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https://github.com/paparazzi/paparazzi.git
synced 2026-05-17 23:54:34 +08:00
Pascal Brisset
49 lines
1.5 KiB
OCaml
49 lines
1.5 KiB
OCaml
(*
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* $Id$
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*
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* Displaying IGN Maps on a MapCanvas object
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*
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* Copyright (C) 2004-2006 ENAC, Pascal Brisset, Antoine Drouin
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*
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* This file is part of paparazzi.
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*
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* paparazzi is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* paparazzi is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with paparazzi; see the file COPYING. If not, write to
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* the Free Software Foundation, 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*
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*)
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module LL = Latlong
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let displayed_tiles = Hashtbl.create 41
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let mem_tile = fun t -> Hashtbl.mem displayed_tiles t.IGN.key
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let add_tile = fun t -> Hashtbl.add displayed_tiles t.IGN.key ()
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let opacity = 100 (* FIXME *)
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(** Displaying the tile around the given point *)
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let display_tile = fun (geomap:MapCanvas.widget) wgs84 ->
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let tile = IGN.tile_of_geo wgs84 in
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if not (mem_tile tile) then
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let jpg_file = IGN.get_tile tile in
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let (sx,sy) = IGN.tile_size in
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let pixbuf = GdkPixbuf.from_file jpg_file in
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let map = geomap#display_pixbuf ~opacity ((0,sx), tile.IGN.sw_corner) ((sy,0),tile.IGN.ne_corner) pixbuf in
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map#raise 1;
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add_tile tile
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