Cesium nautical charts

gistfile1.txt

var viewer = new Cesium.Viewer('cesiumContainer', {
    imageryProvider : new Cesium.ArcGisMapServerImageryProvider({
        url : '//server.arcgisonline.com/ArcGIS/rest/services/World_Street_Map/MapServer'
    }),
    baseLayerPicker : false
});

var layers = viewer.scene.imageryLayers;
var provider = new Cesium.TileMapServiceImageryProvider({
    url : '//localhost/NOAA/',
    maximumLevel : 17,
    credit : 'DeepZoom LLC'
});

provider.requestImage = function(x, y, level) {
    // build the actual URL however you need, including the query string
    var url = this._url + 'Z' + level + '/' + y + '/' + x + '.png';
    return Cesium.ImageryProvider.loadImage(this, url);
};

var blackMarble = layers.addImageryProvider(provider);
//blackMarble.alpha = 0.5;
//blackMarble.brightness = 2.0;


layers.addImageryProvider(new Cesium.SingleTileImageryProvider({
    url : '../images/Cesium_Logo_overlay.png',
    rectangle : Cesium.Rectangle.fromDegrees(-75.0, 28.0, -67.0, 29.75)
}));