Access faces of a mesh based on their ouput colour

[priyabiswas12]

Hi there,

I have a mesh whose faces id like to access based on the output colour as seen above. For example, id like to access the traingles in blue in the above example. Is there a bulit-in method to do this? Thank you

[marcomusy]

Yes with add_ids

mesh.add_ids()
print(mesh.pointdata["PointID"])
print(mesh.pointdata["Gauss_Curvature"])

[priyabiswas12]

sorry, i meant how do I retrieve the ID of the triangles shaded in blue in the above example?

[marcomusy]

You can associate data to points (vertices) or to faces (cells) in vedo.
Curvature is computed on points. You can interpolate it to triangle faces with map_points_to_cells() here.

Once you have them you can threshold your arrays with normal numpy commands.
Let me know if it is not clear.