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