benchmarks/polygons/java/code/PointDouble.java

   1
   2 import java.util.ArrayList;
   3 import java.util.Random;
   4
   5 /**
   6  * Represents a 2d point with double coordinates
   7  *
   8  * @author Johan
   9  */
  10 public class PointDouble {
  11
  12     double x;
  13     double y;
  14
  15     public PointDouble() {
  16         this(0.0d, 0.0d);
  17     }
  18
  19     public PointDouble(double x, double y) {
  20         this.x = x;
  21         this.y = y;
  22     }
  23
  24     public double getX() {
  25         return this.x;
  26     }
  27
  28     public double getY() {
  29         return this.y;
  30     }
  31
  32     @Override
  33     public boolean equals(Object obj) {
  34         if (obj == null || getClass() != obj.getClass()) {
  35             return false;
  36         }
  37         final PointDouble other = (PointDouble) obj;
  38         if (Double.doubleToLongBits(this.x) != Double.doubleToLongBits(other.x)) {
  39             return false;
  40         }
  41         if (Double.doubleToLongBits(this.y) != Double.doubleToLongBits(other.y)) {
  42             return false;
  43         }
  44         return true;
  45     }
  46
  47     /**
  48      * returns a array of n points on a circle
  49      */
  50     public static ArrayList<PointDouble> getNPointsOnCircle(double radius, int n) {
  51         ArrayList<PointDouble> points = new ArrayList<>();
  52         Random generator = new Random(0);
  53         for(int i = 0; i < n; i++){
  54         double angle = generator.nextFloat() * Math.PI * 2;
  55                 PointDouble p = new PointDouble(Math.cos(angle) * radius, Math.sin(angle) * radius);
  56         points.add(p);
  57         }
  58         return points;
  59     }
  60 }