javajigi · Oct 30, 2018 · Oct 29, 2018 · Oct 30, 2018 · Oct 30, 2018 · javajigi
diff --git a/src/main/java/Main.java b/src/main/java/Main.java
@@ -1,7 +1,25 @@
+//import model.Line;
+
+import model.Line;
+import model.MakeLine;
+import view.InputView;
 import view.PrintView;
 
+
 public class Main {
+
     public static void main(String[] args) {
-        PrintView.printAll();
+        PrintView printView = new PrintView();
+        String coordinateNum = InputView.inputCoordinate();
+        try {
+            Line line = MakeLine.makeLine(coordinateNum);
+            printView.printAll(line);
+        } catch (Exception e) {
+            System.out.println(e.getMessage());
+            main(args);
+        }
     }
 }
+
+//point (x,y)만 담고있는 클래스를 만들기.
+//point를 여러개 갖고있는 클래스 만들기
diff --git a/src/main/java/empty.txt b/src/main/java/empty.txt
diff --git a/src/main/java/model/Line.java b/src/main/java/model/Line.java
@@ -0,0 +1,47 @@
+package model;
+
+public class Line {
+
+    private Point a;
+    private Point b;
+
+    public Line(Point a, Point b) {
+        this.a = a;
+        this.b = b;
+    }
+
+    public Point getA() {
+        return a;
+    }
+
+    public Point getB() {
+        return b;
+    }
+
+    //Math.abs는 절대값
+    public int minusX() {
+        return Math.abs(a.getX() - b.getX());
+    }
+
+    public int minusY() {
+        return Math.abs(a.getY() - b.getY());
+    }
+
+    public int square(int num) {
+        return num * num;
+    }
+
+    public double lineDistance() {
+        int x = minusX();
+        int y = minusY();
+        return Math.sqrt(square(x) + square(y));
+    }
+
+    @Override
+    public String toString() {
+        return "Line{" +
+                "a=" + a +
+                ", b=" + b +
+                '}';
+    }
+}
diff --git a/src/main/java/model/MakeLine.java b/src/main/java/model/MakeLine.java
@@ -0,0 +1,12 @@
+package model;
+
+public class MakeLine {
+
+    public static Line makeLine(String coordinate) throws Exception {
+        String removeBraket = coordinate.replace("(", "").replace(")", "");
+        String[] groups = removeBraket.split("-");
+        Point a = Point.position(groups[0]);
+        Point b = Point.position(groups[1]);
+        return new Line(a, b);
+    }
+}
diff --git a/src/main/java/model/Point.java b/src/main/java/model/Point.java
@@ -0,0 +1,45 @@
+package model;
+
+public class Point {
+
+    private int x;
+    private int y;
+
+    private Point(int x, int y) throws Exception {
+//        IllegalArgumentException	매개변수가 의도하지 않은 상황을 유발시킬 때
+//        IllegalStateException	메소드를 호출하기 위한 상태가 아닐 때
+        if (x < 0 || x > 24) {
+            throw new IllegalArgumentException("0이상 또는 24 이하만 입력해주십시오.");
+        }
+        if (y < 0 || y > 24) {
+            throw new IllegalArgumentException("0이상 또는 24 이하만 입력해주십시오.");
+        }
+        this.x = x;
+        this.y = y;
+    }
+
+    // 항상 view 패키지가 아니면 클래스 메소드를 사용하면 안된다고 생각했었다.
+    //팩토리 메소드를 처음 알게 되었고, 자세히 알아보고 써봐야겠다.
+    public static Point position(String string) throws Exception {
+        String[] list = string.split(",");
+        return new Point(Integer.parseInt(list[0]), Integer.parseInt(list[1]));
+    }
+
+    public int getX() {
+        return x;
+    }
+
+    public int getY() {
+        return y;
+    }
+
+    @Override
+    public String toString() {
+        return "Point{" +
+                "x=" + x +
+                ", y=" + y +
+                '}';
+    }
+
+}
+
diff --git a/src/main/java/view/InputView.java b/src/main/java/view/InputView.java
@@ -0,0 +1,14 @@
+package view;
+
+import java.util.*;
+
+public class InputView {
+    static Scanner scanner = new Scanner(System.in);
+
+    public static String inputCoordinate() {
+        System.out.println("좌표를 입력하세요");
+        String seperateDash = scanner.next();
+        return seperateDash;
+    }
+
+}
diff --git a/src/main/java/view/PrintView.java b/src/main/java/view/PrintView.java
@@ -1,48 +1,101 @@
 package view;
 
+import model.Line;
+import model.Point;
+
 public class PrintView {
-    private static StringBuilder stringBuilder = new StringBuilder();
+    private static StringBuilder coordinatePrint = new StringBuilder();
     public static final int COORDINATE = 24;
 
