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osm.c
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osm.c
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/*
* viking -- GPS Data and Topo Analyzer, Explorer, and Manager
*
* Copyright (C) 2003-2005, Evan Battaglia <gtoevan@gmx.net>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gtk/gtk.h>
#include <glib/gi18n.h>
#ifdef HAVE_MATH_H
#include <math.h>
#endif
#include "viking.h"
#include "coords.h"
#include "vikcoord.h"
#include "mapcoord.h"
#include "vikmapslayer.h"
#include "vikwebtoolcenter.h"
#include "vikexttools.h"
#include "osm.h"
static guint8 osm_zoom ( gdouble mpp );
static gboolean osm_coord_to_mapcoord ( const VikCoord *src, gdouble xzoom, gdouble yzoom, MapCoord *dest );
static void osm_mapcoord_to_center_coord ( MapCoord *src, VikCoord *dest );
static int osm_maplint_download ( MapCoord *src, const gchar *dest_fn );
static int osm_mapnik_download ( MapCoord *src, const gchar *dest_fn );
static int osm_osmarender_download ( MapCoord *src, const gchar *dest_fn );
static int osm_cycle_download ( MapCoord *src, const gchar *dest_fn );
#ifdef VIK_CONFIG_BLUEMARBLE
static int bluemarble_download ( MapCoord *src, const gchar *dest_fn );
#endif
#ifdef VIK_CONFIG_OPENAERIAL
static int openaerialmap_download ( MapCoord *src, const gchar *dest_fn );
#endif
static DownloadOptions osm_options = { TRUE, NULL, 0, a_check_map_file };
/* initialisation */
void osm_init () {
VikMapsLayer_MapType osmarender_type = { 12, 256, 256, VIK_VIEWPORT_DRAWMODE_MERCATOR, osm_coord_to_mapcoord, osm_mapcoord_to_center_coord, osm_osmarender_download, &osm_options };
VikMapsLayer_MapType mapnik_type = { 13, 256, 256, VIK_VIEWPORT_DRAWMODE_MERCATOR, osm_coord_to_mapcoord, osm_mapcoord_to_center_coord, osm_mapnik_download, &osm_options };
VikMapsLayer_MapType maplint_type = { 14, 256, 256, VIK_VIEWPORT_DRAWMODE_MERCATOR, osm_coord_to_mapcoord, osm_mapcoord_to_center_coord, osm_maplint_download, &osm_options };
VikMapsLayer_MapType cycle_type = { 17, 256, 256, VIK_VIEWPORT_DRAWMODE_MERCATOR, osm_coord_to_mapcoord, osm_mapcoord_to_center_coord, osm_cycle_download, &osm_options };
#ifdef VIK_CONFIG_BLUEMARBLE
VikMapsLayer_MapType bluemarble_type = { 15, 256, 256, VIK_VIEWPORT_DRAWMODE_MERCATOR, osm_coord_to_mapcoord, osm_mapcoord_to_center_coord, bluemarble_download, &osm_options };
#endif
#ifdef VIK_CONFIG_OPENAERIAL
VikMapsLayer_MapType openaerialmap_type = { 20, 256, 256, VIK_VIEWPORT_DRAWMODE_MERCATOR, osm_coord_to_mapcoord, osm_mapcoord_to_center_coord, openaerialmap_download, &osm_options };
#endif
maps_layer_register_type("OpenStreetMap (Osmarender)", 12, &osmarender_type);
maps_layer_register_type("OpenStreetMap (Mapnik)", 13, &mapnik_type);
maps_layer_register_type("OpenStreetMap (Maplint)", 14, &maplint_type);
maps_layer_register_type("OpenStreetMap (Cycle)", 17, &cycle_type);
#ifdef VIK_CONFIG_BLUEMARBLE
maps_layer_register_type("BlueMarble", 15, &bluemarble_type);
#endif
#ifdef VIK_CONFIG_OPENAERIAL
maps_layer_register_type("OpenAerialMap", 20, &openaerialmap_type);
#endif
// Webtools
VikWebtoolCenter *webtool = NULL;
webtool = vik_webtool_center_new_with_members ( _("OSM (view)"), "http://openstreetmap.org/?lat=%s&lon=%s&zoom=%d&layers=B000FTF" );
vik_ext_tools_register ( VIK_EXT_TOOL ( webtool ) );
g_object_unref ( webtool );
webtool = vik_webtool_center_new_with_members ( _("OSM (edit)"), "http://www.openstreetmap.org/edit?lat=%s&lon=%s&zoom=%d" );
