code: public boolean isInside(double testx, double testy)
      {
          if (!bounds.isInside(testx, testy))
          {
              return false;
          }
          return isRawHit(points, testx, testy);
      }
docs: Returns true if point is inside a polygon.
  @param testx
  @param testy
  @return
  @see <a href="http://www.ecse.rpi.edu/Homepages/wrf/Research/Short_Notes/pnpoly.html">PNPOLY - Point Inclusion in Polygon Test W. Randolph Franklin (WRF)</a>