Use SRTM 1deg data from NASA servers

[GpsPrune.git] / src / tim / prune / function / srtm / TileFinder.java

diff --git a/src/tim/prune/function/srtm/TileFinder.java b/src/tim/prune/function/srtm/TileFinder.java
deleted file mode 100644 (file)
index 60a9479..0000000
--- a/src/tim/prune/function/srtm/TileFinder.java
+++ /dev/null
@@ -1,82 +0,0 @@
-package tim.prune.function.srtm;
-
-import java.io.InputStream;
-import java.net.MalformedURLException;
-import java.net.URL;
-import java.util.ArrayList;
-
-
-/**
- * Class to get the URLs of the SRTM tiles
- * using the srtmtiles.dat file
- */
-public abstract class TileFinder
-{
-       /** URL prefix for all tiles */
-       private static final String URL_PREFIX = "https://dds.cr.usgs.gov/srtm/version2_1/SRTM3/";
-       /** Directory names for each continent */
-       private static final String[] CONTINENTS = {"", "Eurasia", "North_America", "Australia",
-               "Islands", "South_America", "Africa"};
-
-
-       /**
-        * Get the Urls for the given list of tiles
-        * @param inTiles list of Tiles to get
-        * @return array of URLs
-        */
-       public static URL[] getUrls(ArrayList<SrtmTile> inTiles)
-       {
-               if (inTiles == null || inTiles.size() < 1) {return null;}
-               URL[] urls = new URL[inTiles.size()];
-               // Read dat file into array
-               byte[] lookup = readDatFile();
-               for (int t=0; t<inTiles.size(); t++)
-               {
-                       SrtmTile tile = inTiles.get(t);
-                       // Get byte from lookup array
-                       int idx = (tile.getLatitude() + 59)*360 + (tile.getLongitude() + 180);
-                       try
-                       {
-                               int dir = lookup[idx];
-                               if (dir > 0) {
-                                       try {
-                                               urls[t] = new URL(URL_PREFIX + CONTINENTS[dir] + "/" + tile.getTileName());
-                                       } catch (MalformedURLException e) {} // ignore error, url stays null
-                               }
-                       } catch (ArrayIndexOutOfBoundsException e) {} // ignore error, url stays null
-               }
-               return urls;
-       }
-
-       /**
-        * Read the dat file and get the contents
-        * @return byte array containing file contents
-        */
-       private static byte[] readDatFile()
-       {
-               InputStream in = null;
-               try
-               {
-                       // Need absolute path to dat file
-                       in = TileFinder.class.getResourceAsStream("/tim/prune/function/srtm/srtmtiles.dat");
-                       if (in != null)
-                       {
-                               byte[] buffer = new byte[in.available()];
-                               in.read(buffer);
-                               in.close();
-                               return buffer;
-                       }
-               }
-               catch (java.io.IOException e) {
-                       System.err.println("Exception trying to read srtmtiles.dat : " + e.getMessage());
-               }
-               finally
-               {
-                       try {
-                               in.close();
-                       }
-                       catch (Exception e) {} // ignore
-               }
-               return null;
-       }
-}