net.ymate.platform.commons.util.GeoPoint Maven / Gradle / Ivy
/*
* Copyright 2007-2020 the original author or authors.
*
* Licensed 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 net.ymate.platform.commons.util;
import org.apache.commons.lang3.builder.EqualsBuilder;
import org.apache.commons.lang3.builder.HashCodeBuilder;
import java.awt.geom.Point2D;
import java.io.Serializable;
/**
* 地理坐标点
*
* 坐标系转换代码参考自:
*
* https://blog.csdn.net/a13570320979/article/details/51366355
*
* https://blog.csdn.net/m0_37738114/article/details/80452485
*
* @author 刘镇 ([email protected]) on 2016/12/12 15:27
*/
public class GeoPoint implements Serializable {
/**
* 经度, X
*/
private double longitude;
/**
* 纬度, Y
*/
private double latitude;
/**
* 坐标点类型, 默认为: WGS84
*
* @since 2.0.6
*/
private GeoPointType type;
public GeoPoint() {
}
/**
* 构造器
*
* @param longitude 经度
* @param latitude 纬度
* @param type 坐标点类型, 默认为WGS84
* @since 2.0.6
*/
public GeoPoint(double longitude, double latitude, GeoPointType type) {
this.longitude = longitude;
this.latitude = latitude;
this.type = type == null ? GeoPointType.WGS84 : type;
}
public GeoPoint(double longitude, double latitude) {
this.longitude = longitude;
this.latitude = latitude;
this.type = GeoPointType.WGS84;
}
public double getLongitude() {
return longitude;
}
public void setLongitude(double longitude) {
this.longitude = longitude;
}
public double getLatitude() {
return latitude;
}
public void setLatitude(double latitude) {
this.latitude = latitude;
}
public GeoPointType getType() {
return type;
}
public void setType(GeoPointType type) {
this.type = type;
}
public Point2D.Double toPoint2D() {
return new Point2D.Double(longitude, latitude);
}
/**
* @return 将当前坐标点转换为火星坐标
* @since 2.0.6
*/
public GeoPoint toGcj02() {
GeoPoint point;
switch (type) {
case BD09:
point = bd09ToGcj02();
break;
case WGS84:
point = toWgs84();
break;
default:
point = transform();
}
return point;
}
/**
* @return 将当前坐标点转换为GPS原始坐标
* @since 2.0.6
*/
public GeoPoint toWgs84() {
GeoPoint point;
switch (type) {
case BD09:
point = bd09ToWgs84();
break;
case GCJ02:
point = gcj02ToWgs84();
break;
default:
point = new GeoPoint(longitude, latitude);
}
return point;
}
/**
* @return 将当前坐标点转换为百度坐标
* @since 2.0.6
*/
public GeoPoint toBd09() {
GeoPoint point;
switch (type) {
case GCJ02:
point = gcj02ToBd09();
break;
case WGS84:
point = wgs84ToBd09();
break;
default:
point = new GeoPoint(longitude, latitude, GeoPointType.BD09);
}
return point;
}
/**
* @return 保留小数点后六位
* @since 2.0.6
*/
public GeoPoint retain6() {
return new GeoPoint(Double.parseDouble(String.format("%.6f", longitude)), Double.parseDouble(String.format("%.6f", latitude)), type);
}
/**
* @return 是否超出中国范围
* @since 2.0.6
*/
public boolean notInChina() {
if (longitude < 72.004 || longitude > 137.8347) {
return true;
}
return latitude < 0.8293 || latitude > 55.8271;
}
private double transformLat() {
double x = longitude - 105.0;
double y = latitude - 35.0;
//
double ret = -100.0 + 2.0 * x + 3.0 * y + 0.2 * y * y + 0.1 * x * y + 0.2 * Math.sqrt(Math.abs(x));
ret += (20.0 * Math.sin(6.0 * x * Math.PI) + 20.0 * Math.sin(2.0 * x * Math.PI)) * 2.0 / 3.0;
ret += (20.0 * Math.sin(y * Math.PI) + 40.0 * Math.sin(y / 3.0 * Math.PI)) * 2.0 / 3.0;
ret += (160.0 * Math.sin(y / 12.0 * Math.PI) + 320 * Math.sin(y * Math.PI / 30.0)) * 2.0 / 3.0;
return ret;
}
private double transformLon() {
