#pragma strict
var myColor:Color;
var firstPosition:Vector3;//鼠标点击的第一个点
var secondPosition:Vector3;//鼠标放开的位置
var middlePosition:Vector3;
var isClick:boolean=false;
private var lineRenderer:LineRenderer;function Start () {lineRenderer=gameObject.AddComponent(LineRenderer);lineRenderer.material.color=myColor;lineRenderer.SetWidth(0.1,0.1);//设置宽度 起点宽度和终点宽度 function SetWidth (start : float, end : float) : void
}function Update () {var isMouseDown=Input.GetMouseButton(0);//获取按钮if(isMouseDown&&!isClick){firstPosition=Camera.main.ScreenToWorldPoint(new Vector3(Input.mousePosition.x,Input.mousePosition.y,1));lineRenderer.SetVertexCount(1);//设置线段数 lineRenderer.enabled=true;lineRenderer.SetPosition(0,firstPosition);isClick=true;}if(isMouseDown){secondPosition=Camera.main.ScreenToWorldPoint(new Vector3(Input.mousePosition.x,Input.mousePosition.y,1));lineRenderer.SetVertexCount(2);lineRenderer.SetPosition(1,secondPosition);}if(Input.GetMouseButtonUp(0)){isClick=false; secondPosition=Camera.main.ScreenToWorldPoint(new Vector3(Input.mousePosition.x,Input.mousePosition.y,1));lineRenderer.SetVertexCount(2);lineRenderer.SetPosition(1,secondPosition);}
}

#pragma strict
//var myColor:Color;
var firstPosition:Vector3;//鼠标点击的第一个点
var secondPosition:Vector3;//鼠标放开的位置
var middlePosition:Vector3;
var isClick:boolean=false;var myRay:GameObject;
private var rayGameObject:GameObject;//private var lineRenderer:LineRenderer;//function Start () {//    lineRenderer=gameObject.AddComponent(LineRenderer);
//    lineRenderer.material.color=myColor;
//    lineRenderer.SetWidth(0.1,0.1);//设置宽度 起点宽度和终点宽度 function SetWidth (start : float, end : float) : void
//}function Update () {var isMouseDown=Input.GetMouseButton(0);//获取按钮if(isMouseDown&&!isClick){firstPosition=Camera.main.ScreenToWorldPoint(new Vector3(Input.mousePosition.x,Input.mousePosition.y,1));//lineRenderer.SetVertexCount(1);//设置线段数 //lineRenderer.enabled=true;//lineRenderer.SetPosition(0,firstPosition);isClick=true;}if(isMouseDown){secondPosition=Camera.main.ScreenToWorldPoint(new Vector3(Input.mousePosition.x,Input.mousePosition.y,1));//lineRenderer.SetVertexCount(2);//lineRenderer.SetPosition(1,secondPosition);
    }if(Input.GetMouseButtonUp(0)){isClick=false; secondPosition=Camera.main.ScreenToWorldPoint(new Vector3(Input.mousePosition.x,Input.mousePosition.y,1));//lineRenderer.SetVertexCount(2);//lineRenderer.SetPosition(1,secondPosition);
        middlePosition=(firstPosition+secondPosition)/2.0;var angle:float=Mathf.Atan((secondPosition.y-firstPosition.y)/(secondPosition.x-firstPosition.x));rayGameObject=Instantiate(myRay,middlePosition,Quaternion.AngleAxis(angle*100/3.14,Vector3.forward));Destroy(rayGameObject,1.0);}}