From: Pierre-Luc Beaudoin Date: Wed, 20 Aug 2008 03:55:38 +0000 (-0400) Subject: Zoom X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f6dd3c4cbe43dfa614ff98ac57229521ec536f43;p=libchamplain Zoom --- diff --git a/Makefile.in b/Makefile.in deleted file mode 100644 index 72df09e..0000000 --- a/Makefile.in +++ /dev/null @@ -1,619 +0,0 @@ -# Makefile.in generated by automake 1.9.6 from Makefile.am. -# @configure_input@ - -# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, -# 2003, 2004, 2005 Free Software Foundation, Inc. -# This Makefile.in is free software; the Free Software Foundation -# gives unlimited permission to copy and/or distribute it, -# with or without modifications, as long as this notice is preserved. - -# This program is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY, to the extent permitted by law; without -# even the implied warranty of MERCHANTABILITY or FITNESS FOR A -# PARTICULAR PURPOSE. - -@SET_MAKE@ -srcdir = @srcdir@ -top_srcdir = @top_srcdir@ -VPATH = @srcdir@ -pkgdatadir = $(datadir)/@PACKAGE@ -pkglibdir = $(libdir)/@PACKAGE@ -pkgincludedir = $(includedir)/@PACKAGE@ -top_builddir = . -am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd -INSTALL = @INSTALL@ -install_sh_DATA = $(install_sh) -c -m 644 -install_sh_PROGRAM = $(install_sh) -c -install_sh_SCRIPT = $(install_sh) -c -INSTALL_HEADER = $(INSTALL_DATA) -transform = $(program_transform_name) -NORMAL_INSTALL = : -PRE_INSTALL = : -POST_INSTALL = : -NORMAL_UNINSTALL = : -PRE_UNINSTALL = : -POST_UNINSTALL = : -build_triplet = @build@ -host_triplet = @host@ -DIST_COMMON = README $(am__configure_deps) $(srcdir)/Makefile.am \ - $(srcdir)/Makefile.in $(srcdir)/config.h.in \ - $(top_srcdir)/configure AUTHORS COPYING ChangeLog INSTALL NEWS \ - config.guess config.sub depcomp install-sh ltmain.sh missing -subdir = . -ACLOCAL_M4 = $(top_srcdir)/aclocal.m4 -am__aclocal_m4_deps = $(top_srcdir)/configure.ac -am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \ - $(ACLOCAL_M4) -am__CONFIG_DISTCLEAN_FILES = config.status config.cache config.log \ - configure.lineno configure.status.lineno -mkinstalldirs = $(install_sh) -d -CONFIG_HEADER = config.h -CONFIG_CLEAN_FILES = -SOURCES = -DIST_SOURCES = -RECURSIVE_TARGETS = all-recursive check-recursive dvi-recursive \ - html-recursive info-recursive install-data-recursive \ - install-exec-recursive install-info-recursive \ - install-recursive installcheck-recursive installdirs-recursive \ - pdf-recursive ps-recursive uninstall-info-recursive \ - uninstall-recursive -ETAGS = etags -CTAGS = ctags -DIST_SUBDIRS = $(SUBDIRS) -DISTFILES = $(DIST_COMMON) $(DIST_SOURCES) $(TEXINFOS) $(EXTRA_DIST) -distdir = $(PACKAGE)-$(VERSION) -top_distdir = $(distdir) -am__remove_distdir = \ - { test ! 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pdf pdf-am ps ps-am tags uninstall uninstall-am \ - uninstall-binPROGRAMS uninstall-info-am - - -champlain-marshal.h: $(CHAMPLAIN_MARSHAL_LIST) - @GLIB_GENMARSHAL@ --header --prefix=champlain_marshal $< > $(CHAMPLAIN_MARSHAL).h - -champlain-marshal.c: $(CHAMPLAIN_MARSHAL_LIST) - @GLIB_GENMARSHAL@ --body --prefix=champlain_marshal $< > $(CHAMPLAIN_MARSHAL).c -# Tell versions [3.59,3.63) of GNU make to not export all variables. -# Otherwise a system limit (for SysV at