JTS: 15 Angle 角度计算

版本

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

代码

package pers.stu.algorithm;

import org.locationtech.jts.algorithm.Angle;
import org.locationtech.jts.geom.Coordinate;
import org.locationtech.jts.geom.GeometryFactory;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * 角度使用
 * @author LiHan
 * 2023-11-06 10:11:54
 */
public class AngleUse {

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

    private Coordinate A = null;

    private Coordinate B = null;

    private Coordinate C = null;

    public static void main(String[] args) {
        AngleUse angleUse = new AngleUse();
        angleUse.init();
        angleUse.test02();
    }

    public void init() {
        A = new Coordinate(1, 3);
        B = new Coordinate(1, 1);
        C = new Coordinate(3, 1);
    }

    public void test00() {
        LOGGER.info("是否是锐角：{}", Angle.isAcute(A, B, C));
        LOGGER.info("是否是钝角：{}", Angle.isObtuse(A, B, C));
        LOGGER.info("最小夹角：{}", Angle.angleBetween(A, B, C));
        LOGGER.info("最小夹角：{}", Angle.toDegrees(Angle.angleBetween(A, B, C)));
		
		/*
		 17:11:40.006 [main] INFO  pers.stu.algorithm.AngleUse - 是否是锐角：false
		 17:11:40.007 [main] INFO  pers.stu.algorithm.AngleUse - 是否是钝角：false
		 17:11:40.008 [main] INFO  pers.stu.algorithm.AngleUse - 最小夹角：1.5707963267948966
		 17:11:40.008 [main] INFO  pers.stu.algorithm.AngleUse - 最小夹角：90.0
		*/
    }

    public void test01() {
        //找对应的位置 0到180(逆时针)之间返回正数，180-360(顺时针)之前返回负数
        System.out.println(Angle.toDegrees(Angle.normalize(Angle.toRadians(50))));
        //50.0
        System.out.println(Angle.toDegrees(Angle.normalize(Angle.toRadians(181))));
        //-179.0
        System.out.println(Angle.toDegrees(Angle.normalize(Angle.toRadians(369))));
        //9.0
        System.out.println(Angle.toDegrees(Angle.normalize(Angle.toRadians(-10))));
        //-10.0
    }

    public void test02() {
        Coordinate Bi = new Coordinate(0,2);
        Coordinate Ai = new Coordinate(1,1);
        Coordinate Ci = new Coordinate(1,3);
        //延Ai-Bi边逆时针转到Ai-CI边的角度值
        System.out.println("Angle.interiorAngle(Bi,Ai,Ci)角度="+Angle.toDegrees(Angle.interiorAngle(Bi,Ai,Ci)));
        //Angle.interiorAngle(Bi,Ai,Ci)角度=315.0

        //延Ci-Ai边逆时针转到Ai-BI边的角度值
        System.out.println("Angle.interiorAngle(Ci,Ai,Bi)角度="+Angle.toDegrees(Angle.interiorAngle(Ci,Ai,Bi)));
        //Angle.interiorAngle(Ci,Ai,Bi)角度=45.0
    }
}
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