just a note, I had a chat with someone and it seems I could get the DataBuilder in a command from MPlug... also I had some mistake in initialize method. But please comment anyway if you have something to say, as I might come back with other problem with this thing.
On Oct 25, 9:52 pm, Jakub Krompolc <syntet...@googlemail.com> wrote: > hello, I`m working on python deformer plugin. It`s a node that will > hold several arrays of float values. Those arrays are all under one > compound attribute (set as array as well). I want the same workflow as > Maya blendShape, so user will run a command and add another array when > he wants. The deformer will then compute final result based on arrays > that user added. > First I have set both compound and values attributes as using > arrayDataBuilder, but this only works under the node, not in the > command. But the array creation in the node would need to be triggered > by command somehow. > What I`m doing now is trying to use MPlug in command using > selectAncestorLogicalIndexwhich could create the data, but I`m getting > different errors as if the array couldn`t be made - maybe auto- > creation only works on single value elements? > > Then I have another idea, to make int attribute on a node with number > of arrays. The node would always create one more array if the int > value is the same as current size of array. The command would change > this value to value+1 and so on. This way there would always be one > "free" array for the command to use it and set values. But it sounds > hacky... does anyone know the right way of doing this? > > this is part of the command, array creation part (which doesn`t work): > > #compound attr > listPlug = OpenMaya.MPlug( deformNode, deformerName.list ) > listSize = listPlug.numElements() > > #values attr > valuesPlug = OpenMaya.MPlug( deformNode, deformerName.values ) > valuesPlug.selectAncestorLogicalIndex( listSize, > deformerName.list ) > > pointSize = 1000 #example, size of mesh points > for i in range( pointSize ): > valuesPlug.selectAncestorLogicalIndex( i, > deformerName.values ) > valuesPlug.setValue( 1.2 ) #some value --~--~---------~--~----~------------~-------~--~----~ http://groups.google.com/group/python_inside_maya -~----------~----~----~----~------~----~------~--~---
