How to convert Assembly to Volume?

[jaydeepsb]

Hello, I am trying to create different 3D shape - sphere, cube, pyramid etc. And I wish to convert it to Volume (and also to numpy array).
However, my steps below result in an error -

import vedo
from vedo import Volume
a = vedo.Sphere(r=10, res=100) + vedo.Sphere(r=9, res=100)
a_vol = vedo.Volume(a)
a_vol.tonumpy()

AttributeError: 'NoneType' object has no attribute 'GetDimensions'
Any idea where I am gettign wrong?

[marcomusy]

Hi, sorry you mean creating a Volume where inside voxels are set to 1 and outer voxels are set to zero? then you can use .binarize()

from vedo import Volume, Sphere, merge, show
a = merge(Sphere(r=12, res=100), Sphere(r=9, res=100))
a_vol = a.binarize(spacing=(0.2,0.2,0.2))
arr = a_vol.tonumpy()
print(arr.shape)
show(a_vol)

[jaydeepsb]

Thank you! binarize works for my case.