//forked from: Saqoosha challenge for amateurs package { import flash.display.Sprite; import flash.events.Event; import flash.display.Bitmap; import flash.display.BitmapData; import flash.geom.Point; import flash.geom.Matrix; import flash.geom.ColorTransform; import flash.geom.Rectangle; import flash.filters.BlurFilter; import org.libspark.betweenas3.easing.Circ; [SWF(width=465, height=465, backgroundColor=0x000000, frameRate=30)] public class IridescentLocus extends Sprite { private const STAGE_WIDTH = stage.stageWidth; private const STAGE_HEIGHT = stage.stageHeight; private const STAGE_CENTER_X = stage.stageWidth / 2; private const STAGE_CENTER_Y = stage.stageHeight / 2; private var SatelliteAmount:uint = 20; private var satellites:Array = []; private var FocalLength:Number = 124; private var grad:Gradation; private var rAcrc:uint = 12; private var _canvas:BitmapData; private var bmp:Bitmap; private var _particles:Array; private var _rect:Rectangle; private var cTra:ColorTransform; public function IridescentLocus() { init(); } private function init():void { _canvas = new BitmapData (STAGE_WIDTH, STAGE_HEIGHT, true, 0xFFFFFF); bmp = new Bitmap (_canvas); addChild (bmp); _rect = new Rectangle(0, 0, STAGE_WIDTH, STAGE_HEIGHT); cTra = new ColorTransform( 0.92, 0.92, 0.92, 1.0 ); IridescentMake(); for ( var i:uint = 0; i < SatelliteAmount; i++ ) { var s:Satellite = new Satellite(); satellites.push( s ); WtoS( s ); } addEventListener( Event.ENTER_FRAME, onEnterFrameHandler ); } private function WtoS( t ):void { if ( t.pz > -FocalLength ) { t.bv_orgX = t.v_orgX; t.bv_orgY = t.v_orgY; t.bv_trmX = t.v_trmX; t.bv_trmY = t.v_trmY; t.bx = t.x; t.by = t.y; t.scale = FocalLength / ( FocalLength + t.pz ); t.x = STAGE_CENTER_X + t.px * t.scale; t.y = STAGE_CENTER_Y + t.py * t.scale; t.v_orgX = STAGE_CENTER_X + t.orgX * t.scale; t.v_orgY = STAGE_CENTER_Y + t.orgY * t.scale; t.v_trmX = STAGE_CENTER_X + t.trmX * t.scale; t.v_trmY = STAGE_CENTER_Y + t.trmY * t.scale; t.scaleX = t.scaleY = t.scale; t.visible = true; } else { t.visible = false; } } private function onEnterFrameHandler( e:Event ) { _canvas.lock(); _canvas.colorTransform(_rect, cTra); for ( var i:uint = 0; i < SatelliteAmount; i++ ) { var s = satellites[ i ]; s.motion(); s.axisCalculate(); WtoS( s ); var varX:Number = ( s.v_trmX - s.v_orgX ) / rAcrc; var varY:Number = ( s.v_trmY - s.v_orgY ) / rAcrc; var b_varX:Number = ( s.bv_trmX - s.bv_orgX ) / rAcrc; var b_varY:Number = ( s.bv_trmY - s.bv_orgY ) / rAcrc; for ( var j:uint = 0; j < rAcrc; j++ ) { var line:Sprite = new Sprite(); line.graphics.lineStyle( 1.6, grad.getColor( j / rAcrc ) ); line.graphics.moveTo( s.x + varX * j - varX * rAcrc / 2, s.y + varY * j - varY * rAcrc / 2 ); line.graphics.lineTo( s.bx + b_varX * j - b_varX * rAcrc / 2, s.by + b_varY * j - b_varY * rAcrc / 2 ); _canvas.draw( line ) } } _canvas.unlock(); } private function IridescentMake():void { grad = new Gradation( 0x660066, 0x0000FF, 0x00FFFF, 0x00FF00, 0xFFFF00, 0xFF6600, 0xFF0000 ); grad.setEasing(Circ.easeInOut); } } } import flash.display.Sprite; class Satellite extends Sprite { public var