I am trying to visualize a .stl file using the libraries numpy-stl and mplot3D.

new_mesh = mesh.Mesh.from_file('result.stl')
figure = plt.Figure(figsize=(6.4,5.4), dpi=100) 
ax = mplot3d.Axes3D(figure)
ax.add_collection3d(mplot3d.art3d.Poly3DCollection(new_mesh.vectors))

But in the plot we can barely see any features and its quite flat. Is it possible to add a lightsource option for Poly3DCollections.