point/point-representation-independence/version5a/Client.cs - Some client class of Point - Similar to a Point client from an earlier lecture.

Lecture 8 - slide 8 : 37 Program 3

// A client of Point that instantiates three points and calculates
// the circumference of the implied triangle.

using System;

public class Application{

  public static Point PromptPoint(string prompt){
    double x, y;
    AbstractPoint.PointRepresentation mode = 
         AbstractPoint.PointRepresentation.Rectangular;
    Console.WriteLine(prompt);
    x = Double.Parse(Console.ReadLine());
    y = Double.Parse(Console.ReadLine());
    return new Point(mode,x,y);
  }

  public static void Main(){
    AbstractPoint p1, p2, p3;
    double p1p2Dist, p2p3Dist,  p3p1Dist, circumference;

    p1 = PromptPoint("Enter first point");
    p2 = PromptPoint("Enter second point");
    p3 = PromptPoint("Enter third point");

    p1.Rotate(Math.PI);
    p2.Move(1.0, 2.0);

    p1p2Dist = Math.Sqrt((p1.X - p2.X) * (p1.X - p2.X) + 
                         (p1.Y - p2.Y) * (p1.Y - p2.Y));
    p2p3Dist = Math.Sqrt((p2.X - p3.X) * (p2.X - p3.X) + 
                         (p2.Y - p3.Y) * (p2.Y - p3.Y));
    p3p1Dist = Math.Sqrt((p3.X - p1.X) * (p3.X - p1.X) + 
                         (p3.Y - p1.Y) * (p3.Y - p1.Y));

    circumference = p1p2Dist + p2p3Dist + p3p1Dist;

    Console.WriteLine("Circumference:\n {0}\n {1}\n {2}\n {3}", 
                       p1, p2, p3, circumference);
  }

}