The problem is Z-buffering. The video card is attempting to resolve
objects in the Z dimension, which is the distance along your
line-of-sight. The perspective projection algorithm is non-linear in
the z dimension. If you think about this in the real world, it makes
sense. You can see a space of an inch between two objects if they are
close to you, but not if those two objects are a mile away. Likewise,
your video card cannot distinguish between the two objects at further
ranges.
Options? Well, it depends on your model. Perhaps at a certain range
you switch off one of the objects. An example would be that you can't
see a door handle at a long distance, but you can up close. Again, the
answer really depends on your application.
I suggest picking up a good computer graphics book for better
explanations and options.
-Lee
J. Lee Dixon
SAIC - Celebration, FL
407-566-1438
[EMAIL PROTECTED] AOL: LeeOrlando
-----Original Message-----
From: Joao Henrique [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, January 09, 2001 10:30 PM
To: [EMAIL PROTECTED]
Subject: [JAVA3D] Interference between objects
Dear friends,
I have some simple objects in my scenario, like, for example, a plane
and a
box. The box lays very close to the plane, almost touching it. When the
viewer is near the objects they are just perfect, but as the viewer gets
far
from the objects, a kind of interference starts to happen. The box is
green
and the plane is gray, but what we see is a mixture of both colors, in
stripes. This happens to other objects in my scenario. What could be
causing
such interference? Does anybody know something about it?
Thanks!
João Henrique de A. e Silva
ITA - Instituto Tecnológico de Aeronáutica
Electronics Engineering Student
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