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[as]超真实火焰效果

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主文件代码

代码拷贝框
import <a href="/list/flash/index.html" title="flash" target="_blank"><acronym>flash</acronym></a>.display.*;import <a href="/list/flash/index.html" title="flash" target="_blank"><acronym>flash</acronym></a>.filters.*;import <a href="/list/flash/index.html" title="flash" target="_blank"><acronym>flash</acronym></a>.geom.*;import de.popforge.bitmap.shape;shape.setcontainer( this.createemptymovieclip( 'shapes', 10000 ) );//-- get blue circle as a bitmapvar bluespotclip: movieclip = attachmovie( "bluespot", "bluespotclip", 0 );var clipbounds: object = bluespotclip.getbounds();var bluespot: bitmapdata = new bitmapdata( clipbounds.xmax, clipbounds.ymax, true, 0 );bluespot.draw( bluespotclip, new matrix() );bluespotclip.removemovieclip();//-- involved bitmapsvar source: bitmapdata = new bitmapdata( 256, 256, false, 0 );var output: bitmapdata = new bitmapdata( 256, 256, false, 0 );var buffer: bitmapdata = new bitmapdata( 256, 256, false, 0 );var bounds: rectangle = new rectangle( 0, 0, 256, 256 );var origin: point = new point();var matrix: matrix = new matrix();//-- creating a gradient with fire colorsimport de.popforge.bitmap.gradient;var firepalette: array = gradient.fillarray( [ 0, 0xa20000, 0xfff122, 0xffffff, 0xf8ff1b, 0xc53c05, 0 ], [ 0, 50, 50, 100, 75, 25, 0 ], [ 0, 64, 132, 186, 220, 250, 255 ]);//-- filter to let the flame growvar flame: convolutionfilter = new convolutionfilter( 3, 3, null, 2.7, -2 );attachbitmap( output, 0, false, false );var ms: number = gettimer();var frame: number = 0;onmousemove = function(){ //-- create burning area var mouse: point = new point( _xmouse - clipbounds.xmax/2, _ymouse - clipbounds.ymax/2 ); source.copypixels( bluespot, new rectangle( 0, 0, clipbounds.xmax, clipbounds.ymax ), mouse );}onenterframe = function(){ //-- create burning area var mouse: point = new point( _xmouse - clipbounds.xmax/2, _ymouse - clipbounds.ymax/2 ); source.copypixels( bluespot, new rectangle( 0, 0, clipbounds.xmax, clipbounds.ymax ), mouse ); //-- the flames matrix with some randoms to expand the flame sidewards var flamematrix: array = [ 0, 0, 0, 0, 0.2, 0, 0, 1.6, 0 ]; flamematrix[3] = math.random() * .001; flamematrix[5] = math.random() * .001; flamematrix[6] = .4 + math.random() * .1; flamematrix[8] = .4 + math.random() * .1; flame.matrix = flamematrix; //-- applying the filter 3 times to increase the flame speed //-- compute the affected region by "generatefilterrect", "getcolorboundsrect" var area: rectangle = source.generatefilterrect( source.getcolorboundsrect( 0xff, 0, false ), flame ); source.applyfilter( source, area, area.topleft, flame ); area = source.generatefilterrect( area, flame ); source.applyfilter( source, area, area.topleft, flame ); area = source.generatefilterrect( area, flame ); source.applyfilter( source, area, area.topleft, flame ); //-- remap the the flame bitmap with fire colors output.palettemap( source, area, area.topleft, null, null, firepalette ); //-- fps if( gettimer() - 1000 > ms ) { ms = gettimer(); fps = frame; fpsdisplay.text = fps.tostring(); frame = 0; } else { frame++; }}var mousedown: boolean = false;onmousedown = function(){ mousedown = true;}onmouseup = function(){ onenterframe(); mousedown = false; }createtextfield( "fpsdisplay", 99, 0, 0, 60, 20 );fpsdisplay.textcolor = 0xffffff;fpsdisplay.selectable = false;
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对应的as代码：gradient.as

