PointList.pde

public class PointList {
  
  private ArrayList<Point> points;
  private Point far;
  
  public PointList() {
    points = new ArrayList<Point>();
    far = new Point(0, 10000);
  }
  
  public Point getFar() {
    return far; 
  }
  
  public ArrayList<Point> getPoints() {
    return points; 
  }
  
  public boolean contains(Point p) {
    return points.contains(p);
  }
  
  
  
  public void addPoint(Point p) {
    points.add(p);
    if (p.getY() > far.getY()) {
      far.setY(p.getY() + 1); 
    }
  }
  
  public boolean removePoint(Point p) {
    p.deleteEdges();
    return points.remove(p);
  } 
  
  public ArrayList<HalfEdge> getAllStructures() {
    int num = points.size();
    ArrayList<HalfEdge> struct = new ArrayList<HalfEdge>();
    for (int i = 0; i < num; i++) {
      if (points.get(i).getRef() == null) { continue; }
      if (points.get(i).getRef().getCounted() == false) {
        points.get(i).getRef().count();
        struct.add(points.get(i).getRef());
      }
    }
    num = struct.size();
    for (int i = 0; i < num; i++) {
      struct.get(i).reset(); 
    }
    return struct;
  }
  
  public HalfEdge getHalfEdgeBySinglePoint(float x, float y, float distance) {
    ArrayList<HalfEdge> pieces = getAllStructures();
    int num = pieces.size();
    HalfEdge temp = null;
    for (int i = 0; i < num; i++) {
      temp = pieces.get(i).findStart(x,y,distance, far);
      if (temp != null) { return temp; }
    } 
    return null;
  }
  
  public HalfEdge getHalfEdge(Point p, Point q) {
    //System.out.println(p);
    //System.out.println(q);
    int num = points.size();
    int id = -1;
    for (int i = 0; i < num; i++) {
      if (p == points.get(i)) {
        id = i;
      }
    }
    HalfEdge first = p.getRef();
    if (first == null) { return null; }
    if (first.gettwin().getOrigin().equals(q)) { return first; }
    HalfEdge temp = first.gettwin().getnext();
    while (temp != first) {
      if (temp.gettwin().getOrigin().equals(q)) {
        return temp; 
      }
      temp = temp.gettwin().getnext();
    }
    return null;
  }
  
  public boolean intersectsSomething(Point p, Point q) {
    ArrayList<HalfEdge> structures = getAllStructures();
    int num = structures.size();
    for (int i = 0; i < num; i++) {
      if (structures.get(i).intersectsStructure(p,q) == true) {
        return true; 
      }
    } 
    return false;
  }
   
}