利用mapbox计算一个圆形范围类的几何点

pom文件引入依赖jar包

<dependency>
    <groupId>com.mapbox.mapboxsdk</groupId>
    <artifactId>mapbox-sdk-turf</artifactId>
    <version>5.8.0</version>
</dependency>

定义dto

import lombok.Data;
import java.io.Serializable;
import java.util.List;

@Data
public class CoordinatesDTO implements Serializable {

    private static final long serialVersionUID = 1L;

    private List<List<List<Double>>> rings;

    private SpatialReferenceDTO spatialReference;
}

 

import lombok.Data;
import java.io.Serializable;

@Data
public class SpatialReferenceDTO implements Serializable {

    private static final long serialVersionUID = 1L;

    private Integer wkid;
}

封装的工具类方法

import cn.hutool.core.collection.CollectionUtil;
import com.mapbox.geojson.Point;
import com.mapbox.geojson.Polygon;
import com.mapbox.turf.TurfTransformation;
import lombok.extern.slf4j.Slf4j;

import java.math.BigDecimal;
import java.util.ArrayList;
import java.util.List;
import java.util.stream.Collectors;

/**
 * @Author: 夏威夷8080
 * @Date: 2021/7/9 13:24
 */
@Slf4j
public class GeometryUtil {
    public static CoordinatesDTO buildCoordinates(BigDecimal lng, BigDecimal lat, double radius) {
        Point TOWER_BRIDGE = Point.fromLngLat(lng.doubleValue(), lat.doubleValue());
        Polygon metres = TurfTransformation.circle(TOWER_BRIDGE, radius, "metres");
        List<List<Point>> coordinates = metres.coordinates();
        CoordinatesDTO coordinatesDTO = new CoordinatesDTO();
        if (CollectionUtil.isNotEmpty(coordinates)){
            List<Point> points = coordinates.get(0);
            List<List<Double>> collect = points.stream().map(point -> point.coordinates()).collect(Collectors.toList());
            List<List<List<Double>>> rings = new ArrayList<>();
            rings.add(collect);
            coordinatesDTO.setRings(rings);
            SpatialReferenceDTO spatialReference = new SpatialReferenceDTO();
            spatialReference.setWkid(4326);
            coordinatesDTO.setSpatialReference(spatialReference);
        }
        return coordinatesDTO;
    }
}

测试

public static void main(String[] args) {
    CoordinatesDTO coordinatesDTO = buildCoordinates(new BigDecimal(116.440488), new BigDecimal(39.947025), 12.05);
    System.out.println(JSONObject.toJSONString(coordinatesDTO));
}

返回的数据

{
    "rings": [
        [
            [
                116.440488,
                39.94713333424496
            ],
            [
                116.44050185089663,
                39.94713281258514
            ],
            [
                116.44051556840091,
                39.947131252629549
            ],
            [
                116.44052902040518,
                39.94712866940151
            ],
            [
                116.44054207735873,
                39.94712508777902
            ],
            [
                116.44055461351548,
                39.94712054225522
            ],
            [
                116.440566508145,
                39.947115076606177
            ],
            [
                116.44057764669518,
                39.947108743469289
            ],
            [
                116.44058792189549,
                39.94710160383635
            ],
            [
                116.44059723479013,
                39.94709372646619
            ],
            [
                116.44060549569086,
                39.94708518722241
            ],
            [
                116.4406126250409,
                39.94707606834284
            ],
            [
                116.44061855418096,
                39.94706645764749
            ],
            [
                116.44062322601063,
                39.94705644769277
            ],
            [
                116.4406265955381,
                39.94704613488022
            ],
            [
                116.44062863031354,
                39.947035618527937
            ],
            [
                116.44062931074156,
                39.94702499991421
            ],
            [
                116.44062863026989,
                39.947014381302157
            ],
            [
                116.44062659545249,
                39.94700386495475
            ],
            [
                116.44062322588631,
                39.94699355215012
            ],
            [
                116.44061855402274,
                39.94698354220607
            ],
            [
                116.44061262485482,
                39.946973931523718
            ],
            [
                116.44060549548412,
                39.946964812658979
            ],
            [
                116.44059723457065,
                39.94695627343129
            ],
            [
                116.44058792167172,
                39.946948396077868
            ],
            [
                116.44057764647568,
                39.94694125646166
            ],
            [
                116.44056650793826,
                39.94693492334087
            ],
            [
                116.44055461332943,
                39.946929457706648
            ],
            [
                116.4405420772005,
                39.94692491219584
            ],
            [
                116.44052902028084,
                39.946921330584029
            ],
            [
                116.44051556831526,
                39.94691874736391
            ],
            [
                116.44050185085297,
                39.94691718741321
            ],
            [
                116.440488,
                39.94691666575503
            ],
            [
                116.44047414914705,
                39.94691718741321
            ],
            [
                116.44046043168474,
                39.94691874736391
            ],
            [
                116.44044697971917,
                39.946921330584029
            ],
            [
                116.44043392279952,
                39.94692491219584
            ],
            [
                116.4404213866706,
                39.946929457706648
            ],
            [
                116.44040949206176,
                39.94693492334087
            ],
            [
                116.44039835352435,
                39.94694125646166
            ],
            [
                116.4403880783283,
                39.946948396077868
            ],
            [
                116.44037876542937,
                39.94695627343129
            ],
            [
                116.4403705045159,
                39.946964812658979
            ],
            [
                116.4403633751452,
                39.946973931523718
            ],
            [
                116.44035744597727,
                39.94698354220607
            ],
            [
                116.4403527741137,
                39.94699355215012
            ],
            [
                116.44034940454753,
                39.94700386495475
            ],
            [
                116.44034736973014,
                39.947014381302157
            ],
            [
                116.44034668925846,
                39.94702499991421
            ],
            [
                116.44034736968648,
                39.947035618527937
            ],
            [
                116.44034940446191,
                39.94704613488022
            ],
            [
                116.44035277398938,
                39.94705644769277
            ],
            [
                116.44035744581906,
                39.94706645764749
            ],
            [
                116.44036337495912,
                39.94707606834284
            ],
            [
                116.44037050430916,
                39.94708518722241
            ],
            [
                116.44037876520989,
                39.94709372646619
            ],
            [
                116.4403880781045,
                39.94710160383635
            ],
            [
                116.44039835330485,
                39.947108743469289
            ],
            [
                116.44040949185502,
                39.947115076606177
            ],
            [
                116.44042138648453,
                39.94712054225522
            ],
            [
                116.44043392264126,
                39.94712508777902
            ],
            [
                116.44044697959484,
                39.94712866940151
            ],
            [
                116.4404604315991,
                39.947131252629549
            ],
            [
                116.4404741491034,
                39.94713281258514
            ],
            {
                "$ref": "$.rings[0][0]"
            }
        ]
    ],
    "spatialReference": {
        "wkid": 4326
    }
}