mirror of
https://github.com/NASAWorldWind/WebWorldWind.git
synced 2026-01-18 15:12:57 +00:00
91 lines
3.9 KiB
JavaScript
91 lines
3.9 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 and pick SurfaceImages.
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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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// Create a surface image using a static image.
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var surfaceImage1 = new WorldWind.SurfaceImage(new WorldWind.Sector(40, 50, -120, -100),
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"data/400x230-splash-nww.png");
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// Create a surface image using a static image and apply filtering to it.
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var surfaceImage2 = new WorldWind.SurfaceImage(new WorldWind.Sector(50, 60, -80, -60),
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"data/surface-image-nearest.png");
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surfaceImage2.resamplingMode = WorldWind.FILTER_NEAREST; // or FILTER_LINEAR by default
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// Create a surface image using a dynamically created image with a 2D canvas.
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var canvas = document.createElement("canvas"),
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ctx2d = canvas.getContext("2d"),
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size = 64, c = size / 2 - 0.5, innerRadius = 5, outerRadius = 20;
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canvas.width = size;
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canvas.height = size;
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var gradient = ctx2d.createRadialGradient(c, c, innerRadius, c, c, outerRadius);
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gradient.addColorStop(0, 'rgb(255, 0, 0)');
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gradient.addColorStop(0.5, 'rgb(0, 255, 0)');
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gradient.addColorStop(1, 'rgb(255, 0, 0)');
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ctx2d.fillStyle = gradient;
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ctx2d.arc(c, c, outerRadius, 0, 2 * Math.PI, false);
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ctx2d.fill();
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var surfaceImage3 = new WorldWind.SurfaceImage(new WorldWind.Sector(30, 40, -100, -80),
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new WorldWind.ImageSource(canvas));
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// Add the surface images to a layer and the layer to the WorldWindow's layer list.
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var surfaceImageLayer = new WorldWind.RenderableLayer();
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surfaceImageLayer.displayName = "Surface Images";
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surfaceImageLayer.addRenderable(surfaceImage1);
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surfaceImageLayer.addRenderable(surfaceImage2);
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surfaceImageLayer.addRenderable(surfaceImage3);
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wwd.addLayer(surfaceImageLayer);
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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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}); |