Mesh.remove_duplicate_vertices() possible hash collision

[2twenity]

Describe the bug
Given: The mesh is received from Speckle as a list of vertices and faces, but some of the vertices are duplicated.
The mesh was constructed and the following checks were performed:

mesh.is_manifold() -> True
mesh.is_connected() -> False # because some of the vertices are duplicated
mesh.is_valid() -> True
mesh.is_trimesh() -> True

After the usage of a method, the results are following

mesh.remove_duplicate_vertices()

mesh.is_manifold() -> True
mesh.is_connected() -> True # The connectivity was fixed
mesh.is_valid() -> False 
mesh.is_trimesh() -> False # Probably because of the TOL.geometric_key some collision happens

Instead, if a comparison of equality of vertices is done in way when we compare sets of coordinates directly, doesn't cause this collision

def validate_mesh(input_mesh: Mesh) -> Mesh:
    input_coordinates = [tuple(input_mesh.vertex_coordinates(vertex)) for vertex in input_mesh.vertices()]
    no_duplicates_coordinates = list(set([tuple(input_mesh.vertex_coordinates(vertex)) for vertex in input_mesh.vertices()]))
 
    
    all_updated_faces = []
    
    for face in sorted(list(input_mesh.faces())):
        vertices_lst = input_mesh.face_vertices(face) # vertices list like [12, 13, 14]
    
       
        vertex0 = input_coordinates[vertices_lst[0]]
        vertex1 = input_coordinates[vertices_lst[1]]
        vertex2 = input_coordinates[vertices_lst[2]]

        new_index0 = no_duplicates_coordinates.index(vertex0)
        new_index1 = no_duplicates_coordinates.index(vertex1)
        new_index2 = no_duplicates_coordinates.index(vertex2)

        updated_faces = [new_index0, new_index1, new_index2]
        # print(updated_faces)

        all_updated_faces.append(updated_faces)

  
    new_mesh = Mesh.from_vertices_and_faces(vertices = no_duplicates_coordinates,
                                           faces = all_updated_faces)

    return new_mesh

The result

new_mesh = validate_mesh(mesh)

new_mesh.is_manifold() -> True
new_mesh.is_connected() -> True 
new_mesh.is_valid() -> True
new_mesh.is_trimesh() -> True

Since there are no specific tests for a mesh.remove_duplicate_vertices() function, I'd assume that it's reasonable to modify it a bit. If needed, I'd be happy to contribute.

To Reproduce
Steps to reproduce the behavior:

1. Context [Jupyter Notebook, latest compas installed]
2. Sample data

Mesh itself

[(1.624855, 4.584075, 3.408143), (1.624855, 4.470224, 3.4), (1.624855, 4.470224, 3.4)]
[(1.624855, 4.470224, 3.4), (1.624855, 4.470224, 3.8), (1.624855, 4.52715, 3.804071)]
[(1.624855, 4.866152, 4.143074), (1.624855, 4.870224, 4.2), (1.624855, 5.270224, 4.2)]
[(1.624855, 5.270224, 4.2), (1.624855, 5.262081, 4.086148), (1.624855, 5.237818, 3.974614)]
[(1.624855, 5.237818, 3.974614), (1.624855, 5.197929, 3.867668), (1.624855, 5.143226, 3.767487)]
[(1.624855, 5.143226, 3.767487), (1.624855, 5.074823, 3.676111), (1.624855, 4.994112, 3.5954)]
[(1.624855, 4.994112, 3.5954), (1.624855, 4.902736, 3.526997), (1.624855, 4.802556, 3.472294)]
[(1.624855, 4.802556, 3.472294), (1.624855, 4.69561, 3.432406), (1.624855, 4.584075, 3.408143)]
[(1.624855, 4.584075, 3.408143), (1.624855, 4.470224, 3.4), (1.624855, 4.52715, 3.804071)]
[(1.624855, 4.854021, 4.087307), (1.624855, 4.866152, 4.143074), (1.624855, 5.270224, 4.2)]
[(1.624855, 5.270224, 4.2), (1.624855, 5.237818, 3.974614), (1.624855, 5.143226, 3.767487)]
[(1.624855, 5.143226, 3.767487), (1.624855, 4.994112, 3.5954), (1.624855, 4.802556, 3.472294)]
[(1.624855, 4.802556, 3.472294), (1.624855, 4.584075, 3.408143), (1.624855, 4.52715, 3.804071)]
[(1.624855, 4.834076, 4.033834), (1.624855, 4.854021, 4.087307), (1.624855, 5.270224, 4.2)]
[(1.624855, 5.270224, 4.2), (1.624855, 5.143226, 3.767487), (1.624855, 4.802556, 3.472294)]
[(1.624855, 4.802556, 3.472294), (1.624855, 4.52715, 3.804071), (1.624855, 4.582917, 3.816203)]
[(1.624855, 4.806725, 3.983744), (1.624855, 4.834076, 4.033834), (1.624855, 5.270224, 4.2)]
[(1.624855, 4.802556, 3.472294), (1.624855, 4.582917, 3.816203), (1.624855, 4.63639, 3.836147)]
[(1.624855, 4.772523, 3.938056), (1.624855, 4.806725, 3.983744), (1.624855, 5.270224, 4.2)]
[(1.624855, 4.802556, 3.472294), (1.624855, 4.63639, 3.836147), (1.624855, 4.68648, 3.863499)]
[(1.624855, 4.732168, 3.8977), (1.624855, 4.772523, 3.938056), (1.624855, 5.270224, 4.2)]
[(1.624855, 5.270224, 4.2), (1.624855, 4.802556, 3.472294), (1.624855, 4.68648, 3.863499)]
[(1.624855, 4.68648, 3.863499), (1.624855, 4.732168, 3.8977), (1.624855, 5.270224, 4.2)]
[(2.024855, 4.584075, 3.408143), (2.024855, 4.470224, 3.4), (2.024855, 4.470224, 3.4)]
[(2.024855, 4.470224, 3.4), (2.024855, 4.52715, 3.804071), (2.024855, 4.470224, 3.8)]
[(2.024855, 4.866152, 4.143074), (2.024855, 5.270224, 4.2), (2.024855, 4.870224, 4.2)]
[(2.024855, 5.270224, 4.2), (2.024855, 5.237818, 3.974614), (2.024855, 5.262081, 4.086148)]
[(2.024855, 5.237818, 3.974614), (2.024855, 5.143226, 3.767487), (2.024855, 5.197929, 3.867668)]
[(2.024855, 5.143226, 3.767487), (2.024855, 4.994112, 3.5954), (2.024855, 5.074823, 3.676111)]
[(2.024855, 4.994112, 3.5954), (2.024855, 4.802556, 3.472294), (2.024855, 4.902736, 3.526997)]
[(2.024855, 4.802556, 3.472294), (2.024855, 4.584075, 3.408143), (2.024855, 4.69561, 3.432406)]
[(2.024855, 4.584075, 3.408143), (2.024855, 4.52715, 3.804071), (2.024855, 4.470224, 3.4)]
[(2.024855, 4.854021, 4.087307), (2.024855, 5.270224, 4.2), (2.024855, 4.866152, 4.143074)]
[(2.024855, 5.270224, 4.2), (2.024855, 5.143226, 3.767487), (2.024855, 5.237818, 3.974614)]
[(2.024855, 5.143226, 3.767487), (2.024855, 4.802556, 3.472294), (2.024855, 4.994112, 3.5954)]
[(2.024855, 4.802556, 3.472294), (2.024855, 4.52715, 3.804071), (2.024855, 4.584075, 3.408143)]
[(2.024855, 4.834076, 4.033834), (2.024855, 5.270224, 4.2), (2.024855, 4.854021, 4.087307)]
[(2.024855, 5.270224, 4.2), (2.024855, 4.802556, 3.472294), (2.024855, 5.143226, 3.767487)]
[(2.024855, 4.802556, 3.472294), (2.024855, 4.582917, 3.816203), (2.024855, 4.52715, 3.804071)]
[(2.024855, 4.806725, 3.983744), (2.024855, 5.270224, 4.2), (2.024855, 4.834076, 4.033834)]
[(2.024855, 4.802556, 3.472294), (2.024855, 4.63639, 3.836147), (2.024855, 4.582917, 3.816203)]
[(2.024855, 4.772523, 3.938056), (2.024855, 5.270224, 4.2), (2.024855, 4.806725, 3.983744)]
[(2.024855, 4.802556, 3.472294), (2.024855, 4.68648, 3.863499), (2.024855, 4.63639, 3.836147)]
[(2.024855, 4.732168, 3.8977), (2.024855, 5.270224, 4.2), (2.024855, 4.772523, 3.938056)]
[(2.024855, 5.270224, 4.2), (2.024855, 4.68648, 3.863499), (2.024855, 4.802556, 3.472294)]
[(2.024855, 4.68648, 3.863499), (2.024855, 5.270224, 4.2), (2.024855, 4.732168, 3.8977)]
[(2.024855, 4.470224, 3.4), (1.624855, 4.470224, 3.8), (1.624855, 4.470224, 3.4)]
[(2.024855, 4.470224, 3.4), (2.024855, 4.470224, 3.8), (1.624855, 4.470224, 3.8)]
[(2.024855, 4.470224, 3.8), (1.624855, 4.52715, 3.804071), (1.624855, 4.470224, 3.8)]
[(2.024855, 4.470224, 3.8), (2.024855, 4.52715, 3.804071), (1.624855, 4.52715, 3.804071)]
[(2.024855, 4.52715, 3.804071), (1.624855, 4.582917, 3.816203), (1.624855, 4.52715, 3.804071)]
[(2.024855, 4.52715, 3.804071), (2.024855, 4.582917, 3.816203), (1.624855, 4.582917, 3.816203)]
[(2.024855, 4.582917, 3.816203), (1.624855, 4.63639, 3.836147), (1.624855, 4.582917, 3.816203)]
[(2.024855, 4.582917, 3.816203), (2.024855, 4.63639, 3.836147), (1.624855, 4.63639, 3.836147)]
[(2.024855, 4.63639, 3.836147), (1.624855, 4.68648, 3.863499), (1.624855, 4.63639, 3.836147)]
[(2.024855, 4.63639, 3.836147), (2.024855, 4.68648, 3.863499), (1.624855, 4.68648, 3.863499)]
[(2.024855, 4.68648, 3.863499), (1.624855, 4.732168, 3.8977), (1.624855, 4.68648, 3.863499)]
[(2.024855, 4.68648, 3.863499), (2.024855, 4.732168, 3.8977), (1.624855, 4.732168, 3.8977)]
[(2.024855, 4.732168, 3.8977), (1.624855, 4.772523, 3.938056), (1.624855, 4.732168, 3.8977)]
[(2.024855, 4.732168, 3.8977), (2.024855, 4.772523, 3.938056), (1.624855, 4.772523, 3.938056)]
[(2.024855, 4.772523, 3.938056), (1.624855, 4.806725, 3.983744), (1.624855, 4.772523, 3.938056)]
[(2.024855, 4.772523, 3.938056), (2.024855, 4.806725, 3.983744), (1.624855, 4.806725, 3.983744)]
[(2.024855, 4.806725, 3.983744), (1.624855, 4.834076, 4.033834), (1.624855, 4.806725, 3.983744)]
[(2.024855, 4.806725, 3.983744), (2.024855, 4.834076, 4.033834), (1.624855, 4.834076, 4.033834)]
[(2.024855, 4.834076, 4.033834), (1.624855, 4.854021, 4.087307), (1.624855, 4.834076, 4.033834)]
[(2.024855, 4.834076, 4.033834), (2.024855, 4.854021, 4.087307), (1.624855, 4.854021, 4.087307)]
[(2.024855, 4.854021, 4.087307), (1.624855, 4.866152, 4.143074), (1.624855, 4.854021, 4.087307)]
[(2.024855, 4.854021, 4.087307), (2.024855, 4.866152, 4.143074), (1.624855, 4.866152, 4.143074)]
[(2.024855, 4.866152, 4.143074), (1.624855, 4.870224, 4.2), (1.624855, 4.866152, 4.143074)]
[(2.024855, 4.866152, 4.143074), (2.024855, 4.870224, 4.2), (1.624855, 4.870224, 4.2)]
[(2.024855, 4.870224, 4.2), (1.624855, 5.270224, 4.2), (1.624855, 4.870224, 4.2)]
[(2.024855, 4.870224, 4.2), (2.024855, 5.270224, 4.2), (1.624855, 5.270224, 4.2)]
[(2.024855, 5.270224, 4.2), (1.624855, 5.262081, 4.086148), (1.624855, 5.270224, 4.2)]
[(2.024855, 5.270224, 4.2), (2.024855, 5.262081, 4.086148), (1.624855, 5.262081, 4.086148)]
[(2.024855, 5.262081, 4.086148), (1.624855, 5.237818, 3.974614), (1.624855, 5.262081, 4.086148)]
[(2.024855, 5.262081, 4.086148), (2.024855, 5.237818, 3.974614), (1.624855, 5.237818, 3.974614)]
[(2.024855, 5.237818, 3.974614), (1.624855, 5.197929, 3.867668), (1.624855, 5.237818, 3.974614)]
[(2.024855, 5.237818, 3.974614), (2.024855, 5.197929, 3.867668), (1.624855, 5.197929, 3.867668)]
[(2.024855, 5.197929, 3.867668), (1.624855, 5.143226, 3.767487), (1.624855, 5.197929, 3.867668)]
[(2.024855, 5.197929, 3.867668), (2.024855, 5.143226, 3.767487), (1.624855, 5.143226, 3.767487)]
[(2.024855, 5.143226, 3.767487), (1.624855, 5.074823, 3.676111), (1.624855, 5.143226, 3.767487)]
[(2.024855, 5.143226, 3.767487), (2.024855, 5.074823, 3.676111), (1.624855, 5.074823, 3.676111)]
[(2.024855, 5.074823, 3.676111), (1.624855, 4.994112, 3.5954), (1.624855, 5.074823, 3.676111)]
[(2.024855, 5.074823, 3.676111), (2.024855, 4.994112, 3.5954), (1.624855, 4.994112, 3.5954)]
[(2.024855, 4.994112, 3.5954), (1.624855, 4.902736, 3.526997), (1.624855, 4.994112, 3.5954)]
[(2.024855, 4.994112, 3.5954), (2.024855, 4.902736, 3.526997), (1.624855, 4.902736, 3.526997)]
[(2.024855, 4.902736, 3.526997), (1.624855, 4.802556, 3.472294), (1.624855, 4.902736, 3.526997)]
[(2.024855, 4.902736, 3.526997), (2.024855, 4.802556, 3.472294), (1.624855, 4.802556, 3.472294)]
[(2.024855, 4.802556, 3.472294), (1.624855, 4.69561, 3.432406), (1.624855, 4.802556, 3.472294)]
[(2.024855, 4.802556, 3.472294), (2.024855, 4.69561, 3.432406), (1.624855, 4.69561, 3.432406)]
[(2.024855, 4.69561, 3.432406), (1.624855, 4.584075, 3.408143), (1.624855, 4.69561, 3.432406)]
[(2.024855, 4.69561, 3.432406), (2.024855, 4.584075, 3.408143), (1.624855, 4.584075, 3.408143)]
[(2.024855, 4.584075, 3.408143), (1.624855, 4.470224, 3.4), (1.624855, 4.584075, 3.408143)]
[(2.024855, 4.584075, 3.408143), (2.024855, 4.470224, 3.4), (1.624855, 4.470224, 3.4)]

