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

public class NewBehaviourScript : MonoBehaviour {
    public GameObject obj1;
    public GameObject obj2;
    // Use this for initialization
    void Start () {
		
	}
	
	// Update is called once per frame
	void Update ()
    {
        drawCylinder(obj1.transform.position,obj2.transform.position);

    }
    private Dictionary<int, Mesh> _meshMap = new Dictionary<int, Mesh>();
    private void drawCylinder(Vector3 a, Vector3 b)
    {
        float length = (a - b).magnitude;

        Graphics.DrawMesh(getCylinderMesh(length),
            Matrix4x4.TRS(a, Quaternion.LookRotation(b - a), Vector3.one),obj1.GetComponent<MeshRenderer>().material
            ,
            gameObject.layer);
    }//通过obj1.GetComponent<MeshRenderer>().material改圆柱材质
    private Mesh getCylinderMesh(float length)
    {
        int lengthKey = Mathf.RoundToI