Polygons are closed two-dimensional shapes bounded by line segments. The segments meet in pairs at corners called vertices. A polygon is irregular if not all its sides are equal in length. The figure below shows examples of irregular polygons. (From: https://brilliant.org/wiki/irregular-polygons/)
The class Point2D.Double can be used to represent an x,y point, where each x or y value is a Double. For example, Point2D.Double(2.5, 3.1) constructs and initializes a point at coordinates (2.5, 3.1). Hint: reference Java documentation to learn more about this class.
Use the Shoelace formula to calculate the area of a polygon. The area is one half of the sum of the products of each x coordinate with the y coordinate shifted by one index.
- Implement a class IrregularPolygon that contains an array list of Point2D.Double objects. Start with the template provided in the resources below.
- Complete the draw() method, which uses DrawingTool to draw a polygon.
- Complete the perimeter() method which should compute the perimeter of the polygon.
- Complete the area() method which should compute the area of the polygon.
- Ensure the test suite passes all tests.
Template: https://github.com/mengjiaocyr/irregular-polygon-template Shoelace formula: https://en.wikipedia.org/wiki/Shoelace_formula Point2D docs: https://docs.oracle.com/javase/8/docs/api/java/awt/geom/Point2D.html DrawingTool docs: https://pavao.org/compsci/gpdraw/html/gpdraw/DrawingTool.html