4. See error
   Viewer fails to visualize because trimesh structure is broken
   Screenshots

Desktop (please complete the following information):

• iOS M4
• Python version 3.12
• Python package manager Conda

[tomvanmele]

hi,

thanks for posting this!
have you tried changing the precision setting?

for example

mesh.remove_duplicate_vertices(precision=6)

[tomvanmele]

perhaps we could also add a flag regrading the method of comparison: hash (default) v. coordinates

or something like that

[2twenity]

As for the precision parameter, sure. I just double-checked it and the result was the same.

mesh.remove_duplicate_vertices(precision=6)

mesh.is_manifold() -> True
mesh.is_connected() -> True 
mesh.is_valid() -> False 
mesh.is_trimesh() -> False 

[tomvanmele]

the mesh is defined with the triplets of vertices above?

[tomvanmele]

from compas.datastructures import Mesh
from compas_viewer import Viewer

triangles = [
    [(1.624855, 4.584075, 3.408143), (1.624855, 4.470224, 3.4), (1.624855, 4.470224, 3.4)],
    [(1.624855, 4.470224, 3.4), (1.624855, 4.470224, 3.8), (1.624855, 4.52715, 3.804071)],
    [(1.624855, 4.866152, 4.143074), (1.624855, 4.870224, 4.2), (1.624855, 5.270224, 4.2)],
    [(1.624855, 5.270224, 4.2), (1.624855, 5.262081, 4.086148), (1.624855, 5.237818, 3.974614)],
    [(1.624855, 5.237818, 3.974614), (1.624855, 5.197929, 3.867668), (1.624855, 5.143226, 3.767487)],
    [(1.624855, 5.143226, 3.767487), (1.624855, 5.074823, 3.676111), (1.624855, 4.994112, 3.5954)],
    [(1.624855, 4.994112, 3.5954), (1.624855, 4.902736, 3.526997), (1.624855, 4.802556, 3.472294)],
    [(1.624855, 4.802556, 3.472294), (1.624855, 4.69561, 3.432406), (1.624855, 4.584075, 3.408143)],
    [(1.624855, 4.584075, 3.408143), (1.624855, 4.470224, 3.4), (1.624855, 4.52715, 3.804071)],
    [(1.624855, 4.854021, 4.087307), (1.624855, 4.866152, 4.143074), (1.624855, 5.270224, 4.2)],
    [(1.624855, 5.270224, 4.2), (1.624855, 5.237818, 3.974614), (1.624855, 5.143226, 3.767487)],
    [(1.624855, 5.143226, 3.767487), (1.624855, 4.994112, 3.5954), (1.624855, 4.802556, 3.472294)],
    [(1.624855, 4.802556, 3.472294), (1.624855, 4.584075, 3.408143), (1.624855, 4.52715, 3.804071)],
    [(1.624855, 4.834076, 4.033834), (1.624855, 4.854021, 4.087307), (1.624855, 5.270224, 4.2)],
    [(1.624855, 5.270224, 4.2), (1.624855, 5.143226, 3.767487), (1.624855, 4.802556, 3.472294)],
    [(1.624855, 4.802556, 3.472294), (1.624855, 4.52715, 3.804071), (1.624855, 4.582917, 3.816203)],
    [(1.624855, 4.806725, 3.983744), (1.624855, 4.834076, 4.033834), (1.624855, 5.270224, 4.2)],
    [(1.624855, 4.802556, 3.472294), (1.624855, 4.582917, 3.816203), (1.624855, 4.63639, 3.836147)],
    [(1.624855, 4.772523, 3.938056), (1.624855, 4.806725, 3.983744), (1.624855, 5.270224, 4.2)],
    [(1.624855, 4.802556, 3.472294), (1.624855, 4.63639, 3.836147), (1.624855, 4.68648, 3.863499)],
    [(1.624855, 4.732168, 3.8977), (1.624855, 4.772523, 3.938056), (1.624855, 5.270224, 4.2)],
    [(1.624855, 5.270224, 4.2), (1.624855, 4.802556, 3.472294), (1.624855, 4.68648, 3.863499)],
    [(1.624855, 4.68648, 3.863499), (1.624855, 4.732168, 3.8977), (1.624855, 5.270224, 4.2)],
    [(2.024855, 4.584075, 3.408143), (2.024855, 4.470224, 3.4), (2.024855, 4.470224, 3.4)],
    [(2.024855, 4.470224, 3.4), (2.024855, 4.52715, 3.804071), (2.024855, 4.470224, 3.8)],
    [(2.024855, 4.866152, 4.143074), (2.024855, 5.270224, 4.2), (2.024855, 4.870224, 4.2)],
    [(2.024855, 5.270224, 4.2), (2.024855, 5.237818, 3.974614), (2.024855, 5.262081, 4.086148)],
    [(2.024855, 5.237818, 3.974614), (2.024855, 5.143226, 3.767487), (2.024855, 5.197929, 3.867668)],
    [(2.024855, 5.143226, 3.767487), (2.024855, 4.994112, 3.5954), (2.024855, 5.074823, 3.676111)],
    [(2.024855, 4.994112, 3.5954), (2.024855, 4.802556, 3.472294), (2.024855, 4.902736, 3.526997)],
    [(2.024855, 4.802556, 3.472294), (2.024855, 4.584075, 3.408143), (2.024855, 4.69561, 3.432406)],
    [(2.024855, 4.584075, 3.408143), (2.024855, 4.52715, 3.804071), (2.024855, 4.470224, 3.4)],
    [(2.024855, 4.854021, 4.087307), (2.024855, 5.270224, 4.2), (2.024855, 4.866152, 4.143074)],
    [(2.024855, 5.270224, 4.2), (2.024855, 5.143226, 3.767487), (2.024855, 5.237818, 3.974614)],
    [(2.024855, 5.143226, 3.767487), (2.024855, 4.802556, 3.472294), (2.024855, 4.994112, 3.5954)],
    [(2.024855, 4.802556, 3.472294), (2.024855, 4.52715, 3.804071), (2.024855, 4.584075, 3.408143)],
    [(2.024855, 4.834076, 4.033834), (2.024855, 5.270224, 4.2), (2.024855, 4.854021, 4.087307)],
    [(2.024855, 5.270224, 4.2), (2.024855, 4.802556, 3.472294), (2.024855, 5.143226, 3.767487)],
    [(2.024855, 4.802556, 3.472294), (2.024855, 4.582917, 3.816203), (2.024855, 4.52715, 3.804071)],
    [(2.024855, 4.806725, 3.983744), (2.024855, 5.270224, 4.2), (2.024855, 4.834076, 4.033834)],
    [(2.024855, 4.802556, 3.472294), (2.024855, 4.63639, 3.836147), (2.024855, 4.582917, 3.816203)],
    [(2.024855, 4.772523, 3.938056), (2.024855, 5.270224, 4.2), (2.024855, 4.806725, 3.983744)],
    [(2.024855, 4.802556, 3.472294), (2.024855, 4.68648, 3.863499), (2.024855, 4.63639, 3.836147)],
    [(2.024855, 4.732168, 3.8977), (2.024855, 5.270224, 4.2), (2.024855, 4.772523, 3.938056)],
    [(2.024855, 5.270224, 4.2), (2.024855, 4.68648, 3.863499), (2.024855, 4.802556, 3.472294)],
    [(2.024855, 4.68648, 3.863499), (2.024855, 5.270224, 4.2), (2.024855, 4.732168, 3.8977)],
    [(2.024855, 4.470224, 3.4), (1.624855, 4.470224, 3.8), (1.624855, 4.470224, 3.4)],
    [(2.024855, 4.470224, 3.4), (2.024855, 4.470224, 3.8), (1.624855, 4.470224, 3.8)],
    [(2.024855, 4.470224, 3.8), (1.624855, 4.52715, 3.804071), (1.624855, 4.470224, 3.8)],
    [(2.024855, 4.470224, 3.8), (2.024855, 4.52715, 3.804071), (1.624855, 4.52715, 3.804071)],
    [(2.024855, 4.52715, 3.804071), (1.624855, 4.582917, 3.816203), (1.624855, 4.52715, 3.804071)],
    [(2.024855, 4.52715, 3.804071), (2.024855, 4.582917, 3.816203), (1.624855, 4.582917, 3.816203)],
    [(2.024855, 4.582917, 3.816203), (1.624855, 4.63639, 3.836147), (1.624855, 4.582917, 3.816203)],
    [(2.024855, 4.582917, 3.816203), (2.024855, 4.63639, 3.836147), (1.624855, 4.63639, 3.836147)],
    [(2.024855, 4.63639, 3.836147), (1.624855, 4.68648, 3.863499), (1.624855, 4.63639, 3.836147)],
    [(2.024855, 4.63639, 3.836147), (2.024855, 4.68648, 3.863499), (1.624855, 4.68648, 3.863499)],
    [(2.024855, 4.68648, 3.863499), (1.624855, 4.732168, 3.8977), (1.624855, 4.68648, 3.863499)],
    [(2.024855, 4.68648, 3.863499), (2.024855, 4.732168, 3.8977), (1.624855, 4.732168, 3.8977)],
    [(2.024855, 4.732168, 3.8977), (1.624855, 4.772523, 3.938056), (1.624855, 4.732168, 3.8977)],
    [(2.024855, 4.732168, 3.8977), (2.024855, 4.772523, 3.938056), (1.624855, 4.772523, 3.938056)],
    [(2.024855, 4.772523, 3.938056), (1.624855, 4.806725, 3.983744), (1.624855, 4.772523, 3.938056)],
    [(2.024855, 4.772523, 3.938056), (2.024855, 4.806725, 3.983744), (1.624855, 4.806725, 3.983744)],
    [(2.024855, 4.806725, 3.983744), (1.624855, 4.834076, 4.033834), (1.624855, 4.806725, 3.983744)],
    [(2.024855, 4.806725, 3.983744), (2.024855, 4.834076, 4.033834), (1.624855, 4.834076, 4.033834)],
    [(2.024855, 4.834076, 4.033834), (1.624855, 4.854021, 4.087307), (1.624855, 4.834076, 4.033834)],
    [(2.024855, 4.834076, 4.033834), (2.024855, 4.854021, 4.087307), (1.624855, 4.854021, 4.087307)],
    [(2.024855, 4.854021, 4.087307), (1.624855, 4.866152, 4.143074), (1.624855, 4.854021, 4.087307)],
    [(2.024855, 4.854021, 4.087307), (2.024855, 4.866152, 4.143074), (1.624855, 4.866152, 4.143074)],
    [(2.024855, 4.866152, 4.143074), (1.624855, 4.870224, 4.2), (1.624855, 4.866152, 4.143074)],
    [(2.024855, 4.866152, 4.143074), (2.024855, 4.870224, 4.2), (1.624855, 4.870224, 4.2)],
    [(2.024855, 4.870224, 4.2), (1.624855, 5.270224, 4.2), (1.624855, 4.870224, 4.2)],
    [(2.024855, 4.870224, 4.2), (2.024855, 5.270224, 4.2), (1.624855, 5.270224, 4.2)],
    [(2.024855, 5.270224, 4.2), (1.624855, 5.262081, 4.086148), (1.624855, 5.270224, 4.2)],
    [(2.024855, 5.270224, 4.2), (2.024855, 5.262081, 4.086148), (1.624855, 5.262081, 4.086148)],
    [(2.024855, 5.262081, 4.086148), (1.624855, 5.237818, 3.974614), (1.624855, 5.262081, 4.086148)],
    [(2.024855, 5.262081, 4.086148), (2.024855, 5.237818, 3.974614), (1.624855, 5.237818, 3.974614)],
    [(2.024855, 5.237818, 3.974614), (1.624855, 5.197929, 3.867668), (1.624855, 5.237818, 3.974614)],
    [(2.024855, 5.237818, 3.974614), (2.024855, 5.197929, 3.867668), (1.624855, 5.197929, 3.867668)],
    [(2.024855, 5.197929, 3.867668), (1.624855, 5.143226, 3.767487), (1.624855, 5.197929, 3.867668)],
    [(2.024855, 5.197929, 3.867668), (2.024855, 5.143226, 3.767487), (1.624855, 5.143226, 3.767487)],
    [(2.024855, 5.143226, 3.767487), (1.624855, 5.074823, 3.676111), (1.624855, 5.143226, 3.767487)],
    [(2.024855, 5.143226, 3.767487), (2.024855, 5.074823, 3.676111), (1.624855, 5.074823, 3.676111)],
    [(2.024855, 5.074823, 3.676111), (1.624855, 4.994112, 3.5954), (1.624855, 5.074823, 3.676111)],
    [(2.024855, 5.074823, 3.676111), (2.024855, 4.994112, 3.5954), (1.624855, 4.994112, 3.5954)],
    [(2.024855, 4.994112, 3.5954), (1.624855, 4.902736, 3.526997), (1.624855, 4.994112, 3.5954)],
    [(2.024855, 4.994112, 3.5954), (2.024855, 4.902736, 3.526997), (1.624855, 4.902736, 3.526997)],
    [(2.024855, 4.902736, 3.526997), (1.624855, 4.802556, 3.472294), (1.624855, 4.902736, 3.526997)],
    [(2.024855, 4.902736, 3.526997), (2.024855, 4.802556, 3.472294), (1.624855, 4.802556, 3.472294)],
    [(2.024855, 4.802556, 3.472294), (1.624855, 4.69561, 3.432406), (1.624855, 4.802556, 3.472294)],
    [(2.024855, 4.802556, 3.472294), (2.024855, 4.69561, 3.432406), (1.624855, 4.69561, 3.432406)],
    [(2.024855, 4.69561, 3.432406), (1.624855, 4.584075, 3.408143), (1.624855, 4.69561, 3.432406)],
    [(2.024855, 4.69561, 3.432406), (2.024855, 4.584075, 3.408143), (1.624855, 4.584075, 3.408143)],
    [(2.024855, 4.584075, 3.408143), (1.624855, 4.470224, 3.4), (1.624855, 4.584075, 3.408143)],
    [(2.024855, 4.584075, 3.408143), (2.024855, 4.470224, 3.4), (1.624855, 4.470224, 3.4)],
]

mesh = Mesh.from_polygons(triangles)
mesh.remove_duplicate_vertices()

print(mesh.is_manifold())
print(mesh.is_connected())
print(mesh.is_valid())
print(mesh.is_trimesh())

viewer = Viewer()
viewer.scene.add(mesh)
viewer.show()

[tomvanmele]

[tomvanmele]

i get True for all print statements.

[tomvanmele]

this is not what you're looking for?

