var spotlightpath = null;
var pointlightpath = null;
var st = 0;
var stick = 0.01;
var pt = 0;
var ptick = 0.002;

function onupdateobject(userObject, deltatime) {
    // Position을 원래 지점을 중심으로 좌우로 바꿔 보자.
    if (spotlightpath) {
        var pos = spotlightpath.getPoint(st);

        userObject.setPosition( pos.x,pos.y,pos.z);

        st = st + stick;
        if (st > 1) {
            st = 1;
            stick = -0.01;
        }

        if (st < 0) {
            st = 0;
            stick = 0.01;
        }
    }

}

function onupdatepointlight(userObject, deltatime) {
    return;
    if (pointlightpath) {
        var pos = pointlightpath.getPoint(pt);

        userObject.position.x = pos.x;
        userObject.position.y = pos.y;
        userObject.position.z = pos.z;

        userObject.calcWorldPosition();

        pt = pt + ptick;
        if (pt > 1) {
            pt = 1;
            ptick = -0.002;
        }

        if (pt < 0) {
            pt = 0;
            ptick = 0.002;
        }
    }
}

function example() {
    var userLayer = cmworld.getLayer("lights");
    if (userLayer == null) {
        userLayer = new CMWORLD.UserObjectLayer("lights");
    }
    userLayer.clear();
    
    spotlightpath = new THREE.LineCurve3(new THREE.Vector3(127.08170026885196, 37.514861672838784, 22.494735240004957), new THREE.Vector3(127.08163544509294, 37.51402118030422, 15.358095726929605));

    var points = [];
    points.push(new THREE.Vector3(127.08107970146887, 37.515393126974985, 25.165089768357575));
    points.push(new THREE.Vector3(127.08061488297753, 37.51430875314632, 25.150525817647576));
    points.push(new THREE.Vector3(127.08272633187934, 37.513753770489274, 26.486457394436002));
    points.push(new THREE.Vector3(127.0832166850677, 37.514776751089435, 25.147140047512949));
    points.push(new THREE.Vector3(127.08129484376077, 37.51538427616677, 25.210114761255682));


    pointlightpath = new THREE.CatmullRomCurve3(points);

    cmworld.addLayer(userLayer);
    cmworld.enableSunLight(true);
    cmworld.setAmbientColor(0x111111);
    cmworld.option.worldTimer.setStartDateTime(2015, 7, 12, 3, 0, 0, 0);

    var lighttarget = new THREE.Object3D();
    var obj = new CMWORLD.UserObject("lighttarget", lighttarget, new THREE.Vector3(127.08304541369497, 37.515508546661586, 15.313188095577061), onupdateobject);
    userLayer.add(obj);

    var spotLight = new THREE.SpotLight(0xffffff);

    spotLight.distance = 200;
    spotLight.angle = 10;
    spotLight.castShadow = true;
    spotLight.shadow.darkness = 0.70;
    spotLight.intensity = 2;
    spotLight.angle = Math.PI / 10;
    spotLight.target = lighttarget;

    var obj = new CMWORLD.UserObject("spot1", spotLight, new THREE.Vector3(127.08170026885196, 37.514861672838784, 127.685133373364806), null);

    userLayer.add(obj);

    var step = 0.001;
    var pointlight = new THREE.PointLight(0xff0000, 1, 500);
    pointlight.castShadow = true;
    obj = new CMWORLD.UserObject("point1", pointlight, new THREE.Vector3(127.08107970146887, 37.515393126974985, 15.165089768357575), onupdatepointlight);
    userLayer.add(obj);
    //var helper = new THREE.SpotLightHelper(spotLight);
    //GlobalOption.scene.add(helper);

    var eye_x = 127.08174188396235;
    var eye_y = 37.51231017799103;
    var eye_h = 200;
    var look_x = 127.08174188396235;
    var look_y = 37.51505310508758;
    var look_h = 10;

    cmworld.gotoLookAt(eye_x, eye_y, eye_h, look_x, look_y, look_h);
}


function eveningscene() {
    var layer = cmworld.getLayer("lights");
    if( layer )
    {
        layer.clear();

        var lightHeight = 0;
        var lightPos = [];
        lightPos.push(new THREE.Vector3(127.07813809533553, 37.51645796832846, 14.261655086651444 + lightHeight));
        lightPos.push(new THREE.Vector3(127.07847984683701, 37.516434759315764, 14.219840464182198 + lightHeight));
        lightPos.push(new THREE.Vector3(127.0788121003733, 37.516409631899876, 14.282249722629786 + lightHeight));
        lightPos.push(new THREE.Vector3(127.07912043277196, 37.51637693197655, 14.345503480173647 + lightHeight));
        lightPos.push(new THREE.Vector3(127.07941115018765, 37.51634732081462, 14.396556237712502 + lightHeight));
        lightPos.push(new THREE.Vector3(127.07980166067114, 37.51630327084268, 14.576409575529397 + lightHeight));
        lightPos.push(new THREE.Vector3(127.08021702286379, 37.51627283154816, 14.391848648898304 + lightHeight));
        lightPos.push(new THREE.Vector3(127.08055137798868, 37.51624632276708, 14.34750865213573 + lightHeight));
        lightPos.push(new THREE.Vector3(127.08088169120012, 37.51621719085038, 14.350483493879437 + lightHeight));
        lightPos.push(new THREE.Vector3(127.08130839051688, 37.51618616867628, 14.377285748720169 + lightHeight));

        /*
        for (var i = 0; i < lightPos.length; i++) {
            var pointlight = new THREE.PointLight(0xffffff, 0.5, 15);
            pointlight.castShadow = true;
            obj = new CMWORLD.UserObject("point" + i.toString(), pointlight, lightPos[i], null );
            layer.add(obj);
        }*/




        for (var i = 0; i < lightPos.length; i++) {
            var lighttarget = new THREE.Object3D();
            var obj = new CMWORLD.UserObject("lighttarget", lighttarget, lightPos[i], null );
            layer.add(obj);

            var spotLight = new THREE.SpotLight(0xff00ff);

            spotLight.distance = 200;
            spotLight.castShadow = true;
            spotLight.shadow.darkness = 0.70;
            spotLight.intensity = 0.7;
            spotLight.angle = Math.PI / 5;
            spotLight.target = obj;

            var spotPos = lightPos[i].clone();
            spotPos.z += 100;
            var obj = new CMWORLD.UserObject("spot1", spotLight, spotPos, null);
        }

    }
}