f392d00.a

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-- F392D00.A
--
--                             Grant of Unlimited Rights
--
--     Under contracts F33600-87-D-0337, F33600-84-D-0280, MDA903-79-C-0687,
--     F08630-91-C-0015, and DCA100-97-D-0025, the U.S. Government obtained 
--     unlimited rights in the software and documentation contained herein.
--     Unlimited rights are defined in DFAR 252.227-7013(a)(19).  By making 
--     this public release, the Government intends to confer upon all 
--     recipients unlimited rights  equal to those held by the Government.  
--     These rights include rights to use, duplicate, release or disclose the 
--     released technical data and computer software in whole or in part, in 
--     any manner and for any purpose whatsoever, and to have or permit others 
--     to do so.
--
--                                    DISCLAIMER
--
--     ALL MATERIALS OR INFORMATION HEREIN RELEASED, MADE AVAILABLE OR
--     DISCLOSED ARE AS IS.  THE GOVERNMENT MAKES NO EXPRESS OR IMPLIED 
--     WARRANTY AS TO ANY MATTER WHATSOEVER, INCLUDING THE CONDITIONS OF THE
--     SOFTWARE, DOCUMENTATION OR OTHER INFORMATION RELEASED, MADE AVAILABLE 
--     OR DISCLOSED, OR THE OWNERSHIP, MERCHANTABILITY, OR FITNESS FOR A
--     PARTICULAR PURPOSE OF SAID MATERIAL.
--*
--
-- FOUNDATION DESCRIPTION:
--      This foundation declares parent tagged types and subprograms for use 
--      in tests covering dispatching operations.
--
-- CHANGE HISTORY:
--      06 Dec 94   SAIC    ACVC 2.0
--
--!

package F392D00 is

   type Depth_Of_Field is range 5 .. 100;  
   type Shutter_Speed  is (One, Two_Fifty, Four_Hundred, Thousand);

   type Remote_Camera is tagged record
      DOF    : Depth_Of_Field := 10;
      Shutter: Shutter_Speed  := One;
   end record;

   -- ...Other declarations.

   procedure Focus (C     : in out Remote_Camera;
                    Depth : in     Depth_Of_Field);

   procedure Self_Test (C: in out Remote_Camera'Class);

   -- ...Other operations.

private

   procedure Set_Shutter_Speed (C     : in out Remote_Camera;
                                Speed : in     Shutter_Speed);

   -- For the basic remote camera, shutter speed might be set as a function of
   -- focus perhaps, thus it is declared as a private operation (usable
   -- only internally within the abstraction).


end F392D00;


     --==================================================================--


package body F392D00 is

   procedure Focus (C     : in out Remote_Camera;
                    Depth : in     Depth_Of_Field) is
   begin
      -- Artificial for testing purposes.
      C.DOF := 46;
   end Focus;

   -----------------------------------------------------------
   procedure Set_Shutter_Speed (C     : in out Remote_Camera;
                                Speed : in     Shutter_Speed) is
   begin
      -- Artificial for testing purposes.
      C.Shutter := Thousand;
   end Set_Shutter_Speed;

   -----------------------------------------------------------
   procedure Self_Test (C: in out Remote_Camera'Class) is
      TC_Dummy_Depth : constant Depth_Of_Field := 23;
      TC_Dummy_Speed : constant Shutter_Speed  := Four_Hundred;
   begin

      -- Test focus at various depths:
      Focus(C, TC_Dummy_Depth);
      -- ...Additional calls to Focus.

      -- Test various shutter speeds:
      Set_Shutter_Speed(C, TC_Dummy_Speed);
      -- ...Additional calls to Set_Shutter_Speed.

   end Self_Test;

end F392D00;