gpointer data;
/* North,South,East,West limits */
- struct {
- gdouble n,s,e,w;
- } edge;
+ GisBBox edge;
/* Pointers to parent/child nodes */
GisTile *parent;
GisObjectClass parent_class;
};
+/**
+ * GisTileLoadFunc:
+ * @tile: the tile to load
+ * @user_data: data paseed to the function
+ *
+ * Used to load the image data associated with a tile. For GisOpenGL, this
+ * function should store the OpenGL texture number in the tiles data field.
+ */
typedef void (*GisTileLoadFunc)(GisTile *tile, gpointer user_data);
+
+/**
+ * GisTileFreeFunc:
+ * @tile: the tile to free
+ * @user_data: data paseed to the function
+ *
+ * Used to free the image data associated with a tile
+ */
typedef void (*GisTileFreeFunc)(GisTile *tile, gpointer user_data);
/* Forech functions */
+/**
+ * gis_tile_foreach:
+ * @parent: the #GisTile to iterate over
+ * @child: a pointer to a #GisTile to store the current subtile
+ *
+ * Iterate over each imediate subtile of @parent.
+ */
#define gis_tile_foreach(parent, child) \
for (int _x = 0; _x < G_N_ELEMENTS(parent->children); _x++) \
for (int _y = 0; child = parent->children[_x][_y], \
_y < G_N_ELEMENTS(parent->children[_x]); _y++)
+/**
+ * gis_tile_foreach_index:
+ * @parent: the #GisTile to iterate over
+ * @x: integer to store the x index of the current subtile
+ * @y: integer to store the y index of the current subtile
+ *
+ * Iterate over each imediate subtile of @parent.
+ */
#define gis_tile_foreach_index(parent, x, y) \
for (x = 0; x < G_N_ELEMENTS(parent->children); x++) \
for (y = 0; y < G_N_ELEMENTS(parent->children[x]); y++)
gchar *gis_tile_get_path(GisTile *child);
/* Update a root tile */
-/* Based on eye distance (lat,lon,elev) */
-void gis_tile_update(GisTile *root,
+/* Based on eye distance */
+void gis_tile_update(GisTile *root, GisPoint *eye,
gdouble res, gint width, gint height,
- gdouble lat, gdouble lon, gdouble elev,
GisTileLoadFunc load_func, gpointer user_data);
/* Find the leaf tile containing lat-lon */