Application: gvSIG desktop

      @Override

      public boolean equals(Object obj) {

          boolean res = super.equals(obj);

          if(res && obj instanceof Polygon3D){

              Polygon3D other = (Polygon3D)obj;

              if(this.getNumVertices() != other.getNumVertices()){

                  return false;

              }

            for (int i = 0; i < this.getNumVertices(); i++) {

                Coordinate coordinate = this.coordinates.get(i);

                Coordinate otherCoordinate = other.coordinates.get(i);

                if (otherCoordinate.getOrdinate(2) != coordinate.getOrdinate(2)) {

                    return false;

                }

            }

              if(this.getNumInteriorRings() != other.getNumInteriorRings()){

                  return false;

              }

              for(int i=0; i < this.getNumInteriorRings(); i++){

                  if(!other.getInteriorRing(i).equals(this.getInteriorRing(i))){

                      return false;

                  }

              }

              return true;

          } else {

              return false;

          }

      }