Flash AS实例教程：用纯AS制作火焰特效-Flash教程

首先申明不是偶原创，偶只是把效果综合了一下。粒子变幻效果忘记是谁的了，知道出处的朋友请提醒，偶在以后补上。火焰瑞流效果是来自一位朋友的博客里面的摄像头火焰特效，也无处可考证出处，请知道的朋友提醒，偶以后补上。还有个返回无重复随机数组的函数在里面，是坛子里的朋友的，知道出处的朋友也请告知，呵呵呵...

以下是要害原码和原始文件，感爱好的朋友可以看看：Fire_ok.as：

/*
没啥好说的，拿去用吧：）
*/
class Fire_ok extends MovieClip
{
var fireBmp, prevBmp, tempBmp, greyBmp, mtx, pnt, blurF, greyscaleCMF, fireCMF, dispMapF, webcam, fireBmpHolder, createEmptyMovieClip;
var activityLevel_pb, wcGet ;
function Fire_ok ()
{
super ();
fireBmp = new flash.display.BitmapData (400, 400, false, 0);
prevBmp = fireBmp.clone ();
tempBmp = fireBmp.clone ();
greyBmp = new flash.display.BitmapData (400, 400, false, 16743424);
mtx = new flash.geom.Matrix ();
pnt = new flash.geom.Point ();
blurF = new flash.filters.BlurFilter (7, 7, 1);
greyscaleCMF = new flash.filters.ColorMatrixFilter ([0.73, 0.83, 0.93, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0]);
fireCMF = new flash.filters.ColorMatrixFilter ([0.8, 0.05, 0, 0, 0, 0, 0.65, 0, 0, 0, 0, 0, 0.5, 0, 0, 0, 0, 1, 0]);
dispMapF = new flash.filters.DisplacementMapFilter (tempBmp, pnt, 1, 2, 10, - 35, \"clamp\");
/////////////////////////////////////////////////////
}
function configUI ()
{
fireBmpHolder = this.createEmptyMovieClip (\"fireBmpHolder\", 1);
fireBmpHolder.attachBitmap (fireBmp, 1, \"always\", false);
fireBmpHolder.blendMode = \"add\";
}
function onEnterFrame ()
{
tempBmp.copyPixels (prevBmp, prevBmp.rectangle, pnt);
prevBmp.draw (webcam);
if (tempBmp.getPixel (1, 1) < 2)
{
return (undefined);
}
tempBmp.draw (prevBmp, mtx, null, \"difference\");

tempBmp.applyFilter (tempBmp, tempBmp.rectangle, pnt, greyscaleCMF);
tempBmp.threshold (tempBmp, tempBmp.rectangle, pnt, \">\", 1638400, 4289379174, 16711680, false);
tempBmp.applyFilter (tempBmp, tempBmp.rectangle, pnt, blurF);
fireBmp.draw (tempBmp, mtx, null, \"add\");

tempBmp.perlinNoise (13, 10, 1, random (100) , false, true, 3, false);
tempBmp.draw (greyBmp, mtx, null, \"darken\");

fireBmp.applyFilter (fireBmp, fireBmp.rectangle, pnt, dispMapF);
fireBmp.applyFilter (fireBmp, fireBmp.rectangle, pnt, fireCMF);
}
static var CLASS_REF = Fire_ok;
static var LINKAGE_ID = \"Fire_ok\";
}

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