mirror of
https://github.com/NASAWorldWind/WebWorldWind.git
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93 lines
4.0 KiB
JavaScript
93 lines
4.0 KiB
JavaScript
/*
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* Copyright 2003-2006, 2009, 2017, United States Government, as represented by the Administrator of the
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* National Aeronautics and Space Administration. All rights reserved.
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*
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* The NASAWorldWind/WebWorldWind platform is licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/**
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* Illustrates how to display text at geographic positions.
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*/
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requirejs(['./WorldWindShim',
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'./LayerManager'],
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function (WorldWind,
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LayerManager) {
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"use strict";
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// Tell WorldWind to log only warnings and errors.
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WorldWind.Logger.setLoggingLevel(WorldWind.Logger.LEVEL_WARNING);
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// Create the WorldWindow.
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var wwd = new WorldWind.WorldWindow("canvasOne");
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// Create and add layers to the WorldWindow.
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var layers = [
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// Imagery layers.
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{layer: new WorldWind.BMNGLayer(), enabled: true},
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{layer: new WorldWind.BMNGLandsatLayer(), enabled: false},
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{layer: new WorldWind.BingAerialWithLabelsLayer(null), enabled: true},
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// Add atmosphere layer on top of all base layers.
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{layer: new WorldWind.AtmosphereLayer(), enabled: true},
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// WorldWindow UI layers.
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{layer: new WorldWind.CompassLayer(), enabled: true},
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{layer: new WorldWind.CoordinatesDisplayLayer(wwd), enabled: true},
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{layer: new WorldWind.ViewControlsLayer(wwd), enabled: true}
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];
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for (var l = 0; l < layers.length; l++) {
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layers[l].layer.enabled = layers[l].enabled;
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wwd.addLayer(layers[l].layer);
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}
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var text,
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textAttributes = new WorldWind.TextAttributes(null),
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textLayer = new WorldWind.RenderableLayer("Oregon Peaks"),
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// A list of prominent peaks in the State of Oregon. Retrieved from:
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// https://en.wikipedia.org/wiki/List_of_Ultras_of_the_United_States
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peaks = [
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{'name': "South Sister", 'elevation': 3159, 'latitude': 44.1035, 'longitude': -121.7693},
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{'name': "Mount Hood", 'elevation': 3429, 'latitude': 45.3735, 'longitude': -121.6959},
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{'name': "Sacajawea Peak", 'elevation': 3000, 'latitude': 45.2450, 'longitude': -117.2929},
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{'name': "Mount Jefferson", 'elevation': 3201, 'latitude': 44.6743, 'longitude': -121.7996}
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];
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// Set up the common text attributes.
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textAttributes.color = WorldWind.Color.CYAN;
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// Set the depth test property such that the terrain does not obscure the text.
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textAttributes.depthTest = false;
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// For each peak, create a text shape.
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for (var i = 0, len = peaks.length; i < len; i++) {
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var peak = peaks[i],
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peakPosition = new WorldWind.Position(peak.latitude, peak.longitude, peak.elevation);
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text = new WorldWind.GeographicText(peakPosition, peak.name + "\n" + peak.elevation + " m");
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// Set the text attributes for this shape.
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text.attributes = textAttributes;
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// Add the text to the layer.
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textLayer.addRenderable(text);
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}
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// Add the text layer to the WorldWindow's layer list.
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wwd.addLayer(textLayer);
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// Point the camera and zoom to the State of Oregon.
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// Observe the decluttering feature according to camera altitude while zooming.
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wwd.goTo(new WorldWind.Position(44.00, -120.33, 800000));
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// Create a layer manager for controlling layer visibility.
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var layerManager = new LayerManager(wwd);
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}); |