[Sidefx-houdini-list] Motion blur errors

Ben Schrijvers ben.schrijvers at guerrilla-games.com
Wed Apr 4 12:17:25 EDT 2007

The reason for both Trail Sop and deformation blur to fail is because 
like you say the geometry is changing every frame.
This is mainly because of the "disappear". A solution would be to make 
the tiles disappear *after* the Trail Sop.
Keeping the geometry might be to heavy but it sounds like a simple solution.


Ihab Razek wrote:
> I'm doing an animation of floor tiles so that each tile folds on the 
> one next to it and then disappears and so on.
> I can't use deformation motion blur because the geometry changes every 
> frame.
> When i use a trail sop to compute velocity and then enable velocity 
> attribute motion blur, i get a weird blurring all over the image.
> My guess is that the the velocity vectors are messed up because i copy 
> the row of tiles multiple times to cover the floor.
> I tried adding the trail sop before and after the copy operation but 
> still i get blurring all over the image.
> Any suggestions?
> thanks in advance,
> ihab
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