package com.dji.sample.patches.utils;
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import com.dji.sample.patches.model.entity.LotInfo;
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import org.geotools.geometry.jts.JTSFactoryFinder;
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import org.locationtech.jts.geom.*;
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import org.locationtech.jts.io.ParseException;
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import org.locationtech.jts.io.WKTReader;
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import org.locationtech.jts.operation.buffer.BufferOp;
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import org.locationtech.jts.simplify.TopologyPreservingSimplifier;
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import java.util.*;
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import java.util.concurrent.atomic.AtomicInteger;
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import java.util.stream.Collectors;
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/**
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* @PROJECT_NAME: drone
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* @DESCRIPTION:
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* @USER: aix
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* @DATE: 2024/3/25 10:35
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*/
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public class GeoToolsUtil {
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/**
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* 获取中心点位置
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*
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* @param geometry Geometry
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* @return
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*/
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public static Coordinate getCentro(Geometry geometry) {
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return geometry.getCentroid().getCoordinate();
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}
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/**
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* 获取4个点的经纬度
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*
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* @param geometry Geometry
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* @return
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*/
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public static List<Coordinate> getExtremePoints(Geometry geometry) {
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List<Coordinate> extremePoints = new ArrayList<>();
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Envelope envelope = geometry.getEnvelopeInternal();
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// 获取4个点经纬度
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extremePoints.add(new Coordinate(envelope.getMinX(), envelope.getMaxY()));
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extremePoints.add(new Coordinate(envelope.getMinX(), envelope.getMinY()));
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extremePoints.add(new Coordinate(envelope.getMaxX(), envelope.getMinY()));
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extremePoints.add(new Coordinate(envelope.getMaxX(), envelope.getMaxY()));
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return extremePoints;
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}
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public static Coordinate[] sortCoordinatesByNearestDistance(Coordinate[] coordinates) {
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// 将数组转换为List以便操作
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List<Coordinate> coordinateList = new ArrayList<>(Arrays.asList(coordinates));
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// 排序后的坐标列表
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List<Coordinate> sortedCoordinates = new ArrayList<>();
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// 如果列表不为空，开始排序
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if (!coordinateList.isEmpty()) {
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// 将第一个点添加到排序列表中
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sortedCoordinates.add(coordinateList.remove(0));
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// 循环处理剩余的点
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while (!coordinateList.isEmpty()) {
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double minDistance = Double.MAX_VALUE;
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Coordinate nearest = null;
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// 查找距离排序列表中最后一个点最近的点
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for (Coordinate c : coordinateList) {
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double distance = DistanceCalculator.distance(sortedCoordinates.get(sortedCoordinates.size() - 1), c);
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if (distance < minDistance) {
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minDistance = distance;
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nearest = c;
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}
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}
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// 将找到的最近的点添加到排序列表中，并从原始列表中移除它
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sortedCoordinates.add(nearest);
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coordinateList.remove(nearest);
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}
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}
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return sortedCoordinates.toArray(new Coordinate[0]);
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}
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/**
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* 获取拐点坐标(替换上面获取四个航点坐标方法)
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*
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* @return
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*/
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public static List<Coordinate> getSimplifyPolygons(Geometry originalPolygon) {
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List coordinatesList = new ArrayList();
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// 应用抽稀算法，这里使用TopologyPreservingSimplifier作为示例
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double distanceTolerance = 10.0; // 抽稀的容忍度，根据需要调整
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Geometry simplifiedGeometry = TopologyPreservingSimplifier.simplify(originalPolygon, distanceTolerance);
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// 转换回Polygon类型（如果需要）
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Polygon simplifiedPolygon = (Polygon) simplifiedGeometry;
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// 获取简化后的多边形的坐标序列
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Coordinate[] coordinates = simplifiedPolygon.getCoordinates();
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// 使用自定义Comparator对数组进行排序
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// Arrays.sort(coordinates, Comparator.comparing(Coordinate::getX).thenComparing(Coordinate::getY));
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// 假设第一个点是起始点
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// Coordinate startPoint = coordinates[0];
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//
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// // 使用自定义Comparator对数组进行排序，根据与startPoint的距离升序排序
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// Arrays.sort(coordinates, Comparator.comparingDouble(c -> DistanceCalculator.distance(startPoint, c)));
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Coordinate[] newCoord = sortCoordinatesByNearestDistance(coordinates);
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// 遍历坐标数组，打印每个坐标点
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for (Coordinate coord : newCoord) {
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coordinatesList.add(coord);
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}
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// 使用Set去除重复项
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Set<Coordinate> set = new HashSet<>(coordinatesList);
