Hi there,
We might be able to help you if you show us how you are doing the solves currently. And is it in bullet or have you created your own framework?
Search found 122 matches
- Sat Feb 25, 2017 6:03 pm
- Forum: Research and development discussion about Collision Detection and Physics Simulation
- Topic: Damping oscillations in PBD?
- Replies: 2
- Views: 10293
- Wed Dec 21, 2016 4:42 am
- Forum: Links, Papers, Libraries, Demos, Movies, Comparisons
- Topic: New fluid simulation book by Doyub Kim and accompanying repo
- Replies: 0
- Views: 38065
New fluid simulation book by Doyub Kim and accompanying repo
Just wanted to share this new book and its accompanying git repository.
http://doyub.com/fluid-engine-development/
https://github.com/doyubkim/fluid-engine-dev
http://doyub.com/fluid-engine-development/
https://github.com/doyubkim/fluid-engine-dev
- Wed Aug 03, 2016 2:52 am
- Forum: Research and development discussion about Collision Detection and Physics Simulation
- Topic: Implementing Efficient Simulation of Inextensible Cloth
- Replies: 3
- Views: 13597
Re: Implementing Efficient Simulation of Inextensible Cloth
Hi Dirk,
Thanks for a prompt responses. IZIRC when I started opencloth you referred me to this very paper and his PhD thesis. Thanks to archives, is this the thesis you are referring to?
https://web.archive.org/web/20121027055 ... Thesis.pdf
Thanks for a prompt responses. IZIRC when I started opencloth you referred me to this very paper and his PhD thesis. Thanks to archives, is this the thesis you are referring to?
https://web.archive.org/web/20121027055 ... Thesis.pdf
- Tue Aug 02, 2016 8:15 am
- Forum: Research and development discussion about Collision Detection and Physics Simulation
- Topic: Implementing Efficient Simulation of Inextensible Cloth
- Replies: 3
- Views: 13597
Implementing Efficient Simulation of Inextensible Cloth
Dear all, I am trying to implement the paper by Goldenthal et. al. ( ESIC ). I have already seen this existing thread where the author of this paper and Erin, Dirk and others shed some light on the implementation of this method as well as its similarities to Non-linear Gauss Seidel style methods. I ...
- Mon Jul 18, 2016 11:26 am
- Forum: Research and development discussion about Collision Detection and Physics Simulation
- Topic: [SOLVED] Position Based Elastic Rods implementation
- Replies: 32
- Views: 64890
Re: [SOLVED] Position Based Elastic Rods implementation
Hi korzen303,korzen303 wrote:Mobeen, are you interested in doing the same?
No I am a bit busy these days I have replied on your main thread.
- Mon Jul 18, 2016 4:19 am
- Forum: Research and development discussion about Collision Detection and Physics Simulation
- Topic: Position and Orientation Based Cosserat Rods
- Replies: 1
- Views: 30629
Re: Position and Orientation Based Cosserat Rods
Hi Korzen, I just read the paper superficially. For your question, in the term for correction of dq, (qe3) q is the quaternion representing the orientation of the current rod element and e3 is the material frame z axis quaternion with scalar part 0 i.e. (0,[e3.x,e3.y,e3.z]) assuming authors notation...
- Fri Jul 01, 2016 5:03 am
- Forum: Research and development discussion about Collision Detection and Physics Simulation
- Topic: How does the Strain Based Dynamics material transform work?
- Replies: 6
- Views: 16344
Re: How does the Strain Based Dynamics material transform wo
any two tangets could be chosen, so long as they are orthogonal. Hmm I dont think so. We used the uv coordinates of our triangle to get the tangents. I dont think the orthogonality is necessary here between tu and tv. From what I see, we are multiplying here ( [n1,n2]'*(x1-x0,x2-x0) ) to get a squa...
- Tue Jun 28, 2016 11:42 pm
- Forum: Research and development discussion about Collision Detection and Physics Simulation
- Topic: How does the Strain Based Dynamics material transform work?
