package com.ruoyi.utils.gis;
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import org.gavaghan.geodesy.*;
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import java.awt.geom.Point2D;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.List;
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public class GisUtil {
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public static GeodeticCalculator geodeticCalculator = new GeodeticCalculator();
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/**
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* 根据经纬度，计算两点间的距离
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*
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* @param From 第一个点的经纬度
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* @param To 第二个点的经纬度
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* @return 返回距离 单位米
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*/
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public static double getDistance(double[] From, double[] To) {
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double longitudeFrom = From[0];
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double latitudeFrom = From[1];
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double longitudeTo = To[0];
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double latitudeTo = To[1];
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GlobalCoordinates source = new GlobalCoordinates(latitudeFrom, longitudeFrom);
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GlobalCoordinates target = new GlobalCoordinates(latitudeTo, longitudeTo);
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return geodeticCalculator.calculateGeodeticCurve(Ellipsoid.WGS84, source, target).getEllipsoidalDistance();
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}
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public static double getDistance(Double[] From, Double[] To) {
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double longitudeFrom = From[0];
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double latitudeFrom = From[1];
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double longitudeTo = To[0];
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double latitudeTo = To[1];
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GlobalCoordinates source = new GlobalCoordinates(latitudeFrom, longitudeFrom);
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GlobalCoordinates target = new GlobalCoordinates(latitudeTo, longitudeTo);
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return geodeticCalculator.calculateGeodeticCurve(Ellipsoid.WGS84, source, target).getEllipsoidalDistance();
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}
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/**
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* 根据经纬度，计算两点间的距离
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*
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* @param longitudeFrom 第一个点的经度
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* @param latitudeFrom 第一个点的纬度
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* @param longitudeTo 第二个点的经度
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* @param latitudeTo 第二个点的纬度
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* @return 返回距离 单位米
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*/
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public static double getDistance(double longitudeFrom, double latitudeFrom, double longitudeTo, double latitudeTo) {
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GlobalCoordinates source = new GlobalCoordinates(latitudeFrom, longitudeFrom);
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GlobalCoordinates target = new GlobalCoordinates(latitudeTo, longitudeTo);
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return geodeticCalculator.calculateGeodeticCurve(Ellipsoid.WGS84, source, target).getEllipsoidalDistance();
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}
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/**
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* 计算从from到to方向的直线与正北方向夹角
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*
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* @param longitudeFrom 第一个点的经度
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* @param latitudeFrom 第一个点的纬度
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* @param longitudeTo 第二个点的经度
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* @param latitudeTo 第二个点的纬度
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* @return 返回角度
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*/
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public static double getNorthAngle(double longitudeFrom, double latitudeFrom, double longitudeTo, double latitudeTo) {
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GlobalPosition source = new GlobalPosition(latitudeFrom, longitudeFrom, 0);
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GlobalPosition target = new GlobalPosition(latitudeTo, longitudeTo, 0);
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return geodeticCalculator.calculateGeodeticMeasurement(Ellipsoid.WGS84, source, target).getAzimuth();
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}
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/**
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* @param camera 经度,纬度,高度 如:{125.097531, 46.60029, 120};
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* @param lookAt 经度,纬度,高度 如:{125.124731, 46.584808, 0};
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* @param viewAngle 相机可视角度 如:20
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* @param viewWidth 视域宽度 如:150
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* @return ptz 数组 如:[129.5355798969157, -2.5419097807416655, 23.3676043024458]
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*/
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public static double[] getCameraPTZ(double[] camera, double[] lookAt, double viewAngle, double viewWidth) {
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double p = 0, t = 0, z = 0;
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double distance = GisUtil.getDistance(camera[0], camera[1], lookAt[0], lookAt[1]);
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double northAngle = GisUtil.getNorthAngle(camera[0], camera[1], lookAt[0], lookAt[1]);
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double height = camera[2];
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p = northAngle;
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t = Angle.toDegrees(Math.atan(height / distance)) * -1+360;
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z = distance * Math.tan(viewAngle / 2) * 2 / viewWidth;
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/* p = new BigDecimal(p).setScale(1,BigDecimal.ROUND_HALF_UP).doubleValue();
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t = new BigDecimal(t).setScale(1,BigDecimal.ROUND_HALF_UP).doubleValue();
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z = new BigDecimal(z).setScale(1,BigDecimal.ROUND_HALF_UP).doubleValue();*/
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return new double[]{p, t, z};
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}
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/**
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* 根据开始坐标点，角度，计算结束点坐标
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* @param startGlobalCoordinates
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* @param startAngle 方向（以起点为中心）
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* @param distance 距离（单位：m）
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* @return
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*/
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public static GlobalCoordinates getGlobalCoordinates(GlobalCoordinates startGlobalCoordinates, double startAngle, double distance){
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return new GeodeticCalculator().calculateEndingGlobalCoordinates(Ellipsoid.WGS84, startGlobalCoordinates, startAngle, distance);
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}
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/**
