[Sidefx-houdini-list] Offset channel expression

Larry Giunta larry at gcreativestudios.com
Wed Jan 23 13:47:58 EST 2008


Perfect.

Thanks Sean.


On Jan 23, 2008, at 1:39 PM, Sean Lewkiw wrote:

> chf("/obj/null1/xform1/tx", $F + 4)
>
>
> Larry Giunta wrote:
>> Hey Peter,
>>
>> I'm trying to offset a bunch of referenced channels
>>
>> So, for example, in the TX of a translate sop named "xform2", I'd put
>> ch("/obj/null1/xform1/tx")
>>
>> So I'd like to append something to that reference to offset it by x
>> number of frames.
>>
>> Similar to if I wanted to shift the whole curve up in value by 4, I
>> could
>> ch("/obj/null1/xform1/tx") + 4
>>
>> But I want to shift the curve in time here.
>>
>> I hope that makes sense. But it probably is something very simple I'm
>> missing.
>>
>> Thanks
>>
>>
>>
>>
>> On Jan 23, 2008, at 12:56 PM, Peter Robbinson wrote:
>>
>>
>>> Hi,
>>>
>>> Don't you just add or subtract your offset from $F?
>>>
>>> $F+n
>>>
>>> PeterR
>>>
>>> Larry Giunta wrote:
>>>
>>>> Is there a way I can shift or offset ( by  x number of frames ) a
>>>> referenced channel in SOPs with some type of expression.
>>>>
>>>> I know I can do this with Chops. ( fetch, shift, export )
>>>>
>>>> However, I'm looking for a quicker way so I can simply copy and  
>>>> paste
>>>> an expression
>>>> to various SOP and then retype one offset/shift value.
>>>>
>>>> Chops would be perfect, but due to the complexity of the SOP
>>>> network ....... and for
>>>> better speed while still experimenting ( adding and deleting SOPs
>>>> often ),
>>>> I'm hoping to avoid the step of importing and exporting channels to
>>>> Chops if possible.
>>>>
>>>> Thanks is advance for any help.
>>>>
>>>> Larry
>>>>
>>>>
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>>
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>
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