Sorting an array

Processing Coding Questions
5

Thank you as always GoToLoop!

The original code example now works with a new understanding of comparators gleaned from your examples (and some doc research).

import java.util.Comparator;

void setup(){
  ArrayList<PVector> points = new ArrayList();
  PVector p0 = new PVector(100, -100);
  PVector p1 = new PVector(-130, 65);
  PVector p2 = new PVector(135, 155);
  points.add( p0 );
  points.add( p1 );
  points.add( p2 );
  
  println(points);
  points.sort(pvHeading);
  println(points);
}

public static Comparator<PVector> pvHeading = new Comparator<PVector>() {         
  @Override         
  public int compare(PVector a, PVector b) {             
    return (int) Math.signum(a.heading() - b.heading());
  }     
};
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