Can anyone help with these transparency problems?

Bob Gray

-----Original Message-----
From: Discussion list for Java 3D API
[mailto:[EMAIL PROTECTED]]On Behalf Of RWGRAY
Sent: Tuesday, December 25, 2001 12:13 PM
To: [EMAIL PROTECTED]
Subject: [JAVA3D] Transparency Problems


Well, I took the advise for handling my transparency problems by breaking
this object up into many separate geometry objects.  It helps a lot, but
now, with 3,168 quadArrays, I have major memory usage problems.

Also, I think there is a transparency problem.  At some orientations, I can
clearly see a patch of solid green (the color of my inner most object) when
I don't think I should be able to.

I have tried coding this object by using an OrderedGroup which gives
**major** transparency problems, even though the objects do not intersect
each other but are "simply" embedded within one another. It does use less
memory, but the transparency rendering is *so* bad that I can't do it this
way.

If anyone is interested, I have documented these problems with several jpeg
images on a web page at
http://www.rwgrayprojects.com/Java3D/Transparency/trans01.html


I sure hope someone can explain a better approach to coding this object.  Or
at least explain way Java 3D transparency is so poor.  (Yes, could be my
coding....  So I am open to suggestions.)

Does *anyone* have examples of multiple objects within one another with
transparency in Java 3D that works correctly??!!  (Without using
SCREEN_DOOR!!) I'd like to see at least *one* example that works.  (OpenGL,
Windows 2000)


Bob Gray

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