/**************************************************
* Program: Pipe.java
* Date: April 2015
* Purpose: Example of implementing Comparable
* Original source found at
* http://ocw.mit.edu/courses/civil-and-environmental-engineering/1-00-introduction-to-computers-and-engineering-problem-solving-spring-2012/lecture-notes/MIT1_00S12_Lec_34.pdf
****************************************************/


public class Pipe implements Comparable<Pipe> {

   private double diameter;
   private int numberOfPipes;
   public static final double TOLERANCE = 10E-15;

   public Pipe(double diameter, int numberOfPipes) { 
     this.diameter = diameter;
     this.numberOfPipes = numberOfPipes; 
   }
   
   public double getDiameter() { return diameter; } 
   public int getNumberOfPipes() { return numberOfPipes; } 
   
   @Override 
   public int compareTo(Pipe other) { // Defines order 
     if (Math.abs(diameter - other.diameter) < TOLERANCE) return 0;
     if (diameter < other.diameter) return -1; 
     return 1;
  }
  @Override
  public String toString() {
     return("Diameter: " + diameter + " number: " + numberOfPipes);
  }
}