Forum Replies Created
12 February 2020 at 10 h 35 min #15204
Can you tell me how to use MeshMatrixMass because there is no existing example.
I use RestShapeSpringsForceField because I do not want to make the fixed part so hard sometimes.
Wong16 December 2019 at 2 h 32 min #146955 December 2019 at 16 h 46 min #14689
Sure, I will @ you on December 17.
Wong5 December 2019 at 13 h 00 min #14685
Just want to drag or block the artery/vessels and clip the aneurysm. So the level of accuracy should be fairly high.
Wong30 November 2019 at 7 h 28 min #14670
Just deform flexibly like the real one, from all directions and keep the performance in persisting contact. Because the vessels are located in the gap of the soft tissues.
Wong28 November 2019 at 7 h 45 min #1465522 November 2019 at 12 h 12 min #14622
I think the situation is more complicated than you think. What I want to model is something like vessels. So you have to think on the case that the rope has branches.
As far as I can see, representation of beam is still nothing more than a strings of rigid bodies. It may cause low performance having masses of rigid frames and it can never deform radially when it is being clipped.
And I cannot buy your book in my country as well.
But I am still interested in your work and I still want you to provide more information if it is still possible to help.
Wong11 November 2019 at 9 h 07 min #14578
By the way, now how are your TopologicalModifiers coming along in volumetric cutting? I think the topological change for tetra mesh at runtime could help deal with this problem.
Wong9 November 2019 at 16 h 49 min #14575
Well, I have to say that I have ever tried to use SubsetTopology.
But the first problem is that using SubsetTopology would make the scene more complicated and inefficient. Secondly, the spring connecting the Hex and Tet mesh would result in abnormal behavior when the haptic feedback involves. And the constraint solving process would be time-consuming. Or you can provide an example to prove that this way is viable?
I also have looked for relevant information about CGAL to solve the problem. But coding for CGAL is very complicated and there are too little examples. Can you tell me how to put seeds using CGAL?
Wong9 November 2019 at 6 h 11 min #14573
Do you mean you will talk about this case in the session?
After all I will be not be able to attend this session and I do not know if you will find a solution at last.
So I think I will try another method to solve this issue, such as remeshing techniques and will also at the same time wait your news after the session.
Wong5 November 2019 at 5 h 27 min #14534
I did not couple the needle and the brain though. You saw such scene at the beginning just because the Geomagic plugin was not at work.
Well, what I want to achieve is to make the local deformation closer to reality as you can see in the picture of the realistic surgery in the attachment.
Did you see the two pictures in that attachment?
Wong31 October 2019 at 11 h 54 min #1450129 October 2019 at 5 h 38 min #1448225 October 2019 at 3 h 32 min #1446623 October 2019 at 17 h 12 min #14451
ROIBarycentricMapping does inherit from BarycentricMapping.
You can see the m_mapper there.
Wong23 October 2019 at 3 h 12 min #14443
I use Sofa v19.06 and there is no any compile error.
And can you tell me how to make it an external plugin?
Wong22 October 2019 at 10 h 58 min #1442616 October 2019 at 10 h 43 min #14407
This is my example. I hope you can literately help me. The issue is described in ReadMe.txt so you should be make sure that you read it beforehand.
The version of Sofa is 19.06. You can use your own method to modify(refine) the tetrahedral mesh because if I provide it, it would not necessarily be suitable.
Wong8 October 2019 at 11 h 19 min #14356
Well, however this plugin is extraordinarily hard. I once raised this issue on the forum but the author of the plugin did not give an example about free contacts on some local area of a soft body. And this plugin is temporarily used for soft robots not for free contacts.
So if any relevant developers & authors do not have time to patiently explain how to use the plugin, I can never learn how to use it.
Wong7 October 2019 at 14 h 03 min #14350
Thank you for your reply.
Well, I have already tried the MOR plugin, but it is hard for me to define the shake function to meet my deformation requirement. In other words, it is hard for me to utilize it.
And unfortunately, I am not a French and my country is far away from France so I am not be able to go to the Symposium.
Wong11 September 2019 at 5 h 36 min #1422728 April 2019 at 13 h 00 min #13432
This topic can be ignored. I have solved the problem.11 April 2019 at 16 h 12 min #1339711 April 2019 at 16 h 11 min #1339620 March 2019 at 12 h 30 min #13235
Maybe you could not see the frame because I did a little modification about the Geomagic plugin.
I use just the v18.12.
Try this new one: