JTS: 23 lineDissolver 线段分割

版本

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

代码

将一组geometry几何分解成一组最大长度的linestring，其中重叠的部分只出现一次

package pers.stu.dissolve;

import org.locationtech.jts.dissolve.LineDissolver;
import org.locationtech.jts.geom.Coordinate;
import org.locationtech.jts.geom.Geometry;
import org.locationtech.jts.geom.GeometryFactory;
import org.locationtech.jts.geom.LineString;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import pers.stu.util.GeoGebraUtil;

/**
 * 
 */
public class LineDissolverUse {

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

    private final GeometryFactory geometryFactory = new GeometryFactory();

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

    public void test00() {
        Coordinate[] coordinate1 = new Coordinate[] {
              new Coordinate(1.5, 9), new Coordinate(4.5, 9), new Coordinate(7, 11.5)
        };

        Coordinate[] coordinate2 = new Coordinate[] {
                new Coordinate(1.5, 9), new Coordinate(4.5, 9), new Coordinate(7, 9)
        };

        Coordinate[] coordinate3 = new Coordinate[] {
                new Coordinate(4.5, 9), new Coordinate(7, 11.5), new Coordinate(7, 9), new Coordinate(10, 9)
        };

        LineString lineString1 = geometryFactory.createLineString(coordinate1);
        LineString lineString2 = geometryFactory.createLineString(coordinate2);
        LineString lineString3 = geometryFactory.createLineString(coordinate3);

        LineDissolver lineDissolver = new LineDissolver();
        lineDissolver.add(lineString1);
        lineDissolver.add(lineString2);
        lineDissolver.add(lineString3);
        Geometry geometry = lineDissolver.getResult();
        LOGGER.info(geometry.toText());
        LOGGER.info(GeoGebraUtil.compare(geometry));
    }

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