[2twenity]

Maybe I've pasted already cleaned mesh, let me double check

[2twenity]

Interesting that rebuilding Mesh from coordinates only automatically removes duplicates.

from 194 to 48 vertices

Here's a list of faces, hope it helps to reproduce the initial mesh

faces = [
[23, 24, 0],
[0, 1, 2],
[11, 12, 13],
[13, 14, 15],
[15, 16, 17],
[17, 18, 19],
[19, 20, 21],
[21, 22, 23],
[23, 0, 2],
[10, 11, 13],
[13, 15, 17],
[17, 19, 21],
[21, 23, 2],
[9, 10, 13],
[13, 17, 21],
[21, 2, 3],
[8, 9, 13],
[21, 3, 4],
[7, 8, 13],
[21, 4, 5],
[6, 7, 13],
[13, 21, 5],
[5, 6, 13],
[48, 25, 49],
[25, 27, 26],
[36, 38, 37],
[38, 40, 39],
[40, 42, 41],
[42, 44, 43],
[44, 46, 45],
[46, 48, 47],
[48, 27, 25],
[35, 38, 36],
[38, 42, 40],
[42, 46, 44],
[46, 27, 48],
[34, 38, 35],
[38, 46, 42],
[46, 28, 27],
[33, 38, 34],
[46, 29, 28],
[32, 38, 33],
[46, 30, 29],
[31, 38, 32],
[38, 30, 46],
[30, 38, 31],
[50, 51, 52],
[53, 54, 55],
[56, 57, 58],
[59, 60, 61],
[62, 63, 64],
[65, 66, 67],
[68, 69, 70],
[71, 72, 73],
[74, 75, 76],
[77, 78, 79],
[80, 81, 82],
[83, 84, 85],
[86, 87, 88],
[89, 90, 91],
[92, 93, 94],
[95, 96, 97],
[98, 99, 100],
[101, 102, 103],
[104, 105, 106],
[107, 108, 109],
[110, 111, 112],
[113, 114, 115],
[116, 117, 118],
[119, 120, 121],
[122, 123, 124],
[125, 126, 127],
[128, 129, 130],
[131, 132, 133],
[134, 135, 136],
[137, 138, 139],
[140, 141, 142],
[143, 144, 145],
[146, 147, 148],
[149, 150, 151],
[152, 153, 154],
[155, 156, 157],
[158, 159, 160],
[161, 162, 163],
[164, 165, 166],
[167, 168, 169],
[170, 171, 172],
[173, 174, 175],
[176, 177, 178],
[179, 180, 181],
[182, 183, 184],
[185, 186, 187],
[188, 189, 190],
[191, 192, 193]]

Double checked vertices as well

vertices = [
[(1.624855, 4.584075, 3.408143), (1.624855, 4.470224, 3.4), (1.624855, 4.470224, 3.4)],
[(1.624855, 4.470224, 3.4), (1.624855, 4.470224, 3.8), (1.624855, 4.52715, 3.804071)],
[(1.624855, 4.866152, 4.143074), (1.624855, 4.870224, 4.2), (1.624855, 5.270224, 4.2)],
[(1.624855, 5.270224, 4.2), (1.624855, 5.262081, 4.086148), (1.624855, 5.237818, 3.974614)],
[(1.624855, 5.237818, 3.974614), (1.624855, 5.197929, 3.867668), (1.624855, 5.143226, 3.767487)],
[(1.624855, 5.143226, 3.767487), (1.624855, 5.074823, 3.676111), (1.624855, 4.994112, 3.5954)],
[(1.624855, 4.994112, 3.5954), (1.624855, 4.902736, 3.526997), (1.624855, 4.802556, 3.472294)],
[(1.624855, 4.802556, 3.472294), (1.624855, 4.69561, 3.432406), (1.624855, 4.584075, 3.408143)],
[(1.624855, 4.584075, 3.408143), (1.624855, 4.470224, 3.4), (1.624855, 4.52715, 3.804071)],
[(1.624855, 4.854021, 4.087307), (1.624855, 4.866152, 4.143074), (1.624855, 5.270224, 4.2)],
[(1.624855, 5.270224, 4.2), (1.624855, 5.237818, 3.974614), (1.624855, 5.143226, 3.767487)],
[(1.624855, 5.143226, 3.767487), (1.624855, 4.994112, 3.5954), (1.624855, 4.802556, 3.472294)],
[(1.624855, 4.802556, 3.472294), (1.624855, 4.584075, 3.408143), (1.624855, 4.52715, 3.804071)],
[(1.624855, 4.834076, 4.033834), (1.624855, 4.854021, 4.087307), (1.624855, 5.270224, 4.2)],
[(1.624855, 5.270224, 4.2), (1.624855, 5.143226, 3.767487), (1.624855, 4.802556, 3.472294)],
[(1.624855, 4.802556, 3.472294), (1.624855, 4.52715, 3.804071), (1.624855, 4.582917, 3.816203)],
[(1.624855, 4.806725, 3.983744), (1.624855, 4.834076, 4.033834), (1.624855, 5.270224, 4.2)],
[(1.624855, 4.802556, 3.472294), (1.624855, 4.582917, 3.816203), (1.624855, 4.63639, 3.836147)],
[(1.624855, 4.772523, 3.938056), (1.624855, 4.806725, 3.983744), (1.624855, 5.270224, 4.2)],
[(1.624855, 4.802556, 3.472294), (1.624855, 4.63639, 3.836147), (1.624855, 4.68648, 3.863499)],
[(1.624855, 4.732168, 3.8977), (1.624855, 4.772523, 3.938056), (1.624855, 5.270224, 4.2)],
[(1.624855, 5.270224, 4.2), (1.624855, 4.802556, 3.472294), (1.624855, 4.68648, 3.863499)],
[(1.624855, 4.68648, 3.863499), (1.624855, 4.732168, 3.8977), (1.624855, 5.270224, 4.2)],
[(2.024855, 4.584075, 3.408143), (2.024855, 4.470224, 3.4), (2.024855, 4.470224, 3.4)],
[(2.024855, 4.470224, 3.4), (2.024855, 4.52715, 3.804071), (2.024855, 4.470224, 3.8)],
[(2.024855, 4.866152, 4.143074), (2.024855, 5.270224, 4.2), (2.024855, 4.870224, 4.2)],
[(2.024855, 5.270224, 4.2), (2.024855, 5.237818, 3.974614), (2.024855, 5.262081, 4.086148)],
[(2.024855, 5.237818, 3.974614), (2.024855, 5.143226, 3.767487), (2.024855, 5.197929, 3.867668)],
[(2.024855, 5.143226, 3.767487), (2.024855, 4.994112, 3.5954), (2.024855, 5.074823, 3.676111)],
[(2.024855, 4.994112, 3.5954), (2.024855, 4.802556, 3.472294), (2.024855, 4.902736, 3.526997)],
[(2.024855, 4.802556, 3.472294), (2.024855, 4.584075, 3.408143), (2.024855, 4.69561, 3.432406)],
[(2.024855, 4.584075, 3.408143), (2.024855, 4.52715, 3.804071), (2.024855, 4.470224, 3.4)],
[(2.024855, 4.854021, 4.087307), (2.024855, 5.270224, 4.2), (2.024855, 4.866152, 4.143074)],
[(2.024855, 5.270224, 4.2), (2.024855, 5.143226, 3.767487), (2.024855, 5.237818, 3.974614)],
[(2.024855, 5.143226, 3.767487), (2.024855, 4.802556, 3.472294), (2.024855, 4.994112, 3.5954)],
[(2.024855, 4.802556, 3.472294), (2.024855, 4.52715, 3.804071), (2.024855, 4.584075, 3.408143)],
[(2.024855, 4.834076, 4.033834), (2.024855, 5.270224, 4.2), (2.024855, 4.854021, 4.087307)],
[(2.024855, 5.270224, 4.2), (2.024855, 4.802556, 3.472294), (2.024855, 5.143226, 3.767487)],
