Pull mesh vertices onto nearby shapes.

Input parameters:

1. Ms → Mesh to modify.
2. Sh → List of pulling shapes.
3. Ff → Distance threshold for the pulling operation as a number, or a falloff function based on distance.
4. Vf → Types of vertices to be included.
   • 0 → All
   • 1 → Creases
   • 2 → Naked

Output parameters:

1. Ms → Mesh with pulled vertices.
2. Ix → Pulled vertex indices.