AS30基础-运动的螺旋.docVIP

AS3.0 基础-运动的螺旋从内至外var speed:Number 0.3;var radius:Number 0;var angle:Number 0;var xpos:Number;var ypos:Number;var centerX:Number stage.stageWidth / 2;var centerY:Number stage.stageHeight / 2;//生成容器var container:Sprite new Sprite ;//把容器加入舞台的中心container.x centerX;container.y centerY;addChild container ;//设定线条样式 4个像素、白色container.graphics.lineStyle 4, 0xffffff ;//起始点在舞台的中心container.graphics.moveTo 0, 0 ;//注册进入帧事件侦听器 addEventListener Event.ENTER_FRAME, onEnterFrame ;//事件响应函数function onEnterFrame event:Event :void /* Well stop the drawing after the radius is over 100 pixels. We still continue to rotate the container. */ if radius 100 speed 0; container.rotation + 10; else //Increase the radius in each frame radius + 0.5; //New x and y coordinates xpos Math.cos angle * radius; ypos Math.sin angle * radius; //Draw to the new coorninates container.graphics.lineTo xpos,ypos ; //Rotate the container container.rotation + 10; //The greater the speed, the faster we draw circles angle + speed; 从外至内var speed:Number 0.3;var radius:Number 100;var angle:Number 0;var xpos:Number;var ypos:Number;var centerX:Number stage.stageWidth / 2;var centerY:Number stage.stageHeight / 2;//We are going to add all our graphics onto a containervar container:Sprite new Sprite ;//Add the container to the center of the stagecontainer.x centerX;container.y centerY;addChild container ;//Set the containers graphics line style to be 4 pixels and whitecontainer.graphics.lineStyle 4, 0xffffff ;//Starting pointcontainer.graphics.moveTo 100, 0 ;addEventListener Event.ENTER_FRAME, onEnterFrame ;function onEnterFrame event:Event :void /* Well stop the drawing after the radius is under 0 We still continue to rotate the container. */ if radius 0 speed 0; container.rotation + 10; else //Decrease the radius in each frame radius - 0.5; //New x and y coordinates xpos Math.cos angle * radiu