject: [JAVA3D] Intersecting polygons
> >To: [EMAIL PROTECTED]
> >
> >Hello,
> >
> >In my 3d model, I have a line whose two end points are hidden by other
> >objects (polygons). But the line has a middle portion that should be
> >visible. But Java 3D does not render the line at all.
> >
> >The same thing happens when I have a polygon whose end-points are ALL
> >hidden, but a middle portion of the polygon should be visible. Again, Java
> >3D is not rendering such polygons at all.
> >
> >Is there any flag that I can set somewhere that causes Java 3D to take of
> >such polygon/polygon and polygon/line intersections correctly ? Or is it
> >an inherent limitation of Java 3D ? Or am I doing something wrong ?
> >
> >If it is a limitation of Java 3D, what would be the best way around the
> >problem ?
> >
>
> Which version of Java3D (D3D/OpenGL ?) and what kind of
> graphics card are your using ?
> I think this is a driver bug. Please sent us a test
> case to verify.
>
> Thanks.
>
> - Kelvin
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