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Nicolaus93 avatar Nicolaus93 commented on July 3, 2024

For anybody facing the same issue. A possible workaround could be to instantiate the rtree outside of trimesh and then store it into the mesh cache

def set_mesh_rtree(mesh: trimesh.Trimesh, tree_path: str) -> None:
    if pathlib.Path(tree_path).exists():
        raise FileExistsError(f"RTree already exists at specified location {tree_path}")
    min_bounds = mesh.triangles.min(axis=1)
    max_bounds = mesh.triangles.max(axis=1)
    bounds = np.column_stack((min_bounds, max_bounds))
    tree = rtree.index.Index(
        tree_path,
        zip(np.arange(len(mesh.faces)), bounds, [None] * len(mesh.faces)),
        properties=rtree.index.Property(dimension=3),
    )
    mesh._cache.cache["triangles_tree"] = tree

from trimesh.

Nicolaus93 avatar Nicolaus93 commented on July 3, 2024

In the end it was a permission error, similar to Toblerity/rtree#185
The problem with the current version of rtree is that it doesn't write to the /tmp directory but to the current working directory. Hopefully this will be fixed in the next release of rtree - see libspatialindex/libspatialindex#220 (which is included in the latest release of libspatialindex).

from trimesh.

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