- Replies: 6
- Views: 16344
Re: How does the Strain Based Dynamics material transform wo
Have I understood that correctly? Yes Though this still leaves me wondering how the transformation by the tangents works. OK. Let me elaborate from what I understand. For the triangular element, we are trying to come up with a material frame (a basis) so that we could covert a given attribute in th...
- Tue Jun 28, 2016 3:59 am
- Forum: Research and development discussion about Collision Detection and Physics Simulation
- Topic: How does the Strain Based Dynamics material transform work?
- Replies: 6
- Views: 16344
Re: How does the Strain Based Dynamics material transform wo
I am working on an implementation of strain based dynamics, but am stuck understanding how one part of it operates. I have written an implementation of strain based dynamics chapter 12 in a new book Game Engine Gems 3 (http://www.gameenginegems.com/geg3.php). Complete source code is given with it w...
- Tue May 24, 2016 4:19 am
- Forum: General Bullet Physics Support and Feedback
- Topic: Collision only with boxes problem
- Replies: 11
- Views: 15212
Re: Collision only with boxes problem
Yep you need to see what collision margin is set currently. Try to give it a smaller value. Also note not to lower it to a very small value as that might cause problems. You could also deal with this with you rendering part by only rendering the cube part taking the collision margin into considerati...
- Sun May 15, 2016 1:07 pm
- Forum: General Bullet Physics Support and Feedback
- Topic: Discussion of future Bullet Example contributions (Join us!)
- Replies: 44
- Views: 194346
Re: Discussion of future contributions and roadmap
Hello all! Sorry for being very busy, I could not yet contributes since I am finishing my master's presentation this week. After that, I will finish my tutorial parts. What is next on our roadmap? Should we discuss the tutorials written so far as soon as I am done? I would suggest we add a few more...
- Sat May 14, 2016 1:20 pm
- Forum: General Bullet Physics Support and Feedback
- Topic: Cloth Simulation problem in iOS app
- Replies: 1
- Views: 5729
Re: Cloth Simulation problem in iOS app
There can be many reasons but highly likely seems to me that the mass or scale of your cloth mesh is off. Try setting the mass and/or scale to 1. Another thing would be to generateBendingConstraints at distance of 3 or 4. I also notice that the size of your graphical sphere does not match the size o...
- Fri May 13, 2016 11:21 am
- Forum: General Bullet Physics Support and Feedback
- Topic: Penetration depth for STL files
- Replies: 2
- Views: 11814
Re: Penetration depth for STL files
Erwin I think probably this is the paper you are talking about. It does detail a bit about how they integrated sdf in bullet
http://elib.dlr.de/102551/1/Sagardia_VP ... R_2014.pdf
http://elib.dlr.de/102551/1/Sagardia_VP ... R_2014.pdf
- Wed May 11, 2016 7:24 am
- Forum: General Bullet Physics Support and Feedback
- Topic: Discussion of future Bullet Example contributions (Join us!)
- Replies: 44
- Views: 194346
Re: Discussion of future contributions and roadmap
Hi Benelot, Just tried your demos they are cool. I was getting two compilation errors one for M_PI and other for assert. My suggestions on these 1) Use SIMD_PI instead of M_PI and SIMD_HALF_PI for M_PI/2.0 2) Use btAssert instead of assert 3) In the initPhysics setup call, dont call these bool isDyn...
- Tue May 10, 2016 5:54 pm
- Forum: General Bullet Physics Support and Feedback
- Topic: Discussion of future Bullet Example contributions (Join us!)
- Replies: 44
- Views: 194346
Re: Discussion of future contributions and roadmap
Thanks benelot for the feedback. I am currently trying to get the bare minimum that is required to understand the tutorial. The main idea of putting on the wiki was to have a shared place where the content could be edited on the fly as required. I would suggest everyone reading the new tutorials on ...