GD - TwoShapes.java

package gd;

/**
 * This is a shape consisting of two shapes. Yes, two shapes in a shape. It's
 * like inception, but more.
 * @author hypesystem
 * @email  [email protected]
 */
public class TwoShapes extends Shape {
    private Shape shape1, shape2;

    /**
     * Creates a shape consisting of two other shapes.
     * @param shape1 the first shape
     * @param shape2 the second shape
     */
    public TwoShapes(Shape shape1, Shape shape2) {
        super(null);
        this.shape1 = shape1;
        this.shape2 = shape2;
    }

    /**
     * Returns the area of the multishape (the sum of the areas of the two
     * subshapes).
     * @return area of shape
     */
    @Override
    public double area() {
        return shape1.area() + shape2.area();
    }

    /**
     * If a shape consists of two shapes, its circumference is NOT equal to the
     * circumference of each shape. Even if they don't overlap, if it is still
     * ONE shape, its sides will touch at certain places, hence making the cir-
     * cumference smaller. However for the sake of this assignment I will do as
     * it insinuates in the assignment.
     * @return circumference of shape (as if)
     */
    @Override
    public double circumference() {
        return shape1.circumference() + shape2.circumference();
    }

    /**
     * Counts the simple shapes in this composite shape.
     * @return amount of simple shapes
     */
    @Override
    public int countSimple() {
        return shape1.countSimple() + shape2.countSimple();
    }
}