dvfedele Posted March 26, 2006 Share Posted March 26, 2006 I'm a maya user new to houdini and really love the workflow and would appreciate some help with creating hail using a POP network. I'm using a grid as my particle source with: drag force sop for gravity property sop for dynamic and static friction rotation sop instance sop collision sop for the groundplane collision I'm having problems getting somewhat realistic per particle rotation. I've tried using the rotate sop and wrote an expression to rotate the particles until the first collision, and obviously the rotation instantly stops upon collision. -rotate sop parameters- angle --> rand($ID)*$FF*15 axis type ---> vector if ($NUMHIT > 0 , 0, vector3(rand($ID),rand($ID+1),rand($ID+2))) How can I derive per particle rotations that will slow down as the hail comes to stop due to friction? Any suggestions to my workflow and if this is the best approach. Thanks for your help in advance! Quote Link to comment Share on other sites More sharing options...
soulsonic Posted May 12, 2006 Share Posted May 12, 2006 I'm a maya user new to houdini and really love the workflow and would appreciate some help with creating hail using a POP network. I'm using a grid as my particle source with: Quote Link to comment Share on other sites More sharing options...
michael Posted May 12, 2006 Share Posted May 12, 2006 and the Weather SOP in the SESI Exchange: http://www.sidefx.com/index.php?option=com...pper&Itemid=148 great things to learn from 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.