least) may be exceeded. -.NOEXPORT: diff --git a/src/champlainview.c b/src/champlainview.c index f4925d0..8093661 100644 --- a/src/champlainview.c +++ b/src/champlainview.c @@ -112,14 +112,14 @@ void viewport_x_changed_cb(GObject *gobject, } static void -view_size_allocated_cb (GtkWidget *view, GtkAllocation *allocation, ChamplainView *champlainView) +resize_viewport(ChamplainView *champlainView) { gdouble lower, upper; TidyAdjustment *hadjust, *vadjust; ChamplainViewPrivate *priv = CHAMPLAIN_VIEW_GET_PRIVATE (champlainView); - clutter_actor_set_size (priv->fingerScroll, allocation->width, allocation->height); + clutter_actor_set_size (priv->fingerScroll, priv->viewportSize.width, priv->viewportSize.height); g_object_set (G_OBJECT (priv->viewport), "sync-adjustments", FALSE, NULL); @@ -127,19 +127,28 @@ view_size_allocated_cb (GtkWidget *view, GtkAllocation *allocation, ChamplainVie tidy_adjustment_get_values (hadjust, NULL, &lower, &upper, NULL, NULL, NULL); lower = 0; - upper = zoom_level_get_width(priv->map->current_level) - allocation->width; + upper = zoom_level_get_width(priv->map->current_level) - priv->viewportSize.width; g_object_set (hadjust, "lower", lower, "upper", upper, "step-increment", 1.0, "elastic", TRUE, NULL); tidy_adjustment_get_values (vadjust, NULL, &lower, &upper, NULL, NULL, NULL); lower = 0; - upper = zoom_level_get_height(priv->map->current_level) - allocation->height; + upper = zoom_level_get_height(priv->map->current_level) - priv->viewportSize.height; g_object_set (vadjust, "lower", lower, "upper", upper, "step-increment", 1.0, "elastic", TRUE, NULL); - + + g_print("%d, %d, %d\n", zoom_level_get_width(priv->map->current_level), zoom_level_get_height(priv->map->current_level), sizeof(guint)); +} + +static void +view_size_allocated_cb (GtkWidget *view, GtkAllocation *allocation, ChamplainView *champlainView) +{ + ChamplainViewPrivate *priv = CHAMPLAIN_VIEW_GET_PRIVATE (champlainView); + priv->viewportSize.width = allocation->width; priv->viewportSize.height = allocation->height; + resize_viewport(champlainView); map_load_visible_tiles (priv->map, priv->viewportSize); } @@ -167,9 +176,7 @@ champlain_view_new () // Setup viewport priv->viewport = tidy_viewport_new (); - ClutterActor* group = clutter_group_new(); - clutter_container_add_actor (CLUTTER_CONTAINER (priv->viewport), group); g_signal_connect (priv->viewport, "notify::x-origin", G_CALLBACK (viewport_x_changed_cb), @@ -182,9 +189,8 @@ champlain_view_new () clutter_container_add_actor (CLUTTER_CONTAINER (stage), priv->fingerScroll); priv->map = map_new(CHAMPLAIN_MAP_SOURCE_OPENSTREETMAP);//OPENSTREETMAP - map_load(priv->map, 4); - clutter_container_add_actor (CLUTTER_CONTAINER (group), priv->map->current_level->group); - clutter_actor_show (group); + map_load_level(priv->map, 2); + clutter_container_add_actor (CLUTTER_CONTAINER (priv->viewport), priv->map->current_level->group); return GTK_WIDGET (view); } @@ -198,8 +204,51 @@ champlain_view_center_on (ChamplainView *champlainView, gdouble longitude, gdoub x = priv->map->longitude_to_x(priv->map, longitude, priv->map->current_level->level); y = priv->map->latitude_to_y(priv->map, latitude, priv->map->current_level->level); - ChamplainRect