Jenny Zhao (zhz++at++dandan.engr.sgi.com)
Wed, 16 Jul 1997 11:29:41 -0700
in performer 2.2, there will be a pfdu routine that builds
an even grid ASD data structure. the file is pfdBuildASD.c
based on this routine, 2.2 will provide DEM, DTED, ARCINFO,
and sgi black and white image file loaders.
once you receive 2.2, you will be able to load
the square DEM directly into perfly or save it as a .pfb file.
granted that the loader is just a simple example of
how to construct the ASD data structures, it will
get you started.
since it is very simple, uniform grid like structure,
you will see very obvious morphings as you fly.
we encourage people to incorporate their own
favorite terrain modeling algorithms into their ASD constructions.
we will also ship a simple sample program, simpleASD.c in pguide,
to demonstrate how ASD triangles morph and fit together.
Jenny Zhao
zhz++at++engr.sgi.com
415 933-5091 (Voice)
415 965-2658 (Fax)
Silicon Graphics - IRIS Performer
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