Real-Time Physics Simulation Forum

Hi Korzen, As expected this was the reason. You are not checking for division by zero in line 88 to 92 in file PositionBasedElasticRod.cpp. These lines float p2pm_mag = p2pm.norm(); p2pm *= 1.0f / p2pm_mag; lambda = (p2pm_mag - ghostEdgeRestLength) / wSum * edgeKs; should be float p2pm_mag = p2pm.no...

Korzen, I think there is at least one place in your code where u r not testing for division by zero which might be the reason the solution diverges. Let me finish my implementation and then I will let u know.

Check the readMe file in Demos/ElasticRodDemo: "IMPORTANT: The OpenMP is not supported in this release! By default, the CMake generated ElasticRodDemo project has OpenMP turned on. Deactivate it to run the demo, otherwise to rod will explode." Sorry for the inconvenience Yep sorry I didn'...

Hi korzen, Sorry to revive this thread again but I think there are still some problems with the current implementation. The solution diverges in the release build and apart from the first two nodes, the rest of nodes disappear to infinity. The debug build works fine but is awefully slow. I am runnin...

Korzen, Just for completeness since you have already found the problem, could you let us know what was wrong? or perhaps highlight how PB elastic rods are implemented for the rest of us? It would be a good idea placing your source code on github (if possible) as a reference for others who might fall...

https://bitbucket.org/yukikoyama/view-d ... on-for-3d/

have found an old repo from the original author. Hope this will help.

The zip files contain only the readMe file, similarly as the GitHub repo. Anyways, I have managed to solve the problem. Will update the source files soon. . Really sorry I had not seen the zip contents. I really don't understand why people create git repos but don't add sources? Whats the point of ...

Here it is: https://github.com/Remotion/Position-ba ... s/releases

Check these implementations:

https://github.com/serpheroth/rod
http://bulletphysics.org/Bullet/phpBB3/ ... =4&t=10113

There is a comprehensive demo with the bullet sdk which has a number of examples of using deformables. Check those first and if you cant get it working, post your issues here.

Hi johnson, Thanks for the interest. I have a lot of things to change in the next release of OpenCloth. I am currently looking into how to accomplish rudimentary collision and self collision detection using ozcollide library. Once this part is done, I will update the OpenCloth github repository. I n...

For adding seams, you should insert additional distance constraints (with a high stiffness) at the adjacent edges of the two cloth pieces. This will ensure that the two cloth pieces stick together.

Some more update. I have also managed to implement Barycentric mapping on top of strain based dynamics to apply the tetrahedral deformation to the surface mesh.

That's nice korzen303. Keep me informed with ur developments.

OK thanks to help by JP, I was able to implement strain based dynamics both for triangular and tetrahedral objects. Here is the snapshot of using strain based dynamics with tetrahedral mesh sbd_tetra.png And here is the snapshot of using strain based dynamics with triangular mesh sbd_cloth.png I wil...