rect; - clutter_actor_get_size(priv->viewport, &rect.width, &rect.height); - - tidy_viewport_set_origin(TIDY_VIEWPORT(priv->viewport), x - rect.width/2.0, y - rect.height/2.0, 0); + tidy_viewport_set_origin(TIDY_VIEWPORT(priv->viewport), x - priv->viewportSize.width/2.0, y - priv->viewportSize.height/2.0, 0); +} + +void +champlain_view_zoom_in (ChamplainView *champlainView) +{ + ChamplainViewPrivate *priv = CHAMPLAIN_VIEW_GET_PRIVATE (champlainView); + ClutterActor * group = priv->map->current_level->group; + if(map_zoom_in(priv->map)) + { + gint level = priv->map->current_level->level; + g_print("Zoom: %d\n", level); + gdouble lon = priv->map->x_to_longitude(priv->map, priv->viewportSize.x + priv->viewportSize.width/2.0, level); + gdouble lat = priv->map->y_to_latitude(priv->map, priv->viewportSize.y + priv->viewportSize.height/2.0, level); + level++; + gdouble x = priv->map->longitude_to_x(priv->map, lon, level); + gdouble y = priv->map->latitude_to_y(priv->map, lat, level); + + resize_viewport(champlainView); + clutter_container_remove_actor (CLUTTER_CONTAINER (priv->viewport), group); + clutter_container_add_actor (CLUTTER_CONTAINER (priv->viewport), priv->map->current_level->group); + + tidy_viewport_set_origin(TIDY_VIEWPORT(priv->viewport), x - priv->viewportSize.width/2.0, y - priv->viewportSize.height/2.0, 0); + } +} + +void +champlain_view_zoom_out (ChamplainView *champlainView) +{ + ChamplainViewPrivate *priv = CHAMPLAIN_VIEW_GET_PRIVATE (champlainView); + ClutterActor * group = priv->map->current_level->group; + if(map_zoom_out(priv->map)) + { + gint level = priv->map->current_level->level; + g_print("Zoom: %d\n", level); + gdouble lon = priv->map->x_to_longitude(priv->map, priv->viewportSize.x + priv->viewportSize.width/2.0, level); + gdouble lat = priv->map->y_to_latitude(priv->map, priv->viewportSize.y + priv->viewportSize.height/2.0, level); + level--; + gdouble x = priv->map->longitude_to_x(priv->map, lon, level); + gdouble y = priv->map->latitude_to_y(priv->map, lat, level); + + resize_viewport(champlainView); + clutter_container_remove_actor (CLUTTER_CONTAINER (priv->viewport), group); + clutter_container_add_actor (CLUTTER_CONTAINER (priv->viewport), priv->map->current_level->group); + + tidy_viewport_set_origin(TIDY_VIEWPORT(priv->viewport), x - priv->viewportSize.width/2.0, y - priv->viewportSize.height/2.0, 0); + } } diff --git a/src/champlainview.h b/src/champlainview.h index c665948..94508a3 100644 --- a/src/champlainview.h +++ b/src/champlainview.h @@ -60,4 +60,6 @@ CHAMPLAIN_API GtkWidget *champlain_view_new (void); CHAMPLAIN_API void champlain_view_center_on (ChamplainView *view, gdouble longitude, gdouble latitude); +CHAMPLAIN_API void champlain_view_zoom_in (ChamplainView *champlainView); + #endif diff --git a/src/launcher.c b/src/launcher.c index 0e1bb21..8d890e1 100644 --- a/src/launcher.c +++ b/src/launcher.c @@ -44,6 +44,18 @@ go_to_cambridge (GtkWidget * widget, ChamplainView* view) champlain_view_center_on(view, 0.1258, 52.2048); } +static void +zoom_in (GtkWidget * widget, ChamplainView* view) +{ + champlain_view_zoom_in(view); +} + +static void +zoom_out (GtkWidget * widget, ChamplainView* view) +{ + champlain_view_zoom_out(view); +} + int main (int argc, char *argv[]) { @@ -80,6 +92,18 @@ main (int argc, char *argv[]) bbox = gtk_hbutton_box_new (); gtk_button_box_set_layout (GTK_BUTTON_BOX(bbox), GTK_BUTTONBOX_START); gtk_button_box_set_spacing (GTK_BUTTON_BOX(bbox), 10); + button = gtk_button_new_from_stock (GTK_STOCK_ZOOM_IN); + g_signal_connect (button, + "clicked", + G_CALLBACK (zoom_in), + widget); + gtk_container_add (GTK_CONTAINER (bbox), button); + button = gtk_button_new_from_stock (GTK_STOCK_ZOOM_OUT); + g_signal_connect (button, + "clicked", + G_CALLBACK (zoom_out), + widget); + gtk_container_add (GTK_CONTAINER (bbox), button); button = gtk_button_new_with_label ("Montréal"); g_signal_connect (button, "clicked", diff --git a/src/map.c b/src/map.c index 6489cc6..d0ce373 100644 --- a/src/map.c +++ b/src/map.c @@ -17,15 +17,15 @@ * Boston, MA 02110-1301, USA. */ -#include -#include - +#include "map.h" +#include "zoomlevel.h" +#include Map* map_new (ChamplainMapSource source) { Map* map = g_new0(Map, 1); - + switch(source) { case CHAMPLAIN_MAP_SOURCE_DEBUG: @@ -35,20 +35,25 @@ map_new (ChamplainMapSource source) osm_init(map); break; } - + + map->levels = g_ptr_array_sized_new (map->zoom_levels); + map->current_level = NULL; return map; } void -map_load(Map* map, gint zoom_level) +map_load_level(Map* map, gint zoom_level) { - guint row_count = map->get_row_count(map, zoom_level); - guint column_count = map->get_column_count(map, zoom_level); + //if(map->current_level) + + guint row_count = map->get_row_count(map, zoom_level); + guint column_count = map->get_column_count(map, zoom_level); - map->current_level = zoom_level_new(zoom_level, row_count, column_count, map->tile_size); + map->current_level = zoom_level_new(zoom_level, row_count, column_count, map->tile_size); + g_ptr_array_add(map->levels, map->current_level); } -void +void map_load_visible_tiles (Map* map, ChamplainRect viewport) { gint x_count = ceil((float)viewport.width / map->tile_size) + 1; @@ -78,10 +83,33 @@ map_load_visible_tiles (Map* map, ChamplainRect viewport) if(!exist) { - Tile* tile = map->get_tile(map, map->current_level->level, i, j); - + Tile* tile = tile_load(map, map->current_level->level, i, j); g_ptr_array_add (map->current_level->tiles, tile); } } } } + +gboolean +map_zoom_in (Map* map) +{ + if(map->current_level->level + 1 <= map->zoom_levels) + { + map_load_level(map, map->current_level->level + 1); + return TRUE; + } + return FALSE; +} + +gboolean +map_zoom_out (Map* map) +{ + if(map->current_level->level - 1 >= 0) + { + map_load_level(map, map->current_level->level - 1); + return TRUE; + } + return FALSE; +} + + diff --git a/src/map.h b/src/map.h index c9fbd96..5c74ff3 100644 --- a/src/map.h +++ b/src/map.h @@ -34,18 +34,20 @@ struct _Map { int zoom_levels; const gchar* name; - ZoomLevel* current_level; int tile_size; + ZoomLevel* current_level; + GPtrArray *levels; - Tile* (* get_tile) (Map* map, guint zoom_level, guint x, guint y); guint (* get_row_count) (Map* map, guint zoom_level); guint (* get_column_count) (Map* map, guint zoom_level); - gdouble (* longitude_to_x) (Map* map, gdouble longitude, guint zoom_level); - gdouble (* latitude_to_y) (Map* map, gdouble latitude, guint zoom_level); - gdouble (* x_to_longitude) (Map* map, gdouble x, guint zoom_level); - gdouble (* y_to_latitude) (Map* map, gdouble y, guint zoom_level); + gint (* longitude_to_x) (Map* map, gdouble