ArcGIS World Imagery Layer

src/gov/nasa/worldwind/layers/Earth/WorldImageryLayer.java

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+/**
+ * Copyright (C) 2014, United States Government as represented by the
+ * Administrator of the National Aeronautics and Space Administration,
+ * All Rights Reserved.
+ */
+package gov.nasa.worldwind.layers.Earth;
+
+import gov.nasa.worldwind.avlist.AVKey;
+import gov.nasa.worldwind.avlist.AVList;
+import gov.nasa.worldwind.avlist.AVListImpl;
+import gov.nasa.worldwind.geom.Angle;
+import gov.nasa.worldwind.geom.LatLon;
+import gov.nasa.worldwind.geom.Sector;
+import gov.nasa.worldwind.layers.BasicTiledImageLayer;
+import gov.nasa.worldwind.util.LevelSet;
+import gov.nasa.worldwind.util.Tile;
+import gov.nasa.worldwind.util.TileUrlBuilder;
+
+import java.net.MalformedURLException;
+import java.net.URL;
+
+/**
+ * @author Wiehann Matthysen
+ */
+public class WorldImageryLayer extends BasicTiledImageLayer
+{
+
+    public WorldImageryLayer()
+    {
+        super(makeLevels());
+    }
+
+    private static LevelSet makeLevels()
+    {
+        AVList params = new AVListImpl();
+
+        params.setValue(AVKey.TILE_WIDTH, 512);
+        params.setValue(AVKey.TILE_HEIGHT, 512);
+        params.setValue(AVKey.DATA_CACHE_NAME, "Earth/World Imagery");
+        params.setValue(AVKey.SERVICE, "http://server.arcgisonline.com/ArcGIS/rest/services/ESRI_Imagery_World_2D/MapServer/export");
+        params.setValue(AVKey.DATASET_NAME, "wi");
+        params.setValue(AVKey.FORMAT_SUFFIX, ".jpg");
+        params.setValue(AVKey.NUM_LEVELS, 15);
+        params.setValue(AVKey.NUM_EMPTY_LEVELS, 9);
+        params.setValue(AVKey.LEVEL_ZERO_TILE_DELTA, new LatLon(Angle.fromDegrees(36d), Angle.fromDegrees(36d)));
+        params.setValue(AVKey.SECTOR, Sector.FULL_SPHERE);
+        params.setValue(AVKey.TILE_URL_BUILDER, new URLBuilder());
+
+        return new LevelSet(params);
+    }
+
+    private static class URLBuilder implements TileUrlBuilder
+    {
+
+        @Override
+        public URL getURL(Tile tile, String altImageFormat) throws MalformedURLException
+        {
+            StringBuilder sb = new StringBuilder(tile.getLevel().getService());
+            if (sb.lastIndexOf("?") != sb.length() - 1)
+            {
+                sb.append("?");
+            }
+            sb.append("format=jpg");
+            sb.append("&f=image");
+            sb.append("&size=");
+            sb.append(tile.getLevel().getTileWidth());
+            sb.append(",");
+            sb.append(tile.getLevel().getTileHeight());
+
+            Sector s = tile.getSector();
+            sb.append("&bbox=");
+            sb.append(s.getMinLongitude().getDegrees());
+            sb.append(",");
+            sb.append(s.getMinLatitude().getDegrees());
+            sb.append(",");
+            sb.append(s.getMaxLongitude().getDegrees());
+            sb.append(",");
+            sb.append(s.getMaxLatitude().getDegrees());
+
+            return new java.net.URL(sb.toString());
+        }
+    }
+
+    @Override
+    public String toString()
+    {
+        return "World Imagery";
+    }
+}