[(2.024855, 4.802556, 3.472294), (2.024855, 4.582917, 3.816203), (2.024855, 4.52715, 3.804071)],
[(2.024855, 4.806725, 3.983744), (2.024855, 5.270224, 4.2), (2.024855, 4.834076, 4.033834)],
[(2.024855, 4.802556, 3.472294), (2.024855, 4.63639, 3.836147), (2.024855, 4.582917, 3.816203)],
[(2.024855, 4.772523, 3.938056), (2.024855, 5.270224, 4.2), (2.024855, 4.806725, 3.983744)],
[(2.024855, 4.802556, 3.472294), (2.024855, 4.68648, 3.863499), (2.024855, 4.63639, 3.836147)],
[(2.024855, 4.732168, 3.8977), (2.024855, 5.270224, 4.2), (2.024855, 4.772523, 3.938056)],
[(2.024855, 5.270224, 4.2), (2.024855, 4.68648, 3.863499), (2.024855, 4.802556, 3.472294)],
[(2.024855, 4.68648, 3.863499), (2.024855, 5.270224, 4.2), (2.024855, 4.732168, 3.8977)],
[(2.024855, 4.470224, 3.4), (1.624855, 4.470224, 3.8), (1.624855, 4.470224, 3.4)],
[(2.024855, 4.470224, 3.4), (2.024855, 4.470224, 3.8), (1.624855, 4.470224, 3.8)],
[(2.024855, 4.470224, 3.8), (1.624855, 4.52715, 3.804071), (1.624855, 4.470224, 3.8)],
[(2.024855, 4.470224, 3.8), (2.024855, 4.52715, 3.804071), (1.624855, 4.52715, 3.804071)],
[(2.024855, 4.52715, 3.804071), (1.624855, 4.582917, 3.816203), (1.624855, 4.52715, 3.804071)],
[(2.024855, 4.52715, 3.804071), (2.024855, 4.582917, 3.816203), (1.624855, 4.582917, 3.816203)],
[(2.024855, 4.582917, 3.816203), (1.624855, 4.63639, 3.836147), (1.624855, 4.582917, 3.816203)],
[(2.024855, 4.582917, 3.816203), (2.024855, 4.63639, 3.836147), (1.624855, 4.63639, 3.836147)],
[(2.024855, 4.63639, 3.836147), (1.624855, 4.68648, 3.863499), (1.624855, 4.63639, 3.836147)],
[(2.024855, 4.63639, 3.836147), (2.024855, 4.68648, 3.863499), (1.624855, 4.68648, 3.863499)],
[(2.024855, 4.68648, 3.863499), (1.624855, 4.732168, 3.8977), (1.624855, 4.68648, 3.863499)],
[(2.024855, 4.68648, 3.863499), (2.024855, 4.732168, 3.8977), (1.624855, 4.732168, 3.8977)],
[(2.024855, 4.732168, 3.8977), (1.624855, 4.772523, 3.938056), (1.624855, 4.732168, 3.8977)],
[(2.024855, 4.732168, 3.8977), (2.024855, 4.772523, 3.938056), (1.624855, 4.772523, 3.938056)],
[(2.024855, 4.772523, 3.938056), (1.624855, 4.806725, 3.983744), (1.624855, 4.772523, 3.938056)],
[(2.024855, 4.772523, 3.938056), (2.024855, 4.806725, 3.983744), (1.624855, 4.806725, 3.983744)],
[(2.024855, 4.806725, 3.983744), (1.624855, 4.834076, 4.033834), (1.624855, 4.806725, 3.983744)],
[(2.024855, 4.806725, 3.983744), (2.024855, 4.834076, 4.033834), (1.624855, 4.834076, 4.033834)],
[(2.024855, 4.834076, 4.033834), (1.624855, 4.854021, 4.087307), (1.624855, 4.834076, 4.033834)],
[(2.024855, 4.834076, 4.033834), (2.024855, 4.854021, 4.087307), (1.624855, 4.854021, 4.087307)],
[(2.024855, 4.854021, 4.087307), (1.624855, 4.866152, 4.143074), (1.624855, 4.854021, 4.087307)],
[(2.024855, 4.854021, 4.087307), (2.024855, 4.866152, 4.143074), (1.624855, 4.866152, 4.143074)],
[(2.024855, 4.866152, 4.143074), (1.624855, 4.870224, 4.2), (1.624855, 4.866152, 4.143074)],
[(2.024855, 4.866152, 4.143074), (2.024855, 4.870224, 4.2), (1.624855, 4.870224, 4.2)],
[(2.024855, 4.870224, 4.2), (1.624855, 5.270224, 4.2), (1.624855, 4.870224, 4.2)],
[(2.024855, 4.870224, 4.2), (2.024855, 5.270224, 4.2), (1.624855, 5.270224, 4.2)],
[(2.024855, 5.270224, 4.2), (1.624855, 5.262081, 4.086148), (1.624855, 5.270224, 4.2)],
[(2.024855, 5.270224, 4.2), (2.024855, 5.262081, 4.086148), (1.624855, 5.262081, 4.086148)],
[(2.024855, 5.262081, 4.086148), (1.624855, 5.237818, 3.974614), (1.624855, 5.262081, 4.086148)],
[(2.024855, 5.262081, 4.086148), (2.024855, 5.237818, 3.974614), (1.624855, 5.237818, 3.974614)],
[(2.024855, 5.237818, 3.974614), (1.624855, 5.197929, 3.867668), (1.624855, 5.237818, 3.974614)],
[(2.024855, 5.237818, 3.974614), (2.024855, 5.197929, 3.867668), (1.624855, 5.197929, 3.867668)],
[(2.024855, 5.197929, 3.867668), (1.624855, 5.143226, 3.767487), (1.624855, 5.197929, 3.867668)],
[(2.024855, 5.197929, 3.867668), (2.024855, 5.143226, 3.767487), (1.624855, 5.143226, 3.767487)],
[(2.024855, 5.143226, 3.767487), (1.624855, 5.074823, 3.676111), (1.624855, 5.143226, 3.767487)],
[(2.024855, 5.143226, 3.767487), (2.024855, 5.074823, 3.676111), (1.624855, 5.074823, 3.676111)],
[(2.024855, 5.074823, 3.676111), (1.624855, 4.994112, 3.5954), (1.624855, 5.074823, 3.676111)],
[(2.024855, 5.074823, 3.676111), (2.024855, 4.994112, 3.5954), (1.624855, 4.994112, 3.5954)],
[(2.024855, 4.994112, 3.5954), (1.624855, 4.902736, 3.526997), (1.624855, 4.994112, 3.5954)],
[(2.024855, 4.994112, 3.5954), (2.024855, 4.902736, 3.526997), (1.624855, 4.902736, 3.526997)],
[(2.024855, 4.902736, 3.526997), (1.624855, 4.802556, 3.472294), (1.624855, 4.902736, 3.526997)],
[(2.024855, 4.902736, 3.526997), (2.024855, 4.802556, 3.472294), (1.624855, 4.802556, 3.472294)],
[(2.024855, 4.802556, 3.472294), (1.624855, 4.69561, 3.432406), (1.624855, 4.802556, 3.472294)],
[(2.024855, 4.802556, 3.472294), (2.024855, 4.69561, 3.432406), (1.624855, 4.69561, 3.432406)],
[(2.024855, 4.69561, 3.432406), (1.624855, 4.584075, 3.408143), (1.624855, 4.69561, 3.432406)],
[(2.024855, 4.69561, 3.432406), (2.024855, 4.584075, 3.408143), (1.624855, 4.584075, 3.408143)],
[(2.024855, 4.584075, 3.408143), (1.624855, 4.470224, 3.4), (1.624855, 4.584075, 3.408143)],
[(2.024855, 4.584075, 3.408143), (2.024855, 4.470224, 3.4), (1.624855, 4.470224, 3.4)]]

