This class relies on deprecated contour finding algorithms. The output of the new contour finding algorithms are
much more practical to work as they split up contours into two separate, disambiguous, concepts that can be retrieved
individually. TLcdPolylineContourFinder finds contour lines of equal height, much like this
class, except that it doesn't close the shapes to represent an area. TLcdComplexPolygonContourFinder finds
complex polygons instead of the simple polygons of this class. This allows them to model interval areas with holes.
This class has been kept for compatibility reasons with LuciadMap