package { /* 画像読んで、RチャンネルをピクセルのZに使う。 */ import flash.display.*; import flash.events.*; import flash.system.*; import flash.net.*; [SWF(width=465, height=465, frameRate=60, backgroundColor=0x222222)] public class Main extends Sprite { private var url　　　　　　　:String = "http://assets.wonderfl.net/images/related_images/8/80/80e0/80e07aa704555dd97cd1cf645a102c23e3735906"; private var loader :Loader; private var particles :Array = []; private var bitmapData :BitmapData; private var renderer :Renderer; public function Main():void { loader = new Loader(); loader.contentLoaderInfo.addEventListener( Event.COMPLETE, complateHandler ); loader.load( new URLRequest(url), new LoaderContext(true) ); } private function complateHandler(e:Event):void { loader.contentLoaderInfo.removeEventListener( Event.COMPLETE, complateHandler ); bitmapData = e.target.content.bitmapData; addChild( new Bitmap( bitmapData ) ); var color :int = 0; var xx :int = 0; var yy :int = 0; var w :int = bitmapData.width; var h :int = bitmapData.height; var s :int = 6; for( yy = 0; yy < h; yy++ ){ for ( xx = 0; xx < w; xx++ ){ color = bitmapData.getPixel( xx, yy ); var red :int = (color >> 16) & 0xff; var green :int = (color >> 8) & 0xff; var blue :int = (color >> 0) & 0xff; var px :Number = ( xx * s ) - ( w / 2 * s ); var py :Number = ( yy * s ) - ( h / 2 * s ); if ( red > 1 ) particles.push( new Particle( px, py, int(red/2)) ); } } // レンダリングスクリーン renderer = new Renderer( stage.stageWidth, stage.stageHeight, particles ); addChild( renderer ); stage.addEventListener( MouseEvent.MOUSE_DOWN, onMouse ); stage.addEventListener( MouseEvent.MOUSE_UP, onMouse ); addEventListener(Event.ENTER_FRAME, onEnterFrame ); } private function onMouse( e:MouseEvent ):void { if( e.type == "mouseDown" )mouseDown = true; if( e.type == "mouseUp" )mouseDown = false; } private var vx　:Number = 1; private var vy　:Number = 0; private var lx　:Number = 0; private var ly　:Number = 0; private var friction　　:Number = 0.999; private var mouseDown　:Boolean = false; private function onEnterFrame( e:Event ):void { // 横回転 if ( mouseDown ) vx = lx - stage.mouseX; else vx *= friction; if( Math.abs( vx ) <= 0.1 ) vx = 0; lx = stage.mouseX; // 縦回転 if( mouseDown ) vy = ly - stage.mouseY; else vy *= friction; if( Math.abs( vy ) <= 0.1 ) vy = 0; ly = stage.mouseY; // 座標回転 for each( var particle:Particle in particles ) { rocalRotate( particle, "z", "y", vy ); rocalRotate( particle, "x", "z", -vx ); } renderer.draw(); } private function rocalRotate( particle:Particle, a:String, b:String, v:Number ):void { var cos :Number, sin :Number, posA:Number, posB:Number, rad :Number = Math.PI / 360; cos = Math.cos( v * rad ); sin = Math.sin( v * rad ); posA = particle[a]; posB = particle[b]; particle[a] = posA * cos - posB * sin; particle[b] = posB * cos + posA * sin; } } } internal class Particle { public var x :Number = 0; public var y :Number = 0; public var z :Number = 0; public function Particle( x:Number=0, y:Number=0, z:Number=0 ):void { this.x = x; this.y = y; this.z = z; } } import flash.display.*; internal class Renderer extends Bitmap { private var particles :Array; private var vpX :int = 0; private var vpY :int = 0; private var fl :uint = 500; public function Renderer( _w:int, _h:int, particles:Array ):void { this.particles = particles; bitmapData = new BitmapData( _w, _h, true, 0x00 ); vpX = int( _w/2 ); vpY = int( _h/2 ); fl = 500; } public function draw():void { var scale:Number, viewX:int, viewY:int, color:uint, c1:int; bitmapData.lock(); bitmapData.fillRect( bitmapData.rect, 0x00 ); for each( var p:Particle in particles ) { scale = fl / ( fl + p.z ); viewX = vpX + p.x * scale; viewY = vpY + p.y * scale; c1 = 255 - ( ( p.z + 50) / 100 * 255 ); c1 = c1 < 0? 0:c1; c1 = c1 > 255? 255:c1; color = 0xff000000 | c1 << 16 | c1 << 8 | c1; bitmapData.setPixel32( viewX, viewY, color ); } bitmapData.unlock(); } }