scale:Number; public var px:Number; public var py:Number; public var pz:Number; public var vx:Number; public var vy:Number; public var vz:Number; public var line_width:Number; public var pr:Number; public var vr:Number; public var orgX:Number; public var orgY:Number; public var orgZ:Number; public var trmX:Number; public var trmY:Number; public var trmZ:Number; public var v_orgX:Number; public var v_orgY:Number; public var bv_orgX:Number; public var bv_orgY:Number; public var v_trmX:Number; public var v_trmY:Number; public var bv_trmX:Number; public var bv_trmY:Number; public var bx:Number; public var by:Number; public var hx:Number; public var hy:Number; public var hz:Number; public var ratioX:Number; public var ratioY:Number; public var ratioZ:Number; public var friction:int; public var depth:int; public function Satellite() { init(); } private function init():void { line_width = 6; px = Math.random() * 240 - 120; py = Math.random() * 240 - 120; pz = Math.random() * 240 - 120; hx = 0; hy = 0; hz = 0; friction = 1; depth = 640; ratioX = ( Math.random() * 4 + 2 ) / depth; ratioY = ( Math.random() * 4 + 2 ) / depth; ratioZ = ( Math.random() * 4 + 2 ) / depth; vx = 0; vy = 0; vz = 0; pr = 0; vr = Math.random() * 0.6 - 0.3; axisCalculate(); } public function motion():void { vx = ( vx * friction) + ( ( hx - px ) * ratioX ); vy = ( vy * friction) + ( ( hy - py ) * ratioY ); vz = ( vz * friction) + ( ( hz - pz ) * ratioZ ); px += vx; py += vy; pz += vz; if ( Math.abs( px ) < 8 && Math.abs( py ) < 8 && Math.abs( pz ) < 8 ) { if( Math.abs( vx ) < 1 && Math.abs( vy ) < 1 && Math.abs( vz ) < 1 ){ init(); } } } public function axisCalculate():void { var pp_orgX:Number = px + 0; var pp_orgY:Number = py + line_width / 2; var pp_orgZ:Number = pz + 0; var pp_trmX:Number = px + 0; var pp_trmY:Number = py - line_width / 2; var pp_trmZ:Number = pz + 0; var angle:Number = Math.atan2( py, px ); pr += vr; angle += pr; var p_orgX:Number = Math.cos( angle ) * ( pp_orgX - px ) - Math.sin( angle ) * ( pp_orgY - py ); var p_orgY:Number = Math.cos( angle ) * ( pp_orgY - py ) + Math.sin( angle ) * ( pp_orgX - px ); var p_trmX:Number = Math.cos( angle ) * ( pp_trmX - px ) - Math.sin( angle ) * ( pp_trmY - py ); var p_trmY:Number = Math.cos( angle ) * ( pp_trmY - py ) + Math.sin( angle ) * ( pp_trmX - px ); p_orgX += px; p_orgY += py; p_trmX += px; p_trmY += py; orgX = p_orgX; orgY = p_orgY; trmX = p_trmX; trmY = p_trmY; } } import frocessing.color.ColorLerp; import org.libspark.betweenas3.core.easing.IEasing; import org.libspark.betweenas3.easing.Linear; class Gradation { private var _colors:Array; private var _easing:IEasing; public function Gradation(...args) { _colors = args.concat(); _easing = Linear.linear; } public function setEasing(easing:IEasing):void { _easing = easing; } public function getColor(position:Number):uint { position = (position < 0 ? 0 : position > 1 ? 1 : position) * (_colors.length - 1); var idx:int = position; var alpha:Number = _easing.calculate(position - idx, 0, 1, 1); if (alpha == 0) { return _colors[idx]; } else { return ColorLerp.lerp(_colors[idx], _colors[idx + 1], alpha); } } }