package Question7_5;

public class Question {

public static int randomInt(int n) {

return (int) (Math.random() * n);

}

public static void printLine(Line l) {

System.out.println(l.start.x + "\t" + l.start.y);

System.out.println(l.end.x + "\t" + l.end.y);

}

public static void printSquare(Square s) {

System.out.println(s.left + "\t" + s.top + "\t" + s.size);

}

public static boolean isApproxEqual(double d1, double d2) {

double epsilon = .001;

if (Math.abs(d1 - d2) < epsilon) {

return true;

}

return false;

}

public static boolean isApproxEqual(Point p1, Point p2) {

return isApproxEqual(p1.x, p2.x) && isApproxEqual(p1.y, p2.y);

}

public static boolean doTest(Square s1, Square s2, Point start, Point end) {

Line line = s1.cut(s2);

boolean r = (isApproxEqual(line.start, start) && isApproxEqual(line.end, end)) || (isApproxEqual(line.start, end) && isApproxEqual(line.end, start));

if (!r) {

printSquare(s1);

printSquare(s2);

printLine(line);

System.out.println(start.toString());

System.out.println(end.toString());

System.out.println();

return r;

}

return r;

}

public static boolean doTestFull(Square s1, Square s2, Point start, Point end) {

return doTest(s1, s2, start, end) && doTest(s2, s1, start, end);

}

public static void doTests() {

// Equal

doTestFull(new Square(1, 1, 5), new Square(1, 1, 5), new Point(3.5, 1), new Point(3.5, 6));

// Concentric

doTestFull(new Square(1, 1, 5), new Square(2, 2, 3), new Point(3.5, 1), new Point(3.5, 6));

// Partially overlapping -- side by side

doTestFull(new Square(10, 10, 10), new Square(8, 10, 10), new Point(8, 15), new Point(20, 15));

// Partially overlapping -- corners

doTestFull(new Square(10, 10, 10), new Square(8, 7, 7), new Point(8.777777, 7), new Point(18.8888888, 20));

// Partially overlapping -- on top of each other

doTestFull(new Square(10, 10, 10), new Square(8, 7, 15), new Point(8, 22), new Point(23, 7));

// Not overlapping -- side by side

doTestFull(new Square(10, 10, 10), new Square(19, 25, 4), new Point(12.5, 10), new Point(22, 29));

// Not overlapping -- on top of each other

doTestFull(new Square(10, 10, 10), new Square(4, 4, 3), new Point(4, 4), new Point(20, 20));

// Contained

doTestFull(new Square(10, 10, 10), new Square(12, 14, 3), new Point(10, 16.66666), new Point(20, 13.333));

}

public static void main(String[] args) {

/* For an easy way to test these, open up Square Cut Tester.xlsx

* in the Chapter 7, Problem 5 folder. Copy and paste the exact

* output from below into the file (including all tabs).

*/

doTests();

}

}