//////////////////////////////////////////////////////////////////////////////// // [AS3.0] ドットの光 (6) // http://www.project-nya.jp/modules/weblog/details.php?blog_id=1095 //////////////////////////////////////////////////////////////////////////////// package { import flash.display.Sprite; import flash.geom.Rectangle; [SWF(backgroundColor="#000000", width="465", height="465", frameRate="30")] public class Main extends Sprite { private var light:DotLight; public function Main() { Wonderfl.capture_delay(60); init(); } private function init():void { graphics.beginFill(0x000000); graphics.drawRect(0, 0, 465, 465); graphics.endFill(); light = new DotLight(new Rectangle(0, 0, 465, 465)); addChild(light); light.start(); } } } import flash.display.Sprite; import flash.display.Bitmap; import flash.display.BitmapData; import flash.display.PixelSnapping; import flash.display.BlendMode; import flash.geom.Matrix; import flash.geom.Rectangle; import flash.geom.Point; import flash.geom.ColorTransform; import flash.filters.BlurFilter; import flash.events.Event; import flash.utils.getTimer; class DotLight extends Sprite { private var rect:Rectangle; private var canvas:BitmapData; private var map:BitmapData; private var sparkle:BitmapData; private var afterglow:BitmapData; private static var scale:uint = 4; private var aMatrix:Matrix; private var colorTrans:ColorTransform; private var blur:BlurFilter; private var sMatrix:Matrix; private var offsets:Array; private var seed:uint; private var light:EmitLight; public function DotLight(r:Rectangle) { rect = r; init(); } private function init():void { afterglow = new BitmapData(rect.width*2/scale, rect.height*2/scale, false, 0xFF000000); var aBitmap:Bitmap = new Bitmap(afterglow, PixelSnapping.AUTO, true); aBitmap.scaleX = aBitmap.scaleY = scale/2; addChild(aBitmap); canvas = new BitmapData(rect.width, rect.height, true, 0x00000000); var cBitmap:Bitmap = new Bitmap(canvas); cBitmap.blendMode = BlendMode.ADD; addChild(cBitmap); map = new BitmapData(rect.width/scale, rect.height/scale, false, 0xFF000000); offsets = [new Point(), new Point()]; seed = Math.floor(Math.random()*1000); sparkle = new BitmapData(rect.width/scale, rect.height/scale, true, 0x00000000); var sBitmap:Bitmap = new Bitmap(sparkle); sBitmap.smoothing = true; sBitmap.blendMode = BlendMode.ADD; sBitmap.scaleX = sBitmap.scaleY = scale; addChild(sBitmap); aMatrix = new Matrix(2/scale, 0, 0, 2/scale, 0, 0); colorTrans = new ColorTransform(0.1, 0.1, 0.1); blur = new BlurFilter(2, 2, 1); sMatrix = new Matrix(1/scale, 0, 0, 1/scale, 0, 0); light = new EmitLight(canvas, map, scale); } public function start():void { addEventListener(Event.ENTER_FRAME, draw, false, 0, true); } public function stop():void { removeEventListener(Event.ENTER_FRAME, draw); } private function draw(evt:Event):void { var offset:Number = getTimer()*0.05; offsets[0].x = offsets[1].y = offset; map.perlinNoise(rect.width/scale, rect.height/scale, 2, seed, true, true, 1, false, offsets); light.create(10); canvas.lock(); canvas.fillRect(canvas.rect, 0x00000000); light.emit(); canvas.unlock(); sparkle.lock(); sparkle.fillRect(sparkle.rect, 0x00000000); sparkle.draw(canvas, sMatrix); sparkle.unlock(); afterglow.lock(); afterglow.draw(canvas, aMatrix, colorTrans, BlendMode.ADD); afterglow.applyFilter(afterglow, afterglow.rect, new Point(), blur); afterglow.unlock(); } } import flash.display.BitmapData; import