Member davide445 Posted August 26, 2021 Member Report Share Posted August 26, 2021 Returning to 3d-Coat after years out of desperation since I need a cleaned mesh to run a Maya Bifrost simulation on it. I'm neither an expert on 3DC neither on Maya, just interested to enable the simulation part (even if I dream some day to use properly 3DC for a personal project I'm planning). Using Maya Retopology tool create some bad result such as this one This is the complete model (the front blade of a snow groomer), already decimated on 3ds Max Testing Autotopo, Instant Meshes and old-style quadrangulation I find better information than Maya (no preview nothing in Maya) but no good results. Wanted to ask i.e. if I need to paint flow lines/edges around every single square hole in the upper part. Quote Link to comment Share on other sites More sharing options...
Carlosan Posted August 26, 2021 Report Share Posted August 26, 2021 Hi Will be hard to retopo as one piece. Can you split parts to join it later ? Hope it help Quote Link to comment Share on other sites More sharing options...
Advanced Member sprayer Posted August 26, 2021 Advanced Member Report Share Posted August 26, 2021 (edited) Try quad remesher for maya if 3dcoat autotopo not working for you. Are you sure need to remove all polygon with decimation? I am not sure about bifrost some simulations likes dense topology for more accurate simulation with physics collision Edited August 26, 2021 by sprayer 1 Quote Link to comment Share on other sites More sharing options...
Member davide445 Posted August 26, 2021 Author Member Report Share Posted August 26, 2021 (edited) 3 hours ago, sprayer said: Try quad remesher for maya if 3dcoat autotopo not working for you. Are you sure need to remove all polygon with decimation? I am not sure about bifrost some simulations likes dense topology for more accurate simulation with physics collision I have problems exatcly with the colliders. The object it's 1.8cm thick and even setting the particles and collision details to 2cm (meaning about 1h50min of frame sim time on a 48 thread machine) I got particles leaking trough the collider. Trying to solve the problem having a clean quad topology seems a good point. I'm not so concerned about decimation anymore, more importat to have a clean quad topology. 3 hours ago, Carlosan said: Hi Will be hard to retopo as one piece. Can you split parts to join it later ? Hope it help If there is no other way, I suppose I can. Will be not the same to paint the upper part with the holes as a more dense for retopo? I think there lie the problem. Edited August 26, 2021 by davide445 Quote Link to comment Share on other sites More sharing options...
Carlosan Posted August 27, 2021 Report Share Posted August 27, 2021 Sometimes the algorithm is not effective if the model is very detailed with lot of holes, doing it manually would be the solution. Quote Link to comment Share on other sites More sharing options...
Member davide445 Posted August 30, 2021 Author Member Report Share Posted August 30, 2021 Fearing that will be the solution. A couple of questions: - since the most complex part will be the upper side with the square holes, there is any way to "copy&paste" the retopo done on one hole to the others? Just to don't need to do all the work manually - I tried anyway to retopo using the different methods, but when I try to export the result to fbx to be used in Maya, I find it back triangulated. I didn't find a way to prevent this. Quote Link to comment Share on other sites More sharing options...
Advanced Member sprayer Posted August 30, 2021 Advanced Member Report Share Posted August 30, 2021 1 hour ago, davide445 said: - I tried anyway to retopo using the different methods, but when I try to export the result to fbx to be used in Maya, I find it back triangulated. I didn't find a way to prevent this. To me 3dcoat exporting quads, try update to latest version, you may try obj format, check settings at import in maya. But even triangles if you need model for simulation i think it doesn't matter as i know colliders using only vertex position. By the way in maya should be the way to convert into quads, i am 3ds max user there is qualify mesh modifier for that, also there is tool qualify all what reconstruct triangles to quad without changing topology. Quote Link to comment Share on other sites More sharing options...
Member davide445 Posted September 1, 2021 Author Member Report Share Posted September 1, 2021 Tried to use 3ds Max new Retopology Tool 1.1 and the result it's still bad even if not so distorted as I got from 3d Coat or Maya retopo: Doing the sim seems it works in some way as expected (not entierly but at least the specific problem I was trying to solve) even using the original poly shape. So before going on with the for sure effort intensive manual retopo I will follow on with the polygonal shape. Quote Link to comment Share on other sites More sharing options...
Advanced Member sprayer Posted September 1, 2021 Advanced Member Report Share Posted September 1, 2021 (edited) Can you share model? If you in max maybe better simulate in phoenixFD i found it way faster and simpler than bifrost, and there is many good tutorials for example from redefinefx Edited September 1, 2021 by sprayer Quote Link to comment Share on other sites More sharing options...
Member davide445 Posted September 1, 2021 Author Member Report Share Posted September 1, 2021 Sent in PM the mesh. I cannot use PhoenixFD since using a solver available only on Maya Bifrost (MPM). Quote Link to comment Share on other sites More sharing options...
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