Bitmap打造被风吹散flash特效

[来源： | 作者： | 时间：2009-05-13 | 点击： | 收藏本文【大中小】]

5uflash文章摘要：Bitmap特效，被风吹散效果。详细代码： package { import flash.display.Bitmap; import flash.display.BitmapData; import flash.display.MovieClip; import flash.display.Sprite;

Bitmap特效，被风吹散效果。

详细代码：

package
{
import flash.display.Bitmap;
import flash.display.BitmapData;
import flash.display.MovieClip;
import flash.display.Sprite;
import flash.events.Event;
import flash.filters.BlurFilter;
import flash.geom.Point;
import flash.geom.Rectangle;
/**
* ...
* @author flashk
*/
public class Min extends Sprite
{
public var a_mc:MovieClip;
private var bd:BitmapData;
private var bds:BitmapData;
private var ps:Array;
public function Min() {
bd = new BitmapData(1420, 300, true);
bds = new BitmapData(a_mc.width, a_mc.height, true);
bds.draw(a_mc);
var bp:Bitmap = new Bitmap();
bp.bitmapData = bd;
this.addChild(bp);
start();
}
private function start():void {
ps = new Array();
for (var i:int = 1; i <= bds.width; i++) {
for (var j:int = 1; j <= bds.height; j++) {
ps.push(new Po(i, j, bds.getPixel32(i, j),bds.width));
}
}
this.addEventListener(Event.ENTER_FRAME, render);
this.removeChild(a_mc);
}
private function render(event:Event):void {
var po;
//bd.fillRect(new Rectangle(0, 0, bd.width, bd.height), 0);
bd.applyFilter(bd, new Rectangle(0, 0, bd.width, bd.height), new Point(0, 0), new BlurFilter(2, 2, 1));
bd.lock();
var len = ps.length;
for (var i:int = 0 ; i < len; i+=1) {
po = ps[i];
po.move();
bd.setPixel32(po.x, po.y+80, po.color);
}
bd.unlock();
}
}
}
class Po {
public var x:Number;
public var y:Number;
public var color:uint;
private var speed:Number;
private var r:Number = 0;
private var by:Number;
public function Po(x:Number, y:Number, color:uint,w:Number) {
this.x = x;
this.y = y;
this.color = color;
this.speed = Math.random() * 10 - (w - x) / 2;
//r = Math.random() * 50;
this.by = y;
}
public function move():void {
speed += 0.5;
if(speed>0){
this.x += speed;
r += 10;
this.y = this.by + Math.sin(r* Math.PI/180)*50;
}
}
}

源文件和swf下载s2demo.rar：

再来玩个加鼠标控制的，美女被风吹散...

package
{
import flash.display.Bitmap;
import flash.display.BitmapData;
import flash.display.MovieClip;
import flash.display.Sprite;
import flash.events.Event;
import flash.filters.BlurFilter;
import flash.filters.ColorMatrixFilter;
import flash.geom.ColorTransform;
import flash.geom.Point;
import flash.geom.Rectangle;
/**
* ...
* @author flashk
*/
public class Min extends Sprite
{
public var a_mc:MovieClip;
private var bd:BitmapData;
private var bds:BitmapData;
private var ps:Array;
private var ns:uint;
private var checks:Array;
private var noise:BitmapData;
private var randomSeed:Number;
private var image:BitmapData;
private var rect:Rectangle;
private var cTra:ColorTransform;
private var vectorList:Array;
private var num:uint = 10000;
public function Min() {
noise = new BitmapData(a_mc.width, a_mc.height, false, 0x000000);
randomSeed = Math.floor(Math.random() * 0xFFFF);
noise.perlinNoise(a_mc.width, a_mc.height, 4, randomSeed, false, false, 1 | 2 | 0 | 0 );
image = new BitmapData(465, 465, true, 0);
this.addChild(new Bitmap(image));
rect = new Rectangle( 0, 0, 465, 465 )
cTra = new ColorTransform(1, 1, 1, 0.9, 0, 0, 0, 0)
bd = new BitmapData(600, 450, true);
bds = new BitmapData(a_mc.width, a_mc.height, true,0x00FFFFFF);
bds.draw(a_mc);
var bp:Bitmap = new Bitmap();
bp.bitmapData = bd;
ps = new Array();
start(1);
this.removeChild(a_mc);
}
private function start(s:uint):void {
ns = s;
vectorList = [];
for (var i:int = s; i <= bds.width; i++) {
for (var j:int = 1; j <= bds.height; j++) {
vectorList.push(new Po(i, j, bds.getPixel32(i, j),bds.width,this));
}
}
this.addEventListener(Event.ENTER_FRAME, render);
}
private function render(event:Event):void {
image.colorTransform( rect, cTra );
image.lock();
var len:uint = vectorList.length;
for (var i:uint = 0; i < len; i++) {
var body:Po = vectorList[i];
body.speed += 0.4;
if(body.speed>0){
var col:Number = noise.getPixel(body.px, body.py);
body.ax += ((col >> 16 & 0xFF) - 128)/1000;
body.ay += ((col >> 8 & 0xFF) -128)/1000;
body.vx += body.ax;
body.vy += body.ay;
body.px += body.vx;
body.py += body.vy;
body.ax *= .975;
body.ay *= .975;
body.vx *= .92;
body.vy *= .92;
}
if (body.px < 0) {
vectorList.splice(i, 1);
len -= 1;
}
image.setPixel32( body.px, body.py+100, body.color );
}
image.unlock();
}
}
}
class Po {
public var x:Number;
public var y:Number;
public var color:uint;
public var speed:Number;
private var r:Number = 0;
private var by:Number;
public var vx:Number = 0;
public var vy:Number = 0;
public var ax:Number = 0;
public var ay:Number = 0;
public var px:Number;
public var py:Number;
public function Po(x:Number, y:Number, color:uint,w:Number,eventLis:Object) {
this.x = x;
this.y = y;
this.px = x;
this.py = y;
this.color = color;
this.speed = Math.random() * 15 - (w - x) / 3 -20;
this.by = y;
}
}

鼠标控制swf效果：s2wind-mouseControl.rar

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