#format java
/* Shape OOP test for PythonVsJava
 */
import junit.framework.*;

abstract class Shape {
    public abstract double area();
    public abstract double circumference();
}

class Circle extends Shape {
    protected double r;
    public Circle(double aRadius) {
        this.r = aRadius;
    }
    public double getRadius() {
        return r;
    }
    public double area() {
        return Math.PI * r * r;
    }
    public double circumference() {
        return 2 * Math.PI * r;
    }
}

class Rectangle extends Shape {
    protected double w, h;
    public Rectangle(double aWidth, double aHeight) {
        this.w = aWidth;
        this.h = aHeight;
    }
    public double getWidth() {
        return w;
    }
    public double getHeight() {
        return h;
    }
    public double area() {
        return w * h;
    }
    public double circumference() {
        return 2 * (w+h);
    }
}

class Square extends Shape {
    protected double s;
    public Square(double aSide) {
        s = aSide;
    }
    public double getSide() {
        return s;
    }
    public double area() {
        return s * s;
    }
    public double circumference() {
        return 4 * s;
    }
}

interface Centered {
    public void setCenter(double aX, double aY);
    public double getCenterX();
    public double getCenterY();
}

class CenteredRectangle extends Rectangle implements Centered {
    private double cx, cy;
    public CenteredRectangle(double aCx, double aCy, 
                             double aWidth, double aHeight) {
        super(aWidth, aHeight);
        cx = aCx;
        cy = aCy;
    }
    public void setCenter(double aCx, double aCy) {
        cx = aCx; cy = aCy;
    }
    public double getCenterX() {
        return cx;
    }
    public double getCenterY() {
        return cy;
    }
}

class CenteredCircle extends Circle implements Centered {
    private double cx, cy;
    public CenteredCircle(double aCx, double aCy, double aRadius) {
        super(aRadius);
        cx = aCx;
        cy = aCy;
    }
    public void setCenter(double aCx, double aCy) {
        cx = aCx;
        cy = aCy;
    }
    public double getCenterX() {
        return cx;
    }
    public double getCenterY() {
        return cy;
    }
}

class CenteredSquare extends Square implements Centered {
    private double cx, cy;
    public CenteredSquare(double aCx, double aCy, double aSide) {
        super(aSide);
        cx = aCx;
        cy = aCy;
    }
    public void setCenter(double aCx, double aCy) {
        cx = aCx; 
        cy = aCy;
    }
    public double getCenterX() {
        return cx;
    }
    public double getCenterY() {
        return cy;
    }
}



public class ShapeTest extends TestCase {
    public static void main(String[] args){
        junit.textui.TestRunner.run(ShapeTest.class);
    }
    public void testCircle() {
        Circle myCircle = new Circle(5.5);
        assertEquals(5.5, myCircle.getRadius(), 0.001);
        assertEquals(95.0331, myCircle.area(), 0.001);
        assertEquals(34.557, myCircle.circumference(), 0.001);
    }
    public void testRectangle() {
        Rectangle myRec = new Rectangle(3,4);
        assertEquals(3, myRec.getWidth(), 0.001);
        assertEquals(12, myRec.area(), 0.001);
    }
    public void testAbstractClass() {
        Shape[] shapes = new Shape[3];
        shapes[0] = new Circle(2.0);
        shapes[1] = new Rectangle(1, 3.0);
        shapes[2] = new Rectangle(4.0, 2.0);
        double total_area = 0;
        for(int i=0; i < shapes.length; i++)
            total_area += shapes[i].area();
        assertEquals(23.566, total_area, 0.001);
    }
    public void testSquare() {
        Square mySquare = new Square(3);
        assertEquals(3.0, mySquare.getSide(), 0.001);
    }
    public void testCenteredRectangle() {
        CenteredRectangle myCRec = new CenteredRectangle(1,2,3,4);
        assertEquals(1.0, myCRec.getCenterX(), 0.001);
    }
    public void testCenteredInterface() {
        Shape[] shapes = new Shape[3];
        shapes[0] = new CenteredCircle(1.0, 1.0, 1.0);
        shapes[1] = new CenteredSquare(2.5, 2, 3);
        shapes[2] = new CenteredRectangle(2.3, 4.5, 3, 4);

        double totalArea = 0;
        double totalDistance = 0;
        for(int i=0; i < shapes.length; i++) {
            totalArea += shapes[i].area();
            if(shapes[i] instanceof Centered) {
                Centered c = (Centered)shapes[i];
                double cx = c.getCenterX();
                double cy = c.getCenterY();
                totalDistance += Math.sqrt(cx*cx + cy*cy);
            }
        }
        assertEquals(24.1415, totalArea, 0.001);
        assertEquals(9.669, totalDistance, 0.001);
    }
}