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Thursday, January 21, 2010

missing motion blur ? borrow some V !

from gmail chat:
i did a nifty trick today ! (thanx Dave !)

...well nifty for me...

one of my frames for some reason had no motion blur
so on the previous frame and the frame after
i locked copies of the nodes.

Then took the velocity (v) off those - averaged them in a VOPSOP and which also applied the new v to the frame with the missing v.
then a switch SOP to switch between the old node and the fixed node for just that frame !

i feel like the attribute nodes are finally less abstract for me
i think i just needed a practical example of usage to feel comfortable with it


in the image - you can see 2 different ways of achieving this - the first method i used - on th e left is more kunky - more nodes - but it works. The second - the almighty VOPSOP is so elegant !

inside the VOPSOPS are 3 new nodes !




COPS bugs


I know theres a few bug in COPS - but heres one i hadnt seen before

converting from 16 bit tif to 8 bit in a ROP - i got some really funky output.
soon solved however with a conevrt COP before the ROP

Thursday, December 17, 2009

more smokin !

complement displace (along normal affecting only P, not N)
scale -.5
amp 1
defualt shader noise on
complement displace (along normal affecting only P, not N)
scale -.5
amp 1
defualt shader noise off
complement displace (along normal affecting only P, not N)
scale -.5
amp 2
defualt shader noise off
complement displace (along normal affecting only P, not N)
scale .5 - displacing the wrong way ?
amp 2
defualt shader noise off
displace (along normal affecting only P, not N)
scale 1
amp 2
defualt shader noise off
complement displace (along normal affecting only P, not N)
scale 1
amp 2
defualt shader noise off
complement displace (along normal affecting only P, not N)
scale 2
amp 1
defualt shader noise off
complement displace (along normal affecting only P, not N)
scale -2
amp 1
defualt shader noise off
complement displace (along normal affecting only P, not N)
scale1
amp 1
defualt shader noise off
complement displace (along normal affecting only P, not N)
scale -1
amp 1
defualt shader noise off
displace (along normal affecting only P, not N)
scale 1
amp 1
defualt shader noise off
displace (along normal affecting only P, not N)
scale 1
amp 1
defualt shader noise on

no displacement
defualt shader noise on
no displacement,
no noise,
only vorticle action



pyro defaults:
you can see a bit of grey smoke forming from combustion over top of the fire
no scattering here
some lights instanced onto points in the fluid would be cool :)

Sunday, December 13, 2009

plasma

At Cutting Edge, I worked with TD Robert East - http://tenmenmarching.com
and VFX superman Steve Anderson, and producer Jo Gregory, to create
some 'plasma - in a belljar' type visuals for an anti-smoking ad.

I used some post processing on my renders to help the Flame operator
compile the layers into the finished product.

Our plasma was then driven by audio files to give the illusion that the plasma was energized by the voice of the actor.