longitude, guint zoom_level); + gint (* latitude_to_y) (Map* map, gdouble latitude, guint zoom_level); + gdouble (* x_to_longitude) (Map* map, gint x, guint zoom_level); + gdouble (* y_to_latitude) (Map* map, gint y, guint zoom_level); + gchar* (* get_tile_filename) (Tile* tile); + gchar* (* get_tile_uri) (Tile* tile); }; @@ -53,4 +55,6 @@ CHAMPLAIN_API Map* champlain_map_new (ChamplainMapSource source); void map_load_visible_tiles (Map* map, ChamplainRect viewport); +gboolean map_zoom_in (Map* map); + #endif diff --git a/src/sources/debugmap.c b/src/sources/debugmap.c index 33f2453..bedc265 100644 --- a/src/sources/debugmap.c +++ b/src/sources/debugmap.c @@ -24,10 +24,10 @@ guint debugmap_row_count(Map* map, guint zoom_level); guint debugmap_column_count(Map* map, guint zoom_level); Tile* debugmap_get_tile (Map* map, guint zoom_level, guint x, guint y); -gdouble debugmap_longitude_to_x (Map* map, gdouble longitude, guint zoom_level); -gdouble debugmap_latitude_to_y (Map* map, gdouble latitude, guint zoom_level); -gdouble debugmap_x_to_longitude (Map* map, gdouble x, guint zoom_level); -gdouble debugmap_y_to_latitude (Map* map, gdouble y, guint zoom_level); +gint debugmap_longitude_to_x (Map* map, gdouble longitude, guint zoom_level); +gint debugmap_latitude_to_y (Map* map, gdouble latitude, guint zoom_level); +gdouble debugmap_x_to_longitude (Map* map, gint x, guint zoom_level); +gdouble debugmap_y_to_latitude (Map* map, gint y, guint zoom_level); void debugmap_init(Map* map) @@ -38,7 +38,6 @@ debugmap_init(Map* map) map->get_row_count = debugmap_row_count; map->get_column_count = debugmap_column_count; - map->get_tile = debugmap_get_tile; map->longitude_to_x = debugmap_longitude_to_x; map->latitude_to_y = debugmap_latitude_to_y; @@ -105,23 +104,23 @@ Tile* debugmap_get_tile (Map* map, guint zoom_level, guint x, guint y) } //FIXME: These functions need to be fixed -gdouble debugmap_longitude_to_x (Map* map, gdouble longitude, guint zoom_level) +gint debugmap_longitude_to_x (Map* map, gdouble longitude, guint zoom_level) { return ((longitude + 180.0) / 360.0 * pow(2.0, zoom_level)) * map->tile_size; } -gdouble debugmap_latitude_to_y (Map* map, gdouble latitude, guint zoom_level) +gint debugmap_latitude_to_y (Map* map, gdouble latitude, guint zoom_level) { return ((latitude + 90.0) / 180.0 * pow(2.0, zoom_level)) * map->tile_size; } -gdouble debugmap_x_to_longitude (Map* map, gdouble x, guint zoom_level) +gdouble debugmap_x_to_longitude (Map* map, gint x, guint zoom_level) { x /= map->tile_size; return x / map->tile_size * pow(2.0, zoom_level) * 360.0 - 180; } -gdouble debugmap_y_to_latitude (Map* map, gdouble y, guint zoom_level) +gdouble debugmap_y_to_latitude (Map* map, gint y, guint zoom_level) { y /= map->tile_size; return y / map->tile_size * pow(2.0, zoom_level) * 180.0 - 90; diff --git a/src/sources/openstreetmap.c b/src/sources/openstreetmap.c index 159149b..6d0b8dc 100644 --- a/src/sources/openstreetmap.c +++ b/src/sources/openstreetmap.c @@ -18,16 +18,9 @@ */ #include "sources/openstreetmap.h" -#include +#include "map.h" #include #include -#include - - -typedef struct { - Map* map; - Tile* tile; -} TwoPtr ; //http://wiki.openstreetmap.org/index.php/Slippy_map_tilenames#C.2FC.2B.2B @@ -36,10 +29,13 @@ guint