jonp Posted January 30, 2015 Share Posted January 30, 2015 Maybe I'm missing something obvious... I'm trying to split up separate regions in a VDB SDF. The VDB Convert node doesn't seem to do as advertised. Convert to Volume, with "Split Disjointed Volumes", doesn't actually do what it says. See the attached file. Two spheres converted to a VDB, then back to a volume results in only one VDB. I don't really look forward to hacking this to work in a foreach node as my intention is to do this with a lot of fractured VDBs, which will be fairly slow... Jon The file is from Houdini 14. split_fail.hip Quote Link to comment Share on other sites More sharing options...
edward Posted January 30, 2015 Share Posted January 30, 2015 I haven't checked your file but the purpose of it is just to reduce memory usage by using multiple Houdini volume primitives. It doesn't do anything like check for connectivity. Plus, it only splits along tile boundaries. Quote Link to comment Share on other sites More sharing options...
jonp Posted February 1, 2015 Author Share Posted February 1, 2015 I see, then it would be tricky to split anything that is closely aligned, yet not along an axis. Quote Link to comment Share on other sites More sharing options...
edward Posted February 1, 2015 Share Posted February 1, 2015 Is it possible for you to convert back to polygons? Then you can split by polygon connectivity. Quote Link to comment Share on other sites More sharing options...
jonp Posted February 12, 2015 Author Share Posted February 12, 2015 Yes... but I'm using VDB fracture and the number of pieces added up to a lot (thousands). I was hoping to do it in a fast way. But all is well now. A week or so during production is like an eternity, so I managed to make the issue magically go away... Quote Link to comment Share on other sites More sharing options...
koen Posted February 12, 2015 Share Posted February 12, 2015 If you run into it again, this post on the vdb forum might be relevant as well: https://groups.google.com/forum/#!searchin/openvdb-forum/ashraf/openvdb-forum/3LaniFFiNT4/KeiQ2B3PjKkJ Cheers, koen Quote Link to comment Share on other sites More sharing options...
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