Search found 50 matches
- Wed Oct 23, 2013 10:53 am
- Forum: General Bullet Physics Support and Feedback
- Topic: improving bullet sweep test performance
- Replies: 9
- Views: 12360
Re: improving bullet sweep test performance
The shapes involved are : Sphere, Cone, Cylinder, and will also probably involve convex and combined shape in future. The collision happens against a static triangle mesh. Basically a "cutter" is dropped on the surface of the object to be milled. So, only first hit is important for this co...
- Tue Oct 22, 2013 9:37 am
- Forum: General Bullet Physics Support and Feedback
- Topic: improving bullet sweep test performance
- Replies: 9
- Views: 12360
Re: improving bullet sweep test performance
Thanks for your reply. I am not planning to switch to PhysX, for these reasons: I develop in blender, and want to keep my development synced with it's current version. Also, I am mainly python developer, so from your point of view, an amateur ;) I am big fan of open source and bullet too, so I won't...
- Tue Oct 15, 2013 2:25 pm
- Forum: General Bullet Physics Support and Feedback
- Topic: improving bullet sweep test performance
- Replies: 9
- Views: 12360
Re: improving bullet sweep test performance
Hello, still got no answer, after several months. Am I asking wrong question, or in wrong forum?
I would be willing to pay for a solution to this...
I would be willing to pay for a solution to this...
- Tue Aug 13, 2013 12:24 pm
- Forum: General Bullet Physics Support and Feedback
- Topic: improving bullet sweep test performance
- Replies: 9
- Views: 12360
Re: improving bullet performance
Hello, I am still trying to find any advice on how to optimize sweep test performance. Could HACD potentially be used to optimize sweep tests, even when I need best precission possible? Is that possible also for non-manifold meshes? Sorry for asking again, but I just didn't find any solution to this...
- Tue Aug 13, 2013 9:41 am
- Forum: Links, Papers, Libraries, Demos, Movies, Comparisons
- Topic: Great Physics Engine Comparison (PEEL)
- Replies: 29
- Views: 180975
Re: Great Physics Engine Comparison (PEEL)
Not taking into account the emotional stuff in this thread, I can mention that I struggle with the sweep test performance in Bullet still, and don't know how to optimize it. I did test in Blender(bullet) vs Unity(PhysX), testing a sphere against a highpoly mesh(unity supports max 65k meshes). Unity ...
- Sun May 12, 2013 10:28 am
- Forum: General Bullet Physics Support and Feedback
- Topic: improving bullet sweep test performance
- Replies: 9
- Views: 12360
Re: improving bullet performance
Hello,
I am still struggling with this, anybody has an idea about how the performance could become better with the way it is currently implemented in bullet?
thanks..
I am still struggling with this, anybody has an idea about how the performance could become better with the way it is currently implemented in bullet?
thanks..
- Thu May 02, 2013 12:38 pm
- Forum: General Bullet Physics Support and Feedback
- Topic: improving bullet sweep test performance
- Replies: 9
- Views: 12360
Re: improving bullet performance
Thanks for you reply. My use case is : I am testing the same convex shape(so far only sphere, cone, cylinder) many times against a single or maximally several complex not-moving triangle mesh(es)(concave). I am interested only in the first hit. The mesh can have up to hunderds of thousands of triang...
- Sat Apr 27, 2013 4:07 pm
- Forum: General Bullet Physics Support and Feedback
- Topic: improving bullet sweep test performance
- Replies: 9
- Views: 12360
improving bullet sweep test performance
Hello, I've implemented a convex sweep test function(inside blender 3d ) and want to improve the performance of it.
Is it possible to use multithreading when testing collision against the same meshes somehow? if yes, how?
thanks
Is it possible to use multithreading when testing collision against the same meshes somehow? if yes, how?
thanks
- Tue Apr 16, 2013 1:07 pm
- Forum: General Bullet Physics Support and Feedback
- Topic: sweep body test in blender 3d
- Replies: 3
- Views: 6751
Re: sweep body test in blender 3d
I still didn't get any answer here :) and allraedy have a different question: Can the convex sweep test be faster when searching just for first hit instead of all hits? I didn't find out if and how. but - I realized an interesting thing. Convex sweep against a btGimpactMeshShape is actually a bit fa...
- Tue Apr 09, 2013 3:13 pm
- Forum: General Bullet Physics Support and Feedback
- Topic: sweep body test in blender 3d
- Replies: 3
- Views: 6751
Re: sweep body test in blender 3d
I decided to post the code, maybe someone can help? I am thinking if the fact that I have to create a convex shape from the collision shape can be a problem? I don't know how not to do this. I will be glad for any help... void RB_body_convex_sweep_test(rbDynamicsWorld *world, rbRigidBody *object, co...
- Tue Apr 09, 2013 11:04 am
- Forum: General Bullet Physics Support and Feedback
- Topic: Bullet Fluids
- Replies: 3
- Views: 5476
Re: Bullet Fluids
I thought it's allready there...?
http://www.youtube.com/user/rtrius?feature=watch
http://www.youtube.com/user/rtrius?feature=watch
- Tue Apr 09, 2013 8:48 am
- Forum: General Bullet Physics Support and Feedback
- Topic: sweep body test in blender 3d
- Replies: 3
- Views: 6751
Re: sweep body test in blender 3d
Good news is I got it working inside blender. Bad news is, for my purpose the performance is not stellar and I am sometimes getting inprecise results. My use case is - I am developing a CAM addon, where I need to check a convex primitive(Sphere, Cone, Cylinder, Capsule), against a (sometimes very co...
- Mon Mar 25, 2013 3:30 pm
- Forum: General Bullet Physics Support and Feedback
- Topic: sweep body test in blender 3d
- Replies: 3
- Views: 6751
sweep body test in blender 3d
Hello, I am curious if the sweep test can be done for many positions with an efficient way. I am using blender to create paths for a cnc machine with a new addon for bleder: http://blendercam.blogspot.cz/ , and I would love to use bullet for collision. It would be mainly testing the same primitive a...
- Mon Jan 26, 2009 4:09 pm
- Forum: Applications, Games, Demos or Movies using Bullet
- Topic: Crackme and heaper scripts for blender
- Replies: 1
- Views: 11673
Re: Crackme and heaper scripts for blender
on erwins request, the videos have been youtubed, see them here: http://www.youtube.com/watch?v=7CzsJpL0Fss http://www.youtube.com/watch?v=f0tV66XvA2U (for the other videos, click on my profile, this is just one of last volumic tests) also uploading an attachment here, which is the zipped crackler a...
- Sun Jan 25, 2009 6:09 pm
- Forum: Applications, Games, Demos or Movies using Bullet
- Topic: Crackme and heaper scripts for blender
- Replies: 1
- Views: 11673
Crackme and heaper scripts for blender
Hello, although this isn't directly involving bullet implementation by myself, I did some scripts in Blender which use Bullet heavily for the simulation part. Heaper is a very simple script for making big natural looking heaps. Crackme are currently actually 2 scripts, where 1 is for generating brok...