double x = longitude - 105.0;
double y = latitude - 35.0;
//
double ret = 300.0 + x + 2.0 * y + 0.1 * x * x + 0.1 * x * y + 0.1 * Math.sqrt(Math.abs(x));
ret += (20.0 * Math.sin(6.0 * x * Math.PI) + 20.0 * Math.sin(2.0 * x * Math.PI)) * 2.0 / 3.0;
ret += (20.0 * Math.sin(x * Math.PI) + 40.0 * Math.sin(x / 3.0 * Math.PI)) * 2.0 / 3.0;
ret += (150.0 * Math.sin(x / 12.0 * Math.PI) + 300.0 * Math.sin(x / 30.0 * Math.PI)) * 2.0 / 3.0;
return ret;
}
/**
* @return WGS84 --> GCJ-02
*/
private GeoPoint transform() {
if (notInChina()) {
return new GeoPoint(longitude, latitude);
}
double dLat = transformLat();
double dLon = transformLon();
double radLat = GeoUtils.rad(latitude);
double magic = Math.sin(radLat);
magic = 1 - GeoUtils.EE * magic * magic;
double sqrtMagic = Math.sqrt(magic);
dLat = (dLat * 180.0) / ((GeoUtils.EARTH_RADIUS * (1 - GeoUtils.EE)) / (magic * sqrtMagic) * Math.PI);
dLon = (dLon * 180.0) / (GeoUtils.EARTH_RADIUS / sqrtMagic * Math.cos(radLat) * Math.PI);
double mgLat = latitude + dLat;
double mgLon = longitude + dLon;
//
return new GeoPoint(mgLon, mgLat, GeoPointType.GCJ02);
}
/**
* @return GCJ-02 --> WGS84
*/
private GeoPoint gcj02ToWgs84() {
GeoPoint point = transform();
return new GeoPoint(longitude * 2 - point.longitude, latitude * 2 - point.latitude);
}
/**
* @return GCJ-02 --> BD09
*/
private GeoPoint gcj02ToBd09() {
double z = Math.sqrt(longitude * longitude + latitude * latitude) + 0.00002 * Math.sin(latitude * Math.PI);
double theta = Math.atan2(latitude, longitude) + 0.000003 * Math.cos(longitude * Math.PI);
return new GeoPoint(z * Math.cos(theta) + 0.0065, z * Math.sin(theta) + 0.006, GeoPointType.BD09);
}
/**
* @return BD09 --> GCJ-02
*/
private GeoPoint bd09ToGcj02() {
double x = longitude - 0.0065, y = latitude - 0.006;
double z = Math.sqrt(x * x + y * y) - 0.00002 * Math.sin(y * Math.PI);
double theta = Math.atan2(y, x) - 0.000003 * Math.cos(x * Math.PI);
return new GeoPoint(z * Math.cos(theta), z * Math.sin(theta), GeoPointType.GCJ02);
}
/**
* @return WGS84 --> BD09
*/
private GeoPoint wgs84ToBd09() {
return transform().toBd09();
}
/**
* @return BD09 --> WGS84
*/
private GeoPoint bd09ToWgs84() {
return bd09ToGcj02().toWgs84();
}
/**
* 算法代码参考自：https://blog.csdn.net/xiejm2333/article/details/73297004
*
* @param point 坐标点
* @return 计算两点间的距离(米)
*/
public double distance(GeoPoint point) {
double lat1 = GeoUtils.rad(latitude);
double lat2 = GeoUtils.rad(point.latitude);
double diff = GeoUtils.rad(longitude) - GeoUtils.rad(point.longitude);
return Math.round((2 * Math.asin(Math.sqrt(Math.pow(Math.sin((lat1 - lat2) / 2), 2) + Math.cos(lat1) * Math.cos(lat2) * Math.pow(Math.sin(diff / 2), 2)))) * GeoUtils.EARTH_RADIUS * 10000d) / 10000d;
}
/**
* @return 验证是否为合法有效的经纬度
*/
public boolean isValidCoordinate() {
// 经度: 180° >= x >= 0°
if (0.0 > longitude || 180.0 < longitude) {
return false;
}
// 纬度: 90° >= y >= 0°
return !(0.0 > latitude || 90.0 < latitude);
}
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
GeoPoint point = (GeoPoint) o;
return new EqualsBuilder()
.append(longitude, point.longitude)
.append(latitude, point.latitude)
.isEquals();
}
@Override
public int hashCode() {
return new HashCodeBuilder(17, 37)
.append(longitude)
.append(latitude)
.toHashCode();
}
@Override
public String toString() {
return String.format("GeoPoint{longitude=%s, latitude=%s, type=%s}", longitude, latitude, type);
}
}