X-Git-Url: http://pileus.org/git/?a=blobdiff_plain;f=src%2Fgis-tile.h;h=d21b771477076aaa51406d66d1f7c0f713f52ba1;hb=8f2f3918e1bc04ac40a9ba0a24452c1b1b0183ac;hp=12d397d66cc6d3697f71bf8e8b385d441a5ee663;hpb=2e575e2c348f44d3c723ac344b7296492c76f77a;p=grits

diff --git a/src/gis-tile.h b/src/gis-tile.h
index 12d397d..d21b771 100644
--- a/src/gis-tile.h
+++ b/src/gis-tile.h
@@ -18,7 +18,6 @@
 #ifndef __GIS_TILE_H__
 #define __GIS_TILE_H__
 
-#include <config.h>
 #include <glib.h>
 
 typedef struct _GisTile        GisTile;
@@ -47,6 +46,9 @@ struct _GisTile {
 	/* Pointers to parent/child nodes */
 	GisTile *parent;
 	GisTile *children[2][2];
+
+	/* Last access time (for garbage collection) */
+	time_t atime;
 };
 
 /* Path to string table, keep in sync with tile->children */ 
@@ -59,6 +61,20 @@ GisTile *gis_tile_new(GisTile *parent,
 /* Return a string representation of the tile's path */
 gchar *gis_tile_get_path(GisTile *child);
 
+/* Update a root tile */
+/* Based on eye distance (lat,lon,elev) */
+void gis_tile_update(GisTile *root,
+		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 */
+GisTile *gis_tile_find(GisTile *root, gdouble lat, gdouble lon);
+
+/* Delete nodes that haven't been accessed since atime */
+GisTile *gis_tile_gc(GisTile *root, time_t atime,
+		GisTileFreeFunc free_func, gpointer user_data);
+
 /* Free a tile and all it's children */
 void gis_tile_free(GisTile *root,
 		GisTileFreeFunc free_func, gpointer user_data);