bindPreMatrix in skinCluster

this is little more advanced stuff for riggers. If you want to know more about this basic deformer, how it computes the deformation, watch this tutorial:

http://sunekempf.com/blog/wp-content/movies/bindPreMatrix/bindPreMatrix.html

I actually found it when I needed to make Reset SkinCluster Influence tool and I tried to set WorldMatrix to preBindMatrix. Which was wrong, it needs worldInverseMatrix and Sune`s tutorial helped me here.

And as the tool is so simple, I decided to post it here:

def resetInfluenceMatrices( skinCluster ):

'''
set bindPreMatrix the same as current worldInverseMatrix
for each influence of given skinCluster
'''

infs = mc.listConnections( skinCluster + '.matrix' )

for i, inf in enumerate( infs ):

    m = mc.getAttr( inf + '.worldInverseMatrix' )
    mc.setAttr( skinCluster + '.bindPreMatrix[' + str(i) + ']', m[0], m[1], m[2], m[3], m[4], m[5], m[6], m[7], m[8], m[9], m[10], m[11], m[12], m[13], m[14], m[15], typ= 'matrix' )