public class PolygonTest {

	public static void main(String[] args) {
	
		// Constants:
		double w = 3, h = 4;
		Dimension d = new Dimension(w, h);
		double t = Math.PI/3;
		
		// An array of polygons:
		int numPolys = 12;
		Polygon[] polygon = new Polygon[numPolys];
		
		// Temporary variables:
		Square square = new Square();
		Rectangle rectangle = new Rectangle(); 
		Parallelogram parallelogram = new Parallelogram();

		// Two squares:
		polygon[0] = new Square(w);
		square.setWidth(w); polygon[1] = square;
		// Five rectangles:
		polygon[2] = new Rectangle(w, h);
		rectangle.setWidth(w); rectangle.setHeight(h); polygon[3] = rectangle; 
		rectangle.setDimension(w, h); polygon[4] = rectangle;
		polygon[5] = new Rectangle(d);
		rectangle.setDimension(d); polygon[6] = rectangle; 
		// Five parallelograms:
		polygon[7] = new Parallelogram(w, h, t);
		polygon[8] = new Parallelogram(d, t);
		parallelogram.setWidth(w); parallelogram.setHeight(h); 
		parallelogram.setAngle(t); polygon[9] = parallelogram;
		parallelogram.setDimension(w, h); polygon[10] = parallelogram;
		parallelogram.setDimension(d); polygon[11] = parallelogram;
		
		double perimeter, area;
		
		for (int i = 0; i < polygon.length; i++) {
			perimeter = polygon[i].perimeter();
			area = polygon[i].area();
			System.out.print("Polygon " + i);
			System.out.print(", perimeter = " + perimeter);
			System.out.println(", area = " + area);
		}

	}
	
}