cwalrus Posted October 18, 2015 Share Posted October 18, 2015 Hi - i'm following an outdated tutorial (houdini 12 i think) on CMIVFX, and i'm stuck trying to get my particle sim to drive the velocity on my clouds. Their method doesn't work anymore with H14. Any help? Basically I just want the particles to drive the velocity on billowy smoke. File is attached. THanks!!! cameron DustStorm03.hipnc.zip Quote Link to comment Share on other sites More sharing options...
carlo_c Posted October 19, 2015 Share Posted October 19, 2015 Hey so I didn't have a lot of time to look at your hip file, but quickly built an example instead hope it helps. Basically the VDB from particles is set to velocity trail and I use it to create a VDB from the point attribute V so it gets picked up in the source volume! The hip file explains it better velocity_from_particles.hipnc 1 Quote Link to comment Share on other sites More sharing options...
marles Posted October 19, 2015 Share Posted October 19, 2015 Hey Carlo_c thank a lot for your Hip file, it helped me to see clearer, I'm not the author of the topic but i was wondering the same thing. Quote Link to comment Share on other sites More sharing options...
cwalrus Posted October 21, 2015 Author Share Posted October 21, 2015 This is so great- thank you! just wondering - Why do you need to have the Fluid Source node after the Sphere node? Why not just source the Sphere node directly in the SourceVolume in your smokeSolver network? Quote Link to comment Share on other sites More sharing options...
carlo_c Posted October 21, 2015 Share Posted October 21, 2015 (edited) The fluid source node creates the volumes needed for the fluid sim. I don't think you can just plug the sphere directly into the Source Volume DOP node as there'd be no fields for it to work with. http://www.sidefx.com/docs/houdini15.0/nodes/sop/fluidsource http://www.sidefx.com/docs/houdini15.0/nodes/dop/sourcevolume If you use the billowy smoke shelf tool on a sphere for example you'll see it creates the same setup. Edited October 21, 2015 by carlo_c Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.