> Date: Thu, 12 Apr 2001 16:03:19 +0530
> From: Niraj Patkar <[EMAIL PROTECTED]>
>
> > In J3D 1.3 the CompressionStream class will provide methods for
> > retrieving the bounding box of the compressed geometry in both
> > normalized quantization coordinates and the original model coordinates.
>
> When is v1.3 expected? Any idea?
I'm not real sure, I would think between 6-12 months. Somebody probably has an
official estimate, but I'm not that person...
> > None of the public fields of the CompressedGeometryHeader class have
> > been deprecated as far as I can see.
>
> I was refering to following fields which are now deprecated,
>
> public double scale
> public double xOffset
> public double yOffset
> public double zOffset
I went through some old revisions of the code, and it appears that these fields
were in an early version of Java 3D circa late 1997. They were deprecated in
July 1998 and removed in June 1999.
The fields were not intended as a way for an application to obtain the scale
and offset, but as a way for the application to specify to the renderer what
the scale and offset should be. They were deprecated and then removed since we
believed CompressedGeometry should be positioned and scaled using a Transform3D
in order to be consistent with every other leaf node in Java3D.
In November 1999 the lowerBound and upperBound fields were added so that an
application could specify an accurate tight bounds for the compressed geometry
without J3D needing to decompress it when using a graphics accelerator with our
hardware decompression implementation. We also revised GeometryCompressor to
set these fields itself, but an application using a different compressor would
still need to set them to avoid getting the default maximum bounds of (-1 .. 1)
in each dimension.
-- Mark Hood
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