X-Git-Url: https://git.street.me.uk/andy/viking.git/blobdiff_plain/056e8bd1e118978e180badd09803925319124a05..80471a6a905e00bf80ad04fa2061f88ea81f15cb:/src/google.c diff --git a/src/google.c b/src/google.c index 01613774..949f38e0 100644 --- a/src/google.c +++ b/src/google.c @@ -18,139 +18,14 @@ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * */ +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include -#include -#include -#include -#include "coords.h" -#include "vikcoord.h" -#include "mapcoord.h" -#include "download.h" -#include "globals.h" #include "google.h" -#include "vikmapslayer.h" -#define GOOGLE_VERSION "w2.46" -#define GOOGLE_TRANS_VERSION "w2t.47" -#define GOOGLE_KH_VERSION "17" void google_init () { - VikMapsLayer_MapType google_1 = { 7, 256, 256, VIK_VIEWPORT_DRAWMODE_MERCATOR, google_coord_to_mapcoord, google_mapcoord_to_center_coord, google_download }; - VikMapsLayer_MapType google_2 = { 10, 256, 256, VIK_VIEWPORT_DRAWMODE_MERCATOR, google_coord_to_mapcoord, google_mapcoord_to_center_coord, google_trans_download }; - VikMapsLayer_MapType google_3 = { 11, 256, 256, VIK_VIEWPORT_DRAWMODE_MERCATOR, google_coord_to_mapcoord, google_mapcoord_to_center_coord, google_kh_download }; - - maps_layer_register_type("Google Maps", 7, &google_1); - maps_layer_register_type("Transparent Google Maps", 10, &google_2); - maps_layer_register_type("Google Satellite Images", 11, &google_3); -} - -/* 1 << (x) is like a 2**(x) */ -#define GZ(x) ((1<mode == VIK_COORD_LATLON ); - - if ( xzoom != yzoom ) - return FALSE; - - dest->scale = google_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; -} - -void google_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)); -} - -static void real_google_download ( MapCoord *src, const gchar *dest_fn, const char *verstr ) -{ - gchar *uri = g_strdup_printf ( "/mt?v=%s&x=%d&y=%d&zoom=%d", verstr, src->x, src->y, src->scale ); - a_http_download_get_url ( "mt.google.com", uri, dest_fn ); - g_free ( uri ); -} - -void google_download ( MapCoord *src, const gchar *dest_fn ) -{ - real_google_download ( src, dest_fn, GOOGLE_VERSION ); -} - -void google_trans_download ( MapCoord *src, const gchar *dest_fn ) -{ - real_google_download ( src, dest_fn, GOOGLE_TRANS_VERSION ); -} - -static char *kh_encode(guint32 x, guint32 y, guint8 scale) -{ - gchar *buf = g_malloc ( (20-scale)*sizeof(gchar) ); - guint32 ya = 1 << (17 - scale); - gint8 i, j; - - if (y < 0 || (ya-1 < y)) { - strcpy(buf,"tqq"); /* BAD */ - return buf; - } - if (x < 0 || ya-1 < x) { - x %= ya; - if (x < 0) - x += ya; - } - - buf[0] = 't'; - for (j = 1, i = 16; i >= scale; i--, j++) { - ya /= 2; - if (y < ya) { - if (x < ya) - buf[j]='q'; - else { - buf[j]='r'; - x -= ya; - } - } else { - if (x < ya) { - buf[j] = 't'; - y -= ya; - } else { - buf[j] = 's'; - x -= ya; - y -= ya; - } - } - } - buf[j] = '\0'; - return buf; -} - -void google_kh_download ( MapCoord *src, const gchar *dest_fn ) -{ - gchar *khenc = kh_encode( src->x, src->y, src->scale ); - gchar *uri = g_strdup_printf ( "/kh?v=%s&t=%s", GOOGLE_KH_VERSION, khenc ); - g_free ( khenc ); - a_http_download_get_url ( "kh.google.com", uri, dest_fn ); - g_free ( uri ); }