// forked from jasu's forked from: forked from: code on 2008-12-24 // forked from jasu's forked from: code on 2008-12-24 // forked from jasu's code on 2008-12-24 // write as3 code here.. package{ import flash.display.*; import flash.events.*; import flash.geom.*; public class CubeRotationExample extends Sprite { private static const EDGE :Number = 40; //edge length private var mtxWorld :Matrix3D; //world transform matrix private var vCube :Vector.<Number>; //cube points private var vFlatCube :Vector.<Number>; //projected cube points private var vUVT :Vector.<Number>; //uvt data private var vIndicies :Vector.<int>; //triangle indicies private var sprCube :Sprite; //canvas object private var pp:PerspectiveProjection; public function CubeRotationExample(){ // setup and initialize stage.align = StageAlign.TOP_LEFT; stage.scaleMode = StageScaleMode.NO_SCALE; stage.quality = StageQuality.BEST; pp=new PerspectiveProjection; mtxWorld = pp.toMatrix3D(); mtxWorld.prependTranslation(0,0,pp.focalLength); vCube = Vector.<Number>([ EDGE,EDGE,-EDGE, EDGE,-EDGE,-EDGE, -EDGE,-EDGE,-EDGE, -EDGE,EDGE,-EDGE, EDGE,EDGE,EDGE, EDGE,-EDGE,EDGE, -EDGE,-EDGE,EDGE, -EDGE,EDGE,EDGE ]); vFlatCube = new Vector.<Number>(16); vUVT = new Vector.<Number>(24); vIndicies = Vector.<int>([0,1,2, 2,3,0, 4,7,6, 6,5,4, 0,4,5, 5,1,0, 1,5,6, 6,2,1, 2,6,7, 7,3,2, 4,0,3, 3,7,4]); sprCube = new Sprite(); addChild(sprCube); addEventListener(Event.ENTER_FRAME, onEnterFrame); } private function onEnterFrame(eo:Event):void { // center the cube sprCube.x = stage.stageWidth/2; sprCube.y = stage.stageHeight/2; // rotate the transform matrix mtxWorld.prependRotation(2, new Vector3D(0,1,0)); mtxWorld.prependRotation(2, new Vector3D(0,0,1)); mtxWorld.prependRotation(2, new Vector3D(1,0,0)); // project 3D data to 2D plane Utils3D.projectVectors(mtxWorld, vCube, vFlatCube, vUVT); // draw the cube using cube data sprCube.graphics.clear(); sprCube.graphics.beginFill(0xFF00FF); sprCube.graphics.lineStyle(1,0xFF0000,1); sprCube.graphics.drawTriangles(vFlatCube, vIndicies, null, TriangleCulling.POSITIVE); sprCube.graphics.endFill(); } } }