2011-03-23 126 views
0

我想用flartoolkit做一些增强现实项目。我现在可以在我的标记上放置简单的3d对象,它工作正常,但我想给我的项目一些用户可以与之交互的事件。我试图追踪标记的旋转。有一个容器:我的应用程序用来添加3d对象的DisplayObject3D,我追溯到:“trace(container.rotationZ)”,但它只是返回0。我研究了另一个AR应用程序的源代码,它使用它的容器对象的旋转没有问题。我想我应该提到,我使用的是来自lynda.com的seb lee delisle papervision3d课程的练习文件。任何人都有使用flartoolkit的经验?我的我的代码的主要功能是如下:
增强现实flartoolkit旋转

public function AR_AlchemyBase() 
{ 
    super(640,480, false); 
    cameraParams = FLARParam.getDefaultParam(WIDTH * 0.5, HEIGHT * 0.5); 

    marker = new FLARCode(16, 16); 
    marker.loadARPattFromFile(new MarkerPattern()); 

    init(); 
} 

public function init():void 
{   
    video = new Video(WIDTH, HEIGHT); 
    webCam = Camera.getCamera(); 
    webCam.setMode(WIDTH, HEIGHT, 30); 
    video.attachCamera(webCam); 
    video.smoothing = true; 

    camBitmapData = new BitmapData(WIDTH *0.5, HEIGHT * 0.5,false, 0x000000); 

    camBitmap = new Bitmap(camBitmapData); 
    camBitmap.scaleX = camBitmap.scaleY = 2; 
    addChildAt(camBitmap,0); 

    raster = new FLARRgbRaster(WIDTH *0.5, HEIGHT * 0.5); 
    detector = new FLARSingleMarkerDetector(cameraParams, marker, 80); 
    result = new FLARTransMatResult(); 

    viewport.x = -4; 

    _camera = new FLARCamera3D(cameraParams); 
    container = new FLARMarkerNode(); 
    scene.addChild(container); 

    addSceneObjects(); 

    stage.addEventListener(Event.ENTER_FRAME, enterFrame); 
} 

//the function to put our objects in 
public function addSceneObjects() : void 
{ 

    var wmat:WireframeMaterial = new WireframeMaterial(0xff0000, 1, 2); 
    wmat.doubleSided = true; 

    var plane : Plane = new Plane(wmat, 80, 80); 
    container.addChild(plane); 

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

    var fmat:FlatShadeMaterial = new FlatShadeMaterial(light, 0xff22aa, 0x0); 
    var cube : Cube = new Cube(new MaterialsList({all: fmat}), 40, 40, 40); 
    cube.z = -20; 
    container.addChild(cube);   
} 

public function enterFrame(e:Event):void 
{ 
    var scaleMatrix:Matrix = new Matrix(); 
    scaleMatrix.scale(0.5, 0.5); 
    camBitmapData.draw(video, scaleMatrix); 

    raster.setBitmapData(camBitmapData); 

    counter++; 

    if(counter == 3) counter = 0; 

    var imageFound : Boolean = false 

    currentThreshold = threshold+ (((counter%3)-1)*thresholdVariance); 
    currentThreshold = (currentThreshold>255) ? 255 : (currentThreshold<0) ? 0 : currentThreshold; 

    imageFound = (detector.detectMarkerLite(raster, currentThreshold) && detector.getConfidence() > 0.5) ; 

    if(imageFound) 
    { 
     detector.getTransformMatrix(result); 
     container.setTransformMatrix(result); 
     container.visible = true; 

     threshold = currentThreshold; 
     thresholdVariance = 0; 

     if(onImageFound!=null) onImageFound(); 
    } 
    else 
    { 
     if(counter==2) thresholdVariance +=2; 

     if(thresholdVariance>128) thresholdVariance = 1; 

     if(onImageLost!=null) onImageLost(); 

    } 

    singleRender(); 
} 

回答

1

我可能无法帮助的主要问题,但如果你希望用户使用你需要设置他们的材料是互动的模型互动,否则他们不会收到鼠标事件。关于旋转......我可能会错过一些东西,但它是容器内的实例,而您正在应用旋转,而不是容器本身?

这帮助我得到一个简单的PV3D示例运行: PV3D Tutorial for basic interactivity