[Sidefx-houdini-list] changed inputs

Edward Lam edward at sidefx.com
Fri Jun 1 09:48:27 EDT 2007

Hi Chris,

It should work. Try stripping your problem down to as simple a SOP as 
possible first. And if that doesn't work, try posting your simple code 
to the list. Make sure you're giving it the correct input index. :)

I assume you're using Houdini 7.0 or later though. In earlier versions, 
it would only work for a single input.


Chris Mangnall wrote:
> Hi - HDK question...
> Is there a reliable way to determine if a SOP input has changed at all?  
> I'm using duplicateChangedSource(...) and fetching the 'changed' flag, 
> but the flag returns 0 if i just transform/edit the input points.
> I'm writing a three-input deformer SOP, and there's a whole bunch of 
> heavy processing that only needs to be done if either of the first two 
> inputs have changed.
> c
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