AttributeError: 'Scene' object has no attribute 'area'

File "C:\ProgramData\Anaconda3\lib\site-packages\trimesh\sample.py", line 152, in sample_surface_even
    radius = np.sqrt(mesh.area / (2 * count))
AttributeError: 'Scene' object has no attribute 'area'.

It occurs when calling sample_surface_even function. Already the lastest version. However, this bug doesn’t occur when running on Ubuntu 18.04.2.

[mikedh]

Some formats are describing “scenes” (i.e. multiple meshes with transforms), if you want it to always be a “baked” Trimesh object in newer versions I would recommend using the force kwarg when loading:

mesh = trimesh.load('stuff.obj', force='mesh')

[jackd]

How did you generate your mesh? If you loaded it from an obj, the returned object is now either a mesh or scene. I’m unsure why this would be different under different versions of ubuntu, but if you’re creating the obj via some other means it may be being created differently.

If you’re only interested in the area, try the following:

def as_mesh(scene_or_mesh):
    if isinstance(scene_or_mesh, trimesh.Scene):
        mesh = trimesh.util.concatenate([
            trimesh.Trimesh(vertices=m.vertices, faces=m.faces)
            for m in scene_or_mesh.geometry.values()])
    else:
        mesh = scene_or_mesh
    return mesh

radius = np.sqrt(as_mesh(mesh).area / (2 * count))