版本

org.locationtech.jts:jts-core:1.19.0
链接: github

代码

package pers.stu.algorithm;

import org.locationtech.jts.algorithm.locate.IndexedPointInAreaLocator;
import org.locationtech.jts.geom.Coordinate;
import org.locationtech.jts.geom.CoordinateArrays;
import org.locationtech.jts.geom.GeometryFactory;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * 判断是否在点在面的内部
 * @author LiHan
 * 2023-11-10 10:11:30
 */
public class IndexedPointInAreaLocatorUse {

    private static final Logger LOGGER = LoggerFactory.getLogger(IndexedPointInAreaLocatorUse.class);

    private final GeometryFactory geometryFactory = new GeometryFactory();

    public static void main(String[] args) {
        IndexedPointInAreaLocatorUse indexedPointInAreaLocatorUse = new IndexedPointInAreaLocatorUse();
        indexedPointInAreaLocatorUse.test00();
    }

    public void test00() {
        Coordinate[] coordinates1 = new Coordinate[] {
                new Coordinate(3, 8),new Coordinate(10, 8),new Coordinate(10, 3),new Coordinate(3, 3),
                new Coordinate(3, 8)
        };

        Coordinate[] coordinates2 = new Coordinate[] {
                new Coordinate(6, 5), new Coordinate(10,6), new Coordinate(13,5)
        };

        IndexedPointInAreaLocator indexedPointInAreaLocator = new IndexedPointInAreaLocator(geometryFactory.createPolygon(coordinates1));

        for (Coordinate coordinate : coordinates2) {
            // org.locationtech.jts.geom.Location
            // 0 内部，1 边界，2 外部
            LOGGER.info("是否在面里：{}", indexedPointInAreaLocator.locate(coordinate));
        }
    }
}

18:12:43.842 [main] INFO  pers.stu.algorithm.IndexedPointInAreaLocatorUse - 是否在面里：0
18:12:43.844 [main] INFO  pers.stu.algorithm.IndexedPointInAreaLocatorUse - 是否在面里：1
18:12:43.844 [main] INFO  pers.stu.algorithm.IndexedPointInAreaLocatorUse - 是否在面里：2