-    public static void printAll() {
-        printCoordinate();
-        System.out.println(String.valueOf(stringBuilder));
+
+    public void printAll(Line line) {
+        Point a = line.getA();
+        Point b = line.getB();
+        printCoordinate(a, b);
+        printDistance(line.lineDistance());
+        System.out.println(coordinatePrint.toString());
     }
 
-    public static void printCoordinate() {
-        printBarY();
-        stringBuilder.append(String.format("%3s", "┼"));
+    public static void printCoordinate(Point a, Point b) {
+        printBarY(a, b);
+        coordinatePrint.append(String.format("%3s", "┼"));
         printBarX();
     }
 
     private static void printBarX() {
         for (int i = 0; i < COORDINATE; i++) {
             printRow();
         }
-        stringBuilder.append("\n");
+        coordinatePrint.append("\n");
+        coordinatePrint.append("    ");
         for (int j = 0; j <= COORDINATE; j += 2) {
-            stringBuilder.append(String.format("%2d", j));
-            stringBuilder.append(String.format("%6s", " "));
+            coordinatePrint.append(String.format("%2d", j));
+            coordinatePrint.append(String.format("%6s", " "));
         }
+        coordinatePrint.append("\n");
     }
 
-    private static void printBarY() {
-        for (int i = COORDINATE; i > 0; i -= 2) {
-            stringBuilder.append(String.format("%2d", i));
+    private static void printBarY(Point a, Point b) {
+        for (int i = COORDINATE; i >= 1; i--) {
+            printNumY(i);
             printHeight();
-            stringBuilder.append("\n");
+            if (i == a.getY()) {
+                skipDot(a);
+            }
+            if (i == b.getY()) {
+                aMatchYBar(a, b);
+                aMisMatchYBar(a, b);
+            }
+            coordinatePrint.append("\n");
+        }
+    }
+
+    private static void skipDot(Point a) {
+        for (int j = 0; j < a.getX(); j++) {
+            coordinatePrint.append(String.format("%4s", " "));
+        }
+        coordinatePrint.append("*");
+    }
+
+    private static void aMatchYBar(Point a, Point b) {
+        if (a.getY() == b.getY()) {
+            for (int j = 0; j < Math.abs(b.getX() - a.getX()); j++) {
+                coordinatePrint.append(String.format("%4s", " "));
+            }
+            coordinatePrint.append("*");
+        }
+    }
+
+    private static void aMisMatchYBar(Point a, Point b) {
+        if (a.getY() != b.getY()) {
+            for (int j = 0; j < b.getX(); j++) {
+                coordinatePrint.append(String.format("%4s", " "));
+            }
+            coordinatePrint.append("*");
+        }
+    }
+
+    private static void printNumY(int i) {
+        if (i % 2 == 0) {
+            coordinatePrint.append(String.format("%2d", i));
+        }
+        if (i % 2 == 1) {
+            coordinatePrint.append(String.format("%2s", " "));
         }
     }
 
     public static void printRow() {
         for (int i = 0; i < 2; i++) {
-            stringBuilder.append("─");
+            coordinatePrint.append("─");
         }
     }
 
     public static void printHeight() {
-        stringBuilder.append("┃");
-        stringBuilder.append("\n");
-        stringBuilder.append(String.format("%3s", "┃"));
+        coordinatePrint.append("┃");
+    }
+
+    private static void printDistance(double lineDistance) {
+        coordinatePrint.append("점과 점사이의 간격 : ");
+        coordinatePrint.append(String.format("%-10.3f", lineDistance));
     }
 }
diff --git a/src/test/java/model/LineTest.java b/src/test/java/model/LineTest.java
@@ -0,0 +1,43 @@
+package model;
+
+import org.junit.Test;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+
+public class LineTest {
+    Point a = Point.position("1,2");
+    Point b = Point.position("3,4");
+    Line line = new Line(a, b);
+
+    public LineTest() throws Exception {
+    }
+
+    @Test
+    public void minusX() {
+        assertThat(line.minusX()).isEqualTo(2);
+    }
+
+    @Test
+    public void minusY() {
+        assertThat(line.minusY()).isEqualTo(2);
+    }
+
+    @Test
+    public void square() {
+        int x = line.minusX();
+        int y = line.minusY();
+        assertThat(line.square(x)).isEqualTo(4);
+        assertThat(line.square(y)).isEqualTo(4);
+    }
+
+    @Test
+    public void lineDistance() {
+        int x = line.minusX();
+        int y = line.minusY();
+        int xSquare = line.square(x);
+        int ySquare = line.square(y);
+        double distance = line.lineDistance();
+        assertThat(distance).isEqualTo(xSquare + ySquare);
+    }
+}