query soft selection

[Sebastian Schoellhammer]

Hello!

Is there any way of querying the components affected in the current softselection?

If I can't what would be the best way to calculate them myself? Checking against all positions in the mesh must be superslow of course.
I'm sure maya is using some acceleration structures internally to speed this up?

I guess I could grow the selection a couple of times and just use those components but thats wacky and wouldn't work for a volume..
Any ideas?

Thanks!!

seb

[Michiel Duvekot]

Here's an idea: http://www.thnkr.com/wiki/index.php?title=Convert_soft_selection_to_a_cluster

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Michiel

[Chad Vernon]

You can use mglobal.getRichSelection to get the soft selection and the corresponding weights

Sent from my Windows Phone

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From: Sebastian Schoellhammer
Sent: Monday, July 04, 2011 3:21 PM
To: python_in...@googlegroups.com
Subject: [Maya-Python] query soft selection

[br...@meljunky.com]

Here is what I done recently to achieve the soft selection results.

 

import maya.OpenMaya as OpenMaya

def softSelection():
    #Grab the soft selection
    selection = OpenMaya.MSelectionList()
    softSelection = OpenMaya.MRichSelection()
    OpenMaya.MGlobal.getRichSelection(softSelection)
    softSelection.getSelection(selection)
   
    dagPath = OpenMaya.MDagPath()
    component = OpenMaya.MObject()
   
    # Filter Defeats the purpose of the else statement
    iter = OpenMaya.MItSelectionList( selection,OpenMaya.MFn.kMeshVertComponent )

    elements, weights = [], []
    while not iter.isDone():
        iter.getDagPath( dagPath, component )
        dagPath.pop() #Grab the parent of the shape node
        node = dagPath.fullPathName()
        fnComp = OpenMaya.MFnSingleIndexedComponent(component)   

        getWeight = lambda i: fnComp.weight(i).influence() if fnComp.hasWeights() else 1.0
       
        for i in range(fnComp.elementCount()):
            elements.append('%s.vtx[%i]' % (node, fnComp.element(i)))
            weights.append(getWeight(i)) 

        iter.next()
       
    return elements, weights
elements,weights = softSelection() 

 

 

-Brian Escribano

www.meljunky.com

 

-------- Original Message --------
Subject: Re: [Maya-Python] query soft selection
From: Michiel Duvekot <mduv...@gmail.com>
Date: Mon, July 04, 2011 3:32 pm
To: python_in...@googlegroups.com

Here's an idea: http://www.thnkr.com/wiki/index.php?title=Convert_soft_selection_to_a_cluster

On Mon, Jul 4, 2011 at 6:21 PM, Sebastian Schoellhammer <sschoellha...@gmail.com> wrote:

Hello!

Is there any way of querying the components affected in the current softselection?

If I can't what would be the best way to calculate them myself? Checking against all positions in the mesh must be superslow of course.
I'm sure maya is using some acceleration structures internally to speed this up?

I guess I could grow the selection a couple of times and just use those components but thats wacky and wouldn't work for a volume..
Any ideas?

Thanks!!

seb

 

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Michiel

[Sebastian Schoellhammer]

Thanks everybody for the replies, so helpful!