Forked from: onedayitwillmake's Proximity step 1 diff:113 Proximity step 2 onedayitwill.. forked:1favorite:2lines:106license : MIT License modified : 2009-05-09 05:35:15 Embed Tweet package { import flash.display.GradientType; import flash.display.Graphics; import flash.display.Shape; import flash.display.SpreadMethod; import flash.display.Sprite; import flash.display.StageQuality; import flash.events.Event; import flash.geom.Matrix; [SWF(width="465", height="465", background="#000000")] public class Proximity extends Sprite { //Parameters private var _cCount :int = 0; private var _cMax :int = 60; //Rendering private var _canvas :Sprite; public var _canvasGraphics :Graphics //Reference public var _lastCircle :Circle; public function Proximity() { stage.quality = StageQuality.MEDIUM; addChildAt(createBG(), 0); addChild(_canvas = new Sprite()); _canvasGraphics = _canvas.graphics; addEventListener(Event.ENTER_FRAME, loop); } private function createBG():Sprite { var matr:Matrix = new Matrix(); matr.createGradientBox(465, 465, Math.PI / 2, 0, 0); var bg:Sprite = new Sprite(); bg.graphics.beginGradientFill ( GradientType.LINEAR, [0xDEDBA7, 0xD13F32], //colors [1, 1], //alphas [0, 255], //ratios matr, //matrix SpreadMethod.PAD ); bg.graphics.drawRect(0, 0, 465, 465); bg.graphics.endFill(); return bg; } /** * Main program loop */ private function loop(e:Event):void { draw(); create(); } /** * Creates more circles if we have not reached the maximum count */ public function create():void { if(Math.random() < 0.05 || _cCount >= _cMax) return; var c:Circle = new Circle(this); c.x = Math.random() * stage.stageWidth; c.y = Math.random() * stage.stageHeight; _canvas.addChild(c); _cCount++; if(_lastCircle) c._prev = _lastCircle; _lastCircle = c; } /** * Draws the proximity field between the circles */ public function draw():void { _canvas.graphics.clear(); _canvas.graphics.lineStyle(0.5, 0xffffff, 0.3); if(_lastCircle == null) return; _lastCircle.checkForProximity(_lastCircle._prev); //Connect //_lastCircle.alpha *= 0.6 + Math.random() * 0.4 // _canvas.graphics.moveTo(_lastCircle.x, _lastCircle.y); // _canvas.graphics.curveTo(c.x, c.y, (c.x - _lastCircle.x) * 0.5, (c.y - _lastCircle.y)*0.5); } } } import flash.display.Shape; import flash.display.Sprite; /** * Circles that live in the feild */ class Circle extends Sprite { private var _radius :Number = Math.random() * 15 + 5; private var _curveModifier :Number = Math.random() * 50 - 25; public var _p :Proximity; //reference public var _prev :Circle; //Linked list style behavior /** * Individual Circles know only the Circle created previously to their own */ public function Circle(p:Proximity):void { _p = p; graphics.beginFill(0x71B095) graphics.drawCircle(0, 0, 4); graphics.endFill(); graphics.beginFill(0x1A212C, 0.5) graphics.drawCircle(0, 0, _radius); graphics.endFill(); } /** * Check all previous circles for proximity, and do [something] * There is no need for each circle to check the ones ahead, * because they've already checked against this one. * * Called recursively for this circle, until the linked list reaches the first circle. * Once it does, it calls checkForProximity on its '_prev' * The sequence repeats until there are no more previous ones * * @param tc:Circle The 'test circle' we will check against. */ public function checkForProximity(tc:Circle):void { if(tc == null) return; // This is the first circle created (unless error of course!) var d:Number = Math.sqrt((x - tc.x) * (x - tc.x) + (y - tc.y) * (y - tc.y)); var polarity:int = Math.random() > 0.5 ? 0.5 : -0.5; if(d < 100) { _p._canvasGraphics.moveTo(x, y); //_p._canvasGraphics.lineTo(tc.x, tc.y); //_p._canvasGraphics.curveTo(tc.x, tc.y); _p._canvasGraphics.curveTo((x + tc.x) * 0.5, (y + tc.y) * 0.5 + _curveModifier, tc.x, tc.y); } if(tc._prev) checkForProximity(tc._prev); else if(_prev) _prev.checkForProximity(_prev._prev); } public function destroy():void { // _p._firstCircle = this; } } Code Fullscreen Preview Fullscreen FTMSuperfly xor proximity addChildAt graphics Math.sqrt Matrix createGradientBox addEventListener addChild Math.PI Event.ENTER_FRAME Math.random Event int Sprite Number sort new page view favorite forked pv494 forked from: Proximity step 2 nopants forked:2 favorite:0lines:106 (diff:1)
