Hi folks,
I want to build a server application, that sends a set of
IndexedTriangleArrays to an applet. To minimize the amount of data, I
tried to use a compressed geometry build by the
com.sun.j3d.utils.compression classes. But I faced a lot of problems.
First, it seems, that the normals or normal indices get lost or
corrupted.
Second, somehow the geometry is scaled down.
Third, the compression calculation is awfully slow. On my 233 MHZ PII
running under linux with jdk1.2.2-RC3 it takes approximately 3 minutes
for 30 IndexedTriangleArrays (each ~2000 triangles I guess) with
normals and per vertex colors. On a SGI octane with 300 MHZ R12000
processor, which I intended to use as the server, it even takes
roughly 5 times longer!!! That's clearly to slow to consider.
Since for both linux and IRIX up to now there is just java3d-1.1.1
available, which comes without the compression utility classes, I
replaced the j3dutils.jar file with the j3dutils.jar of a Win95
java3d-1.1.2 installation. My question is, is that legal. If it is,
can someone explain to me, why the geometry gets corrupted.
Thanks,
Ingo Brunberg
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