5DNick Posted July 18 Share Posted July 18 Dear Forumers, I need a layer to comp for my shot where the floor is lit by a pyro sim that gets REALLY close to it (actually touching). I am using Karma for this project, but understand I MAY have to use Mantra????? Thanks in advance for help =) Nick Quote Link to comment Share on other sites More sharing options...
tamagochy Posted July 18 Share Posted July 18 Add point cloud and instance light on it and use temperature as intensity to emulate lighting. It better than use geo lights from volume Quote Link to comment Share on other sites More sharing options...
5DNick Posted July 18 Author Share Posted July 18 24 minutes ago, tamagochy said: Add point cloud and instance light on it and use temperature as intensity to emulate lighting. It better than use geo lights from volume Sorry, what do you mean by instance light on a point cloud? Quote Link to comment Share on other sites More sharing options...
tamagochy Posted July 18 Share Posted July 18 scatter points on volume and add lights on this points in solaris Quote Link to comment Share on other sites More sharing options...
5DNick Posted July 18 Author Share Posted July 18 Point lights I presume? What's a ball park figure for the number of points? It's kind of medium distance pyro, not hero. Thanks btw Quote Link to comment Share on other sites More sharing options...
tamagochy Posted July 19 Share Posted July 19 The less the best ) Quote Link to comment Share on other sites More sharing options...
5DNick Posted July 20 Author Share Posted July 20 Perfect. I will try this ASAP. Thanks again. Quote Link to comment Share on other sites More sharing options...
5DNick Posted July 20 Author Share Posted July 20 So I have a light node going into the instancer node with points going into the left input. How do I get the intensity to be driven by temperature? Quote Link to comment Share on other sites More sharing options...
5DNick Posted July 23 Author Share Posted July 23 I have put this in intensity: point("/obj/FUEL_SPRAY/PYRO_OUT", instancepoint(), "temperature", 0) as per the manual in this pic What am I doing wrong? If an attribute is a float what should you put in index? A friend suggested that the lights would look for intensity (or certain various attribute) and I should copy temperature to intensity on the points in the geo node? ????? Quote Link to comment Share on other sites More sharing options...
Atom Posted July 23 Share Posted July 23 I think you'd have to post your HIP for someone to debug it. Have you tried replacing instancepoint() with 0? Try zero, that should give you one light. Maybe your temperature is too low or zero? Try multiplying by ten or something... Quote Link to comment Share on other sites More sharing options...
5DNick Posted July 23 Author Share Posted July 23 Hmmmmmmmmm. Strange ... I replaced instancepoint() with 0 then replaced it with instancepoint() again and it seems to work! A bug maybe? Quote Link to comment Share on other sites More sharing options...
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