dsommers Posted January 18, 2008 Share Posted January 18, 2008 I was animating a short Easter movie amout a lost lamb and things were moving along fairly smoothly until I applied hair to the model. For some reason I am getting these weird moving black squares around the hair of the model. I am pleased with the way the fur turned out but I would rather not have ants swarming the poor lamb. Can anyone rescue this sad lamb from the evil squares? I'm at a loss for what to do. Thank you! David lambtest.mov Quote Link to comment Share on other sites More sharing options...
dsommers Posted January 18, 2008 Author Share Posted January 18, 2008 as far as I can tell, this problem seems to only occur when using an image as the hair emitter. Quote Link to comment Share on other sites More sharing options...
NancyGormezano Posted January 18, 2008 Share Posted January 18, 2008 This problem is looking familiar, and sorry, no I don't remember the solution - Have you tried a simpler emitter image ? and are you rendering with multipass? ie does same problem happen without multipass or no jitter and multipass? AND Very cute lamb and nice animation Quote Link to comment Share on other sites More sharing options...
mtpeak2 Posted January 18, 2008 Share Posted January 18, 2008 Very nice lamb and animation. It's a shame the lamb has fleas. The jitter stands out, try rendering with 0% jitter. You also have 100% direction variation with a 100% face camera, plus only 1 cp (didn't know that was possible), this will most likely have the hair flipping all over the place with a moving model and camera. What version of A:M are you using? Quote Link to comment Share on other sites More sharing options...
Admin Rodney Posted January 18, 2008 Admin Share Posted January 18, 2008 I thought this problem was nailed down in the most recent version. It appeared quite often in the Ku Klip sequence Stian was working on. Outside of the rendering artifacts that is very outstanding work you've got there. Quote Link to comment Share on other sites More sharing options...
John Bigboote Posted January 19, 2008 Share Posted January 19, 2008 Yeah, nice lamb. We would also need to know: What version are you on? What are your render settings? That is wierd alrighty! Quote Link to comment Share on other sites More sharing options...
dsommers Posted January 21, 2008 Author Share Posted January 21, 2008 Thank you all for your kind and generous feedback. I am using v14.0c I have done the suggested experimentation including a simpler emitter and 0 jitter with and without multipass, but the fleas wouldn't leave. This morning I discovered that if I vary the thickness of the hair emitter along it's length from .5" at 0% to .4" at 100% that the problem seems to go away. A strange and mysterious solution but I am feeling hopeful that this will solve the problem. I'll need to do some more test renders to verify. Thanks again! David Quote Link to comment Share on other sites More sharing options...
dsommers Posted January 21, 2008 Author Share Posted January 21, 2008 Varying the thickness of the hair emitter along it's length seems to help, but while the number of artifacts has gone down, the size of the atifact has increased. I upgraded to v15 and the problem still exists. I will continue to experiment. DS lambtest2.mov Quote Link to comment Share on other sites More sharing options...
Wiskey Posted January 22, 2008 Share Posted January 22, 2008 I've seen that when "soften" is turned on in Multipass rendering. Turn it off. Quote Link to comment Share on other sites More sharing options...
John Bigboote Posted January 22, 2008 Share Posted January 22, 2008 WOW! Welcome Wiskey! Post number ONE and it's a 'doozey! Hope to see more of you! Quote Link to comment Share on other sites More sharing options...
dsommers Posted January 23, 2008 Author Share Posted January 23, 2008 I've seen that when "soften" is turned on in Multipass rendering. Turn it off. Thanks Wiskey, I'll give it a try when I get in tomorrow. Quote Link to comment Share on other sites More sharing options...
dsommers Posted January 24, 2008 Author Share Posted January 24, 2008 I've seen that when "soften" is turned on in Multipass rendering. Turn it off. When soften was turned off the "fleas" were gone! Thanks for saving the lamb. Quote Link to comment Share on other sites More sharing options...
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