osm_row_count(Map* map, guint zoom_level); guint osm_column_count(Map* map, guint zoom_level); Tile* osm_get_tile (Map* map, guint zoom_level, guint x, guint y); -gdouble osm_longitude_to_x (Map* map, gdouble longitude, guint zoom_level); -gdouble osm_latitude_to_y (Map* map, gdouble latitude, guint zoom_level); -gdouble osm_x_to_longitude (Map* map, gdouble x, guint zoom_level); -gdouble osm_y_to_latitude (Map* map, gdouble y, guint zoom_level); +gint osm_longitude_to_x (Map* map, gdouble longitude, guint zoom_level); +gint osm_latitude_to_y (Map* map, gdouble latitude, guint zoom_level); +gdouble osm_x_to_longitude (Map* map, gint x, guint zoom_level); +gdouble osm_y_to_latitude (Map* map, gint y, guint zoom_level); + +gchar* osm_get_tile_filename(Tile* tile); +gchar* osm_get_tile_uri(Tile* tile); void osm_init(Map* map) @@ -50,12 +46,14 @@ osm_init(Map* map) map->get_row_count = osm_row_count; map->get_column_count = osm_column_count; - map->get_tile = osm_get_tile; map->longitude_to_x = osm_longitude_to_x; map->latitude_to_y = osm_latitude_to_y; map->x_to_longitude = osm_x_to_longitude; map->y_to_latitude = osm_y_to_latitude; + + map->get_tile_filename = osm_get_tile_filename; + map->get_tile_uri = osm_get_tile_uri; } guint osm_row_count(Map* map, guint zoom_level) @@ -68,121 +66,40 @@ osm_column_count(Map* map, guint zoom_level) { return pow (2, zoom_level); } -#define MAX_READ 100000 -static void -file_loaded_cb (SoupSession *session, - SoupMessage *msg, - TwoPtr* ptr) +gint +osm_longitude_to_x (Map* map, gdouble longitude, guint zoom_level) { - GError *error = NULL; - GdkPixbufLoader* pixloader; - Tile* tile = ptr->tile; - Map* map = ptr->map; - - if (!SOUP_STATUS_IS_SUCCESSFUL (msg->status_code)) - { - g_warning ("Unable to download tile %d, %d", tile->x, tile->y); - return; - } - - pixloader = gdk_pixbuf_loader_new(); - if (!gdk_pixbuf_loader_write (pixloader, - (const guchar *) msg->response_body->data, - msg->response_body->length, - NULL)) - { - if (error) - { - g_warning ("Unable to load the pixbuf: %s", error->message); - g_error_free (error); - } - - g_object_unref (pixloader); - } - - gdk_pixbuf_loader_close (pixloader, NULL); - if (error) - { - g_warning ("Unable to close the pixbuf loader: %s", error->message); - g_error_free (error); - g_object_unref (pixloader); - } - else - { - GdkPixbuf* pixbuf = gdk_pixbuf_loader_get_pixbuf(pixloader); - - tile->actor = clutter_texture_new(); - clutter_texture_set_from_rgb_data(tile->actor, - gdk_pixbuf_get_pixels (pixbuf), - gdk_pixbuf_get_has_alpha (pixbuf), - gdk_pixbuf_get_width(pixbuf), - gdk_pixbuf_get_height(pixbuf), - gdk_pixbuf_get_rowstride (pixbuf), - 3, 0, NULL); - - - clutter_actor_set_position (tile->actor, tile->x * map->tile_size, tile->y * map->tile_size); - clutter_actor_set_size (tile->actor, map->tile_size, map->tile_size); - clutter_actor_show (tile->actor); - //g_object_ref(tile->actor); // to prevent actors to be destroyed when they are removed from groups - - clutter_container_add (CLUTTER_CONTAINER (map->current_level->group), tile->actor, NULL); - } + return ((longitude + 180.0) / 360.0 * pow(2.0, zoom_level)) * map->tile_size; } -Tile* -osm_get_tile (Map* map, guint zoom_level, guint x, guint y) +gint +osm_latitude_to_y (Map* map, gdouble latitude, guint