[Sidefx-houdini-list] simple expression problem

Rob Pieké pieke at corefa.com
Thu Jul 27 10:21:24 EDT 2006


> I have tube traveling in y axis up and down
> then I copied ty chanel into another tube rotation y
> like this ch("/obj/null1/ty")
> problem I have is how to write that ty value in ry field will add to 
> itself-now it is going 360 degrees forth and back
> because ty is going from positive to negative value!
> I would like ry to go from 0-xdegrees depending on how many times ty 
> goes up and down
> once its 360, twice is 720 degrees....and stay always in set direction 
> not swinging from + to - value
> I know this is totaly simple for most of the guys out there so dont laugh
> thanks

Is this close to what you're looking for?

I used a CHOP network to grab the slope (velocity), take the absolute 
value, and then take the area (now the absolute distance) and then 
exported a scaled version of that to the rotation.

Cheers!
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