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GeoTiffExample.js
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GeoTiffExample.js
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/*
* Copyright 2015-2018 WorldWind Contributors
*
* 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.
*/
requirejs(['./WorldWindShim',
'./LayerManager'],
function (WorldWind,
LayerManager) {
"use strict";
WorldWind.Logger.setLoggingLevel(WorldWind.Logger.LEVEL_WARNING);
var wwd = new WorldWind.WorldWindow("canvasOne");
var layers = [
{layer: new WorldWind.BMNGLayer(), enabled: false},
{layer: new WorldWind.BingAerialWithLabelsLayer(null), enabled: true},
{layer: new WorldWind.CompassLayer(), enabled: true},
{layer: new WorldWind.CoordinatesDisplayLayer(wwd), enabled: true},
{layer: new WorldWind.ViewControlsLayer(wwd), enabled: true}
];
// Create GeoTiff layer
var geoTiffLayer = new WorldWind.RenderableLayer("GeoTiff");
geoTiffLayer.enabled = false;
geoTiffLayer.showSpinner = true;
for (var l = 0; l < layers.length; l++) {
layers[l].layer.enabled = layers[l].enabled;
wwd.addLayer(layers[l].layer);
}
// Add GeoTiff to the WorldWindow's layer list. Disabled until its image is loaded.
wwd.addLayer(geoTiffLayer);
// Create a layer manager for controlling layer visibility.
var layerManager = new LayerManager(wwd);
var resourceUrl = "https://worldwind.arc.nasa.gov/web/examples/data/black_sea_rgb.tif";
// Define a parser completion callback
var parserCallback = function (geoTiffReader, xhrStatus) {
if (!geoTiffReader) {
// Error, provide the status text to the console
console.log(xhrStatus);
return;
}
var surfaceGeoTiff = new WorldWind.SurfaceImage(
geoTiffReader.metadata.bbox,
new WorldWind.ImageSource(geoTiffReader.getImage())
);
geoTiffLayer.addRenderable(surfaceGeoTiff);
geoTiffLayer.enabled = true;
geoTiffLayer.showSpinner = false;
layerManager.synchronizeLayerList();
wwd.redraw();
wwd.goTo(new WorldWind.Position(43.69, 28.54, 55000));
};
// Load the GeoTiff using the Reader's built in XHR retrieval function
WorldWind.GeoTiffReader.retrieveFromUrl(resourceUrl, parserCallback);
});