package openGL.Texture.Coordinates
--
-- Provides openGL texture co-ordinates.
--
is

   ------
   --- 2D
   --

   type coordinate_Generator is abstract tagged null record;

   function to_Coordinates (Self : in coordinate_Generator;   the_Vertices : access Sites) return Coordinates_2D
                            is abstract;


   type xz_Generator is new coordinate_Generator with
      record
         Normalise : texture_Transform_2D;
         Tile      : texture_Transform_2D;
      end record;

   overriding
   function to_Coordinates (Self : in xz_Generator;   the_Vertices : access Sites) return Coordinates_2D;


   type xy_Generator is new coordinate_Generator with
      record
         Normalise : texture_Transform_2D;
         Tile      : texture_Transform_2D;
      end record;

   overriding
   function to_Coordinates (Self : in xy_Generator;   the_Vertices : access Sites) return Coordinates_2D;


   type zy_Generator is new coordinate_Generator with
      record
         Normalise : texture_Transform_2D;
         Tile      : texture_Transform_2D;
      end record;

   overriding
   function to_Coordinates (Self : in zy_Generator;   the_Vertices : access Sites) return Coordinates_2D;


   type mercator_Generator is new coordinate_Generator with null record;

   overriding
   function to_Coordinates (Self : in mercator_Generator;   the_Vertices : access Sites) return Coordinates_2D;


end openGL.Texture.Coordinates;