GetRaycastIntersections() weirdness

Date : Tue, 30 Oct 2007 16:38:25 +0100
To : XSI(at)Softimage.COM
From : Philipp Oeser <philipp.oeser(at)liga01.de>
Subject : GetRaycastIntersections() weirdness
Hi there,
I have a car setup here and I use "GetRaycastIntersections()" inside a SCOP as a basis to control wheel positions for a car driving on a uneven bumpy road. "GetRaycastIntersections()" is a really nice addition btw...so much uses to it... :-)
Anyway, I am experiencing some weird behaviour with it: It works allright when I intersect my GroundMesh, I get the right data and everything.
But I get a considerable speedup (about 4x) for my SCOP when I shrinkwrap another object to the GroundMesh - which is totally unrelated to my carsetup and the SCOP -.


I am just guessing here:
Maybe the shrinkwrap prevents the SCOP from building the acceleration cache on each update? (because it uses a similar/same cache already?)
How could I prevent the cache to be buit everytime I update my SCOP? (4x speedup ?=? 4 calls to GetRaycastIntersections() for the 4 wheels btw..)


Any hints welcome and thanx again for this great tool

Philipp

--


LIGA_01 COMPUTERFILM GmbH Philipp Oeser

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