------------------------------------------------------------------------------
--                                                                          --
--                              DEMO CANVAS                                 --
--                                                                          --
--                              BASE OFFSET                                 --
--                                                                          --
--                               S p e c                                    --
--                                                                          --
-- Copyright (C) 2024                                                       --
-- Mario Blunk / Blunk electronic                                           --
-- Buchfinkenweg 3 / 99097 Erfurt / Germany                                 --
--                                                                          --
-- This library is free software;  you can redistribute it and/or modify it --
-- under terms of the  GNU General Public License  as published by the Free --
-- Software  Foundation;  either version 3,  or (at your  option) any later --
-- version. This library is distributed in the hope that it will be useful, --
-- but WITHOUT ANY WARRANTY;  without even the implied warranty of MERCHAN- --
-- TABILITY or FITNESS FOR A PARTICULAR PURPOSE.                            --
--                                                                          --
-- You should have received a copy of the GNU General Public License and    --
-- a copy of the GCC Runtime Library Exception along with this program;     --
-- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
-- <http://www.gnu.org/licenses/>.                                          --
------------------------------------------------------------------------------

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--   The two letters "CS" indicate a "construction site" where things are not
--   finished yet or intended for the future.

--   Please send your questions and comments to:
--
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with demo_logical_pixels;			use demo_logical_pixels;


package demo_base_offset is

	-- The place on the canvas where the model 
	-- coordinates system has its origin.
	-- It is a global variable. We call it "base-offset":
	F : type_logical_pixels_vector;

	-- Sets the global base-offset F according to the current
	-- bounding-box and the maximal allowed zoom factor:
	procedure set_base_offset;
	
end demo_base_offset;

