import com.transmote.flar.FLARManager;
import com.transmote.flar.marker.FLARMarkerEvent;
import com.transmote.flar.marker.FLARMarker;

import cityu.scm.FLARBasicViewPV3D;                     // easy-to-use wrapper for FLAR + PV3D

import org.papervision3d.objects.DisplayObject3D;
// ----------------------------------------------------------

var flarManager:FLARManager = new FLARManager("FlarDemo-TwoMarkers.xml");

addChildAt(Sprite(flarManager.flarSource), 0);

// ----------------------------------------------------------
var basicView:FLARBasicViewPV3D;
var pivotDo3ds: Array = new Array();
var modelDo3ds: Array = new Array();

flarManager.addEventListener(Event.INIT, flarManagerInited);
function flarManagerInited(e:Event): void {
    flarManager.removeEventListener(Event.INIT, flarManagerInited);

    // init basic view
    basicView = new FLARBasicViewPV3D(flarManager, stage.stageWidth, stage.stageHeight);
    addChild(basicView);

    // ----------------------------------------------
    // init 3D scene
    for (var i = 0; i < 2; i++) {
        pivotDo3ds.push(new DisplayObject3D());
        basicView.scene.addChild(pivotDo3ds[i]);
        pivotDo3ds[i].visible = false;
    }

    addSphere(); // for do3dContainers[0]
    addCube();   // for do3dContainers[1]
    // ----------------------------------------------

    // start to rendering 3D scene
    basicView.startRendering();

    stage.addEventListener(Event.ENTER_FRAME, forEveryFrame);
    stage.addEventListener(MouseEvent.CLICK, onClick);
}

// ----------------------------------------------------------
import org.papervision3d.objects.primitives.Sphere;

function addSphere(): void {
    // create a sphere with radius 20
    // Sphere(material:MaterialObject3D = null, radius:Number = 100, segmentsW:int = 8, segmentsH:int = 6)
    var sphere:Sphere = new Sphere(basicView.getMaterialByPatternId(0), 20, 16, 12);
    // shift sphere upwards so it sits on top of paper instead of being cut half-way
    sphere.z = 20;

    modelDo3ds.push(sphere); // for later use
    pivotDo3ds[0].addChild(sphere);
}
// ----------------------------------------------------------

// ----------------------------------------------------------
import org.papervision3d.objects.primitives.Cube;       // cube
import org.papervision3d.materials.shadematerials.FlatShadeMaterial; // shading & material
import org.papervision3d.materials.utils.MaterialsList;

function addCube(): void {
    // apply same material to all sides of the cube
    var material:FlatShadeMaterial = basicView.getMaterialByPatternId(1);
    var materialsList:MaterialsList = new MaterialsList({all: material});

    // The width of a marker on-screen at which the scale of
    // its transformation matrix is 1.0: 80 pixels.
    var cube:Cube = new Cube(materialsList, 40, 40, 40);
    // shift cube upwards so it sits on top of paper instead of being cut half-way
    cube.z = 20;

    modelDo3ds.push(cube); // for later use
    pivotDo3ds[1].addChild(cube);
}
// ----------------------------------------------------------

var moving:Boolean = false; // to control when to move sphere
function onClick(e:MouseEvent): void {
    moving = !moving;
}

function forEveryFrame(e:Event): void {
    // update model transformations wrt corresponding markers
    for (var i:uint = 0; i < flarManager.activeMarkers.length; i++) {
        var marker:FLARMarker = flarManager.activeMarkers[i];
        var pid:uint = marker.patternId;
        if (pid < 2) { // we have two models only
            pivotDo3ds[pid].visible = true;
            basicView.updateModelWrtMarker(pivotDo3ds[pid], marker);
        }
    }

    // add some animation effects
    modelDo3ds[0].localRotationZ += 2; // angle in degree
    modelDo3ds[1].localRotationZ += 2; // angle in degree

    if (moving) {
        modelDo3ds[0].x += 4; // moving sphere along x axis

        // get screen coordinate of sphere center
        var screenCoords:Point = basicView.screenCoords(modelDo3ds[0]);
        // screenXTxt.text = "Screen X: " + String(screenCoords.x);
        // screenYTxt.text = "Screen Y: " + String(screenCoords.y);
        screenTxt.text = "Screen X: " + Math.floor(screenCoords.x) + ", Screen Y: " + Math.floor(screenCoords.y);
        if (screenCoords.x < 0 || screenCoords.x > stage.stageWidth ||
            screenCoords.y < 0 || screenCoords.y > stage.stageHeight) {
            modelDo3ds[0].x = 0; // reset
        }

        // hit test
        if (basicView.hitTest(modelDo3ds[0], modelDo3ds[1], 1.5)) {
            modelDo3ds[0].x = 0; // reset
        }
    }
}