JTS: 17 DiscreteHausdorffDistance 豪斯多夫距离计算

版本

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

代码

import org.locationtech.jts.algorithm.distance.DiscreteHausdorffDistance;
import org.locationtech.jts.algorithm.distance.PointPairDistance;
import org.locationtech.jts.geom.Coordinate;
import org.locationtech.jts.geom.GeometryFactory;
import org.locationtech.jts.geom.Point;
import org.locationtech.jts.geom.Polygon;
import org.locationtech.jts.util.GeometricShapeFactory;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import pers.stu.util.GeoGebraUtil;

import java.util.Arrays;

/**
 * 豪斯多夫距离计算
 * 计算一个点，距离图形最远的一个点
 * @author LiHan
 * 2023-11-09 17:11:41
 */
public class DiscreteHausdorffDistanceUse {

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

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

    public void test00() {
        // 创建圆型
        GeometricShapeFactory geometricShapeFactory = new GeometricShapeFactory();
        geometricShapeFactory.setSize(20);
        geometricShapeFactory.setNumPoints(30);
        geometricShapeFactory.setBase(new Coordinate(10, 10));
        geometricShapeFactory.setRotation(0);
        Polygon rect = geometricShapeFactory.createEllipse();
        LOGGER.info(rect.toText());
        LOGGER.info(GeoGebraUtil.compare(rect));

        // 创建点
        GeometryFactory geometryFactory = new GeometryFactory();
        Point point = geometryFactory.createPoint(new Coordinate(20, 5));

        DiscreteHausdorffDistance discreteHausdorffDistance = new DiscreteHausdorffDistance(rect, point);
        discreteHausdorffDistance.distance();
        LOGGER.info("获取点位：{}", Arrays.toString(discreteHausdorffDistance.getCoordinates()));

        // 计算豪斯多夫距离
        LOGGER.info("最远距离: {}", DiscreteHausdorffDistance.distance(rect,point));
    }
}
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16:41:08.671 [main] INFO  pers.stu.algorithm.DiscreteHausdorffDistanceUse - 获取点位：[(20.0, 5.0, NaN), (21.045284632676537, 29.945218953682733, NaN)]
16:41:08.671 [main] INFO  pers.stu.algorithm.DiscreteHausdorffDistanceUse - 最远距离: 24.9671097368214
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