I looked at the image... yes, the lighting and shadows are impressive
looking, but notice that there is no shadow beneath the character. The
shadows are probably precomputed or are part of the texture. This is
one way of cheating to get shadows, but of course is not real-time.
Although I am interested in know exactly what method the team used
because if they did make textures that included textures, they would
have to be large enough to cover large (polygonal) areas.
Lee
-----Original Message-----
From: Yazel, David J. [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, August 02, 2000 12:03 PM
To: [EMAIL PROTECTED]
Subject: Re: [JAVA3D] Wierd behavior
Thanks Lee!
Anyone know how these guys are rendering this image in java3d? Has some
impressive lighting and shadows:
http://www.hta-bi.bfh.ch/Projects/glymp3d/overview.html
P.S.
Lee are you planning on posting your loader sometime, sounds like good
work!
Dave Yazel
> ----------
> From: J. Lee Dixon[SMTP:[EMAIL PROTECTED]]
> Reply To: Discussion list for Java 3D API
> Sent: Wednesday, August 02, 2000 11:39 AM
> To: [EMAIL PROTECTED]
> Subject: Re: [JAVA3D] Wierd behavior
>
> Dave,
>
> First, if certain items in the scene are not reacting to lights, then
> they may have one of several things wrong. For objects to be lit,
they
> must:
> 1) have normals specified for each vertex
> 2) have lighting enabled in their material
> 3) have colors for each lighting type (ambient, direct, reflective,
> emissive)
> 3) the light must be enabled
> 4) the object must be within the influence region of the light
>
> As for the shadow casting, no real-time API (that I know of)
_directly_
> supports casting of shadows (including Java3D). It is computationally
> expensive and difficult to write/run a generic real-time shadow
casting
> algo.
>
> As for the 3DS file texturing, I found the NCSA loader to be missing
> that and many other things. I had to go off and write my own by
looking
> at other loaders and reference material; currently I've gotten grouped
> hierarchy, pivot points, lights, textures, materials, and ANIMATIONS
to
> work. I started by looking at Load3DS written by Rycharde Hawkes (see
> the loader archive page http://www.billday.com/Java3DArchive/).
>
> Good luck,
>
> Lee
>
> J. Lee Dixon
> Software Engineer
> SAIC - Celebration, FL
> [EMAIL PROTECTED]
>
>
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