gov/nasa/worldwind/globes/EarthElevationModel.java

   1 /*
   2 Copyright (C) 2001, 2006 United States Government
   3 as represented by the Administrator of the
   4 National Aeronautics and Space Administration.
   5 All Rights Reserved.
   6 */
   7 package gov.nasa.worldwind.globes;
   8
   9 import gov.nasa.worldwind.geom.*;
  10 import gov.nasa.worldwind.*;
  11
  12 /**
  13  * @author Tom Gaskins
  14  * @version $Id: EarthElevationModel.java 1984 2007-06-09 00:33:22Z tgaskins $
  15  */
  16 public class EarthElevationModel extends BasicElevationModel
  17 {
  18     private static double HEIGHT_OF_MT_EVEREST = 8850d; // meters
  19     private static double DEPTH_OF_MARIANAS_TRENCH = -11000d; // meters
  20
  21     public EarthElevationModel()
  22     {
  23         super(makeLevels(), DEPTH_OF_MARIANAS_TRENCH, HEIGHT_OF_MT_EVEREST);
  24         this.setNumExpectedValuesPerTile(22500);
  25     }
  26
  27     private static LevelSet makeLevels()
  28     {
  29         AVList params = new AVListImpl();
  30
  31         params.setValue(AVKey.TILE_WIDTH, 150);
  32         params.setValue(AVKey.TILE_HEIGHT, 150);
  33         params.setValue(AVKey.CACHE_NAME, "Earth/srtm30pluszip");
  34         params.setValue(AVKey.SERVICE, "http://worldwind25.arc.nasa.gov/wwelevation/wwelevation.aspx");
  35         params.setValue(AVKey.DATASET_NAME, "srtm30pluszip");
  36         params.setValue(AVKey.FORMAT_SUFFIX, ".bil");
  37         params.setValue(AVKey.NUM_LEVELS, 12);
  38         params.setValue(AVKey.NUM_EMPTY_LEVELS, 0);
  39         params.setValue(AVKey.LEVEL_ZERO_TILE_DELTA, new LatLon(Angle.fromDegrees(20d), Angle.fromDegrees(20d)));
  40         params.setValue(AVKey.SECTOR, Sector.FULL_SPHERE);
  41
  42         return new LevelSet(params);
  43     }
  44 }