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// 将Set转回List
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List<Coordinate> uniqueCoordinates = new ArrayList<>(set);
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return uniqueCoordinates;
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}
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public static int getSimplifyPolygonsNum(Geometry polygon) {
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// 使用 TopologyPreservingSimplifier 进行抽稀
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double distanceTolerance = 1.0; // 设置抽稀的容忍度，根据实际需要调整
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Geometry simplifiedPolygon = TopologyPreservingSimplifier.simplify(polygon, distanceTolerance);
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return simplifiedPolygon.getNumPoints();
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}
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// 将度转换为弧度
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public static double toRadians(double degrees) {
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return degrees * Math.PI / 180.0;
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}
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// 计算两点间的航向角
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public static double bearing(double lat1, double lon1, double lat2, double lon2) {
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double lat1Rad = toRadians(lat1);
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double lat2Rad = toRadians(lat2);
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double deltaLonRad = toRadians(lon2 - lon1);
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double y = Math.sin(deltaLonRad) * Math.cos(lat2Rad);
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double x = Math.cos(lat1Rad) * Math.sin(lat2Rad) -
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Math.sin(lat1Rad) * Math.cos(lat2Rad) * Math.cos(deltaLonRad);
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double bearing = Math.atan2(y, x);
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// 将结果转换为度
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return Math.toDegrees(bearing);
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}
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/**
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* 航线点排序
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*
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* @return
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*/
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public static List<PointPO> getRoutePointOrder(List<LotInfo> list, double airportLat, double airportLon) {
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List<Coordinate> centros = new ArrayList<>();
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List<List<Coordinate>> extremePoints = new ArrayList<>();
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AtomicInteger numSize = new AtomicInteger();
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for (LotInfo patche : list) {
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String wkt = patche.getDkfw();
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// 解析WKT字符串为多边形
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WKTReader wktReader = new WKTReader(JTSFactoryFinder.getGeometryFactory());
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Geometry polygon = null;
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try {
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polygon = wktReader.read(wkt);
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} catch (ParseException e) {
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throw new RuntimeException(e);
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}
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// 开始封装中心点坐标
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Coordinate coordinateCentro = getCentro(polygon);
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double distance = DistanceCalculator.calculateDistance(airportLat, airportLon, coordinateCentro.y, coordinateCentro.x);
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// 机场范围，操作机场范围将不生成
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if (distance * 1000 > 7000) {
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continue;
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}
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centros.add(coordinateCentro);
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// 开始封装图斑4个航线
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// List<Coordinate> coordinatePointList = getExtremePoints(polygon);
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// 抽稀拐点
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List<Coordinate> coordinatePointList = getSimplifyPolygons(polygon);
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extremePoints.add(coordinatePointList);
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// points.put(coordinateCentro, coordinatePointList);
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// 保存稀释拐点之后总数量
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numSize.set(numSize.get() + coordinatePointList.size());
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}
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// 开始排序
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Coordinate[] coordinates = new Coordinate[centros.size() + 1];
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List<Coordinate> coordinateList = new ArrayList<>();
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coordinates[0] = new Coordinate(airportLon, airportLat); //第一个为机场经纬度
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coordinateList.add(new Coordinate(airportLon, airportLat)); //第一个为机场经纬度)
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for (int i = 1; i < centros.size() + 1; i++) {
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coordinates[i] = centros.get(i - 1);
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coordinateList.add(centros.get(i - 1));
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}
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// 方案一：一个图斑按4个航点规划
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// // 对中心坐标数组进行排序
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// Coordinate[] retCoordinate = new Coordinate[coordinateList.size()];
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// Coordinate[] sortedCoordinates = DistanceCalculator.sortByDistance(coordinateList, airportLat, airportLon, 0, retCoordinate);
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//
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// // 开始拼接图斑点位--按中心坐标数组排序顺序
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// // 长度-3第一个起点只有一个点位
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// Coordinate[] retc = new Coordinate[sortedCoordinates.length * 4 - 3];
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// // 赋值起点
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// retc[0] = sortedCoordinates[0];
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// int i = 0;
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// for (Coordinate num : sortedCoordinates) {
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// List<Coordinate> coordinatePoints = points.get(num);
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// if (null != coordinatePoints) {
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// for (int j = 0; j < coordinatePoints.size(); j++) {
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// // 开始拼接
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// retc[i * coordinatePoints.size() + j - 3] = coordinatePoints.get(j);
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// }
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// }
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//
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// i++;
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// }
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//
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// return retc;
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// 方案二：抽稀，获取拐点
