in your compute myClass is a (uninstanced) class not a string.
anyway, the easiest way is just check the plug like:
if pPlug == myClass.output_t_qqq:
do stuff
elif pPlug == myClass.output_t_rrr:
do other stuff
...
On 25 November 2013 11:26, <[email protected]> wrote:
> Hello everyone,
>
> I have a plugin that defines several output plugs:
>
> output_t_qqq = OpenMaya.MObject()
> output_t_rrr = OpenMaya.MObject()
> output_t_sss = OpenMaya.MObject()
> output_t_ttt = OpenMaya.MObject()
>
> These output plugs get added correctly as an attributes to the class, in
> the nodeInitializer function:
>
> myClass.output_t_qqq = numericAttributeFn.createPoint(
> 'qqq_translate_out', 'qqq_t_out' )
> numericAttributeFn.setWritable( False )
> numericAttributeFn.setStorable( False )
> numericAttributeFn.setHidden( True )
> numericAttributeFn.setReadable(True)
> myClass.addAttribute( myClass.output_t_qqq )
>
> etc...
>
> Here's my question: I want to optimize my compute function by executing a
> particular block if the plug name is .._qqq, or .._rrr, etc. I thought I
> could do this :
>
> def compute(self, pPlug, pDataBlock):
> params = ['qqq', 'rrr', 'sss', 'ttt']
> for param in params:
> if (pPlug == myClass + '.output_t_' + param):
> # do math for the _qqq output attr.
>
> However Maya complains, at the if statement:
>
> "unsupported operand type(s) for +: 'type' and 'str'"
>
>
> So.... performing string concatenation in an expression, inside compute()
> is illegal in some way. What's the legal way of doing this?
>
> Mitch
>
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