Search found 456 matches

by Flix
Sun Apr 20, 2008 9:14 am
Forum: General Bullet Physics Support and Feedback
Topic: Soft Bodies: btCompoundShapes interaction and raycast
Replies: 2
Views: 1755

Soft Bodies: btCompoundShapes interaction and raycast

I don't know if the "Soft Body" part of Bullet is complete or not (BTW: many compliments to its developer/s, the demo looks impressive to me). Anyway I'd like to know: 1) btCompoundShapes don't seem to interact with soft bodies at all according to my (newbie) experiments with a cloth patch. Is this ...
by Flix
Fri Mar 07, 2008 3:16 pm
Forum: General Bullet Physics Support and Feedback
Topic: Different kind of reactions with different kind of objects
Replies: 11
Views: 7018

Re: Different kind of reactions with different kind of objects

I've made some quick experiments yesterday ( so I didn't test them too much, and if the code I'm about to post doesn't work please forgive me ). Anyway by extending a bit the collision filter groups I've managed to get more control on the collisions logic. I don't know if this solution is reliable f...
by Flix
Sun Jan 06, 2008 11:26 am
Forum: General Bullet Physics Support and Feedback
Topic: Crash on Vector Math Library "=" operator
Replies: 9
Views: 4628

Re: Crash on Vector Math Library "=" operator

Thank you for your clarifications. All makes more sense to me now. The use of your macro BT_DECLARE_ALIGNED_ALLOCATOR() make things much easier. Anyway I've noticed that the new[] and delete[] overloads are missing, so that if I modify the program a bit: // Note: libBulletMath.lib (or bulletmath.lib...
by Flix
Sun Dec 30, 2007 1:17 pm
Forum: General Bullet Physics Support and Feedback
Topic: SSE Vector Math Library Speed
Replies: 0
Views: 1675

SSE Vector Math Library Speed

Hi everybody. I've made some speed testing on some common functions in the SSE Vector Math Library (sin4f(...),acos4f(...) and sincosf4(...)) and I found out that, while acosf4(...) is two times faster than the std acos(...) function, the sin4f(...) and sincosf4(...) are much slowler (10x or so) tha...
by Flix
Tue Dec 25, 2007 1:15 pm
Forum: General Bullet Physics Support and Feedback
Topic: Crash on Vector Math Library "=" operator
Replies: 9
Views: 4628

Re: Crash on Vector Math Library "=" operator

This seems to work for me (but don't ask me why :? ). There seems to be a problem with the default allocator. (BTW: I used the VC 7.1 compiler.) // Note: bulletMath.lib (or libbulletmath.lib) must be added to the linker options of the project. #include <iostream> #include <cstdlib> #include <vector>...