[Sidefx-houdini-list] Falloff between expression and key frame

François Duchesneau sidefx at trinix.ca
Thu Mar 27 09:38:47 EDT 2008


If you use this technique then I suggest to create a preset under the 
gear icon in the parameter window and include the blend and the 3 spare 
channels for x, y and z.

It's easier to delete or update an existing expression than create it 
from scratch.

François

Olex P wrote:
> CHOPs are great but sometimes they are not necessary. You can create (and
> this is a common technique)  a spare channel, something like spareTZ and
> make keyframes for $TZ. Then make a "blend" spare channel which will control
> amount of blend. Then you could mix a noise expression with keyframes using
> fit():
>
> fit(ch("blend"), 0, 1, _your_noise_expression_here_, ch("spareTZ"))
>
> Don't try to use only one technique everywhere! :)
>
> On Thu, Mar 27, 2008 at 1:12 AM, robert east <east.robert at gmail.com> wrote:
>
>   
>> A slight update , I do have a simple set up working.
>>
>> geometry chop > fetch grid
>> geometry chop > fetch grid with noise
>>
>> connect to composite chop
>>
>> Using the effects tab I have been able to blend between the grid and noise
>> grid , but only between  +Z  and Negative Z . I want to blemd between  +X
>> and - X , not figured that part yet !
>>
>> Also ditching the $BBX I have found is a must
>>
>> $TY + noise($TX*3.8 + $FF*0.5 ,$TY ,$TZ*1.7)
>>
>> Rob
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