GUSVFX Posted November 30, 2016 Share Posted November 30, 2016 Houdini FX 15.0.313 Im working towards creating a stream of particles that hits two characters in the scene, mimicking water from a small hose at high pressure. Everything looks great in the view port but when I render the motion blur is sporadic and showing up as if the particles have very jittery motion when all they should be doing is travelling in one general direction. I tried using a trail node to generate velocity data but it doesnt seem to fix the issue. Any ideas as to what is causing this? Any way to get around it? waterSpray.hip Quote Link to comment Share on other sites More sharing options...
Atom Posted November 30, 2016 Share Posted November 30, 2016 Shouldn't the Trail be set to Compute Velocity, not Preserve Original? Quote Link to comment Share on other sites More sharing options...
lukeiamyourfather Posted November 30, 2016 Share Posted November 30, 2016 Particles should inherently have velocity unless you delete it. Also I think the Trail SOP needs consistent point count to work properly. Quote Link to comment Share on other sites More sharing options...
GUSVFX Posted November 30, 2016 Author Share Posted November 30, 2016 setting the Trail SOP to compute velocity does not improve my results. It seems to stem from the fact that I am using geo to emit the particles. When I emit from a point it doesnt have that sporadic movement. Quote Link to comment Share on other sites More sharing options...
GUSVFX Posted December 1, 2016 Author Share Posted December 1, 2016 Turning the Geometry Velocity Blur seems to have solved my issue. I was able to get rid of the Trail SOP and allow my particles to die once again. Quote Link to comment Share on other sites More sharing options...
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