X-Git-Url: https://git.mdrn.pl/pylucene.git/blobdiff_plain/a2e61f0c04805cfcb8706176758d1283c7e3a55c..aaeed5504b982cf3545252ab528713250aa33eed:/lucene-java-3.5.0/lucene/contrib/spatial/src/java/org/apache/lucene/spatial/geometry/FixedLatLng.java

diff --git a/lucene-java-3.5.0/lucene/contrib/spatial/src/java/org/apache/lucene/spatial/geometry/FixedLatLng.java b/lucene-java-3.5.0/lucene/contrib/spatial/src/java/org/apache/lucene/spatial/geometry/FixedLatLng.java
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+++ b/lucene-java-3.5.0/lucene/contrib/spatial/src/java/org/apache/lucene/spatial/geometry/FixedLatLng.java
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+/**
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.lucene.spatial.geometry;
+
+/**
+ * <p><font color="red"><b>NOTE:</b> This API is still in
+ * flux and might change in incompatible ways in the next
+ * release.</font>
+ */
+public class FixedLatLng extends LatLng {
+  public static final double SCALE_FACTOR=1000000;
+  public static final int SCALE_FACTOR_INT=1000000;
+  
+  private int lat, lng;
+  private boolean normalized;
+  
+  public FixedLatLng(int lat, int lng) {
+    setLat(lat);
+    setLng(lng);
+  }
+  
+  public FixedLatLng(LatLng ll) {
+    this.lat=ll.getFixedLat();
+    this.lng=ll.getFixedLng();
+  }
+  
+  protected void setLat(int lat) {
+    if (lat>90*SCALE_FACTOR || lat<-90*SCALE_FACTOR) {
+      throw new IllegalArgumentException("Illegal lattitude");
+    }
+    this.lat=lat;
+  }
+
+  protected void setLng(int lng) {
+    this.lng=lng;
+  }
+  
+  public static double fixedToDouble(int fixed) {
+    return (fixed)/SCALE_FACTOR;
+  }
+  
+  public static int doubleToFixed(double d) {
+    return (int)(d*SCALE_FACTOR);
+  }
+  
+  @Override
+  public LatLng copy() {
+    return new FixedLatLng(this);
+  }
+
+  @Override
+  public int getFixedLat() {
+    return lat;
+  }
+
+  @Override
+  public int getFixedLng() {
+    return lng;
+  }
+
+  @Override
+  public double getLat() {
+    return fixedToDouble(lat);
+  }
+
+  @Override
+  public double getLng() {
+    return fixedToDouble(lng);
+  }
+
+  @Override
+  public boolean isFixedPoint() {
+    return true;
+  }
+
+  @Override
+  public FixedLatLng toFixed() {
+    return this;
+  }
+
+  @Override
+  public FloatLatLng toFloat() {
+    return new FloatLatLng(this);
+  }
+
+  @Override
+  public boolean isNormalized() {
+    return 
+      normalized || (
+          (lng>=-180*SCALE_FACTOR_INT) &&
+          (lng<=180*SCALE_FACTOR_INT)
+          );
+  }
+
+  @Override
+  public LatLng normalize() {
+    if (isNormalized()) return this;
+    
+    int delta=0;
+    if (lng<0) delta=360*SCALE_FACTOR_INT;
+    if (lng>=0) delta=-360*SCALE_FACTOR_INT;
+    
+    int newLng=lng;
+    while (newLng<=-180*SCALE_FACTOR_INT || newLng>=180*SCALE_FACTOR_INT) {
+      newLng+=delta;
+    }
+    
+    FixedLatLng ret=new FixedLatLng(lat, newLng);
+    ret.normalized=true;
+    return ret;
+  }
+  
+  @Override
+  public LatLng calculateMidpoint(LatLng other) {
+    return new FixedLatLng(
+        (lat+other.getFixedLat())/2,
+        (lng+other.getFixedLng())/2);
+  }
+
+  @Override
+  public int hashCode() {
+    final int prime = 31;
+    int result = prime + lat;
+    result = prime * result + lng;
+    result = prime * result + (normalized ? 1231 : 1237);
+    return result;
+  }
+
+  @Override
+  public boolean equals(Object obj) {
+    if (this == obj)
+      return true;
+    if (getClass() != obj.getClass())
+      return false;
+    FixedLatLng other = (FixedLatLng) obj;
+    if (lat != other.lat)
+      return false;
+    if (lng != other.lng)
+      return false;
+    if (normalized != other.normalized)
+      return false;
+    return true;
+  }
+  
+}