package com.panzhihua.common.utlis;
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import com.panzhihua.common.model.vos.grid.LatLngVO;
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import java.awt.geom.Point2D;
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import java.util.ArrayList;
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import java.util.List;
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public class LngLatUtils {
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public static boolean check(Point2D.Double _point, List<Point2D.Double> polygon)
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{
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java.awt.geom.GeneralPath peneralPath = new java.awt.geom.GeneralPath();
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Point2D.Double first = polygon.get(0);
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peneralPath.moveTo(first.x, first.y);
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polygon.remove(0);
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for(Point2D.Double d : polygon)
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{
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peneralPath.lineTo(d.x, d.y);
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}
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peneralPath.lineTo(first.x, first.y);
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peneralPath.closePath();
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return peneralPath.contains(_point);
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}
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/**
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*
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* @param bound 经纬度数组
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* @param pointlng 短
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* @param pointLat 长
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* @return
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*/
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public static boolean isInPolygon(List<LatLngVO> bound, double pointlng, double pointLat)
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{
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Point2D.Double point = new Point2D.Double(pointlng, pointLat);
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List<Point2D.Double> pointList = new ArrayList<>();
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for (int i = 0; i < bound.size(); i++) {
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pointList.add(new Point2D.Double(bound.get(i).getLng(), bound.get(i).getLat()));
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}
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return check(point, pointList);
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}
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/**
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* 从txt数据中获取经纬度
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* @param lngLatTxt
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* @return
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*/
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public static List<LatLngVO> getLatLngFromText(String lngLatTxt){
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List<LatLngVO> rtResult = new ArrayList<>();
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String str = lngLatTxt.replace("[[","");
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str=str.replace("]]","");
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String[] loca=str.split("],\\[");
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for (int i=0;i<loca.length;i++)
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{
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String[] loca1=loca[i].split(",");
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rtResult.add(new LatLngVO(Double.valueOf(loca1[0]), Double.valueOf(loca1[1])));
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}
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return rtResult;
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}
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public static void main(String[] args) {
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String latLngTxt = "[[104.066974,30.660293],[104.053394,30.658114],[104.059921,30.657076],[104.065231,30.657086]]";
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List<LatLngVO> latLngList = getLatLngFromText(latLngTxt);
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System.out.println(isInPolygon(latLngList, 104.063398, 30.657929));
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}
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}
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