chrish Posted July 30, 2009 Share Posted July 30, 2009 I was wondering if anyone knew of a scheme for producing multisegment motion blur for changing topologies. Is there a way to sample geometry velocity blur at multiple segments? thanks, Chris Quote Link to comment Share on other sites More sharing options...
loopyllama Posted July 31, 2009 Share Posted July 31, 2009 I am not sure what you mean by "changing topologies". If you intend "changing" to mean deforming, or moving in space then make sure you have allowed motion blur, geometry velocity blur is turned off of the object, then control your segments of motion blur with the mantra>property>sampling>geo time samples If you mean your point count is changing from frame to frame, you are out of luck. You must compute velocity on the points and turn on Geometry Velocity Blur at the object level. For more details about why changing point counts on surfaces don't work, it is explained quite nicely in the documents installed with houdini. Quote Link to comment Share on other sites More sharing options...
eetu Posted July 31, 2009 Share Posted July 31, 2009 Not an easy problem, yeah. In a pinch you could perhaps supersample - create your geometry at, say, 100fps, try to get a sane 'v' attribute for each, render each copy at 1/#_of_copies opacity.. (or better yet if you could get each copy to be visible 1/#_of_copies fraction of frame time..) eetu. Quote Link to comment Share on other sites More sharing options...
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