Search found 91 matches

by fishboy82
Mon Feb 27, 2017 1:28 pm
Forum: Research and development discussion about Collision Detection and Physics Simulation
Topic: paper Interactive Simulation of Elastic Deformable Materials
Replies: 1
Views: 5124

paper Interactive Simulation of Elastic Deformable Materials

Hi has any one readed the paper "Interactive Simulation of Elastic Deformable Materials" by martin.servin In chapter 2.4 they propose a new time step method but I can not deduce the formula a*lambada formulateinpaper.png this is my deduce mydeduce.jpg Note the term "1/2 * deltat + B" is differently ...
by fishboy82
Wed Nov 05, 2014 3:02 am
Forum: Research and development discussion about Collision Detection and Physics Simulation
Topic: Is collision constraint proposed in PBD paper correct?
Replies: 2
Views: 3597

Re: Is collision constraint proposed in PBD paper correct?

I have the same question, how to make a robust softbody surface-softbody surface collision algo,and make it suitable for use in the PBD
by fishboy82
Mon Nov 15, 2010 8:28 am
Forum: Research and development discussion about Collision Detection and Physics Simulation
Topic: Capsule separating axis
Replies: 1
Views: 1773

Re: Capsule separating axis

Actually in my code I find Axis as 1. triangle face normal, 2.Triangle edge-capsule edge , 3.triangle point - capsule edge 4.trignale point - capsule edge point 3 and 4 will have totally 2+2*3 axis but they can be simplified to 3 axis test .in my code i first find the cloest point between first tria...
by fishboy82
Tue Aug 31, 2010 1:46 am
Forum: Links, Papers, Libraries, Demos, Movies, Comparisons
Topic: Papers and stuff
Replies: 2
Views: 4810

Re: Papers and stuff

That's great,Thanks for share,
by fishboy82
Fri Aug 13, 2010 2:25 am
Forum: Links, Papers, Libraries, Demos, Movies, Comparisons
Topic: Opensource inverse kinematics library
Replies: 4
Views: 15075

Re: Opensource inverse kinematics library

clauchiorean:

Thanks a lot for the information , By the way do you know how current games couple the IK system with the artists-maded animation ?
by fishboy82
Wed Aug 11, 2010 1:58 am
Forum: Links, Papers, Libraries, Demos, Movies, Comparisons
Topic: Opensource inverse kinematics library
Replies: 4
Views: 15075

Re: Opensource inverse kinematics library

Hi clauchiorean:
I am very interseting about the implementation of the project ,what method do you use in the IK solution, I only know the simple cylic coordinate descendt but seems not enough could you refer me the method use in your project?
by fishboy82
Mon Aug 09, 2010 2:44 pm
Forum: Links, Papers, Libraries, Demos, Movies, Comparisons
Topic: New research on real-time deformable body dynamics (FEM).
Replies: 28
Views: 29752

Re: New research on real-time deformable body dynamics (FEM)

Hi Dirk: I read the paper <<A nonsmooth nonlinear conjugate gradient method for interactive contact force problems >> But there seems some problem in the paper . As they say r = (H − I)Lamda+h can be interpreted as the gradient of a non-smooth nonlinear quasi-quadratic function f(Lambda) ≡ 1/2|| r||...
by fishboy82
Fri Aug 06, 2010 1:21 pm
Forum: Links, Papers, Libraries, Demos, Movies, Comparisons
Topic: New research on real-time deformable body dynamics (FEM).
Replies: 28
Views: 29752

Re: New research on real-time deformable body dynamics (FEM)

Hi Dirk:
have you got the pdf of the paper<<A nonsmooth nonlinear conjugate gradient method for interactive contact force problems >>,If you have, could you send me one?
by fishboy82
Fri Aug 06, 2010 2:53 am
Forum: Links, Papers, Libraries, Demos, Movies, Comparisons
Topic: New research on real-time deformable body dynamics (FEM).
Replies: 28
Views: 29752

Re: New research on real-time deformable body dynamics (FEM)

XperienS: Thanks alot for you reply,that's the data I need, Actually I am more intersting about your new CG LCP sover, so you mean you solve rigid body and sift body all use your new solver? Or you use traditional PGS solver for rigid body and use your new solver for rigid-soft constraint(contact et...
by fishboy82
Thu Aug 05, 2010 7:19 am
Forum: Links, Papers, Libraries, Demos, Movies, Comparisons
Topic: New research on real-time deformable body dynamics (FEM).
Replies: 28
Views: 29752

Re: New research on real-time deformable body dynamics (FEM)

That's great ,Look forward to see your paper,but also I am a little intersted to know the speed efficiency and memory need when solve the system
by fishboy82
Wed Aug 04, 2010 5:40 am
Forum: Links, Papers, Libraries, Demos, Movies, Comparisons
Topic: Lagoa Multiphysics
Replies: 3
Views: 5410

Re: Lagoa Multiphysics

Impressive!It said all the body share the same solver ,what is the solver based,could you give a short descirption?
by fishboy82
Wed Aug 04, 2010 5:37 am
Forum: Links, Papers, Libraries, Demos, Movies, Comparisons
Topic: New research on real-time deformable body dynamics (FEM).
Replies: 28
Views: 29752

Re: New research on real-time deformable body dynamics (FEM)

Seems good ,Could you write paper describe you new techinique?
by fishboy82
Tue Jul 27, 2010 2:21 am
Forum: General Bullet Physics Support and Feedback
Topic: [Help] Need method to fill a Surface mesh with nodes
Replies: 1
Views: 1741

Re: [Help] Need method to fill a Surface mesh with nodes

the paper<<Tetrahedral Mesh Generation for Deformable Bodies>>
describle the volume mesh generate . but it based on tetrahedron ,may be you can change the method to cube?hope this will help
by fishboy82
Sun Jul 11, 2010 3:52 am
Forum: Research and development discussion about Collision Detection and Physics Simulation
Topic: About tetra Mesh generate
Replies: 0
Views: 2120

About tetra Mesh generate

Hi: I have notice that bullet use tetgen as the volume mesh generator as suggested by Dirk. I have also tested this library but I find it is not appropriate for game physics. Because this Algo is Boundary constrainted this means given a fine surface mesh this libary cannot generate a coarse volume m...
by fishboy82
Wed Jun 09, 2010 5:15 am
Forum: Research and development discussion about Collision Detection and Physics Simulation
Topic: Anti-Tunnelling/Sinking
Replies: 3
Views: 2387

Re: Anti-Tunnelling/Sinking

Too large box size(like the ground shape) will make the collision detection algo unstable,try to use triangle mesh shape or bvtriangle mesh shape instead, there is an old thread mentioned for this problem,but I forget the link.