Face.pde

public class Face {
  
  HalfEdge outerComponent;
  ArrayList<HalfEdge> innerComponents;
  
  public Face(HalfEdge ref, PointList points) {
    if (CompGeo.signedAreaHE(ref) < 0) { outerComponent = ref; }
    else { outerComponent = CompGeo.findTightOuterBoundary(ref, points); }
    innerComponents = CompGeo.findFriends(outerComponent, points);
  }
  
  
  public void daColoring(int r, int g, int b, PointList pl, float x, float y) {
    Point p = null;
    stroke(r,g,b);
    float minX = 0;
    float maxX = x;
    float minY = 0;
    float maxY = y;
    if (outerComponent != null) {
      minX = outerComponent.getOrigin().getX();
      maxX = outerComponent.getOrigin().getX();
      minY = outerComponent.getOrigin().getY();
      maxY = outerComponent.getOrigin().getY();
      HalfEdge temp = outerComponent.getnext();
      while (temp != outerComponent) {
        p = temp.getOrigin();
        if (p.getX() < minX) { minX = p.getX(); }
        if (p.getX() > maxX) { maxX = p.getX(); }
        if (p.getY() < minY) { minY = p.getY(); }
        if (p.getY() > maxY) { maxY = p.getY(); }
        temp = temp.getnext();
      }
    }
    for (int i = (int) minX; i < (int)maxX; i++) {
      for (int j = (int) minY; j < (int)maxY; j++) {
        p = new Point(i, j);
        if (inSpecificFace(p, pl)) {
          point(i,j);
          //System.out.println(p);
        }
      }
    }
    stroke(0);
  }
  
  public boolean inSpecificFace(Point a, PointList pl) {
    if ((outerComponent == null) || (CompGeo.inside(outerComponent, a, pl.getFar()))) {
      //System.out.println(a); 
      int num = innerComponents.size();
      for (int i = 0; i < num; i++) {
        if (inAnInner(innerComponents.get(i), a, pl)) {
          return false;
        } 
      }
      return true;
    }
    return false;
  }
  
  public boolean inAnInner(HalfEdge inner, Point a, PointList pl) {
    if (CompGeo.signedAreaHE(inner) == 0) { return false; }
    if (CompGeo.inside(inner, a, pl.getFar())) { return true; }
    return false;
  }
  
  public void printFace() {
    //System.out.println("Outer Face:");
    if (outerComponent != null) { outerComponent.printRNext(); } 
    //System.out.println();
    //System.out.println("Inner Components:");
    int num = innerComponents.size();
    for (int i = 0; i < num; i++) {
      //System.out.println("COMPONENT[" + i + "]");
      innerComponents.get(i).printRNext();
    }
    //System.out.println();
  }
  
}