java 判断坐标是否在多边形和圆形内工具类

import com.alibaba.fastjson.JSON;
import java.awt.geom.Point2D;
import java.util.ArrayList;
import java.util.List;

public class GisUtils {

    private static double EARTH_RADIUS = 6378.137;

    private static double rad(double d) {
        return d * Math.PI / 180.0;
    }

    private static double getDistance(double lat1, double lng1, double lat2, double lng2) {
        double radLat1 = rad(lat1);
        double radLat2 = rad(lat2);
        double a = radLat1 - radLat2;
        double b = rad(lng1) - rad(lng2);
        double s = 2 * Math.asin(Math.sqrt(Math.pow(Math.sin(a / 2), 2) +
                Math.cos(radLat1) * Math.cos(radLat2) * Math.pow(Math.sin(b / 2), 2)));
        s = s * EARTH_RADIUS;
        s = Math.round(s * 10000d) / 10000d;
        return s * 1000;
    }

    /**
     * 判断一个点是否在圆形区域内，单位米
     */
    public static boolean isInCircle(double lon,double lat,String circlePoint, String circleRadius) {
        Stri