Hiro_FX Posted October 29, 2015 Share Posted October 29, 2015 (edited) Hi!I'm having a problem using PBD when it collides with an imported animated geo but not when I'm using an animated geo created in Houdini. Dunno exactly why particles are just shooting out with one and not the other. I've tried converting the geo (alembic and chached out as bgeo) with an Iso offset, a VDB convert from polygons and end up using the Deforming Object shelf tool. I've tried incresing the substeps, increasing Constraint Iterations and set Scale Kinetic to 1.. and still nothing. I've run out of ideas and can't find a solution anywhere. (I know it explodes the 1st frame, but I'm not worried about that ). I've attached a HIP file (H14) and some previews. Any help would be nice Thank you! sandWalking_test_houdiniGeo.mov sandWalking_test_importedGeo.mov Edited November 16, 2015 by Hiro_FX Quote Link to comment Share on other sites More sharing options...
merlino Posted October 29, 2015 Share Posted October 29, 2015 Hi Dave, looking at the movs it seems like the velocity scale is wrong. Maybe adding a trail node to compute the velocity after importing the geo can help. Not sure as we don't have the actual geometry attached. Can you upload it? Cheers, Marco Quote Link to comment Share on other sites More sharing options...
Hiro_FX Posted October 30, 2015 Author Share Posted October 30, 2015 Hi Dave, looking at the movs it seems like the velocity scale is wrong. Maybe adding a trail node to compute the velocity after importing the geo can help. Not sure as we don't have the actual geometry attached. Can you upload it? Cheers, Marco Done! And thank you! Quote Link to comment Share on other sites More sharing options...
merlino Posted October 31, 2015 Share Posted October 31, 2015 Hi Dave, it's kind of empty the bgeo file ... can you check it? Quote Link to comment Share on other sites More sharing options...
Hiro_FX Posted November 2, 2015 Author Share Posted November 2, 2015 I uploaded a zip file with the animation in bgeo (Dunno if you can save a .hip file with the cache inside it, I'm still kinda new with Houdini ). Quote Link to comment Share on other sites More sharing options...
merlino Posted November 2, 2015 Share Posted November 2, 2015 Yeah, but I tried to load that bgeo sequence and is empty. Well, the files exists but with no info. Quote Link to comment Share on other sites More sharing options...
Hiro_FX Posted November 3, 2015 Author Share Posted November 3, 2015 The problem is that I cannot share more than that of the model right now. I've tried adding a Trail node to compute velocity and nothing, still doing the same reaction. I imported another animated geo ( https://code.google.com/p/alembic/downloads/detail?name=Alembic_Octopus_Example.tgz ) and it works perfectly. So I guess is what you said about the Velocity scale of the model, but dunno what else I can do. Quote Link to comment Share on other sites More sharing options...
merlino Posted November 3, 2015 Share Posted November 3, 2015 I understand, my point is that the bgeo sequence doesn't contain any data. Just a question: the original geo come from an alembic? Quote Link to comment Share on other sites More sharing options...
Hiro_FX Posted November 3, 2015 Author Share Posted November 3, 2015 Yes. I imported the alembic and then I cached it out as bgeo. I've tried with the alembic file too, and happens the same. Quote Link to comment Share on other sites More sharing options...
merlino Posted November 3, 2015 Share Posted November 3, 2015 Ok, so try putting a convert node right after importing the alembic and using that geo as collider. You will see that the bgeo files will be larger and will actually contain a geo. Well ... I hope so! Quote Link to comment Share on other sites More sharing options...
Hiro_FX Posted November 4, 2015 Author Share Posted November 4, 2015 I just decrease the Velocity Blend in the Grain Update node to 0.1 and it looks like it's working now. But dunno if it's the best way to get it right xD I'll try with the convert node too and tell you later. Thanks man Quote Link to comment Share on other sites More sharing options...
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