/** * see http://wonderfl.net/code/68080952a04c2257794d4643f6ddf3f17465c6bc */ package { import flash.display.GraphicsPathCommand; import flash.display.Sprite; import flash.events.Event; import flash.filters.GlowFilter; import flash.geom.Matrix3D; import flash.geom.PerspectiveProjection; import flash.geom.Utils3D; import flash.geom.Vector3D; import flash.system.Capabilities; import flash.utils.getTimer; [SWF(width=465,height=465,frameRate=60,backgroundColor=0x000000)] public class Curve3D extends Sprite { private var commands:Vector.<int>; private var vertices:Vector.<Number>; private var projected:Vector.<Number>; private var uvtData:Vector.<Number>; private var progress:Number = 0; private var viewport:Sprite; public function Curve3D() { commands = new Vector.<int>(); vertices = new Vector.<Number>(); projected = new Vector.<Number>(); uvtData = new Vector.<Number>(); createModel(); viewport = new Sprite(); viewport.x = 465 / 2; viewport.y = 465 / 2; viewport.filters = [new GlowFilter(0x0C99FF, 0.7, 32, 32, 2, 3)]; addChild(viewport); addEventListener(Event.ENTER_FRAME, enterFrameHandler); } private function createModel():void { commands.length = 0; vertices.length = 0; uvtData.length = 0; var x1:Number = Math.random() * 1000 - 500; var y1:Number = Math.random() * 1000 - 500; var z1:Number = Math.random() * 1000 - 500; commands.push(GraphicsPathCommand.MOVE_TO); vertices.push(Math.random() * 1000 - 500); vertices.push(Math.random() * 1000 - 500); vertices.push(Math.random() * 1000 - 500); vertices.push(x1); vertices.push(y1); vertices.push(z1); uvtData.push(0, 0, 0); uvtData.push(0, 0, 0); for (var i:int=0; i<50; i++) { var x2:Number = Math.random() * 1000 - 500; var y2:Number = Math.random() * 1000 - 500; var z2:Number = Math.random() * 1000 - 500; commands.push(GraphicsPathCommand.CURVE_TO); vertices.push((x1 + x2) / 2); vertices.push((y1 + y2) / 2); vertices.push((z1 + z2) / 2); vertices.push(x2); vertices.push(y2); vertices.push(z2); uvtData.push(0, 0, 0); uvtData.push(0, 0, 0); x1 = x2; y1 = y2; z1 = z2; } } private function enterFrameHandler(event:Event):void { var pers:PerspectiveProjection = new PerspectiveProjection(); pers.fieldOfView = 60; var m:Matrix3D = new Matrix3D(); if (Capabilities.version.indexOf("10,0,12,36") != -1) { m.appendScale(20, 20, 20); } m.appendRotation(getTimer() * 0.0059, Vector3D.Y_AXIS); m.appendRotation(getTimer() * 0.0071, Vector3D.X_AXIS); m.appendTranslation(0, 0, 1000); m.append(pers.toMatrix3D()); Utils3D.projectVectors(m, vertices, projected, uvtData); progress += 0.3; if (progress >= commands.length - 1) { progress %= commands.length - 1; createModel(); } var index:int = Math.floor(progress); if (index != progress) { var i:int = index * 4; var r:Number = progress - index; var s:Number = 1 - r; projected[i + 4] = projected[i + 0] * s * s + projected[i + 2] * 2 * r * s + projected[i + 4] * r * r; projected[i + 5] = projected[i + 1] * s * s + projected[i + 3] * 2 * r * s + projected[i + 5] * r * r; projected[i + 2] = projected[i + 2] * r + projected[i + 0] * s; projected[i + 3] = projected[i + 3] * r + projected[i + 1] * s; } var c:Vector.<int> = commands.slice(0, Math.ceil(progress + 1)); viewport.graphics.clear(); viewport.graphics.lineStyle(8, 0x0C6CFF); viewport.graphics.drawPath(c, projected); viewport.graphics.lineStyle(4, 0x78E8FF); viewport.graphics.drawPath(c, projected); viewport.graphics.lineStyle(1, 0xFFFFFF); viewport.graphics.drawPath(c, projected); } } }