JTS: 16 Orientation 方向

这里写目录标题

- - 版本
  - 代码

版本

org.locationtech.jts:jts-core:1.19.0

代码

java 复制代码

    public static void main(String[] args) {
        OrientationUse orientationUse = new OrientationUse();
        orientationUse.test02();
    }
    public void test02() {
        A = new Coordinate(2, 1);
        B = new Coordinate(2, 2.5);
        C = new Coordinate(3, 4);
        int index = Orientation.index(A, B, C);
        LOGGER.info("index: {}", index);
        // 17:32:49.033 [main] INFO  pers.stu.algorithm.AngleUse - index: -1
    }

java 复制代码

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

    public void test00() {
        A = new Coordinate(2, 1);
        B = new Coordinate(2, 2.5);
        C = new Coordinate(2, 4);
        int index = Orientation.index(A, B, C);
        LOGGER.info("index: {}", index);
        // 17:25:11.618 [main] INFO  pers.stu.algorithm.AngleUse - index: 0
    }

java 复制代码

	public static void main(String[] args) {
	   OrientationUse orientationUse = new OrientationUse();
	   orientationUse.test01();
	}
	
	public void test01() {
	   A = new Coordinate(2, 1);
	   B = new Coordinate(2, 2.5);
	   C = new Coordinate(1, 4);
	   int index = Orientation.index(A, B, C);
	   LOGGER.info("index: {}", index);
	   // 17:32:49.033 [main] INFO  pers.stu.algorithm.AngleUse - index: 1
	}

java 复制代码

    public static void main(String[] args) {
        OrientationUse orientationUse = new OrientationUse();
        orientationUse.test04();
    }
    public void test04() {
        GeometryFactory geometryFactory = new GeometryFactory();
        Coordinate[] coordinates1 = new Coordinate[] {new Coordinate(1, 4), new Coordinate(1, 1.5), new Coordinate(4.5, 1.5), new Coordinate(4.5, 4),new Coordinate(1, 4)};
        // 是否是逆时针的环：true

        Coordinate[] coordinates2 = new Coordinate[] {new Coordinate(1, 4), new Coordinate(4.5, 4), new Coordinate(4.5, 1.5), new Coordinate(1, 1.5),new Coordinate(1, 4)};
        // 是否是逆时针的环：false
        LOGGER.info("是否是逆时针的环：{}", Orientation.isCCW(coordinates2));
    }