今天有点时间，才记起来上一次写的画线框，接着上一节画线，我们这节来看一下GL画线

直接上代码

using UnityEngine;using System.Collections;using System.Collections.Generic;public class joint{      public Vector3 org;      public Vector3 end;  }  public class example : MonoBehaviour {    Event e;        private Vector3 orgPos;        private Vector3 endPos;        private bool canDrawLines  = false;        ArrayList posAL;      ArrayList temppos;      public Material lineMaterial;      public List 
     
       Pos = new List
      
        ();    void Start()      {          temppos=new ArrayList();          posAL=new  ArrayList();      }      void Update()      {          if(Input.GetMouseButtonUp(0))          {              canDrawLines = true;            }          if(e.type!=null &canDrawLines)         {                if(e.type == EventType.MouseDown)                {                                    orgPos=Input.mousePosition;                              }                            if(e.type==EventType.MouseUp)                {                                                      endPos=Input.mousePosition;                 Pos.Add (endPos);                for (int i = 0; i < Pos.Count-1; i++) {                    Vector3 p = Pos [i];                }                GLDrawLine (orgPos, endPos);                orgPos = endPos;            }            }        }      void GLDrawLine(Vector3 beg ,Vector3 end )        {                  if(!canDrawLines)                return;            GL.PushMatrix ();          GL.LoadOrtho ();            beg.x=beg.x/Screen.width;            end.x=end.x/Screen.width;            beg.y=beg.y/Screen.height;            end.y=end.y/Screen.height;            joint tmpJoint = new joint();            tmpJoint.org=beg;            tmpJoint.end=end;            posAL.Add(tmpJoint);            lineMaterial.SetPass( 0 );            GL.Begin( GL.LINES );          GL.Color( new Color(1,1,1,1f) );         for(int i= 1;i
       
        < Pos.Count; i++) {            Debug.Log (Pos [i]);        }    }        这就是GL画线，但是有一个问题是GL画线不能改变线的宽细，它是默认的，要想让他变宽，可以考虑每两点之间画双线，两天线之间用图片填充。    希望大家能用的到