Brazen Posted April 9, 2019 Share Posted April 9, 2019 Hello everyone For one of my scenes, I need to cut a 3D model of a human floating in space into several pieces. For that, I try to use the boolean node in shatter mode but I get strange results (see picture below : in the setup, I try to cut my 3D model with a bunch of deformed plane). However, the setup works on the PigHead test geometry. I tried to increase or decrease the number of points in my 3D model with a polyreduce and also to fix possible problems with a polydoctor but I still have strange artifacts and the 3D model does not cut well. I have attached the Houdini hip file below. Here is a link to download my 3D model : https://drive.google.com/drive/folders/1io36E7HHgM_PBOaQxmnjekwiH3Dpq_y9?usp=sharing Does anyone know how to solve this problem? Thanks by advance, Brazen Boolean_Shatter_Issue.hipnc Quote Link to comment Share on other sites More sharing options...
Noobini Posted April 10, 2019 Share Posted April 10, 2019 check the crotch...you'll see holes. So if your model has holes yet your Boolean says treat it as solid, it will lead to issues. I haven't filled the holes but changed the Bool to treat it as surface (same as the cutting planes....it's silly to treat the planes as 'solid') vu_Boolean_Shatter_Issue.hipnc 1 Quote Link to comment Share on other sites More sharing options...
Midasssilver Posted April 10, 2019 Share Posted April 10, 2019 Tried to resolve your issue, and after inspecting your geo, I found that that is likely a large part of the problem. Inspect the mesh around the pants - see the holes and messed up geo? That won't boolean correctly, which also explains why the technique worked on simple geo, but not your model. Unfortunately I can't tell you how to fix your model, but perhaps converting to vdb and remeshing it could get you what you need. One thing I suggest while troubleshooting this, is try using a single cutter first, and see if the problem persists, then increase the count of the cutters after that. 1 Quote Link to comment Share on other sites More sharing options...
Brazen Posted April 10, 2019 Author Share Posted April 10, 2019 (edited) I tried to convert my model to VDB then remeshed it and it worked ! Thanks Edited April 10, 2019 by Brazen 1 Quote Link to comment Share on other sites More sharing options...
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