Marcocheng Posted January 3, 2020 Share Posted January 3, 2020 Hi guys I'm currently working on a Particle collision situation with pre-sim RBD (converted to VDB SDF already). The SDF is a combination of multiple SDF moving within a timeframe, is there any way (or workaround) to flatten multiple vdb sdf into single VDB so POP static object can read properly (default volume collision did not support multiple SDF I think)? Anyway to flatten it? Thanks！ Here's the VDB file. filecache2.v1.0040.bgeo.sc filecache2.v1.0040.bgeo.sc Quote Link to comment Share on other sites More sharing options...
iamyog Posted January 3, 2020 Share Posted January 3, 2020 (edited) a VDB combine with "Flatten all A" in the collation drop down menu and "Minimum" in the operation should do. Edited January 3, 2020 by iamyog typo 1 Quote Link to comment Share on other sites More sharing options...
anim Posted January 3, 2020 Share Posted January 3, 2020 there is also SDF Union operation 1 Quote Link to comment Share on other sites More sharing options...
Marcocheng Posted January 3, 2020 Author Share Posted January 3, 2020 14 minutes ago, iamyog said: a VDB combine with "Flatten all A" in the collation drop down menu and "Minimum" in the operation should do. I've just found this new option in 17.5 thanks. (i was using 16.5 previously). Thanks Quote Link to comment Share on other sites More sharing options...
Marcocheng Posted January 3, 2020 Author Share Posted January 3, 2020 BTW any workaround using 16.5? Quote Link to comment Share on other sites More sharing options...
anim Posted January 3, 2020 Share Posted January 3, 2020 you can still use use Flatten All B into A, are you having any issues with that? 1 Quote Link to comment Share on other sites More sharing options...
Marcocheng Posted January 4, 2020 Author Share Posted January 4, 2020 11 hours ago, anim said: you can still use use Flatten All B into A, are you having any issues with that? You save my life. Give this man a free beer! 1 Quote Link to comment Share on other sites More sharing options...
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