zoom_level) { - static SoupSession * session; - - Tile* tile = g_new0(Tile, 1); - - tile->x = x; - tile->y = y; - - TwoPtr* ptr = g_new0(TwoPtr, 1); - ptr->map = map; - ptr->tile = tile; - - SoupMessage *msg; - if (!session) - session = soup_session_async_new (); - - msg = soup_message_new (SOUP_METHOD_GET, g_strdup_printf("http://tile.openstreetmap.org/%d/%d/%d.png", zoom_level, x, y)); - - soup_session_queue_message (session, msg, - file_loaded_cb, - ptr); - - return tile; - + return ((1.0 - log( tan(latitude * M_PI/180.0) + 1.0 / cos(latitude * M_PI/180.0)) / M_PI) / 2.0 * pow(2.0, zoom_level)) * map->tile_size; } gdouble -osm_longitude_to_x (Map* map, gdouble longitude, guint zoom_level) +osm_x_to_longitude (Map* map, gint x, guint zoom_level) { - return ((longitude + 180.0) / 360.0 * pow(2.0, zoom_level)) * map->tile_size; + gdouble dx = (float)x / map->tile_size; + return dx / pow(2.0, zoom_level) * 360.0 - 180; } gdouble -osm_latitude_to_y (Map* map, gdouble latitude, guint zoom_level) +osm_y_to_latitude (Map* map, gint y, guint zoom_level) { - return ((1.0 - log( tan(latitude * M_PI/180.0) + 1.0 / cos(latitude * M_PI/180.0)) / M_PI) / 2.0 * pow(2.0, zoom_level)) * map->tile_size; + gdouble dy = (float)y / map->tile_size; + double n = M_PI - 2.0 * M_PI * dy / pow(2.0, zoom_level); + return 180.0 / M_PI * atan(0.5 * (exp(n) - exp(-n))); } -gdouble -osm_x_to_longitude (Map* map, gdouble x, guint zoom_level) +gchar* osm_get_tile_filename(Tile* tile) { - x /= map->tile_size; - return x / map->tile_size * pow(2.0, zoom_level) * 360.0 - 180; + return g_build_filename (g_strdup_printf("%d_%d_%d.png", tile->level, tile->y, tile->x), NULL); } -gdouble -osm_y_to_latitude (Map* map, gdouble y, guint zoom_level) +gchar* osm_get_tile_uri(Tile* tile) { - y /= map->tile_size; - double n = M_PI - 2.0 * M_PI * y / pow(2.0, zoom_level); - return 180.0 / M_PI * atan(0.5 * (exp(n) - exp(-n))); + return g_strdup_printf("http://tile.openstreetmap.org/%d/%d/%d.png", tile->level, tile->x, tile->y, NULL); } - diff --git a/src/tile.c b/src/tile.c index b3b28fc..34b7e7c 100644 --- a/src/tile.c +++ b/src/tile.c @@ -19,29 +19,165 @@ #include "tile.h" +#include "map.h" +#include +#include +#include +#include +#include -/* -gboolean -tile_is_visible(ClutterUnit viewport_w, ClutterUnit viewport_h, ChamplainPoint position, MapTile* tile) +typedef struct { + Map* map; + Tile* tile; +} TwoPtr; + +#define CACHE_DIR "champlain" + +void +tile_set(Tile* tile) +{ + clutter_actor_set_position (tile->actor, tile->x * tile->size, tile->y * tile->size); + clutter_actor_set_size (tile->actor, tile->size, tile->size); + clutter_actor_show (tile->actor); +} + +static void +file_loaded_cb (SoupSession *session, + SoupMessage *msg, + TwoPtr* ptr) { - ClutterUnit size = CLUTTER_UNITS_FROM_INT(tile->size); + GdkPixbufLoader* loader; + GError *error = NULL; + gchar* path, *filename, *map_filename; + + Tile* tile = ptr->tile; + Map* map = ptr->map; + + if (!SOUP_STATUS_IS_SUCCESSFUL (msg->status_code)) + { + g_warning ("Unable to download tile %d, %d", tile->x, tile->y); + return; + } - if( ((tile->x + 1)* size + position.x < 0 || tile->x* size + position.x > viewport_w) || - ((tile->y + 1)* size + position.y < 0 || tile->y* size + position.y > viewport_h)) + loader = gdk_pixbuf_loader_new(); + if (!gdk_pixbuf_loader_write (loader, + (const guchar *) msg->response_body->data, + msg->response_body->length, + &error)) + { + if (error) + { + g_warning ("Unable to load the pixbuf: %s", error->message); + g_error_free (error); + } + + g_object_unref (loader); + } + + gdk_pixbuf_loader_close (loader, &error); + if (error) + { + g_warning ("Unable to close the pixbuf loader: %s", error->message); + g_error_free (error); + g_object_unref (loader); + } + else { - g_print ("Tile I: %d, %d\t p: %d, %d \n", - tile->x, tile->y, - CLUTTER_UNITS_TO_INT (position.x), - CLUTTER_UNITS_TO_INT (position.y)); - return FALSE; + path = g_build_filename (g_get_user_cache_dir (), + CACHE_DIR, + map->name, + NULL); + + if (g_mkdir_with_parents (path, 0700) == -1) + { + if (errno != EEXIST) + { + g_warning ("Unable to create the image cache: %s", + g_strerror (errno)); + g_object_unref (loader); + } + } + + map_filename = map->get_tile_filename(tile); + filename = g_build_filename (g_get_user_cache_dir (), + CACHE_DIR, + map->name, + map_filename, + NULL); + + g_file_set_contents (filename, + msg->response_body->data, + msg->response_body->length, + NULL); + GdkPixbuf* pixbuf = gdk_pixbuf_loader_get_pixbuf(loader); + + tile->actor = clutter_texture_new(); + clutter_texture_set_from_rgb_data(CLUTTER_TEXTURE(tile->actor), + gdk_pixbuf_get_pixels (pixbuf), + gdk_pixbuf_get_has_alpha (pixbuf), + gdk_pixbuf_get_width(pixbuf), + gdk_pixbuf_get_height(pixbuf), + gdk_pixbuf_get_rowstride (pixbuf), + 3, 0, NULL); + + tile_set(tile); + + clutter_container_add (CLUTTER_CONTAINER (map->current_level->group), tile->actor, NULL); + + g_object_unref (loader); + g_free (filename); + g_free (map_filename); } - //g_print ("Tile V: %d, %d\t p: %d, %d \n", - //tile->x, tile->y, - //CLUTTER_UNITS_TO_INT (position.x), - //CLUTTER_UNITS_TO_INT (position.y)); - return TRUE; +} -}*/ +Tile* +tile_load (Map* map, guint zoom_level, guint x, guint y) +{ + static SoupSession * session; + gchar* filename, *map_filename; + Tile* tile = g_new0(Tile, 1); + + tile->x = x; + tile->y = y; + tile->level = zoom_level; + tile->size = map->tile_size; + + TwoPtr* ptr = g_new0(TwoPtr, 1); + ptr->map = map; + ptr->tile = tile; + + // Try the cached version first + map_filename = map->get_tile_filename(tile); + filename = g_build_filename (g_get_user_cache_dir (), + CACHE_DIR, + map->name, + map_filename, + NULL); + + if (g_file_test (filename, G_FILE_TEST_EXISTS)) + { + tile->actor = clutter_texture_new_from_file(filename, NULL); + //g_object_ref(tile->actor); // to prevent actors to be destroyed when they are removed from groups + tile_set(tile); + + clutter_container_add (CLUTTER_CONTAINER (map->current_level->group), tile->actor, NULL); + } + else + { + SoupMessage *msg; + if (!session) + session = soup_session_async_new (); + msg = soup_message_new (SOUP_METHOD_GET, g_strdup_printf("http://tile.openstreetmap.org/%d/%d/%d.png", zoom_level, x, y)); + soup_session_queue_message (session, msg, + file_loaded_cb, + ptr); + } + + g_free (filename); + g_free (map_filename); + return tile; + +} diff --git a/src/tile.h b/src/tile.h index 76bcd0d..d880696 100644 --- a/src/tile.h +++ b/src/tile.h @@ -29,6 +29,7 @@ typedef struct int x; int y; int size; + int level; } Tile;