Signed-off-by: lixiangrong <lixiangrong@pxene.com>

src/main/java/osc/git/eh3/utils/GeoHash2.java

@@ -1,116 +0,0 @@
-package osc.git.eh3.utils;
-
-import java.util.BitSet;
-import java.util.HashMap;
-
-public class GeoHash2 {
-
-	private static int numbits = 6 * 5;
-	final static char[] digits = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'j', 'k', 'm', 'n',
-			'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z' };
-
-	final static HashMap<Character, Integer> lookup = new HashMap<Character, Integer>();
-
-	static {
-		int i = 0;
-		for (char c : digits)
-			lookup.put(c, i++);
-	}
-
-	public static void main(String[] args) throws Exception {
-
-		double lon1 = 109.014520;
-		double lat1 = 34.236080;
-		System.out.println(new GeoHash2().encode(lat1, lon1));
-
-	}
-
-	public double[] decode(String geohash) {
-		StringBuilder buffer = new StringBuilder();
-		for (char c : geohash.toCharArray()) {
-
-			int i = lookup.get(c) + 32;
-			buffer.append(Integer.toString(i, 2).substring(1));
-		}
-
-		BitSet lonset = new BitSet();
-		BitSet latset = new BitSet();
-
-		// even bits
-		int j = 0;
-		for (int i = 0; i < numbits * 2; i += 2) {
-			boolean isSet = false;
-			if (i < buffer.length())
-				isSet = buffer.charAt(i) == '1';
-			lonset.set(j++, isSet);
-		}
-
-		// odd bits
-		j = 0;
-		for (int i = 1; i < numbits * 2; i += 2) {
-			boolean isSet = false;
-			if (i < buffer.length())
-				isSet = buffer.charAt(i) == '1';
-			latset.set(j++, isSet);
-		}
-
-		double lon = decode(lonset, -180, 180);
-		double lat = decode(latset, -90, 90);
-
-		return new double[] { lat, lon };
-	}
-
-	private double decode(BitSet bs, double floor, double ceiling) {
-		double mid = 0;
-		for (int i = 0; i < bs.length(); i++) {
-			mid = (floor + ceiling) / 2;
-			if (bs.get(i))
-				floor = mid;
-			else
-				ceiling = mid;
-		}
-		return mid;
-	}
-
-	public String encode(double lat, double lon) {
-		BitSet latbits = getBits(lat, -90, 90);
-		BitSet lonbits = getBits(lon, -180, 180);
-		StringBuilder buffer = new StringBuilder();
-		for (int i = 0; i < numbits; i++) {
-			buffer.append((lonbits.get(i)) ? '1' : '0');
-			buffer.append((latbits.get(i)) ? '1' : '0');
-		}
-		return base32(Long.parseLong(buffer.toString(), 2));
-	}
-
-	private BitSet getBits(double lat, double floor, double ceiling) {
-		BitSet buffer = new BitSet(numbits);
-		for (int i = 0; i < numbits; i++) {
-			double mid = (floor + ceiling) / 2;
-			if (lat >= mid) {
-				buffer.set(i);
-				floor = mid;
-			} else {
-				ceiling = mid;
-			}
-		}
-		return buffer;
-	}
-
-	public static String base32(long i) {
-		char[] buf = new char[65];
-		int charPos = 64;
-		boolean negative = (i < 0);
-		if (!negative)
-			i = -i;
-		while (i <= -32) {
-			buf[charPos--] = digits[(int) (-(i % 32))];
-			i /= 32;
-		}
-		buf[charPos] = digits[(int) (-i)];
-
-		if (negative)
-			buf[--charPos] = '-';
-		return new String(buf, charPos, (65 - charPos));
-	}
-}