vik_ext_tools_register ( VIK_EXT_TOOL ( webtool ) );
g_object_unref ( webtool );
webtool = vik_webtool_center_new_with_members ( _("OSM (render)"), "http://www.informationfreeway.org/?lat=%s&lon=%s&zoom=%d&layers=B0000F000F" );
vik_ext_tools_register ( VIK_EXT_TOOL ( webtool ) );
g_object_unref ( webtool );
}
/* 1 << (x) is like a 2**(x) */
#define GZ(x) (1<<(x))
static const gdouble scale_mpps[] = { GZ(0), GZ(1), GZ(2), GZ(3), GZ(4), GZ(5), GZ(6), GZ(7), GZ(8), GZ(9),
GZ(10), GZ(11), GZ(12), GZ(13), GZ(14), GZ(15), GZ(16), GZ(17) };
static const gint num_scales = (sizeof(scale_mpps) / sizeof(scale_mpps[0]));
#define ERROR_MARGIN 0.01
guint8 osm_zoom ( gdouble mpp ) {
gint i;
for ( i = 0; i < num_scales; i++ ) {
if ( ABS(scale_mpps[i] - mpp) < ERROR_MARGIN )
return i;
}
return 255;
}
static gboolean osm_coord_to_mapcoord ( const VikCoord *src, gdouble xzoom, gdouble yzoom, MapCoord *dest )
{
g_assert ( src->mode == VIK_COORD_LATLON );
if ( xzoom != yzoom )
return FALSE;
dest->scale = osm_zoom ( xzoom );
if ( dest->scale == 255 )
return FALSE;
dest->x = (src->east_west + 180) / 360 * GZ(17) / xzoom;
dest->y = (180 - MERCLAT(src->north_south)) / 360 * GZ(17) / xzoom;
dest->z = 0;
return TRUE;
}
static void osm_mapcoord_to_center_coord ( MapCoord *src, VikCoord *dest )
{
gdouble socalled_mpp = GZ(src->scale);
dest->mode = VIK_COORD_LATLON;
dest->east_west = ((src->x+0.5) / GZ(17) * socalled_mpp * 360) - 180;
dest->north_south = DEMERCLAT(180 - ((src->y+0.5) / GZ(17) * socalled_mpp * 360));
}
/* Maplint tiles
* Ex: http://dev.openstreetmap.org/~ojw/Tiles/maplint.php/10/517/375.png
*/
static int osm_maplint_download ( MapCoord *src, const gchar *dest_fn )
{
int res = -1;
gchar *uri = g_strdup_printf ( "/Tiles/maplint.php/%d/%d/%d.png", 17-src->scale, src->x, src->y );
res = a_http_download_get_url ( "tah.openstreetmap.org", uri, dest_fn, &osm_options );
g_free ( uri );
return res;
}
static int osm_mapnik_download ( MapCoord *src, const gchar *dest_fn )
{
int res = -1;
gchar *uri = g_strdup_printf ( "/%d/%d/%d.png", 17-src->scale, src->x, src->y );
res = a_http_download_get_url ( "tile.openstreetmap.org", uri, dest_fn, &osm_options );
g_free ( uri );
return res;
}
static int osm_osmarender_download ( MapCoord *src, const gchar *dest_fn )
{
int res = -1;
gchar *uri = g_strdup_printf ( "/Tiles/tile/%d/%d/%d.png", 17-src->scale, src->x, src->y );
res = a_http_download_get_url ( "tah.openstreetmap.org", uri, dest_fn, &osm_options );
g_free ( uri );
return res;
}
#ifdef VIK_CONFIG_BLUEMARBLE
static int bluemarble_download ( MapCoord *src, const gchar *dest_fn )
{
int res = -1;
gchar *uri = g_strdup_printf ( "/com.modestmaps.bluemarble/%d-r%d-c%d.jpg", 17-src->scale, src->y, src->x );
res = a_http_download_get_url ( "s3.amazonaws.com", uri, dest_fn, &osm_options );
g_free ( uri );
return res;
}
#endif
#ifdef VIK_CONFIG_OPENAERIAL
static int openaerialmap_download ( MapCoord *src, const gchar *dest_fn )
{
int res = -1;
gchar *uri = g_strdup_printf ( "/tiles/1.0.0/openaerialmap-900913/%d/%d/%d.jpg", 17-src->scale, src->x, src->y );
res = a_http_download_get_url ( "tile.openaerialmap.org", uri, dest_fn, &osm_options );
g_free ( uri );
return res;
}
#endif
static int osm_cycle_download ( MapCoord *src, const gchar *dest_fn )
{
int res = -1;
gchar *uri = g_strdup_printf ( "/tiles/cycle/%d/%d/%d.png", 17-src->scale, src->x, src->y );
res = a_http_download_get_url ( "andy.sandbox.cloudmade.com", uri, dest_fn, &osm_options );
g_free ( uri );
return res;
}