String 유형의 값을 관련없는 유형의 BitmapData에 암시 적으로 강제 변환합니다.

Question

저는 PaperVision3d 및 FLARToolkit (및 AS3 일반적으로)을 처음 사용합니다. 증강 현실 앱을 만드는 방법에 대해 YouTube에서 헛소리를하고 있습니다. 나는 개인 기능 루프에 오류를

return value for function 'loop' has no type declaration.  

Function does not have a body. 

및

을 얻고있다. 나는 내가 잘못하고있는 것을 정말로 파악할 수 없다. PLZ 도움말!

코드

package 
{ 
import flash.display.BitmapData; 
import flash.display.Sprite; 
import flash.events.Event; 
import flash.media.Camera; 
import flash.media.Video; 
import flash.utils.ByteArray; 

import org.libspark.flartoolkit.core.FLARCode; 
import org.libspark.flartoolkit.core.param.FLARParam; 
import org.libspark.flartoolkit.core.raster.rgb.FLARRgbRaster_BitmapData; 
import org.libspark.flartoolkit.core.transmat.FLARTransMatResult; 
import org.libspark.flartoolkit.detector.FLARSingleMarkerDetector; 
import org.libspark.flartoolkit.support.alternativa3d.FLARCamera3D; 
import org.libspark.flartoolkit.support.pv3d.FLARBaseNode; 
import org.libspark.flartoolkit.support.pv3d.FLARCamera3D; 
import org.papervision3d.lights.PointLight3D; 
import org.papervision3d.materials.BitmapFileMaterial; 
import org.papervision3d.materials.BitmapMaterial; 
import org.papervision3d.materials.utils.MaterialsList; 
import org.papervision3d.objects.primitives.Cube; 
import org.papervision3d.render.BasicRenderEngine; 
import org.papervision3d.scenes.Scene3D; 
import org.papervision3d.view.Viewport3D; 

[SWF(width="640", height="480", frameRate="30", backgroundColor="#ffffff")] 
public class testweb extends Sprite 
{ 
    [Embed(source="earth.pat", mimeType="application/octet-stream")] 
    private var marker:Class; 

    [Embed(source="camera_para.dat", mimeType="application/octet-stream")] 
    private var cam_params:Class; 

    //createFLAR variables 
    private var ar_params:FLARParam; 
    private var ar_marker:FLARCode; 
    //createCam variables 
    private var ar_vid:Video 
    private var ar_cam:Camera 
    //createBMP vairiables 
    private var ar_bmp:BitmapData; 
    private var ar_raster:FLARRgbRaster_BitmapData; 
    private var ar_detection:FLARSingleMarkerDetector; 
    //createPapervision variables 
    private var ar_scene:Scene3D; 
    private var ar_3dcam:org.libspark.flartoolkit.support.pv3d.FLARCamera3D; 
    private var ar_basenode:FLARBaseNode; 
    private var ar_viewport:Viewport3D; 
    private var ar_renderengine:BasicRenderEngine; 
    private var ar_transmat:FLARTransMatResult; 
    private var ar_cube:Cube; 

    public function testweb() 
    { 
     createFLAR(); 
     createCam(); 
     createBMP(); 
     createPapervision(); 
     addEventListener(Event.ENTER_FRAME, loop); 
    } 
    public function createFLAR() 
    { 
     ar_params= new FLARParam(); 
     ar_marker= new FLARCode(16,16); 
     ar_params.loadARParam(new cam_params() as ByteArray); 
     ar_marker.loadARPatt(new marker()); 
    } 
    public function createCam() 
    { 
     ar_vid= new Video(640, 480); 
     ar_cam= Camera.getCamera(); 
     ar_cam.setMode(640,480,30); 
     ar_vid.attachCamera(ar_cam); 
     addChild(ar_vid); 
    } 
    public function createBMP() 
    { 
     ar_bmp= new BitmapData(640,480); 
     ar_bmp.draw(ar_vid); 
     ar_raster= new FLARRgbRaster_BitmapData(ar_bmp); 
     ar_detection= new FLARSingleMarkerDetector(ar_params, ar_marker,80);   
    } 
    public function createPapervision() 
    { 
     ar_scene= new Scene3D(); 
     ar_3dcam= new org.libspark.flartoolkit.support.pv3d.FLARCamera3D(ar_params); 
     ar_basenode= new FLARBaseNode(); 
     ar_renderengine= new BasicRenderEngine(); 
     ar_transmat= new FLARTransMatResult(); 

     var ar_light:PointLight3D= new PointLight3D(); 
     ar_light.x= 1000; 
     ar_light.y= 1000; 
     ar_light.z= -1000; 

     var ar_bitmap:BitmapFileMaterial; 
     ar_bitmap=new BitmapFileMaterial ("LBP2.jpg"); 
     ar_bitmap.doubleSided=true; 

     ar_cube=new Cube(new MaterialsList({all:ar_bitmap}), 80, 80, 80); 
     ar_scene.addChild(ar_basenode); 
     ar_basenode.addChild(ar_cube); 
     addChild(ar_viewport); 
    } 

    private function loop(e:Event);void 
    { 
     ar_bmp.draw(ar_vid); 
     ar_cube.rotationX +=4; 
     ar_cube.rotationY +=6; 

     try 
     { 
      if(ar_detection.detectMarkerLite(ar_raster, 80) && ar_detection.getConfidence()>0.5) 
      { 
       ar_detection.getTransformMatrix(ar_transmat); 
       ar_basenode.setTransformMatrix(ar_transmat); 
       ar_renderengine.renderLayers(ar_scene, ar_3dcam, ar_viewport); 
      } 
     } 

     catch (e:Error){} 
    } 

} 

}

Answer 1

변경

private function loop(e:Event);void

private function loop(e:Event):void

Answer 2

오타처럼 보입니다.

private function loop(e:Event):void 

이 같은 대장 행

private function loop(e:Event);void 

변경 세미콜론에서