how to make vertex ids the same over multiple meshes

Hi,

is there a way to make sure that the vertex ids of multiple meshes are the same. I use trimesh to load multiple person into a tool, e.g.

After having marked every mesh with a new point (the black dot) I try to brute force find the closest point given the set of meshes and vertices.

So far I am trying following:

        joints = np.concatenate(scenes['joints'])
        search_candidate = True
        i = 3
        while search_candidate:
            vert_ids = []
            for mesh in scenes['meshes']:
                distances, ids = mesh.kdtree.query(joints, i)
                vert_ids.append(ids)

            vert_ids = np.concatenate(vert_ids)
            vert_id = self.search_common_vertex_id(vert_ids)
            if vert_id is not None:
                search_candidate = False

            i += 1

        for scene in self.scene_chache.values():
            mesh = scene.geometry['geometry_0']
            mesh.visual.vertex_colors[vert_id] = [0, 255, 255, 255]

But the resulting vertex id at the end sometimes marks the ear or the other knee. Is there a way to come around this?

Edit: Currently I’m storing multiple scenes per mesh and point in a dictionary. So I think the more precise question would be how can I make sure the different scene objects are in the same coordinate system?

[mikedh]

Oh you may just need to disable vertex merging with process=False passed to either the loader or constructor: trimesh.Trimesh(**kwargs, process=False)

[russoale]

Awesome, that did the fix! Thank you @mikedh