[2twenity]

Vertices as a 1d list

vertices = [
[1.624855, 4.470224, 3.4],
[1.624855, 4.470224, 3.8],
[1.624855, 4.52715, 3.804071],
[1.624855, 4.582917, 3.816203],
[1.624855, 4.63639, 3.836147],
[1.624855, 4.68648, 3.863499],
[1.624855, 4.732168, 3.8977],
[1.624855, 4.772523, 3.938056],
[1.624855, 4.806725, 3.983744],
[1.624855, 4.834076, 4.033834],
[1.624855, 4.854021, 4.087307],
[1.624855, 4.866152, 4.143074],
[1.624855, 4.870224, 4.2],
[1.624855, 5.270224, 4.2],
[1.624855, 5.262081, 4.086148],
[1.624855, 5.237818, 3.974614],
[1.624855, 5.197929, 3.867668],
[1.624855, 5.143226, 3.767487],
[1.624855, 5.074823, 3.676111],
[1.624855, 4.994112, 3.5954],
[1.624855, 4.902736, 3.526997],
[1.624855, 4.802556, 3.472294],
[1.624855, 4.69561, 3.432406],
[1.624855, 4.584075, 3.408143],
[1.624855, 4.470224, 3.4],
[2.024855, 4.470224, 3.4],
[2.024855, 4.470224, 3.8],
[2.024855, 4.52715, 3.804071],
[2.024855, 4.582917, 3.816203],
[2.024855, 4.63639, 3.836147],
[2.024855, 4.68648, 3.863499],
[2.024855, 4.732168, 3.8977],
[2.024855, 4.772523, 3.938056],
[2.024855, 4.806725, 3.983744],
[2.024855, 4.834076, 4.033834],
[2.024855, 4.854021, 4.087307],
[2.024855, 4.866152, 4.143074],
[2.024855, 4.870224, 4.2],
[2.024855, 5.270224, 4.2],
[2.024855, 5.262081, 4.086148],
[2.024855, 5.237818, 3.974614],
[2.024855, 5.197929, 3.867668],
[2.024855, 5.143226, 3.767487],
[2.024855, 5.074823, 3.676111],
[2.024855, 4.994112, 3.5954],
[2.024855, 4.902736, 3.526997],
[2.024855, 4.802556, 3.472294],
[2.024855, 4.69561, 3.432406],
[2.024855, 4.584075, 3.408143],
[2.024855, 4.470224, 3.4],
[2.024855, 4.470224, 3.4],
[1.624855, 4.470224, 3.8],
[1.624855, 4.470224, 3.4],
[2.024855, 4.470224, 3.4],
[2.024855, 4.470224, 3.8],
[1.624855, 4.470224, 3.8],
[2.024855, 4.470224, 3.8],
[1.624855, 4.52715, 3.804071],
[1.624855, 4.470224, 3.8],
[2.024855, 4.470224, 3.8],
[2.024855, 4.52715, 3.804071],
[1.624855, 4.52715, 3.804071],
[2.024855, 4.52715, 3.804071],
[1.624855, 4.582917, 3.816203],
[1.624855, 4.52715, 3.804071],
[2.024855, 4.52715, 3.804071],
[2.024855, 4.582917, 3.816203],
[1.624855, 4.582917, 3.816203],
[2.024855, 4.582917, 3.816203],
[1.624855, 4.63639, 3.836147],
[1.624855, 4.582917, 3.816203],
[2.024855, 4.582917, 3.816203],
[2.024855, 4.63639, 3.836147],
[1.624855, 4.63639, 3.836147],
[2.024855, 4.63639, 3.836147],
[1.624855, 4.68648, 3.863499],
[1.624855, 4.63639, 3.836147],
[2.024855, 4.63639, 3.836147],
[2.024855, 4.68648, 3.863499],
[1.624855, 4.68648, 3.863499],
[2.024855, 4.68648, 3.863499],
[1.624855, 4.732168, 3.8977],
[1.624855, 4.68648, 3.863499],
[2.024855, 4.68648, 3.863499],
[2.024855, 4.732168, 3.8977],
[1.624855, 4.732168, 3.8977],
[2.024855, 4.732168, 3.8977],
[1.624855, 4.772523, 3.938056],
[1.624855, 4.732168, 3.8977],
[2.024855, 4.732168, 3.8977],
[2.024855, 4.772523, 3.938056],
[1.624855, 4.772523, 3.938056],
[2.024855, 4.772523, 3.938056],
[1.624855, 4.806725, 3.983744],
[1.624855, 4.772523, 3.938056],
[2.024855, 4.772523, 3.938056],
[2.024855, 4.806725, 3.983744],
[1.624855, 4.806725, 3.983744],
[2.024855, 4.806725, 3.983744],
[1.624855, 4.834076, 4.033834],
[1.624855, 4.806725, 3.983744],
[2.024855, 4.806725, 3.983744],
[2.024855, 4.834076, 4.033834],
[1.624855, 4.834076, 4.033834],
[2.024855, 4.834076, 4.033834],
[1.624855, 4.854021, 4.087307],
[1.624855, 4.834076, 4.033834],
[2.024855, 4.834076, 4.033834],
[2.024855, 4.854021, 4.087307],
[1.624855, 4.854021, 4.087307],
[2.024855, 4.854021, 4.087307],
[1.624855, 4.866152, 4.143074],
[1.624855, 4.854021, 4.087307],
[2.024855, 4.854021, 4.087307],
[2.024855, 4.866152, 4.143074],
[1.624855, 4.866152, 4.143074],
[2.024855, 4.866152, 4.143074],
[1.624855, 4.870224, 4.2],
[1.624855, 4.866152, 4.143074],
[2.024855, 4.866152, 4.143074],
[2.024855, 4.870224, 4.2],
[1.624855, 4.870224, 4.2],
[2.024855, 4.870224, 4.2],
[1.624855, 5.270224, 4.2],
[1.624855, 4.870224, 4.2],
[2.024855, 4.870224, 4.2],
[2.024855, 5.270224, 4.2],
[1.624855, 5.270224, 4.2],
[2.024855, 5.270224, 4.2],
[1.624855, 5.262081, 4.086148],
[1.624855, 5.270224, 4.2],
[2.024855, 5.270224, 4.2],
[2.024855, 5.262081, 4.086148],
[1.624855, 5.262081, 4.086148],
[2.024855, 5.262081, 4.086148],
[1.624855, 5.237818, 3.974614],
[1.624855, 5.262081, 4.086148],
[2.024855, 5.262081, 4.086148],
[2.024855, 5.237818, 3.974614],
[1.624855, 5.237818, 3.974614],
[2.024855, 5.237818, 3.974614],
[1.624855, 5.197929, 3.867668],
[1.624855, 5.237818, 3.974614],
[2.024855, 5.237818, 3.974614],
[2.024855, 5.197929, 3.867668],
[1.624855, 5.197929, 3.867668],
[2.024855, 5.197929, 3.867668],
[1.624855, 5.143226, 3.767487],
[1.624855, 5.197929, 3.867668],
[2.024855, 5.197929, 3.867668],
[2.024855, 5.143226, 3.767487],
[1.624855, 5.143226, 3.767487],
[2.024855, 5.143226, 3.767487],
[1.624855, 5.074823, 3.676111],
[1.624855, 5.143226, 3.767487],
[2.024855, 5.143226, 3.767487],
[2.024855, 5.074823, 3.676111],
[1.624855, 5.074823, 3.676111],
[2.024855, 5.074823, 3.676111],
[1.624855, 4.994112, 3.5954],
[1.624855, 5.074823, 3.676111],
[2.024855, 5.074823, 3.676111],
[2.024855, 4.994112, 3.5954],
[1.624855, 4.994112, 3.5954],
[2.024855, 4.994112, 3.5954],
[1.624855, 4.902736, 3.526997],
[1.624855, 4.994112, 3.5954],
[2.024855, 4.994112, 3.5954],
[2.024855, 4.902736, 3.526997],
[1.624855, 4.902736, 3.526997],
[2.024855, 4.902736, 3.526997],
[1.624855, 4.802556, 3.472294],
[1.624855, 4.902736, 3.526997],
[2.024855, 4.902736, 3.526997],
[2.024855, 4.802556, 3.472294],
[1.624855, 4.802556, 3.472294],
[2.024855, 4.802556, 3.472294],
[1.624855, 4.69561, 3.432406],
[1.624855, 4.802556, 3.472294],
[2.024855, 4.802556, 3.472294],
[2.024855, 4.69561, 3.432406],
[1.624855, 4.69561, 3.432406],
[2.024855, 4.69561, 3.432406],
[1.624855, 4.584075, 3.408143],
[1.624855, 4.69561, 3.432406],
[2.024855, 4.69561, 3.432406],
[2.024855, 4.584075, 3.408143],
[1.624855, 4.584075, 3.408143],
[2.024855, 4.584075, 3.408143],
[1.624855, 4.470224, 3.4],
[1.624855, 4.584075, 3.408143],
[2.024855, 4.584075, 3.408143],
[2.024855, 4.470224, 3.4],
[1.624855, 4.470224, 3.4],
]

