forked from: 3d model viewer

/**
 * Copyright mapache ( http://wonderfl.net/user/mapache )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/llFv
 */

// forked from hacker_7jtkctfs's 3d model viewer
/* Based on http://papervision2.com/loading-complex-models/ */

package {
    import flash.events.Event;
    import flash.events.MouseEvent;
    import org.papervision3d.events.FileLoadEvent;
    import org.papervision3d.view.BasicView;
    import org.papervision3d.objects.DisplayObject3D;
    import org.papervision3d.objects.parsers.Collada;
    import org.papervision3d.objects.parsers.SketchupCollada;
    import org.papervision3d.materials.BitmapFileMaterial;
    import org.papervision3d.materials.utils.MaterialsList;
    import org.papervision3d.core.geom.renderables.Vertex3D;
    import flash.geom.Point;
    import flash.display.Loader;
    import flash.display.LoaderInfo;
    import flash.system.LoaderContext;
    import org.papervision3d.core.math.Matrix3D;
    
    public class Main extends BasicView{
        public var cow:DisplayObject3D;
        protected var materialList:MaterialsList;
        protected var bitmapFileMaterial:BitmapFileMaterial;
        
        /* handle user rotation */         
        public var mdp:Point = new Point(); // mouse down point
        public var bgClicked:Boolean = false;
        public var autoRotate:Boolean = true;        
            
        public function Main():void {
            super();
            /* get filename from arg */
            var varName:String;
            var paramObj:Object = LoaderInfo(this.root.loaderInfo).parameters;
            for (varName in paramObj) {
                myFlashVar = String(paramObj[varName]);
            }
            var myFlashVar:String;
            /* load textures */
            //materialList       = new MaterialsList();
            //bitmapFileMaterial  = new BitmapFileMaterial("daeModel/Cow.png");
            //materialList.addMaterial(bitmapFileMaterial,"all");
            
            /* load model */
            cow = new Collada(myFlashVar);
            //cow = new Collada("http://latinwebtools.com/vicsamples/AnimacionMicrosoft.FBX");
            cow = new SketchupCollada("http://www.ahlvik.se/colladaTest/Chief.dae");
            cow.moveDown(viewport.viewportHeight*0.5);
            cow.scale = 1;
            stage.addEventListener(MouseEvent.MOUSE_DOWN, startRotation);
            stage.addEventListener(MouseEvent.DOUBLE_CLICK, startAutoRotation);
            stage.addEventListener(MouseEvent.MOUSE_WHEEL, mouseScroll);
            scene.addChild(cow);
            startRendering();
        }
        private function mouseScroll(event:MouseEvent):Boolean{
            //camera.zoom += event.delta;
            var newScale:Number = cow.scale + event.delta*0.1;
            if(newScale > 0.0){
                cow.scale = newScale;    
            }
            return false;
        }
        private function startAutoRotation(event:MouseEvent):void{
            autoRotate = !autoRotate;
        }
       private function startRotation(event:MouseEvent):void{
               stage.addEventListener(MouseEvent.MOUSE_UP, endDrag);
            stage.addEventListener(Event.MOUSE_LEAVE, endDrag);
            stage.addEventListener(MouseEvent.MOUSE_MOVE, onMove);
            
            mdp.x = mouseX;
            mdp.y = mouseY;
            bgClicked = true;
            onMove();
           }
           public function endDrag(event:Event = null):void{
            stage.removeEventListener(MouseEvent.MOUSE_UP, endDrag);
            stage.removeEventListener(Event.MOUSE_LEAVE, endDrag);
            stage.removeEventListener(MouseEvent.MOUSE_MOVE, onMove);
            bgClicked = false;
        }
        public function onMove(event:Event=null):void{
            var m:Matrix3D;
            m = Matrix3D.rotationY((mouseX - mdp.x)/150);
            m = Matrix3D.multiply(m, Matrix3D.rotationX(-(mouseY - mdp.y)/150));
            cow.transform = Matrix3D.multiply(m, cow.transform);
            
            mdp.x = mouseX;
            mdp.y = mouseY;
        }
        override protected function onRenderTick(event:Event = null):void{
                super.onRenderTick(event);
                if(autoRotate == true && bgClicked != true){
                    cow.yaw(1);
                }    
        }
       
    }
   
}