Search found 19 matches
- Wed May 06, 2009 2:37 pm
- Forum: Research and development discussion about Collision Detection and Physics Simulation
- Topic: about CCD implementation and information
- Replies: 2
- Views: 3167
Re: about CCD implementation and information
Hi, You may also be interested in the work of Stephane Redon (and collaborators) on interval-arithmetic based continuous collision detection. Also, a google-search reveals this article about bullet's CCD approach with references (at the end) to the some relevant CCD research: http://www.continuousph...
- Mon Mar 09, 2009 11:00 pm
- Forum: Research and development discussion about Collision Detection and Physics Simulation
- Topic: Questions about hovering on a mesh
- Replies: 2
- Views: 3183
Re: Questions about hovering on a mesh
Definitely, manipulating object positions directly sounds dangerous. You can easily end up adding energy to the system and make thinks jitter or explode. From a theoretical prespective, what you are trying to do, if I understand it correctly, is adding an "ObjectOnSurface" constraint to al...
- Mon Jul 28, 2008 2:29 pm
- Forum: Research and development discussion about Collision Detection and Physics Simulation
- Topic: Physics APIs (C vs C++)
- Replies: 5
- Views: 6599
Re: Physics APIs (C vs C++)
Hi BGB, I agree with you on the benefits of having a decoupled API layer and an "internal" implementation of the physics engine. That simplifies a lot user-code, engine extensibility and parallelization, in my opinion. I am currently implementing not one but two engines concurrently (not i...
- Mon Jun 02, 2008 3:05 pm
- Forum: Research and development discussion about Collision Detection and Physics Simulation
- Topic: Detecting a particle "smashed" by polygons
- Replies: 3
- Views: 4367
Re: Detecting a particle "smashed" by polygons
Hi yfan, Handling multiple simultaneous collisions/contacts is never easy. If you're resolving collisions by projection in a Verlet+Relaxation way (based in Jakobsen's article maybe?) and you don't want to write a complex or expensive solution (like applying projections one by one and performing new...
- Wed May 14, 2008 8:33 am
- Forum: Research and development discussion about Collision Detection and Physics Simulation
- Topic: Fish physics
- Replies: 3
- Views: 4588
Re: Fish physics
Some years ago I came across a paper by Demetri Terzopoulos that help you: http://portal.acm.org/citation.cfm?id=202162&dl=GUIDE&coll=GUIDE&CFID=27844896&CFTOKEN=39435710 However, I doesn't seem to be freely available on the web, so I'm afraid you'll need an ACM subscription to get i...
- Mon Feb 04, 2008 11:41 pm
- Forum: Research and development discussion about Collision Detection and Physics Simulation
- Topic: NVIDIA to Acquire AGEIA Technologies
- Replies: 15
- Views: 17222
- Thu May 03, 2007 8:58 pm
- Forum: Links, Papers, Libraries, Demos, Movies, Comparisons
- Topic: Maya Nucleus
- Replies: 7
- Views: 12830
- Thu May 03, 2007 1:41 pm
- Forum: Links, Papers, Libraries, Demos, Movies, Comparisons
- Topic: Maya Nucleus
- Replies: 7
- Views: 12830
Interesting link, thanks! The method sounds very simple... but handling such dense meshes interactively must be a challenge, specially with continuous self-collisions. I'm curious abount how well particle-based fluids will perform, I've always thought eulerian fluids to be superior for CG purposes. ...
- Mon Apr 16, 2007 5:52 pm
- Forum: Links, Papers, Libraries, Demos, Movies, Comparisons
- Topic: Maya Nucleus
- Replies: 7
- Views: 12830
Maya Nucleus
Hi All, I've recently found this in Autodesk's website: http://area.autodesk.com/custom/?id=4547 It's completely based on particles and claims to be able to simulate "any" kind of Model: rigids, cloth, fluids... Sounds like a "Theory Of Everything" for physics based animation. Ju...
- Tue Mar 13, 2007 8:19 pm
- Forum: Links, Papers, Libraries, Demos, Movies, Comparisons
- Topic: Nice example of physic based gameplay
- Replies: 8
- Views: 18154
- Mon Mar 12, 2007 11:38 am
- Forum: Links, Papers, Libraries, Demos, Movies, Comparisons
- Topic: Nice example of physic based gameplay
- Replies: 8
- Views: 18154
- Thu Mar 08, 2007 11:08 pm
- Forum: Links, Papers, Libraries, Demos, Movies, Comparisons
- Topic: Nice example of physic based gameplay
- Replies: 8
- Views: 18154
Ja, this game looks amazing... ...and even has an editor mode where you can build levels and share them (first video in the following link) http://www.gametrailers.com/gamepage.php?id=4491 The physics look great, but the gameplay and visual design make it just perfect. There also seems to be a lot o...
- Thu Nov 02, 2006 12:10 pm
- Forum: Research and development discussion about Collision Detection and Physics Simulation
- Topic: Jacobsen cloth - weird stiffness and twisting
- Replies: 10
- Views: 12269
Hi Dirk, Baraff's paper on Partitioned Dynamics (cloth-rigid is just an example near the end) http://www.cs.cmu.edu/~baraff/papers/partition-tr.pdf About NR (outer) and GS (inner) iterations, now I start to understand what you mean... so in a cloth with only edge-stretch constraints, having 1 outer ...
- Thu Nov 02, 2006 12:46 am
- Forum: Research and development discussion about Collision Detection and Physics Simulation
- Topic: Jacobsen cloth - weird stiffness and twisting
- Replies: 10
- Views: 12269
Hi, I tried the modified stiffness paprameter, but didn't find it usefull. You get so small values when getting above 4 iterations that I simply allow tweaking this value independently for edge and bend constraints in a range from 0 to 2. Technical artists are quite experienced with tweaking so I do...
- Tue Oct 31, 2006 8:06 pm
- Forum: Research and development discussion about Collision Detection and Physics Simulation
- Topic: Jacobsen cloth - weird stiffness and twisting
- Replies: 10
- Views: 12269