flash.geom.Rectangle; import frocessing.color.ColorHSV; class EmitLight { private var canvas:BitmapData; private var map:BitmapData; private var rect:Rectangle; private var scale:uint; private var cx:uint; private var cy:uint; private var radius:uint; private static var yScale:Number = 0.25; private var dots:Array; private static var acceleration:Number = 0.01; private static var gravity:Number = 0.03; private static var deceleration:Number = 0.008; private var color:ColorHSV; private static var length:Number = 2; private var manager:Bresenham; public function EmitLight(c:BitmapData, m:BitmapData, s:uint) { canvas = c; map = m; rect = canvas.rect; scale = s; cx = rect.width*0.5; cy = rect.height*0.85; radius = rect.width*0.4; init(); } private function init():void { dots = new Array(); color = new ColorHSV(0, 0.4); manager = new Bresenham(canvas); } public function create(max:uint):void { for (var n:uint = 0; n < max; n++) { var angle:Number = Math.random()*360; var power:Number = Math.random() + 0.5; var dot:Dot = new Dot(cx, cy, angle, power); dot.x = cx + Math.cos(angle*Math.PI/180)*radius; dot.y = cy + Math.sin(angle*Math.PI/180)*radius*yScale; dot.px = dot.x; dot.py = dot.y; color.h = 60; dot.rgb = color.value; dots.push(dot); } } public function emit():void { for (var n:uint = 0; n < dots.length; n++) { var dot:Dot = dots[n]; var c:uint = map.getPixel(dot.x/scale, dot.y/scale); dot.cx += ((((c >> 16) & 0xFF) - 0x80) / 0x80)*5; dot.vy += gravity*dot.power; dot.vy *= 0.99; dot.vx += acceleration; dot.angle += dot.vx; dot.cy -= dot.vy; var px:Number = Math.cos(dot.angle*Math.PI/180)*radius; var py:Number = Math.sin(dot.angle*Math.PI/180)*radius*yScale; dot.x = dot.cx + px*(dot.energy*0.4 + 0.2); dot.y = dot.cy + py*(dot.energy*0.4 + 0.2); dot.energy -= deceleration; var x0:int = dot.x; var y0:int = dot.y; var x1:int = dot.x - (dot.x - dot.px)*length; var y1:int = dot.y - (dot.y - dot.py)*length; color.h = 60*dot.energy*0.5; dot.rgb = color.value; manager.draw(x0, y0, x1, y1, dot.rgb, dot.energy*0.5); dot.px = dot.x; dot.py = dot.y; if (dot.energy < 0) { dots.splice(n, 1); dot = null; } } } } class Dot { public var x:Number = 0; public var y:Number = 0; public var vx:Number = 0; public var vy:Number = 0; public var cx:Number = 0; public var cy:Number = 0; public var px:Number = 0; public var py:Number = 0; public var angle:Number = 0; public var power:Number = 1; public var energy:Number = 2; public var rgb:uint = 0xFFFFFF; public function Dot(_x:Number, _y:Number, a:Number, p:Number) { cx = _x; cy = _y; angle =a; power = p; } } import flash.display.BitmapData; class Bresenham { private var canvas:BitmapData; public function Bresenham(c:BitmapData) { canvas = c; } public function draw(x0:int, y0:int, x1:int, y1:int, color:uint, alpha:Number):void { var steep:Boolean = Math.abs(y1 - y0) > Math.abs(x1 - x0); var t:int; if (steep) { t = x0; x0 = y0; y0 = t; t = x1; x1 = y1; y1 = t; } if (x0 > x1) { t = x0; x0 = x1; x1 = t; t = y0; y0 = y1; y1 = t; } var dx:int = x1 - x0; var dy:int = Math.abs(y1 - y0); var e:int = dx*0.5; var ys:int = (y0 < y1) ? 1 : -1; var y:int = y0; for (var x:int = x0; x <= x1; x++) { if (steep) { plot(y, x, color, alpha); } else { plot(x, y, color, alpha); } e = e - dy; if (e < 0) { y = y + ys; e = e + dx; } } } private function plot(x:int, y:int, c:uint, a:Number):void { canvas.setPixel32(x, y, c | ((a*0xFF) << 24)); } } DotLight [Red]
