Add GisTile and GisWms and update wms_test accordingly

[grits] / src / gis-tile.c

diff --git a/src/gis-tile.c b/src/gis-tile.c
new file mode 100644 (file)
index 0000000..ab45616
--- /dev/null
+++ b/src/gis-tile.c
@@ -0,0 +1,68 @@
+/*
+ * Copyright (C) 2009 Andy Spencer <spenceal@rose-hulman.edu>
+ *
+ * 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 3 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <config.h>
+#include <glib.h>
+
+#include "gis-world.h"
+#include "gis-tile.h"
+
+gchar *gis_tile_path_table[2][2] = {
+       {".00", ".01"},
+       {".10", ".11"},
+};
+
+GisTile *gis_tile_new(GisTile *parent,
+       gdouble n, gdouble s, gdouble e, gdouble w)
+{
+       GisTile *self = g_new0(GisTile, 1);
+       self->parent = parent;
+       self->edge.n = n;
+       self->edge.s = s;
+       self->edge.e = e;
+       self->edge.w = w;
+       return self;
+}
+
+gchar *gis_tile_get_path(GisTile *child)
+{
+       /* This could be easily cached if necessasairy */
+       int x, y;
+       GList *parts = NULL;
+       for (GisTile *parent = child->parent; parent; child = parent, parent = child->parent)
+               gis_tile_foreach_index(child, x, y)
+                       if (parent->children[x][y] == child)
+                               parts = g_list_prepend(parts, gis_tile_path_table[x][y]);
+       GString *path = g_string_new("");
+       for (; parts; parts = parts->next)
+               g_string_append(path, parts->data);
+       g_list_free(parts);
+       return g_string_free(path, FALSE);
+}
+
+
+void gis_tile_free(GisTile *self, GisTileFreeFunc free_func, gpointer user_data)
+{
+       if (!self)
+               return;
+       GisTile *child;
+       gis_tile_foreach(self, child)
+               gis_tile_free(child, free_func, user_data);
+       if (free_func)
+               free_func(self, user_data);
+       g_free(self);
+}