JTS:07 判断俩个图形是否相等

版本

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

JTS equals

相等 九交模型 为 T*F **F FF*

• 图形不一样，位置不一样，不相等

    public void test() {
        Coordinate[] coordinates1 = new Coordinate[] {
                new Coordinate(1, 1), new Coordinate(1, 3), new Coordinate(4, 3), new Coordinate(4, 1), new Coordinate(1, 1)
        };
        Polygon polygon1 = geometryFactory.createPolygon(coordinates1);

        Coordinate[] coordinates2 = new Coordinate[] {
                new Coordinate(1, 4), new Coordinate(1, 6), new Coordinate(4, 6), new Coordinate(4, 4), new Coordinate(1, 4)
        };
        Polygon polygon2 = geometryFactory.createPolygon(coordinates2);

        LOGGER.info("polygon1 - polygon2 九交模型值：{}", polygon1.relate(polygon2).toString());
        LOGGER.info("polygon1 - polygon2 是否相等：{}", polygon1.equals(polygon2));
    }

20:30:49.137 [main] INFO  pers.stu.geometry.GeometryRelation - polygon1 - polygon2 九交模型值：FF2FF1212
20:30:49.139 [main] INFO  pers.stu.geometry.GeometryRelation - polygon1 - polygon2 是否相等：false

• 图形一样，位置不一样，也是不相等
  

    public void test() {
        Coordinate[] coordinates3 = new Coordinate[] {
                new Coordinate(1, 3), new Coordinate(1, 4), new Coordinate(2.5, 4), new Coordinate(2.5, 3), new Coordinate(1, 3)
        };
        Polygon polygon3 = geometryFactory.createPolygon(coordinates3);

        Coordinate[] coordinates4 = new Coordinate[] {
                new Coordinate(1, 1.5), new Coordinate(1, 2.5), new Coordinate(2.5, 2.5), new Coordinate(2.5, 1.5), new Coordinate(1, 1.5)
        };
        Polygon polygon4 = geometryFactory.createPolygon(coordinates4);

        LOGGER.info("polygon3 - polygon4 九交模型值：{}", polygon3.relate(polygon4).toString());
        LOGGER.info("polygon3 - polygon4 是否相等：{}", polygon3.equals(polygon4));
    }

20:40:19.457 [main] INFO  pers.stu.geometry.GeometryRelation - polygon3 - polygon4 九交模型值：FF2FF1212
20:40:19.459 [main] INFO  pers.stu.geometry.GeometryRelation - polygon3 - polygon4 是否相等：false

• 图形一样，位置一样，点位方向顺序不一样，也是不相等
  

    public void test() {
        Coordinate[] coordinates5 = new Coordinate[] {
                new Coordinate(1, 4), new Coordinate(1, 2), new Coordinate(4, 2), new Coordinate(4, 4), new Coordinate(1, 4)
        };
        Polygon polygon5 = geometryFactory.createPolygon(coordinates5);

        Coordinate[] coordinates6 = new Coordinate[] {
                new Coordinate(1, 4), new Coordinate(4, 4), new Coordinate(4, 2), new Coordinate(4, 4), new Coordinate(1, 4)
        };
        Polygon polygon6 = geometryFactory.createPolygon(coordinates6);

        LOGGER.info("polygon5 - polygon6 九交模型值：{}", polygon5.relate(polygon6).toString());
        LOGGER.info("polygon5 - polygon6 是否相等：{}", polygon5.equals(polygon6));
    }

10:10:22.015 [main] INFO  pers.stu.geometry.GeometryRelation - polygon5 - polygon6 九交模型值：2FF10F2F2
10:10:22.017 [main] INFO  pers.stu.geometry.GeometryRelation - polygon5 - polygon6 是否相等：false

• 图形一样，方向一样，点多一些，也是相等的
  

    public void test() {
        Coordinate[] coordinates7 = new Coordinate[] {
                new Coordinate(0, 0), new Coordinate(10, 10)
        };
        LineString lineString1 = geometryFactory.createLineString(coordinates7);

        Coordinate[] coordinates8 = new Coordinate[] {
                new Coordinate(0, 0), new Coordinate(5, 5), new Coordinate(10, 10)
        };
        LineString lineString2 = geometryFactory.createLineString(coordinates8);

        LOGGER.info("lineString1 - lineString2 九交模型值：{}", lineString1.relate(lineString2).toString());
        LOGGER.info("lineString1 - lineString2 是否相等：{}", lineString1.equals(lineString2));
    }

10:17:19.661 [main] INFO  pers.stu.geometry.GeometryRelation - lineString1 - lineString2 九交模型值：1FFF0FFF2
10:17:19.662 [main] INFO  pers.stu.geometry.GeometryRelation - lineString1 - lineString2 是否相等：true