Flash8简单制作飞速旋转效果

　　speed = 0;
　　// Acceleration speed.
　　accel = .1;
　　// Every frame execute the following code.
　　this.onEnterFrame = function(){
　　// Increment speed by the acceleration.
　　speed = Math.round((speed + accel)*100)/100;
　　// Rotate the shape by the current spin speed.
　　_rotation += speed;
　　}