title: How to export 3d delaunay triangle mesh with python?
body: <p>I want to use scipy.spatial.delaunay get the triangle mesh from the 3d point cloud. And i use trimesh to save the triangle mesh as .ply form. But the result seems bad. All points play roles as vertices, so it works slowly and bad... how can i get a better mesh output with this delaunay method?</p>
  <p>Code:</p>
  <pre><code>#pcd is 3d point cloud 
  tri = Delaunay(pcd)   
  #faces
  f = tri.simplices
  # Mesh
  mesh = trimesh.Trimesh(vertices=pos_combine, faces=f)
  # show mesh and export it
  mesh.show()
  mesh.export(file_obj=&quot;mesh.ply&quot;)
  </code></pre>