Hi,
J.P. Delport wrote:
Hi,
Jean-Sébastien Guay wrote:
Hi Ulrich,
Warning:: Picked up error in TriangleIntersect
(-1.81147 0.476811 -0.118829, -1.78078 0.471588 -0.0661082, -1.79068
0.886959 -0.0813922)
(1.#QNAN, 1.#QNAN, 1.#QNAN)
Warning:: Picked up error in TriangleIntersect
(-1.79068 0.886959 -0.0813922, -1.78078 0.471588 -0.0661082, -1.78498
This won't help you directly, but as a first step in identifying the
source of the problem, the one time I've seen this error is when some
objects were moved too far from the origin (to DBL_MAX in this
case...). The LineSegmentIntersector at that time used floats, so when
DBL_MAX was truncated to a float, it gave QNAN as above, and I got
similar messages. And, as you describe, the messages would be printed
so often that the application slowed to a crawl.
You could scrutinize the placement of objects which you're picking. If
there are any objects which might move very far away, or any object
you don't want to pick against actually, use nodemasks to prevent the
IntersectionVisitor from visiting them.
Then again, your problem might be caused by something completely
different. It's pretty much a shot in the dark... If you have access
to the OSG sources and a debug OSG binary, place a breakpoint where
the error message is printed, then run the simulation and try to
reproduce the problem. When it breaks, it might at least tell you
which node was being tested for intersection, and in which circumstances.
Hope this helps,
A colleague of mine encountered something similar, it was caused in an
intersector by converting small doubles to floats which then became 0's.
I've asked him for the details and will post asap.
Two things you could try.
1) Attached is my colleague's modified IntersectVisitor.cpp, there is a
check for the size of TriangleIntersect.
2) You could try make the "struct TriangleIntersect" in
IntersectVisitor.cpp use Vec3d instead of Vec3.
Let us know if either works.
regards
jp
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