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* 判断当前位置是否在多边形区域内
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* @param orderLocation 当前点
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* @param partitionLocation 区域顶点
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* @return
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*/
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public static boolean isInPolygon(Point orderLocation, List<Point> partitionLocation){
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double p_x =orderLocation.getLongitude();
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double p_y =orderLocation.getLatitude();
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Point2D.Double point = new Point2D.Double(p_x, p_y);
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List<Point2D.Double> pointList= new ArrayList<Point2D.Double>();
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for (Point points : partitionLocation){
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double polygonPoint_x=points.getLongitude();
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double polygonPoint_y=points.getLatitude();
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Point2D.Double polygonPoint = new Point2D.Double(polygonPoint_x,polygonPoint_y);
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pointList.add(polygonPoint);
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}
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return IsPtInPoly(point,pointList);
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}
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/**
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* 判断点是否在多边形内，如果点位于多边形的顶点或边上，也算做点在多边形内，直接返回true
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* @param point 检测点
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* @param pts 多边形的顶点
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* @return 点在多边形内返回true,否则返回false
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*/
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public static boolean IsPtInPoly(Point2D.Double point, List<Point2D.Double> pts){
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int N = pts.size();
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boolean boundOrVertex = true; //如果点位于多边形的顶点或边上，也算做点在多边形内，直接返回true
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int intersectCount = 0;//cross points count of x
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double precision = 2e-10; //浮点类型计算时候与0比较时候的容差
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Point2D.Double p1, p2;//neighbour bound vertices
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Point2D.Double p = point; //当前点
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p1 = pts.get(0);//left vertex
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for(int i = 1; i <= N; ++i){//check all rays
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if(p.equals(p1)){
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return boundOrVertex;//p is an vertex
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}
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p2 = pts.get(i % N);
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if(p.x < Math.min(p1.x, p2.x) || p.x > Math.max(p1.x, p2.x)){
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p1 = p2;
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continue;
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}
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if(p.x > Math.min(p1.x, p2.x) && p.x < Math.max(p1.x, p2.x)){
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if(p.y <= Math.max(p1.y, p2.y)){
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if(p1.x == p2.x && p.y >= Math.min(p1.y, p2.y)){
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return boundOrVertex;
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}
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if(p1.y == p2.y){
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if(p1.y == p.y){
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return boundOrVertex;
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}else{//before ray
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++intersectCount;
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}
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}else{
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double xinters = (p.x - p1.x) * (p2.y - p1.y) / (p2.x - p1.x) + p1.y;
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if(Math.abs(p.y - xinters) < precision){
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return boundOrVertex;
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}
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if(p.y < xinters){
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++intersectCount;
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}
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}
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}
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}else{
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if(p.x == p2.x && p.y <= p2.y){
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Point2D.Double p3 = pts.get((i+1) % N);
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if(p.x >= Math.min(p1.x, p3.x) && p.x <= Math.max(p1.x, p3.x)){
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++intersectCount;
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}else{
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intersectCount += 2;
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}
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}
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}
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p1 = p2;
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}
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if(intersectCount % 2 == 0){//偶数在多边形外
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return false;
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} else { //奇数在多边形内
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return true;
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}
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}
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public static void main(String[] args) {
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// 125.097531,46.60029, 125.124731,46.584808
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//相机位置
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/* double[] camera = {125.146964331147,46.5580925811216,102};//经度,纬度,高度
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//看向的位置
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double[] lookAt = {125.155449,46.555108,0};//经度,纬度,高度
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double viewAngle = 20;//相机可视角度
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double viewWidth = 150;//相机视域宽度
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double[] ptz = GisUtil.getCameraPTZ(camera, lookAt, viewAngle, viewWidth);
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System.out.println("ptz:" + Arrays.toString(ptz));*/
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// double[] camera = {125.153903999999997,46.5600799999999992,258.430000000000007};
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GlobalCoordinates camera = new GlobalCoordinates(46.5600799999999992,125.153903999999997);
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double p = 212.70155;
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double distance = 4048.886568114861;
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GlobalCoordinates point = getGlobalCoordinates(camera, p, distance);
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System.out.println("point:");
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System.out.println("lon:"+point.getLongitude());
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System.out.println("lat:"+point.getLatitude());
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}
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}
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