A04 - Class for Polygon and Point

We want to put the polygon and the euclidean distance exercise in own classes.¹

Step 1

Create two classes one for the polygon (Polygon) and one for a point (Point2D). These two classes should be in seperate files.

But keep the Programm class with the main method.

Hint: All classes should be in the same namespace.

Step 2

The Point2D class needs the following members:

• fields for both coordinates
• two constructors - one for empty parameters and one for the coordinates as parameters
• one method to calculate the distance between two points
  • the calculation is between the point itself and another point, given as a parameter

The Polygon class needs the following members:

• a private field and public property for the array of vertices
  • if the vertices changed (per set) it should recalculate the area
• a property for the area
  • with get and private set
• a property for the vertex count
  • only a get (it can get the count from the array)
• two constructors - one for epmty parameters and one for an array of points as parameter
• a private method that calculates the area of the polygon

Step 3

Update the calculation methods with the new datastructures.

Step 4 (Optional)

Put the whole process of the polygon creation in an own (static²) method in the Programm class.