代码拷贝框
import de.popforge.bitmap.shape;import <a href="/list/flash/index.html" title="flash" target="_blank"><acronym>flash</acronym></a>.display.bitmapdata;import <a href="/list/flash/index.html" title="flash" target="_blank"><acronym>flash</acronym></a>.geom.colortransform;import <a href="/list/flash/index.html" title="flash" target="_blank"><acronym>flash</acronym></a>.geom.matrix;class de.popforge.bitmap.gradient{ public static function createxygradient(): bitmapdata { /* * get canvas */ var g: shape = shape.get(); if( g == null ) { return null; } var xygradient: bitmapdata = new bitmapdata( 256, 256, false, 0 ); var matrix: matrix = new matrix(); /* * create y as blue colorvalues */ matrix.creategradientbox( 256, 256, math.pi/2, 0, 0 ); g.begingradientfill( 'linear', [ 0, 0x0000ff ], [ 100, 100 ], [ 0, 0xff ], matrix ); g.moveto( 0, 0 ); g.l<a href="/list/net/index.html" title=".net" target="_blank"><acronym>.net</acronym></a>o( 256, 0 ); g.l<a href="/list/net/index.html" title=".net" target="_blank"><acronym>.net</acronym></a>o( 256, 256 ); g.l<a href="/list/net/index.html" title=".net" target="_blank"><acronym>.net</acronym></a>o( 0, 256 ); g.l<a href="/list/net/index.html" title=".net" target="_blank"><acronym>.net</acronym></a>o( 0, 0 ); g.endfill(); matrix.identity(); xygradient.draw( g, matrix ); g.clear(); /* * create x as green colorvalues */ matrix.creategradientbox( 256, 256, 0, 0, 0 ); g.begingradientfill( 'linear', [ 0, 0x00ff00 ], [ 100, 100 ], [ 0, 0xff ], matrix ); g.moveto( 0, 0 ); g.l<a href="/list/net/index.html" title=".net" target="_blank"><acronym>.net</acronym></a>o( 256, 0 ); g.l<a href="/list/net/index.html" title=".net" target="_blank"><acronym>.net</acronym></a>o( 256, 256 ); g.l<a href="/list/net/index.html" title=".net" target="_blank"><acronym>.net</acronym></a>o( 0, 256 ); g.l<a href="/list/net/index.html" title=".net" target="_blank"><acronym>.net</acronym></a>o( 0, 0 ); g.endfill(); matrix.identity(); xygradient.draw( g, matrix, null, 'add' ); g.removemovieclip(); return xygradient; } public static function createdisplacementmapfrommidmap( midmap: bitmapdata ): bitmapdata { var displace: bitmapdata = createxygradient(); if( displace == null ) { return null; } var colortransform: colortransform = new colortransform(); var m: matrix = new matrix(); colortransform.greenmultiplier = .5; colortransform.bluemultiplier = .5; displace.draw( displace, m, colortransform ); colortransform.greenoffset = 128; colortransform.blueoffset = 128; displace.draw( midmap, m, colortransform, 'difference' ); return displace; } /* * returns an array with 32bit colorvalues * usefull to remap a bitmap using 'palettemap' */ public static function fillarray( colors: array, alphas: array, ratios: array ): array { var g: shape = shape.get(); if( g == null ) { return null; } var array: array = new array; var m: matrix = new matrix(); m.a = m.d = .15625; m.b = m.c = 0; m.tx = m.ty = 128; g.begingradientfill( 'linear', colors, alphas, ratios, m ); g.moveto( 0, 0 ); g.l<a href="/list/net/index.html" title=".net" target="_blank"><acronym>.net</acronym></a>o( 256, 0 ); g.l<a href="/list/net/index.html" title=".net" target="_blank"><acronym>.net</acronym></a>o( 256, 1 ); g.l<a href="/list/net/index.html" title=".net" target="_blank"><acronym>.net</acronym></a>o( 0, 1 ); g.l<a href="/list/net/index.html" title=".net" target="_blank"><acronym>.net</acronym></a>o( 0, 0 ); g.endfill(); var bmp: bitmapdata = new bitmapdata( 256, 1, true, 0 ); m.identity(); bmp.draw( g, m ); g.removemovieclip(); var x: number = 256; while( --x > -1 ) { array[x] = bmp.getpixel32( x, 0 ); } return array; }}
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shap.as

代码拷贝框
import <a href="/list/flash/index.html" title="flash" target="_blank"><acronym>flash</acronym></a>.display.bitmapdata;class de.popforge.bitmap.shape extends movieclip{ static var id: string = '__packages.de.popforge.bitmap.shape'; static private var container: movieclip; static public function setcontainer( container: movieclip ): void { shape.container = container; object.registerclass( id, shape ); } static public function get(): shape { if( container == undefined ) { trace( 'error: no container is defined. call shape.setcontainer( timeline: movieclip );' ); return null; } var d: number = container.getnexthighestdepth(); return shape( container.attachmovie( id, d.tostring(), d ) ); } public function rasterize( target: bitmapdata ): void { target.draw( this ); }}
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源文件下载：fire.zip

出处：相关论坛
责任编辑：moby

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