actually I tried this before and now I`m getting same problem, that
the plug doesn`t exist. this is part of the code
listPlug = OpenMaya.MPlug( nodeObject, node.list )
listCount = listPlug.numElements()
valuesPlug = listPlug.elementByLogicalIndex(listCount)
for i in range(100):
elem = valuesPlug.elementByLogicalIndex(i)
after this I get error, so it seems the plug wasn`t actually created.
The list is compound attribute which is set as array and values is
child attribute, also array, but holds array of floats. Maybe I should
select the child plug not by elementByLogicalIndex but using child()
function. And use elementByLogicalIndex only for single value
elements...
On Oct 29, 1:22 am, Jakub Krompolc <[email protected]> wrote:
> thanks. I didn`t get to work on this again yet, but just went through
> this PDF ILM skinning from A.Maiolo, couple of helpful notes about
> array attributeshttp://www.angelfire.com/ex2/andreamaiolo/skinningAtILM.pdf
>
> On Oct 28, 4:19 pm, Chad Vernon <[email protected]> wrote:
>
>
>
> > No, you cannot use arrayDataBuilder outside of the compute or deform
> > methods.
>
> > On Wed, Oct 28, 2009 at 7:09 AM, Jakub Krompolc
> > <[email protected]>wrote:
>
> > > thanks Chad! will try that. do you think I should still use
> > > buildDataAttribute? I think this wouldn`t make sense anymore...
>
> > > Jakub
>
> > > On Oct 28, 3:18 am, Chad Vernon <[email protected]> wrote:
> > > > MPlug.elementByLogicalIndex(n) will automatically create a plug at that
> > > > index if one doesn't exist there. So your command just needs to find the
> > > > next available index. MPlug.getExistingArrayAttributeIndices will give
> > > you
> > > > the current indices.
>
> > > > -Chad
>
> > > > On Tue, Oct 27, 2009 at 7:03 PM, Jakub Krompolc <
> > > [email protected]>wrote:
>
> > > > > I`m trying to use arrayDataBuilder in the command, but it seems I
> > > > > can`t do that without dataBlock. And as documentation says "The data
> > > > > block is only valid during the compute method of the depend node", it
> > > > > looks like you can`t generate array attributes using command itself,
> > > > > even the node specified...
> > > > > I have made a trigger system (using int value on the node that command
> > > > > changes) to make array in "deform time" of node and this works, but
> > > > > there`s no clean way described for this. skin algorithm example
> > > > > (Writing Creature Deformers DVD) and weighstNode.cpp both don`t show
> > > > > how you technique how user can add his new array. Say, if you`re
> > > > > making a blendShape with multiple targets.
> > > > > Anyone knows more elegant way?
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http://groups.google.com/group/python_inside_maya
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