Re: Performer Questions

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Fischler (src++at++rose)
Wed, 1 Mar 1995 15:01:41 -0800

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Sharon Rose Clay (Fischler) - Silicon Graphics, Advanced Graphics Dev.
src++at++sgi.com  (415) 390 - 1002  FAX: (415) 965 - 2658  MS 8U-590
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+>---- On Feb 28,  3:29pm, Hideo MIKI wrote:
> Subject: Performer Questions
->Hello,
->
->I have the following questions related to Performer application ( based 
->on perfly ) I am developping. 
->
->1. How can I get the value above a terrain ?

You want to intersect your terrain geometry with a downward
segment.  With the pfSegsIsectNode() routine, you can get the
primitive, and even point, of intersection.
Look at the pfSegsIsectNode and pfMQueryHit man pages.

->2. How do I make moving models like tank (which has some 
->   articulated part)?

You want to put the geometry of the articulated part under pfDCS node.
DCS stands for "Dynamic Coordinate System" and you can use it to transform
geometry at run time.  For a fixed sequence of movements, you may also be
interested in the pfSequence node.
Look at the man pages on these nodes for details.

->
->3. How do I use pfSmoke special effect ?

Look at the sample code in 
	/usr/src/Performer/src/sample/pguide/libpfutil/progs/smoke.c


src.

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Sharon Rose Clay (Fischler) - Silicon Graphics, Advanced Graphics Dev.
src++at++sgi.com  (415) 390 - 1002  FAX: (415) 965 - 2658  MS 8U-590
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