Add initial prototype.

3-mid/opengl/source/lean/model/opengl-model-hexagon_column-lit_textured_rounded.ads

@@ -0,0 +1,61 @@
+with
+     openGL.Geometry,
+     openGL.Texture;
+
+
+package openGL.Model.hexagon_Column.lit_textured_rounded
+--
+--  Models a lit, colored and textured column with six rounded sides.
+--
+--  The shaft of the column appears rounded, whereas the top and bottom appear as hexagons.
+--
+is
+   type Item is new Model.hexagon_Column.item with private;
+   type View is access all Item'Class;
+
+
+   ---------
+   --- Faces
+   --
+
+   type hex_Face is
+      record
+         Texture : asset_Name := null_Asset;          -- The texture to be applied to the face.
+      end record;
+
+
+   type shaft_Face is
+      record
+         Texture : asset_Name := openGL.null_Asset;   -- The texture to be applied to the shaft.
+      end record;
+
+
+   ---------
+   --- Forge
+   --
+
+   function new_hexagon_Column (Radius : in Real;
+                                Height : in Real;
+                                Upper,
+                                Lower  : in hex_Face;
+                                Shaft  : in shaft_Face) return View;
+
+   --------------
+   --- Attributes
+   --
+
+   overriding
+   function to_GL_Geometries (Self : access Item;   Textures : access Texture.name_Map_of_texture'Class;
+                                                    Fonts    : in     Font.font_id_Map_of_font) return Geometry.views;
+
+
+private
+
+   type Item is new Model.hexagon_Column.item with
+      record
+         upper_Face,
+         lower_Face : hex_Face;
+         Shaft      : shaft_Face;
+      end record;
+
+end openGL.Model.hexagon_Column.lit_textured_rounded;