Emi Ochoa Posted January 30, 2015 Share Posted January 30, 2015 Hi I'm pretty new in Houdini 14. I have a scene in which a ball hits it to an object become sand. I wish that the gravity force apply only to collision particles and not to sand object at first. Thanks a lot. PS: I'm Argentinian, sorry for my bad english. Quote Link to comment Share on other sites More sharing options...
kleer001 Posted January 31, 2015 Share Posted January 31, 2015 I can't quite understand what you mean. Can you post a video or a hip file? Quote Link to comment Share on other sites More sharing options...
aboubakrvfx Posted February 4, 2015 Share Posted February 4, 2015 hi there ! i'm new also to houdini and i'm having the same problem to understand the collision detection and other stuff what he mean is we wont that sand fall down with gravity , we need to keep the particles static until it collide with object , something like this https://www.youtube.com/watch?v=4HpaB-kHMBo#t=136 Quote Link to comment Share on other sites More sharing options...
aboubakrvfx Posted February 4, 2015 Share Posted February 4, 2015 ok i found the solution in help file but it need some tweak to get a good result , some particles stay flying but i'll handle it later here the link http://www.sidefx.com/docs/houdini14.0/howto/stablesandpile 1 Quote Link to comment Share on other sites More sharing options...
Emi Ochoa Posted February 10, 2015 Author Share Posted February 10, 2015 ok i found the solution in help file but it need some tweak to get a good result , some particles stay flying but i'll handle it later here the link http://www.sidefx.com/docs/houdini14.0/howto/stablesandpile great!!! thanks aboubakrvfx. I will check in a moment! Quote Link to comment Share on other sites More sharing options...
willow wafflebeard Posted April 30, 2015 Share Posted April 30, 2015 (edited) enable the contraints in the grain source, and in the grain update, set static threshold to 5, enable break constraints and drift threshold to 0.01.give it a few frame to settle. im still testing this as i post it. Edited April 30, 2015 by willow wafflebeard Quote Link to comment Share on other sites More sharing options...
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