sparkChan Posted May 26, 2012 Share Posted May 26, 2012 (edited) hi, I don't know why the smoke can't collide with moved object, and it's just like sinking the smoke not colliding. I just used the shelf tool to set up simulation. thanks. smoke.hip Edited May 26, 2012 by sparkChan Quote Link to comment Share on other sites More sharing options...
mangi Posted May 26, 2012 Share Posted May 26, 2012 Hi , I did check the network. I did not see how to get it to collide there, How ever I did mess around inside the DOP network . There msut be something that we are overlooking . You mentioned that you used the selfs. Antway here is a method that will collide with the pyro mangi smoke_box_collide.hip Quote Link to comment Share on other sites More sharing options...
sparkChan Posted May 27, 2012 Author Share Posted May 27, 2012 Hi , I did check the network. I did not see how to get it to collide there, How ever I did mess around inside the DOP network . There msut be something that we are overlooking . You mentioned that you used the selfs. Antway here is a method that will collide with the pyro mangi thanks for your reply. I used the 'Collide with Objects' in the 'Populate Containers' tab to do the job.so it's the same with rbd object. it works when the cube stops, but when it moves, it not. I do the same setup in H11, and check 'Use Volume Velocity for Collisions' in the 'Collisions' tab under the 'Relationships', it works. I don't know why. thanks. when the cube is moving, it just like the cube is sinking the smoke. but when it stops, the collision is right. Quote Link to comment Share on other sites More sharing options...
luoqiulin Posted May 27, 2012 Share Posted May 27, 2012 bacause your box is a deformed obj, you should add vel information to it or istead your deformed obj to transformed obj. Quote Link to comment Share on other sites More sharing options...
sparkChan Posted May 27, 2012 Author Share Posted May 27, 2012 (edited) bacause your box is a deformed obj, you should add vel information to it or istead your deformed obj to transformed obj. actually I'v added vel to it, but it doesn't change a lot. thanks Edited May 27, 2012 by sparkChan Quote Link to comment Share on other sites More sharing options...
mangi Posted May 27, 2012 Share Posted May 27, 2012 (edited) bacause your box is a deformed obj, you should add vel information to it or istead your deformed obj to transformed obj. Cool. it aactually works if you use a RBD to movee the object thanks for that detail mangi RBD_box_collide.mov Edited May 27, 2012 by mangi Quote Link to comment Share on other sites More sharing options...
mangi Posted May 27, 2012 Share Posted May 27, 2012 (edited) Cool. it actually works if you use a RDB to move the object thanks for that detail mangi It would be cool to see if we could figure out sparkChan method mangi Edited May 27, 2012 by mangi Quote Link to comment Share on other sites More sharing options...
dark_cry Posted January 2, 2013 Share Posted January 2, 2013 hi, I don't know why the smoke can't collide with moved object, and it's just like sinking the smoke not colliding. I just used the shelf tool to set up simulation. thanks. Hi sparkChan, since in H12 the projection method changed to multigrid, there some slight issues with collision. Multigrid is much faster than old method but less accurate, so try to increase multigrid iteration in order to get more accurate collisions. Quote Link to comment Share on other sites More sharing options...
mawi Posted January 2, 2013 Share Posted January 2, 2013 The fluid source SOP builds collision velocity by stamping v attribute from points and on the tube he is using, there are none in the center. Split them out so that you build collision-volume from the surface and collision-velocity from scattered points. smokeCollide.hip 1 Quote Link to comment Share on other sites More sharing options...
kinetic Posted February 16, 2013 Share Posted February 16, 2013 Hello, I'm having a similar issue, but my main object will be stationary. Will this technique work for non moving geometry as well? Quote Link to comment Share on other sites More sharing options...
kinetic Posted February 17, 2013 Share Posted February 17, 2013 (edited) Was able to go through your example and got my volumes to intersect properly. Thanks! Edited February 17, 2013 by kjmitch Quote Link to comment Share on other sites More sharing options...
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