[tomvanmele]

thanks, will have a look. tomorrow though :)

[tomvanmele]

from compas.datastructures import Mesh
from compas_viewer import Viewer

faces = [
    [23, 24, 0],
    [0, 1, 2],
    [11, 12, 13],
    [13, 14, 15],
    [15, 16, 17],
    [17, 18, 19],
    [19, 20, 21],
    [21, 22, 23],
    [23, 0, 2],
    [10, 11, 13],
    [13, 15, 17],
    [17, 19, 21],
    [21, 23, 2],
    [9, 10, 13],
    [13, 17, 21],
    [21, 2, 3],
    [8, 9, 13],
    [21, 3, 4],
    [7, 8, 13],
    [21, 4, 5],
    [6, 7, 13],
    [13, 21, 5],
    [5, 6, 13],
    [48, 25, 49],
    [25, 27, 26],
    [36, 38, 37],
    [38, 40, 39],
    [40, 42, 41],
    [42, 44, 43],
    [44, 46, 45],
    [46, 48, 47],
    [48, 27, 25],
    [35, 38, 36],
    [38, 42, 40],
    [42, 46, 44],
    [46, 27, 48],
    [34, 38, 35],
    [38, 46, 42],
    [46, 28, 27],
    [33, 38, 34],
    [46, 29, 28],
    [32, 38, 33],
    [46, 30, 29],
    [31, 38, 32],
    [38, 30, 46],
    [30, 38, 31],
    [50, 51, 52],
    [53, 54, 55],
    [56, 57, 58],
    [59, 60, 61],
    [62, 63, 64],
    [65, 66, 67],
    [68, 69, 70],
    [71, 72, 73],
    [74, 75, 76],
    [77, 78, 79],
    [80, 81, 82],
    [83, 84, 85],
    [86, 87, 88],
    [89, 90, 91],
    [92, 93, 94],
    [95, 96, 97],
    [98, 99, 100],
    [101, 102, 103],
    [104, 105, 106],
    [107, 108, 109],
    [110, 111, 112],
    [113, 114, 115],
    [116, 117, 118],
    [119, 120, 121],
    [122, 123, 124],
    [125, 126, 127],
    [128, 129, 130],
    [131, 132, 133],
    [134, 135, 136],
    [137, 138, 139],
    [140, 141, 142],
    [143, 144, 145],
    [146, 147, 148],
    [149, 150, 151],
    [152, 153, 154],
    [155, 156, 157],
    [158, 159, 160],
    [161, 162, 163],
    [164, 165, 166],
    [167, 168, 169],
    [170, 171, 172],
    [173, 174, 175],
    [176, 177, 178],
    [179, 180, 181],
    [182, 183, 184],
    [185, 186, 187],
    [188, 189, 190],
    [191, 192, 193],
]

