Mzigaib Posted May 18, 2015 Share Posted May 18, 2015 If I simply create a pop network with a "location" pop dop or even a source pop dop and I put a expression to emit just on the first frame like "$FF == 1" and align my camera to the Z axis I see this: https://www.youtube.com/watch?v=W-HefI_IgMo I see a wipe pattern of the particle disappearing and I couldn't find a way to get a rid of it and I already tried in 3 different versions of Houdini in Linux and Windows. Anyone else had this particular issue? Anyway to get rid of it? Thanks. Quote Link to comment Share on other sites More sharing options...
Skybar Posted May 18, 2015 Share Posted May 18, 2015 Is it just a viewport problem? Maybe try changing graphics drivers, perhaps to an older one that works. Quote Link to comment Share on other sites More sharing options...
Mzigaib Posted May 18, 2015 Author Share Posted May 18, 2015 No it is not a viewport problem is the way the particles die and are ripped it doesn't happen with the old particle POP. Quote Link to comment Share on other sites More sharing options...
MENOZ Posted May 19, 2015 Share Posted May 19, 2015 It happens if you use life variance attribute and random initial velocity indeed. luckily you can override those attributes, if you create your own lifespan or your own initial velocity the pattern doesn't show up anymore. It must be a strange combination on how attributes are generated during the creation of particles. I would report it to sesi Quote Link to comment Share on other sites More sharing options...
Mzigaib Posted May 19, 2015 Author Share Posted May 19, 2015 The way I do to avoid it is to use a camera looking to the Z axis, the particles are ripped from -X to X+ and yes it happens with velocity variance in place. Good to know that it is not just me. Thanks for the feedback. Quote Link to comment Share on other sites More sharing options...
Skybar Posted May 19, 2015 Share Posted May 19, 2015 (edited) Ah I see. It seems to be related to the seed, and that the same seed is used everywhere (I guess). Diving into the POP Location DOP, into the "setup_life" VOP - alter or replace the seed so that it is unique. edit: Just noticed Jeff Lait answered the same on your crosspost over at sesi, so yeah this is definitely it. Edited May 19, 2015 by Skybar Quote Link to comment Share on other sites More sharing options...
Mzigaib Posted May 19, 2015 Author Share Posted May 19, 2015 Thanks again! 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.