/*
 * Copyright 2003-2006, 2009, 2017, 2020 United States Government, as represented
 * by the Administrator of the National Aeronautics and Space Administration.
 * All rights reserved.
 *
 * The NASAWorldWind/WebWorldWind platform is licensed under the Apache License,
 * Version 2.0 (the "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License
 * at http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed
 * under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
 * CONDITIONS OF ANY KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations under the License.
 *
 * NASAWorldWind/WebWorldWind also contains the following 3rd party Open Source
 * software:
 *
 *    ES6-Promise – under MIT License
 *    libtess.js – SGI Free Software License B
 *    Proj4 – under MIT License
 *    JSZip – under MIT License
 *
 * A complete listing of 3rd Party software notices and licenses included in
 * WebWorldWind can be found in the WebWorldWind 3rd-party notices and licenses
 * PDF found in code  directory.
 */
/**
 * Illustrates how to use a GoToAnimator to smoothly move the view to a new location. This example listens for
 * terrain picks and moves the view to the location picked.
 */
requirejs(['./WorldWindShim',
        './LayerManager'],
    function (WorldWind,
              LayerManager) {
        "use strict";

        // Tell WorldWind to log only warnings and errors.
        WorldWind.Logger.setLoggingLevel(WorldWind.Logger.LEVEL_WARNING);

        // Create the WorldWindow.
        var wwd = new WorldWind.WorldWindow("canvasOne");

        // Create and add layers to the WorldWindow.
        var layers = [
            // Imagery layers.
            {layer: new WorldWind.BMNGLayer(), enabled: true},
            {layer: new WorldWind.BingAerialWithLabelsLayer(null), enabled: true},
            // Add atmosphere layer on top of all base layers.
            {layer: new WorldWind.AtmosphereLayer(), enabled: true},
            // WorldWindow UI layers.
            {layer: new WorldWind.CompassLayer(), enabled: true},
            {layer: new WorldWind.CoordinatesDisplayLayer(wwd), enabled: true},
            {layer: new WorldWind.ViewControlsLayer(wwd), enabled: true}
        ];

        for (var l = 0; l < layers.length; l++) {
            layers[l].layer.enabled = layers[l].enabled;
            wwd.addLayer(layers[l].layer);
        }

        // Now set up to handle clicks and taps.

        // The common gesture-handling function.
        var handleClick = function (recognizer) {
            // Obtain the event location.
            var x = recognizer.clientX,
                y = recognizer.clientY;

            // Perform the pick. Must first convert from window coordinates to canvas coordinates, which are
            // relative to the upper left corner of the canvas rather than the upper left corner of the page.
            var pickList = wwd.pick(wwd.canvasCoordinates(x, y));

            // If only one thing is picked and it is the terrain, tell the WorldWindow to go to the picked location.
            if (pickList.objects.length === 1 && pickList.objects[0].isTerrain) {
                var position = pickList.objects[0].position;
                wwd.goTo(new WorldWind.Location(position.latitude, position.longitude));
            }
        };

        // Listen for mouse clicks.
        var clickRecognizer = new WorldWind.ClickRecognizer(wwd, handleClick);

        // Listen for taps on mobile devices.
        var tapRecognizer = new WorldWind.TapRecognizer(wwd, handleClick);

        // Create a layer manager for controlling layer visibility.
        var layerManager = new LayerManager(wwd);
    });