Add initial prototype.

3-mid/opengl/applet/demo/lights/render_lighting/launch_render_lighting.adb

@@ -0,0 +1,104 @@
+with
+     openGL.Light,
+     openGL.Visual,
+     openGL.Model.Sphere.lit_colored_textured,
+     openGL.Model.Sphere.lit_colored,
+     openGL.Palette,
+     openGL.Demo;
+
+
+procedure launch_render_Lighting
+--
+--  Exercise the rendering of lit models.
+--
+is
+   use openGL,
+       openGL.Model,
+       openGL.Math,
+       openGL.linear_Algebra_3d;
+
+   the_Texture : constant asset_Name := to_Asset ("assets/opengl/texture/Face1.bmp");
+begin
+   Demo.print_Usage ("To see the light move, disable 'Sync to VBlank'.");
+   Demo.define ("openGL 'render Lighting' Demo");
+   Demo.Camera.Position_is ([0.0, 0.0, 10.0],
+                            y_Rotation_from (to_Radians (0.0)));
+   declare
+      use openGL.Palette;
+
+      --  The Models.
+      --
+      the_Ball_1_Model : constant Model.Sphere.lit_colored_textured.view
+        := openGL.Model.Sphere.lit_colored_textured.new_Sphere (Radius => 1.0,
+                                                                Image  => the_Texture);
+      the_Ball_2_Model : constant Model.Sphere.lit_colored.view
+        := openGL.Model.Sphere.lit_colored.new_Sphere (Radius => 1.0,
+                                                       Color  => (light_Apricot, Opaque));
+
+      --  The Visuals.
+      --
+      use openGL.Visual.Forge;
+
+      the_Visuals : constant openGL.Visual.views := [1 => new_Visual (the_Ball_1_Model.all'Access),
+                                                     2 => new_Visual (the_Ball_2_Model.all'Access)];
+
+      the_Light : openGL.Light.item := Demo.Renderer.new_Light;
+
+      -- Light movement.
+      --
+      initial_Site : constant openGL.Vector_3 := [-10_000.0, 0.0, 10_000.0];
+      site_Delta   :          openGL.Vector_3 := [      1.0, 0.0,      0.0];
+
+   begin
+      the_Visuals (1).Site_is ([0.0,  1.0, 0.0]);
+      the_Visuals (2).Site_is ([0.0, -1.0, 0.0]);
+
+      -- Set the lights initial position to far behind and far to the left.
+      --
+      the_Light.Site_is (initial_Site);
+      Demo.Renderer.set (the_Light);
+
+
+      --  Main loop.
+      --
+      while not Demo.Done
+      loop
+         -- Handle user commands.
+         --
+         Demo.Dolly.evolve;
+         Demo.Done := Demo.Dolly.quit_Requested;
+
+         -- Move the light.
+         --
+         if    the_Light.Site (1) >  10_000.0
+         then
+            site_Delta (1) := -1.0;
+            the_Light.Color_is (Palette.dark_Green);
+
+         elsif the_Light.Site (1) < -10_000.0
+         then
+            site_Delta (1) := 1.0;
+
+            the_Light.Color_is (openGL.Palette.dark_Red);
+         end if;
+
+         the_Light.Site_is (the_Light.Site + site_Delta);
+
+         Demo.Renderer.set (the_Light);
+
+         --  Render the sprites.
+         --
+         Demo.Camera.render (the_Visuals);
+
+         while not Demo.Camera.cull_Completed
+         loop
+            delay Duration'Small;
+         end loop;
+
+         Demo.Renderer.render;
+         Demo.FPS_Counter.increment;    -- Frames per second display.
+      end loop;
+   end;
+
+   Demo.destroy;
+end launch_render_Lighting;

3-mid/opengl/applet/demo/lights/render_lighting/render_lighting.gpr

@@ -0,0 +1,16 @@
+with
+     "opengl_demo",
+     "lace_shared"; 
+
+project render_Lighting
+is
+   for Object_Dir use "build";
+   for Exec_Dir   use ".";
+   for Main       use ("launch_render_lighting.adb");
+
+   package Ide      renames Lace_shared.Ide;
+   package Builder  renames Lace_shared.Builder;
+   package Compiler renames Lace_shared.Compiler;
+   package Binder   renames Lace_shared.Binder;
+
+end render_Lighting;