[AS3]得到帧率

使用方法：

package {
 import flash.display.Sprite;
 import advancedflex.core.FPSView;
 public class TestFPS extends Sprite {
  //把FPSView 添加到enterFrame事件里，这样才能查看帧率。
  addEventListener("enterFrame", FPSView.instance.enterFrameHandler);
  //得到帧率，这个属性可以被绑定。
  trace(FPSView.instance.fps);
 }
}

源码：

/////////////////////////////////////////////////////////////////////////////
//Copyright 2007 Advanced Flex Project http://code.google.com/p/advancedflex/. 
//
//  Licensed under the Apache License, Version 2.0 (the "License");
//  you may not use this file except in compliance with the License.
//  You may obtain a copy of the License at
//
//    http://www.apache.org/licenses/LICENSE-2.0
//
//  Unless required by applicable law or agreed to in writing, software
//  distributed under the License is distributed on an "AS IS" BASIS,
//  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
//  See the License for the specific language governing permissions and
//  limitations under the License.
/////////////////////////////////////////////////////////////////////////////
package advancedflex.core {
 
 import flash.events.Event;
 import flash.utils.getTimer;
 
 /**
  * 查看帧率。
  */
 public class FPSView {
  //instance
  private static const $INSTANCE:FPSView = new FPSView();
  
  /**
   * 得到实例。
   * 
   * @return instance 实例。
   */
  public static function get instance():FPSView {
   return $INSTANCE;
  }
  
  //first time
  private var ft:int;
  把
  //second time
  private var st:int;
  
  [Bindable]
  /**
   * 帧率。
   */
  public var fps:int;
  
  /**
   * EnterFrame Event Handler.你必须把它添加到DisplayObject才能查看帧率。
   */
  public function enterFrameHandler(event:Event):void {
   st = getTimer();
   fps = Math.round(1000 / (st - ft));
   ft = st;
  }
 }
}

本文链接:https://assnippets.blogspot.com/2008/01/as3_11.html转载请注明出处。

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