potpourri3d laplacian and mass matrix not same as torch3d

[BarakeelFanseuKamhoua]

❓ why are potpourri3d cotlaplacian and mass matrix not same as torch3d

torch3d

  L, _areas = p3d.ops.cot_laplacian(verts, faces, eps=1e-8)
  _areas = torch.diag(_areas.squeeze())

potpurri

  verts_np, faces_np = verts.detach().cpu().numpy(), faces.detach().cpu().numpy()
  L = pp3d.cotan_laplacian(verts_np, faces_np, denom_eps=1e-10)
  _areas = pp3d.vertex_areas(verts_np, faces_np)
  _areas += 1e-8 * np.mean(_areas)
  L = torch.from_numpy(L.toarray()).to(self.device).float()
  _areas = torch.from_numpy(_areas).to(self.device).float() 
  _areas = torch.diag(_areas.squeeze())