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Coordinate[] retCoordinate = new Coordinate[coordinateList.size()];
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List<Coordinate> oldCoordinateList = new ArrayList<>(coordinateList);
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// 获取中心点
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Coordinate[] sortedCoordinates = DistanceCalculator.sortByDistance(coordinateList, airportLat, airportLon, 0, retCoordinate);
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// 开始拼接图斑点位--按中心坐标数组排序顺序
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Coordinate[] retc = new Coordinate[numSize.get() + 1];
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List<PointPO> retcList = new ArrayList<>();
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// 赋值起点
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retc[0] = sortedCoordinates[0];
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retcList.add(PointPO.builder().index(0).coordinate(sortedCoordinates[0]).build());
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List<Integer> indexs = new ArrayList<>();
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// 拿排序前的索引index 根据排序前和排序后的结果匹对------》后期优化
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for (int i = 1; i < sortedCoordinates.length; i++) {
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Coordinate c1 = sortedCoordinates[i];
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for (int j = 1; j < oldCoordinateList.size(); j++) {
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Coordinate c2 = oldCoordinateList.get(j);
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if (c1.getX() == c2.getX() && c1.getY() == c2.getY()) {
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indexs.add(j - 1);
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}
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}
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}
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// 根据排序前的索引按顺序赋值
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int i = 0;
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for (Integer index : indexs) {
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for (Coordinate coordinate : extremePoints.get(index)) {
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i = i + 1;
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retc[i] = coordinate;
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retcList.add(PointPO.builder().index(index).coordinate(coordinate).centro(centros.get(index)).build());
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}
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}
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return retcList;
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}
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public static void main(String[] args) {
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//测试
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List<LotInfo> list = new ArrayList<>();
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list.add(LotInfo.builder().dkfw("POLYGON((115.866465564947 28.6344502965542, 115.86425430209 28.6357383285408, 115.864551734716 28.633120921433, 115.866977149064 28.6338435339976, 115.866465564947 28.6344502965542))").build());
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list.add(LotInfo.builder().dkfw("POLYGON((115.864006690605 28.6202713913694, 115.86002109342 28.6162025130492, 115.866374254306 28.6142037658042, 115.865912044006 28.6172001020759, 115.864006690605 28.6202713913694))").build());
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list.add(LotInfo.builder().dkfw("POLYGON((115.839366933455 28.6161999317332, 115.841288489469 28.6160843601496, 115.840931570318 28.6181544912247, 115.838147600941 28.618654178036, 115.839366933455 28.6161999317332))").build());
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list.add(LotInfo.builder().dkfw("POLYGON((115.857499052697 28.6784702230642, 115.859109158101 28.6762273976226, 115.863677723232 28.6766081113836, 115.862154868188 28.6790827508297, 115.857499052697 28.6784702230642))").build());
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list.add(LotInfo.builder().dkfw("POLYGON((115.834974056705 28.6659171428962, 115.833760531592 28.6634960413229, 115.832422084777 28.6624550271329, 115.829745191145 28.6631986086972, 115.831232354274 28.6608191476914, 115.833314382654 28.6603729987527, 115.835545127347 28.6618601618814, 115.837032290475 28.6639421902615, 115.834974056705 28.6659171428962))").build());
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list.add(LotInfo.builder().dkfw("POLYGON((115.885622116006 28.5766308429787, 115.883936664461 28.5771582901683, 115.883365593819 28.5752547213636, 115.883555950699 28.5740174016407, 115.88365112914 28.5724945465969, 115.885364341064 28.5721138328361, 115.886696839227 28.5725897250371, 115.887458266749 28.5736366878797, 115.886792017668 28.5753498998039, 115.885622116006 28.5766308429787))").build());
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list.add(LotInfo.builder().dkfw("POLYGON((115.857644341395 28.5750890964568, 115.857572957565 28.5729475815515, 115.858429563527 28.5728761977213, 115.859072017998 28.5738041875136, 115.859072017998 28.5748035611361, 115.857644341395 28.5750890964568))").build());
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list.add(LotInfo.builder().dkfw("POLYGON((115.912181587649 28.6231542087745, 115.912181587649 28.6215123806805, 115.915893546818 28.6212268453598, 115.916036314478 28.6231542087745, 115.912181587649 28.6231542087745))").build());
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list.add(LotInfo.builder().dkfw("POLYGON((115.842039042965 28.6314426646115, 115.840992080122 28.631252307731, 115.842324578286 28.6305860586493, 115.843181184248 28.6305860586493, 115.84403779021 28.6304908802091, 115.84394261177 28.6317281999322, 115.842039042965 28.6314426646115))").build());
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list.add(LotInfo.builder().dkfw("POLYGON((115.807011889796 28.623935465138, 115.805869748513 28.6224126100944, 115.810247956764 28.6220318963334, 115.809581707682 28.623935465138, 115.807011889796 28.623935465138))").build());
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// list.forEach(patche -> {
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// String wkt = patche.getDkfw();
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// // 解析WKT字符串为多边形
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// WKTReader wktReader = new WKTReader(JTSFactoryFinder.getGeometryFactory());
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// Geometry polygon = null;
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// try {
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// polygon = wktReader.read(wkt);
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// } catch (ParseException e) {
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// throw new RuntimeException(e);
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// }
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//
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// // 开始封装中心点坐标
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// Coordinate coordinateCentro = getCentro(polygon);
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//
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// // 开始封装图斑4个航线
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//// List<Coordinate> coordinatePointList = getExtremePoints(polygon);
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// List<Coordinate> coordinatePointList = getSimplifyPolygons(polygon);
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//
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//
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// });
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List<PointPO> pointPOS = getRoutePointOrder(list, 28.624514734, 115.856725497);
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for (PointPO c :
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pointPOS) {
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System.out.println(c);
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}
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}
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}
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