PointTracker.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

[RequireComponent(typeof(MeshFilter))]
public class PointTracker : MonoBehaviour
{
    private MeshFilter  meshFilter;
    private Transform[] markers;
    
    void Start()
    {
        meshFilter = gameObject.GetComponent<MeshFilter>();
        markers = new Transform[meshFilter.mesh.vertexCount];

        Debug.Log(string.Format(
            "Tracking {0} vertices in \"{1}\"",
            meshFilter.mesh.vertexCount,
            transform.name));

        for (int i = 0; i < meshFilter.mesh.vertexCount; i++)
        {
            markers[i] = ObjectPool.Instance.GetObject().transform;
            markers[i].name = string.Format("{0} marker{1}", transform.name, i);
        }
    }

    void Update()
    {
        // make a locally scoped copy of mesh vertices -- if we directly access
        // vertices using meshFilter.mesh.vertices[i] inside of the for() loop
        // we create a tremendous amount of GC cleanup (~113MB...)
        Vector3[] vertices = meshFilter.mesh.vertices;

        for (int i = 0; i < meshFilter.mesh.vertexCount; i++)
            markers[i].position = TransformVertex(vertices[i], transform);
    }

    private Vector3 TransformVertex(Vector3 vertex, Transform parent)
    {
        return parent.localToWorldMatrix.MultiplyPoint3x4(vertex);
    }
}