Blendshape get base weights

[johan Borgström]

Hi,

I want to be able to get and set the base weights of a blendshape. In the example below I am using pymel to get the base weights. If I first edit the weights in the component editor and then run the script it returns a tuple of weights, but if I have not manually edited the weights I get an empty tuple back. The same is true if I view the node in the node editor, first the baseWeight slot is empty but if I edit the weights, the weights are displayed.

How can I get and set the base weights programatically using pymel? is that possible?

crv_1 = pm.curve(d=1, p=[(0,0,0), (10,10,0)], n='crv_1')

crv_2 = pm.curve(d=1, p=[(0,0,0), (10,0,0)], n='crv_2')

bs = pm.blendShape(crv_1, crv_2)[0]

bs_weights = bs.inputTarget[0].baseWeights.get()

print(bs_weights)

BR,

Johan

[johan Borgström]

For completion, here is what I found out. If I loop through the cvs and set the weights, it works as expected.

crv_1 = pm.curve(d=1, p=[(0,5,0), (10,10,0)], n='crv_1')

crv_2 = pm.curve(d=1, p=[(0,0,0), (10,0,0)], n='crv_2')

bs = pm.blendShape(crv_1, crv_2)[0]

print(bs.inputTarget[0].baseWeights.get())

# result: ()

num_cvs = crv_2.getShape().numCVs()

# set the weights

for index in range(num_cvs):

    bs.inputTarget[0].baseWeights[index].set(1)

print(bs.inputTarget[0].baseWeights.get())

# result: (1.0, 1.0)

BR,

Johan

[Marcus Ottosson]

Thanks for sharing, Johan.