我正在尝试使用 lartoolkit 做一些增强现实项目。我现在可以将简单的 3d 对象放在我的标记上,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。我正在尝试追踪标记的旋转。有一个 container:DisplayObject3D 我的应用程序使用它来添加 3d 对象,我跟踪了这个 :"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,它毫无问题地使用了它的容器对象的旋转。我想我应该提到我正在使用 lynda.com 的 seb lee delisle papervision3d 课程的练习文件。任何人都有使用 flartoolkit 的经验吗?我的代码的主要功能如下:
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();
}