Handles.DrawPolyLine 绘制多段线

// Draw lines to the connected game objects that a script has.
// if the target object doesnt have any game objects attached
// then it draws a line from the Last checked object to 0,0,0
//绘制线用来连接带有脚本的物体
//如果目标物体没有任何物体被附加，然它绘制一条线从物体到0,0,0
@CustomEditor (ConnectedPolyLine)
class ConnectedPolyLineHandle extends Editor {

	var positions : Vector3[];

	function OnSceneGUI () {
		if(target.polyLineObjs.Length > 0)
		positions = new Vector3[target.polyLinesObjs.Length];
		for(var i = 0; i < target.polyLineObjs.Length; i++)
			if(target.polyLineObjs[i])
				positions[i] = target.polyLineObjs[i].transform.position;
			else
				positions[i] = Vector3.zero;
			Handles.DrawPolyLine(positions);
	}
}

//ConnectedPolyLine.js

var polyLineObjs : GameObject[];