'homework02'

lecture02/src/main/java/ru/atom/geometry/Bar.java

@@ -0,0 +1,89 @@
+package ru.atom.geometry;
+
+/**
+ * Template class for
+ */
+public class Bar implements Collider /* super class and interfaces here if necessary */ {
+    private Point P_1;
+    private Point P_2;
+    private float Height;
+    private float Width;
+
+    // and methods
+    Bar(Point p1, Point p2) {
+        P_1 = p1;
+        P_2 = p2;
+        Height = Math.max(p1.Get_Y(), p2.Get_Y()) - Math.min(p1.Get_Y(), p2.Get_Y());
+        Width = Math.max(p1.Get_X(), p2.Get_X()) - Math.min(p1.Get_X(), p2.Get_X());
+    }
+
+    public Point Get_another_low_point() {
+        Point point = P_1.Get_Y() >= P_2.Get_Y() ? P_1 : P_2;
+        return new Point((int)point.Get_X(), (int)(point.Get_Y() - Height));
+    }
+    public Point Get_another_high_point() {
+        Point point = P_1.Get_Y() <= P_2.Get_Y() ? P_1 : P_2;
+        return new Point((int)point.Get_X(), (int)(point.Get_Y() + Height));
+    }
+
+    /**
+     * @param o - other object to check equality with
+     * @return true if two points are equal and not null.
+     */
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+
+        // cast from Object to Point
+        Bar bar = (Bar) o;
+
+        // your code here
+        return
+                Math.abs( bar.P_2.Get_X() - bar.P_1.Get_X()) - Math.abs(this.P_2.Get_X() - this.P_1.Get_X()) < 10e-5 &&
+                Math.abs(bar.P_2.Get_Y() - bar.P_1.Get_Y()) - Math.abs(this.P_2.Get_Y() - this.P_1.Get_Y()) < 10e-5;
+    }
+
+    public boolean Contains_point(Point point) {
+        return
+        point.Get_X() >= Math.min(this.P_1.Get_X(), this.P_2.Get_X()) &&
+        point.Get_X() <= Math.max(this.P_1.Get_X(), this.P_2.Get_X()) &&
+        point.Get_Y() >= Math.min(this.P_1.Get_Y(), this.P_2.Get_Y()) &&
+        point.Get_Y() <= Math.max(this.P_1.Get_Y(), this.P_2.Get_Y());
+    }
+
+    @Override
+    public boolean isColliding(Collider other) {
+        if (other.getClass() == this.getClass()) {
+            Bar bar = (Bar)other;
+            Point this_high_pt = Get_another_high_point();
+            Point this_low_pt = Get_another_low_point();
+            Point other_high_pt = bar.Get_another_high_point();
+            Point other_low_pt = bar.Get_another_low_point();
+
+            return
+            this.Contains_point(bar.P_1) || this.Contains_point(bar.P_2) ||
+            this.Contains_point(other_high_pt) || this.Contains_point(other_low_pt) ||
+            (this_high_pt.Get_Y() >= other_high_pt.Get_Y() &&
+                    this_high_pt.Get_X() >= Math.min(other_high_pt.Get_X(), other_low_pt.Get_X()) &&
+                    this_high_pt.Get_X() <= Math.max(other_high_pt.Get_X(), other_low_pt.Get_X()) &&
+            this_low_pt.Get_Y() <= other_low_pt.Get_Y() &&
+                    this_low_pt.Get_X() >= Math.min(other_high_pt.Get_X(), other_low_pt.Get_X()) &&
+                    this_low_pt.Get_X() <= Math.max(other_high_pt.Get_X(), other_low_pt.Get_X())
+                    ) ||
+            (this_high_pt.Get_Y() <= other_high_pt.Get_Y() &&
+                    other_high_pt.Get_X() >= Math.min(this_high_pt.Get_X(), this_low_pt.Get_X()) &&
+                    other_high_pt.Get_X() <= Math.max(this_high_pt.Get_X(), this_low_pt.Get_X()) &&
+            this_low_pt.Get_Y() >= other_low_pt.Get_Y() &&
+                    other_low_pt.Get_X() >= Math.min(this_high_pt.Get_X(), this_low_pt.Get_X()) &&
+                    other_low_pt.Get_X() <= Math.max(this_high_pt.Get_X(), this_low_pt.Get_X())
+            ) ||
+            bar.Contains_point(this_high_pt) || bar.Contains_point(this_low_pt) ||
+            bar.Contains_point(P_1) || bar.Contains_point(P_2);
+        }
+        else if (other.getClass() == Point.class){
+            Point point = (Point)other;
+            return this.Contains_point(point);
+        } else return false;
+    }
+}

lecture02/src/main/java/ru/atom/geometry/Geometry.java

@@ -22,14 +22,17 @@ private Geometry() {
      * @return new Bar
      */
     public static Collider createBar(int firstCornerX, int firstCornerY, int secondCornerX, int secondCornerY) {
-        throw new UnsupportedOperationException();
+        return new Bar(
+            new Point(firstCornerX, firstCornerY),
+            new Point(secondCornerX, secondCornerY)
+        );
     }
 
     /**
      * 2D point
      * @return new Point
      */
     public static Collider createPoint(int x, int y) {
-        throw new UnsupportedOperationException();
+        return new Point(x, y);
     }
 }

lecture02/src/main/java/ru/atom/geometry/Point.java

@@ -3,9 +3,21 @@
 /**
  * Template class for
  */
-public class Point /* super class and interfaces here if necessary */ {
-    // fields
+public class Point implements Collider /* super class and interfaces here if necessary */ {
+    private float X;
+    private float Y;
     // and methods
+    Point(int x, int y) {
+        X = x;
+        Y = y;
+    }
+
+    public float Get_X() {
+        return X;
+    }
+    public float Get_Y() {
+        return Y;
+    }
 
     /**
      * @param o - other object to check equality with
@@ -20,6 +32,15 @@ public boolean equals(Object o) {
         Point point = (Point) o;
 
         // your code here
-        throw new UnsupportedOperationException();
+        return this.X==point.X && this.Y==point.Y;
+    }
+
+    @Override
+    public boolean isColliding(Collider other) {
+        if (other.getClass() == this.getClass())
+            return this.equals(other);
+        else {
+            return other.isColliding(this);
+        }
     }
 }