vertices = [
    [1.624855, 4.470224, 3.4],
    [1.624855, 4.470224, 3.8],
    [1.624855, 4.52715, 3.804071],
    [1.624855, 4.582917, 3.816203],
    [1.624855, 4.63639, 3.836147],
    [1.624855, 4.68648, 3.863499],
    [1.624855, 4.732168, 3.8977],
    [1.624855, 4.772523, 3.938056],
    [1.624855, 4.806725, 3.983744],
    [1.624855, 4.834076, 4.033834],
    [1.624855, 4.854021, 4.087307],
    [1.624855, 4.866152, 4.143074],
    [1.624855, 4.870224, 4.2],
    [1.624855, 5.270224, 4.2],
    [1.624855, 5.262081, 4.086148],
    [1.624855, 5.237818, 3.974614],
    [1.624855, 5.197929, 3.867668],
    [1.624855, 5.143226, 3.767487],
    [1.624855, 5.074823, 3.676111],
    [1.624855, 4.994112, 3.5954],
    [1.624855, 4.902736, 3.526997],
    [1.624855, 4.802556, 3.472294],
    [1.624855, 4.69561, 3.432406],
    [1.624855, 4.584075, 3.408143],
    [1.624855, 4.470224, 3.4],
    [2.024855, 4.470224, 3.4],
    [2.024855, 4.470224, 3.8],
    [2.024855, 4.52715, 3.804071],
    [2.024855, 4.582917, 3.816203],
    [2.024855, 4.63639, 3.836147],
    [2.024855, 4.68648, 3.863499],
    [2.024855, 4.732168, 3.8977],
    [2.024855, 4.772523, 3.938056],
    [2.024855, 4.806725, 3.983744],
    [2.024855, 4.834076, 4.033834],
    [2.024855, 4.854021, 4.087307],
    [2.024855, 4.866152, 4.143074],
    [2.024855, 4.870224, 4.2],
    [2.024855, 5.270224, 4.2],
    [2.024855, 5.262081, 4.086148],
    [2.024855, 5.237818, 3.974614],
    [2.024855, 5.197929, 3.867668],
    [2.024855, 5.143226, 3.767487],
    [2.024855, 5.074823, 3.676111],
    [2.024855, 4.994112, 3.5954],
    [2.024855, 4.902736, 3.526997],
    [2.024855, 4.802556, 3.472294],
    [2.024855, 4.69561, 3.432406],
    [2.024855, 4.584075, 3.408143],
    [2.024855, 4.470224, 3.4],
    [2.024855, 4.470224, 3.4],
    [1.624855, 4.470224, 3.8],
    [1.624855, 4.470224, 3.4],
    [2.024855, 4.470224, 3.4],
    [2.024855, 4.470224, 3.8],
    [1.624855, 4.470224, 3.8],
    [2.024855, 4.470224, 3.8],
    [1.624855, 4.52715, 3.804071],
    [1.624855, 4.470224, 3.8],
    [2.024855, 4.470224, 3.8],
    [2.024855, 4.52715, 3.804071],
    [1.624855, 4.52715, 3.804071],
    [2.024855, 4.52715, 3.804071],
    [1.624855, 4.582917, 3.816203],
    [1.624855, 4.52715, 3.804071],
    [2.024855, 4.52715, 3.804071],
    [2.024855, 4.582917, 3.816203],
    [1.624855, 4.582917, 3.816203],
    [2.024855, 4.582917, 3.816203],
    [1.624855, 4.63639, 3.836147],
    [1.624855, 4.582917, 3.816203],
    [2.024855, 4.582917, 3.816203],
    [2.024855, 4.63639, 3.836147],
    [1.624855, 4.63639, 3.836147],
    [2.024855, 4.63639, 3.836147],
    [1.624855, 4.68648, 3.863499],
    [1.624855, 4.63639, 3.836147],
    [2.024855, 4.63639, 3.836147],
    [2.024855, 4.68648, 3.863499],
    [1.624855, 4.68648, 3.863499],
    [2.024855, 4.68648, 3.863499],
    [1.624855, 4.732168, 3.8977],
    [1.624855, 4.68648, 3.863499],
    [2.024855, 4.68648, 3.863499],
    [2.024855, 4.732168, 3.8977],
    [1.624855, 4.732168, 3.8977],
    [2.024855, 4.732168, 3.8977],
    [1.624855, 4.772523, 3.938056],
    [1.624855, 4.732168, 3.8977],
    [2.024855, 4.732168, 3.8977],
    [2.024855, 4.772523, 3.938056],
    [1.624855, 4.772523, 3.938056],
    [2.024855, 4.772523, 3.938056],
    [1.624855, 4.806725, 3.983744],
    [1.624855, 4.772523, 3.938056],
    [2.024855, 4.772523, 3.938056],
    [2.024855, 4.806725, 3.983744],
    [1.624855, 4.806725, 3.983744],
    [2.024855, 4.806725, 3.983744],
    [1.624855, 4.834076, 4.033834],
    [1.624855, 4.806725, 3.983744],
    [2.024855, 4.806725, 3.983744],
    [2.024855, 4.834076, 4.033834],
    [1.624855, 4.834076, 4.033834],
    [2.024855, 4.834076, 4.033834],
    [1.624855, 4.854021, 4.087307],
    [1.624855, 4.834076, 4.033834],
    [2.024855, 4.834076, 4.033834],
    [2.024855, 4.854021, 4.087307],
    [1.624855, 4.854021, 4.087307],
    [2.024855, 4.854021, 4.087307],
    [1.624855, 4.866152, 4.143074],
    [1.624855, 4.854021, 4.087307],
    [2.024855, 4.854021, 4.087307],
    [2.024855, 4.866152, 4.143074],
    [1.624855, 4.866152, 4.143074],
    [2.024855, 4.866152, 4.143074],
    [1.624855, 4.870224, 4.2],
    [1.624855, 4.866152, 4.143074],
    [2.024855, 4.866152, 4.143074],
    [2.024855, 4.870224, 4.2],
    [1.624855, 4.870224, 4.2],
    [2.024855, 4.870224, 4.2],
    [1.624855, 5.270224, 4.2],
    [1.624855, 4.870224, 4.2],
    [2.024855, 4.870224, 4.2],
    [2.024855, 5.270224, 4.2],
    [1.624855, 5.270224, 4.2],
    [2.024855, 5.270224, 4.2],
    [1.624855, 5.262081, 4.086148],
    [1.624855, 5.270224, 4.2],
    [2.024855, 5.270224, 4.2],
    [2.024855, 5.262081, 4.086148],
    [1.624855, 5.262081, 4.086148],
    [2.024855, 5.262081, 4.086148],
    [1.624855, 5.237818, 3.974614],
    [1.624855, 5.262081, 4.086148],
    [2.024855, 5.262081, 4.086148],
    [2.024855, 5.237818, 3.974614],
    [1.624855, 5.237818, 3.974614],
    [2.024855, 5.237818, 3.974614],
    [1.624855, 5.197929, 3.867668],
    [1.624855, 5.237818, 3.974614],
    [2.024855, 5.237818, 3.974614],
    [2.024855, 5.197929, 3.867668],
    [1.624855, 5.197929, 3.867668],
    [2.024855, 5.197929, 3.867668],
    [1.624855, 5.143226, 3.767487],
    [1.624855, 5.197929, 3.867668],
    [2.024855, 5.197929, 3.867668],
    [2.024855, 5.143226, 3.767487],
    [1.624855, 5.143226, 3.767487],
    [2.024855, 5.143226, 3.767487],
    [1.624855, 5.074823, 3.676111],
    [1.624855, 5.143226, 3.767487],
    [2.024855, 5.143226, 3.767487],
    [2.024855, 5.074823, 3.676111],
    [1.624855, 5.074823, 3.676111],
    [2.024855, 5.074823, 3.676111],
    [1.624855, 4.994112, 3.5954],
    [1.624855, 5.074823, 3.676111],
    [2.024855, 5.074823, 3.676111],
    [2.024855, 4.994112, 3.5954],
    [1.624855, 4.994112, 3.5954],
    [2.024855, 4.994112, 3.5954],
    [1.624855, 4.902736, 3.526997],
    [1.624855, 4.994112, 3.5954],
    [2.024855, 4.994112, 3.5954],
    [2.024855, 4.902736, 3.526997],
    [1.624855, 4.902736, 3.526997],
    [2.024855, 4.902736, 3.526997],
    [1.624855, 4.802556, 3.472294],
    [1.624855, 4.902736, 3.526997],
    [2.024855, 4.902736, 3.526997],
    [2.024855, 4.802556, 3.472294],
    [1.624855, 4.802556, 3.472294],
    [2.024855, 4.802556, 3.472294],
    [1.624855, 4.69561, 3.432406],
    [1.624855, 4.802556, 3.472294],
    [2.024855, 4.802556, 3.472294],
    [2.024855, 4.69561, 3.432406],
    [1.624855, 4.69561, 3.432406],
    [2.024855, 4.69561, 3.432406],
    [1.624855, 4.584075, 3.408143],
    [1.624855, 4.69561, 3.432406],
    [2.024855, 4.69561, 3.432406],
    [2.024855, 4.584075, 3.408143],
    [1.624855, 4.584075, 3.408143],
    [2.024855, 4.584075, 3.408143],
    [1.624855, 4.470224, 3.4],
    [1.624855, 4.584075, 3.408143],
    [2.024855, 4.584075, 3.408143],
    [2.024855, 4.470224, 3.4],
    [1.624855, 4.470224, 3.4],
]

