P J Narayanan (pjn++at++cair.res.in)
Tue, 27 Oct 1998 09:58:19 -0500 (Etc/GMT)
I need to really get to some of the internal representations of Performer
for an application. Some of the requirements are:
(1) Can the database be accessed (stored to a file/converted etc)
after the culling operation from a particular viewpoint?
The objects or primitives that are culled away should be
removed and the rest should stay. Is that possible?
(2) How can we access the individual primitives (say triangles) of a
scene database? Is there a way one can access them in a systematic
way? (Say, all trianges of obj1 followed by those of obj2,
getting info about triangle meshes etc)
(3) Given a world point, is there a function that maps it to the
image point? (ie, projection, z-buffering, viewporting etc
all included) Alternatively, given a list of triangles, can
we find where the vertices map to?
I will appreciate any answers to the above questions and/or pointers to
deeper discussion on these issues.
Thanks in advance,
PJN
--------
Centre for Artificial Intelligence and Robotics +91 80 226 5609 (Phone)
Raj Bhavan Circle, High Grounds +91 80 225 5615 (Fax)
Bangalore 560 001, INDIA
URL: http://www.cair.res.in/~pjn pjn++at++cair.res.in
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