教你用FLASH制作漂亮的图形旋转动画效果

本教程是向大家介绍利用FLASH制作漂亮的图形旋转动画效果，采用代码实现特效，对于编程人员非常适合学习，转发过来，希望大家喜欢！

效果：

代码如下：

var pMaxSize:Number = 150; 
var pCenterX:Number = 275; 
var pCenterY:Number = 200; 
var pNumTraces:Number = 20; 
var pNumLayers:Number = 30; 
var pCurrentLayer:Number = 0; 
var pLineColour:Number; 
var pPointDegree:Array = new Array(); 
var pPointDegreeChange:Array = new Array(); 
var pPointScale:Array = new Array(); 
var pPointScaleChange:Array = new Array(); 
var pPointX:Array = new Array(); 
var pPointY:Array = new Array(); 
var pBaseTimeline:MovieClip; 
var pIntervalId:Number; 
function init(baseTimeline:MovieClip):Void { 
pBaseTimeline = baseTimeline; 
pBaseTimeline.createEmptyMovieClip("holder", 0); 
for (var j:Number = 0; j<pNumLayers; j++) { 
  pBaseTimeline.createEmptyMovieClip("layer"+j, j+1); 
  pBaseTimeline["layer"+j]._x = pCenterX; 
  pBaseTimeline["layer"+j]._y = pCenterY; 
} 
initTraces(); 
pBaseTimeline.holder.onEnterFrame = function() { 
  moveSpheres(); 
}; 
pIntervalId = setInterval(this, "updateSeeds", 2000); 
} 
function initTraces() { 
for (var i:Number = 0; i<pNumTraces; i++) { 
  pPointX = 0; 
  pPointY = 0; 
  pPointDegree = (6.28318530718/pNumTraces)*i; 
  pPointScale = 50; 
} 
updateSeeds(); 
for (i=0; i<pNumTraces; i++) { 
  plotLine(i); 
} 
} 
function moveSpheres() { 
for (var i:Number = 0; i<pNumTraces; i++) { 
  pPointDegree += pPointDegreeChange; 
  pPointScale += pPointScaleChange; 
  plotLine(i, true); 
} 
pBaseTimeline["layer"+pCurrentLayer]._alpha = 100; 
pCurrentLayer = (pCurrentLayer+1)%pNumLayers; 
for (var j:Number = 0; j<pNumLayers; j++) { 
  pBaseTimeline["layer"+((pCurrentLayer+j)%pNumLayers)]._alpha = (j/pNumLayers)*100; 
} 
pBaseTimeline["layer"+pCurrentLayer].clear(); 
} 
function plotLine(i:Number, drawLine:Boolean) { 
pBaseTimeline["layer"+pCurrentLayer].lineStyle(1, pLineColour, 100); 
pBaseTimeline["layer"+pCurrentLayer].moveTo(pPointX, pPointY); 
pPointX = (Math.cos(pPointDegree)*pPointScale); 
pPointY = (Math.sin(pPointDegree)*pPointScale); 
if (drawLine == true) { 
  pBaseTimeline["layer"+pCurrentLayer].lineTo(pPointX, pPointY); 
} 
} 
function updateSeeds() { 
var deg:Number; 
var scale:Number; 
deg = randomRange(-100, 100)/2000; 
if (pPointScale[0]>pMaxSize) { 
  scale = randomRange(-10, 0)/2; 
} else if (pPointScale[0]<-pMaxSize) { 
  scale = randomRange(0, 10)/2; 
} else { 
  scale = randomRange(-10, 10)/2; 
} 
for (var i:Number = 0; i<pNumTraces; i++) { 
  pPointDegreeChange = deg; 
  pPointScaleChange = scale; 
} 
pLineColour = randomRange(0, 0xFFFFFF); 
} 
function randomRange(min:Number, max:Number):Number { 
var randomNum:Number = Math.round(Math.random()*(max-min))+min; 
return randomNum; 
} 
init(this);

教程结束，以上就是FLASH制作漂亮的图形旋转动画效果，希望大家喜欢本教程！