triangles = [
    [(1.624855, 4.584075, 3.408143), (1.624855, 4.470224, 3.4), (1.624855, 4.470224, 3.4)],
    [(1.624855, 4.470224, 3.4), (1.624855, 4.470224, 3.8), (1.624855, 4.52715, 3.804071)],
    [(1.624855, 4.866152, 4.143074), (1.624855, 4.870224, 4.2), (1.624855, 5.270224, 4.2)],
    [(1.624855, 5.270224, 4.2), (1.624855, 5.262081, 4.086148), (1.624855, 5.237818, 3.974614)],
    [(1.624855, 5.237818, 3.974614), (1.624855, 5.197929, 3.867668), (1.624855, 5.143226, 3.767487)],
    [(1.624855, 5.143226, 3.767487), (1.624855, 5.074823, 3.676111), (1.624855, 4.994112, 3.5954)],
    [(1.624855, 4.994112, 3.5954), (1.624855, 4.902736, 3.526997), (1.624855, 4.802556, 3.472294)],
    [(1.624855, 4.802556, 3.472294), (1.624855, 4.69561, 3.432406), (1.624855, 4.584075, 3.408143)],
    [(1.624855, 4.584075, 3.408143), (1.624855, 4.470224, 3.4), (1.624855, 4.52715, 3.804071)],
    [(1.624855, 4.854021, 4.087307), (1.624855, 4.866152, 4.143074), (1.624855, 5.270224, 4.2)],
    [(1.624855, 5.270224, 4.2), (1.624855, 5.237818, 3.974614), (1.624855, 5.143226, 3.767487)],
    [(1.624855, 5.143226, 3.767487), (1.624855, 4.994112, 3.5954), (1.624855, 4.802556, 3.472294)],
    [(1.624855, 4.802556, 3.472294), (1.624855, 4.584075, 3.408143), (1.624855, 4.52715, 3.804071)],
    [(1.624855, 4.834076, 4.033834), (1.624855, 4.854021, 4.087307), (1.624855, 5.270224, 4.2)],
    [(1.624855, 5.270224, 4.2), (1.624855, 5.143226, 3.767487), (1.624855, 4.802556, 3.472294)],
    [(1.624855, 4.802556, 3.472294), (1.624855, 4.52715, 3.804071), (1.624855, 4.582917, 3.816203)],
    [(1.624855, 4.806725, 3.983744), (1.624855, 4.834076, 4.033834), (1.624855, 5.270224, 4.2)],
    [(1.624855, 4.802556, 3.472294), (1.624855, 4.582917, 3.816203), (1.624855, 4.63639, 3.836147)],
    [(1.624855, 4.772523, 3.938056), (1.624855, 4.806725, 3.983744), (1.624855, 5.270224, 4.2)],
    [(1.624855, 4.802556, 3.472294), (1.624855, 4.63639, 3.836147), (1.624855, 4.68648, 3.863499)],
    [(1.624855, 4.732168, 3.8977), (1.624855, 4.772523, 3.938056), (1.624855, 5.270224, 4.2)],
    [(1.624855, 5.270224, 4.2), (1.624855, 4.802556, 3.472294), (1.624855, 4.68648, 3.863499)],
    [(1.624855, 4.68648, 3.863499), (1.624855, 4.732168, 3.8977), (1.624855, 5.270224, 4.2)],
    [(2.024855, 4.584075, 3.408143), (2.024855, 4.470224, 3.4), (2.024855, 4.470224, 3.4)],
    [(2.024855, 4.470224, 3.4), (2.024855, 4.52715, 3.804071), (2.024855, 4.470224, 3.8)],
    [(2.024855, 4.866152, 4.143074), (2.024855, 5.270224, 4.2), (2.024855, 4.870224, 4.2)],
    [(2.024855, 5.270224, 4.2), (2.024855, 5.237818, 3.974614), (2.024855, 5.262081, 4.086148)],
    [(2.024855, 5.237818, 3.974614), (2.024855, 5.143226, 3.767487), (2.024855, 5.197929, 3.867668)],
    [(2.024855, 5.143226, 3.767487), (2.024855, 4.994112, 3.5954), (2.024855, 5.074823, 3.676111)],
    [(2.024855, 4.994112, 3.5954), (2.024855, 4.802556, 3.472294), (2.024855, 4.902736, 3.526997)],
    [(2.024855, 4.802556, 3.472294), (2.024855, 4.584075, 3.408143), (2.024855, 4.69561, 3.432406)],
    [(2.024855, 4.584075, 3.408143), (2.024855, 4.52715, 3.804071), (2.024855, 4.470224, 3.4)],
    [(2.024855, 4.854021, 4.087307), (2.024855, 5.270224, 4.2), (2.024855, 4.866152, 4.143074)],
    [(2.024855, 5.270224, 4.2), (2.024855, 5.143226, 3.767487), (2.024855, 5.237818, 3.974614)],
    [(2.024855, 5.143226, 3.767487), (2.024855, 4.802556, 3.472294), (2.024855, 4.994112, 3.5954)],
    [(2.024855, 4.802556, 3.472294), (2.024855, 4.52715, 3.804071), (2.024855, 4.584075, 3.408143)],
    [(2.024855, 4.834076, 4.033834), (2.024855, 5.270224, 4.2), (2.024855, 4.854021, 4.087307)],
    [(2.024855, 5.270224, 4.2), (2.024855, 4.802556, 3.472294), (2.024855, 5.143226, 3.767487)],
    [(2.024855, 4.802556, 3.472294), (2.024855, 4.582917, 3.816203), (2.024855, 4.52715, 3.804071)],
    [(2.024855, 4.806725, 3.983744), (2.024855, 5.270224, 4.2), (2.024855, 4.834076, 4.033834)],
    [(2.024855, 4.802556, 3.472294), (2.024855, 4.63639, 3.836147), (2.024855, 4.582917, 3.816203)],
    [(2.024855, 4.772523, 3.938056), (2.024855, 5.270224, 4.2), (2.024855, 4.806725, 3.983744)],
    [(2.024855, 4.802556, 3.472294), (2.024855, 4.68648, 3.863499), (2.024855, 4.63639, 3.836147)],
    [(2.024855, 4.732168, 3.8977), (2.024855, 5.270224, 4.2), (2.024855, 4.772523, 3.938056)],
    [(2.024855, 5.270224, 4.2), (2.024855, 4.68648, 3.863499), (2.024855, 4.802556, 3.472294)],
    [(2.024855, 4.68648, 3.863499), (2.024855, 5.270224, 4.2), (2.024855, 4.732168, 3.8977)],
    [(2.024855, 4.470224, 3.4), (1.624855, 4.470224, 3.8), (1.624855, 4.470224, 3.4)],
    [(2.024855, 4.470224, 3.4), (2.024855, 4.470224, 3.8), (1.624855, 4.470224, 3.8)],
    [(2.024855, 4.470224, 3.8), (1.624855, 4.52715, 3.804071), (1.624855, 4.470224, 3.8)],
    [(2.024855, 4.470224, 3.8), (2.024855, 4.52715, 3.804071), (1.624855, 4.52715, 3.804071)],
    [(2.024855, 4.52715, 3.804071), (1.624855, 4.582917, 3.816203), (1.624855, 4.52715, 3.804071)],
    [(2.024855, 4.52715, 3.804071), (2.024855, 4.582917, 3.816203), (1.624855, 4.582917, 3.816203)],
    [(2.024855, 4.582917, 3.816203), (1.624855, 4.63639, 3.836147), (1.624855, 4.582917, 3.816203)],
    [(2.024855, 4.582917, 3.816203), (2.024855, 4.63639, 3.836147), (1.624855, 4.63639, 3.836147)],
    [(2.024855, 4.63639, 3.836147), (1.624855, 4.68648, 3.863499), (1.624855, 4.63639, 3.836147)],
    [(2.024855, 4.63639, 3.836147), (2.024855, 4.68648, 3.863499), (1.624855, 4.68648, 3.863499)],
    [(2.024855, 4.68648, 3.863499), (1.624855, 4.732168, 3.8977), (1.624855, 4.68648, 3.863499)],
    [(2.024855, 4.68648, 3.863499), (2.024855, 4.732168, 3.8977), (1.624855, 4.732168, 3.8977)],
    [(2.024855, 4.732168, 3.8977), (1.624855, 4.772523, 3.938056), (1.624855, 4.732168, 3.8977)],
    [(2.024855, 4.732168, 3.8977), (2.024855, 4.772523, 3.938056), (1.624855, 4.772523, 3.938056)],
    [(2.024855, 4.772523, 3.938056), (1.624855, 4.806725, 3.983744), (1.624855, 4.772523, 3.938056)],
    [(2.024855, 4.772523, 3.938056), (2.024855, 4.806725, 3.983744), (1.624855, 4.806725, 3.983744)],
    [(2.024855, 4.806725, 3.983744), (1.624855, 4.834076, 4.033834), (1.624855, 4.806725, 3.983744)],
    [(2.024855, 4.806725, 3.983744), (2.024855, 4.834076, 4.033834), (1.624855, 4.834076, 4.033834)],
    [(2.024855, 4.834076, 4.033834), (1.624855, 4.854021, 4.087307), (1.624855, 4.834076, 4.033834)],
    [(2.024855, 4.834076, 4.033834), (2.024855, 4.854021, 4.087307), (1.624855, 4.854021, 4.087307)],
    [(2.024855, 4.854021, 4.087307), (1.624855, 4.866152, 4.143074), (1.624855, 4.854021, 4.087307)],
    [(2.024855, 4.854021, 4.087307), (2.024855, 4.866152, 4.143074), (1.624855, 4.866152, 4.143074)],
    [(2.024855, 4.866152, 4.143074), (1.624855, 4.870224, 4.2), (1.624855, 4.866152, 4.143074)],
    [(2.024855, 4.866152, 4.143074), (2.024855, 4.870224, 4.2), (1.624855, 4.870224, 4.2)],
    [(2.024855, 4.870224, 4.2), (1.624855, 5.270224, 4.2), (1.624855, 4.870224, 4.2)],
    [(2.024855, 4.870224, 4.2), (2.024855, 5.270224, 4.2), (1.624855, 5.270224, 4.2)],
    [(2.024855, 5.270224, 4.2), (1.624855, 5.262081, 4.086148), (1.624855, 5.270224, 4.2)],
    [(2.024855, 5.270224, 4.2), (2.024855, 5.262081, 4.086148), (1.624855, 5.262081, 4.086148)],
    [(2.024855, 5.262081, 4.086148), (1.624855, 5.237818, 3.974614), (1.624855, 5.262081, 4.086148)],
    [(2.024855, 5.262081, 4.086148), (2.024855, 5.237818, 3.974614), (1.624855, 5.237818, 3.974614)],
    [(2.024855, 5.237818, 3.974614), (1.624855, 5.197929, 3.867668), (1.624855, 5.237818, 3.974614)],
    [(2.024855, 5.237818, 3.974614), (2.024855, 5.197929, 3.867668), (1.624855, 5.197929, 3.867668)],
    [(2.024855, 5.197929, 3.867668), (1.624855, 5.143226, 3.767487), (1.624855, 5.197929, 3.867668)],
    [(2.024855, 5.197929, 3.867668), (2.024855, 5.143226, 3.767487), (1.624855, 5.143226, 3.767487)],
    [(2.024855, 5.143226, 3.767487), (1.624855, 5.074823, 3.676111), (1.624855, 5.143226, 3.767487)],
    [(2.024855, 5.143226, 3.767487), (2.024855, 5.074823, 3.676111), (1.624855, 5.074823, 3.676111)],
    [(2.024855, 5.074823, 3.676111), (1.624855, 4.994112, 3.5954), (1.624855, 5.074823, 3.676111)],
    [(2.024855, 5.074823, 3.676111), (2.024855, 4.994112, 3.5954), (1.624855, 4.994112, 3.5954)],
    [(2.024855, 4.994112, 3.5954), (1.624855, 4.902736, 3.526997), (1.624855, 4.994112, 3.5954)],
    [(2.024855, 4.994112, 3.5954), (2.024855, 4.902736, 3.526997), (1.624855, 4.902736, 3.526997)],
    [(2.024855, 4.902736, 3.526997), (1.624855, 4.802556, 3.472294), (1.624855, 4.902736, 3.526997)],
    [(2.024855, 4.902736, 3.526997), (2.024855, 4.802556, 3.472294), (1.624855, 4.802556, 3.472294)],
    [(2.024855, 4.802556, 3.472294), (1.624855, 4.69561, 3.432406), (1.624855, 4.802556, 3.472294)],
    [(2.024855, 4.802556, 3.472294), (2.024855, 4.69561, 3.432406), (1.624855, 4.69561, 3.432406)],
    [(2.024855, 4.69561, 3.432406), (1.624855, 4.584075, 3.408143), (1.624855, 4.69561, 3.432406)],
    [(2.024855, 4.69561, 3.432406), (2.024855, 4.584075, 3.408143), (1.624855, 4.584075, 3.408143)],
    [(2.024855, 4.584075, 3.408143), (1.624855, 4.470224, 3.4), (1.624855, 4.584075, 3.408143)],
    [(2.024855, 4.584075, 3.408143), (2.024855, 4.470224, 3.4), (1.624855, 4.470224, 3.4)],
]

# mesh = Mesh.from_polygons(triangles)
mesh = Mesh.from_vertices_and_faces(vertices, faces)

for face in list(mesh.faces()):
    if mesh.face_area(face) == 0:
        mesh.delete_face(face)

mesh.remove_duplicate_vertices()
mesh.remove_unused_vertices()

print(mesh.number_of_vertices())
print(mesh.number_of_edges())
print(mesh.number_of_faces())
print(mesh.euler())
print(mesh.is_manifold())
print(mesh.is_connected())
print(mesh.is_valid())
print(mesh.is_trimesh())

viewer = Viewer()
viewer.scene.add(mesh)
viewer.show()

[tomvanmele]

the problem is not with the removal of duplicates. it is just that there are two invalid faces. removing the faces with zero area results in a valid mesh...

[tomvanmele]

from_triangles => number of faces = 92
from_vertices_and_faces => number of faces = 94
from_vertices_and_faces + remove zero area faces => number of faces = 92