Search found 11 matches
- Sun Oct 23, 2016 1:33 pm
- Forum: General Bullet Physics Support and Feedback
- Topic: Multiple Rigidbodies per Blender Object -> Possibilities ?
- Replies: 0
- Views: 4791
Multiple Rigidbodies per Blender Object -> Possibilities ?
Hello, in blender currently there is a one to one mapping between a Blender Object and a Bullet Rigidbody. There you have a group of objects, which determines the rigidbody world participants. For fracture modifier i coded some workaround solution involving a mapping between rigidbodies in the world...
- Thu Oct 20, 2016 12:53 pm
- Forum: General Bullet Physics Support and Feedback
- Topic: aabbTest at subshape-level of compound - no such feature?
- Replies: 2
- Views: 3951
Re: aabbTest at subshape-level of compound - no such feature
Hello, in my Fracture Modifier Compound implementation (which unfortunately works only partially, as in not good controllable) I created a btHashMap of ObjectID and ShardID as key (combined string) and stored the shape indexes there.... to be able to track which shard ids map to which shape indexes....
- Sat Oct 15, 2016 9:28 pm
- Forum: General Bullet Physics Support and Feedback
- Topic: Good / simple introduction example / docs for Bullet 3 GPU ?
- Replies: 10
- Views: 17233
Re: Good / simple introduction example / docs for Bullet 3 G
Ok, and the hardcoded example works too. Only thing what worries me a bit about loading from urdf is the short delay in loading time, even already in the example browser Imagine i want to use dynamic voronoi fracturing. For this purpose in blender i let bullet fire contact callbacks to blender, wher...
- Sat Oct 15, 2016 8:09 pm
- Forum: General Bullet Physics Support and Feedback
- Topic: Good / simple introduction example / docs for Bullet 3 GPU ?
- Replies: 10
- Views: 17233
Re: Good / simple introduction example / docs for Bullet 3 G
You can also try out pybullet to connect to a 'physics server' in the example browser: First start the example browser, and select the 'Experiments/Physics Server' example, and leave it running. Before running the script below, your ExampleBrowser in 'Experiments/Physics Server' should look similar...
- Sat Oct 15, 2016 5:05 pm
- Forum: General Bullet Physics Support and Feedback
- Topic: Good / simple introduction example / docs for Bullet 3 GPU ?
- Replies: 10
- Views: 17233
Re: Good / simple introduction example / docs for Bullet 3 G
Loading a URDF lets you specify collision shapes, mass, inertia, constraints etc. It is work-in-progress, there is not much documentation for the new API yet, I would suggest try getting pybullet to run and give some feedback. There are a few scripts in Bullet/examples/pybullet. There will also be ...
- Sat Oct 15, 2016 3:42 pm
- Forum: General Bullet Physics Support and Feedback
- Topic: Good / simple introduction example / docs for Bullet 3 GPU ?
- Replies: 10
- Views: 17233
Re: Good / simple introduction example / docs for Bullet 3 G
Another question... since the pybullet wrapper seems not exactly what i can use for the purpose of operating bullet via python Why not? pybullet and the underlying shared memory C-API will be the new Bullet 3.x API. I plan to create a backend so you can automatically select Bullet 2.x or Bullet 3.x...
- Sat Oct 15, 2016 2:49 pm
- Forum: General Bullet Physics Support and Feedback
- Topic: Good / simple introduction example / docs for Bullet 3 GPU ?
- Replies: 10
- Views: 17233
Good / simple introduction example / docs for Bullet 3 GPU ?
Hello, i am looking for a simple to follow introduction example on how to set up things to have a Bullet 3 world with OpenCL support. There is a basic hello world example in the wiki, which explains how to create a world, add in rigidbodys, shapes and constraints and step the simulation. But is ther...
- Sat Oct 15, 2016 12:45 pm
- Forum: General Bullet Physics Support and Feedback
- Topic: Usage / use cases of pybullet ?
- Replies: 3
- Views: 4865
Usage / use cases of pybullet ?
Hello, just read about 2.85 and the new pybullet bindings.... but when reading thru the pybullet.c file, i cant find obvious ways to create a world, create rigidbodies and shapes, populate the world with those rigidbodies or add / remove constraints. there is a step function and several get function...
- Thu Jan 07, 2016 11:28 am
- Forum: General Bullet Physics Support and Feedback
- Topic: Questions about Constraints and Compounds
- Replies: 1
- Views: 3704
Questions about Constraints and Compounds
Hello, i am using btFixedConstraints to connect fracture shards of a rigidbody. In order to do this, i iterate over each shard and create constraints to other shards within a certain search radius. This is calculated between shard centroids. I also take care not to create doubled constraints, means ...
- Thu Oct 29, 2015 3:58 pm
- Forum: Physics authoring tools, serialization, standards and related topics
- Topic: Blender Fracture Modifier - Compound Fracture Support
- Replies: 1
- Views: 42194
Blender Fracture Modifier - Compound Fracture Support
Hello, i am the developer of the Fracture Modifier in Blender. For some time it has been using rigidbodies and fixed constraints to simulate connections between shards inside a fractured object. But as this method becomes very slow with say, 5000+ rigidbodies and a lot of constraints, i was looking ...
- Sun Apr 08, 2012 10:16 am
- Forum: General Bullet Physics Support and Feedback
- Topic: Softbody destruction, SIGSEGV afterwards
- Replies: 0
- Views: 3110
Softbody destruction, SIGSEGV afterwards
Hello, how can i re-validate my softbody after destroying links using cutLink or refine ? I get SIGSEGV errors when trying to continue in the simulation. Its the line 2410 in btSoftbody.cpp (from bullet version included in blender 2.62) which makes trouble: const int idx=int(c.m_nodes[j]-&m_node...