3d - 合并两个 3D 网格

Question

我想知道将两个网格（使用修剪网格构建）并将它们合并在一起的最佳方法是什么。这个想法是识别每个网格上的一个面，并使用这两个面将两者连接起来。

Answer 1

Two main approaches:

1. Use a boolean mesh operation: trimesh docu . But you must have openSCAD or Blender installed for that.

2. Merge the vertices with "brute force": (Have the list of trimesh meshes to merge in "yourList")

    vertice_list = [mesh.vertices for mesh in yourList]
    faces_list = [mesh.faces for mesh in yourList]
    faces_offset = np.cumsum([v.shape[0] for v in vertice_list])
    faces_offset = np.insert(faces_offset, 0, 0)[:-1]
   
    vertices = np.vstack(vertice_list)
    faces = np.vstack([face + offset for face, offset in zip(faces_list, faces_offset)])
   
    merged__meshes = trimesh.Trimesh(vertices, faces)