Refactor:traffic:Definitions for dynamic route changes based on traffic

Signed-off-by: mvglasow <michael -at- vonglasow.com>

1 files changed, 29 insertions, 0 deletions

diff --git a/navit/route_protected.h b/navit/route_protected.h
index 0aeb107e6..3f8ff6c90 100644
--- a/navit/route_protected.h
+++ b/navit/route_protected.h
@@ -34,6 +34,22 @@
 extern "C" {
 #endif
 
+/** Indicates that the cost of a node has increased. */
+#define TDC_INCREASED 1
+
+/** Indicates that the cost of a node has decreased. */
+#define TDC_DECREASED 2
+
+/** Indicates that the cost of a segment has increased. */
+#define TDC_SEG_INCREASED 4
+
+/** Indicates that the cost of a segment has decreased. */
+#define TDC_SEG_DECREASED 8
+
+/** Mask of flags which indicate that the cost of a segment has changed. */
+#define TDC_SEG_MASK TDC_SEG_INCREASED | TDC_SEG_DECREASED
+
+
 #define RSD_MAXSPEED(x) *((int *)route_segment_data_field_pos((x), attr_maxspeed))
 
 /**
@@ -144,6 +160,19 @@ struct route_graph {
 	struct route_graph_point *hash[HASH_SIZE];  /**< A hashtable containing all route_graph_points in this graph */
 };
 
+/**
+ * @brief Describes a traffic distortion that has been added, cleared or changed
+ */
+struct route_traffic_distortion_change {
+	struct route_graph_point *to;               /**< A point whose cost has changed */
+	struct route_graph_point *from;             /**< If non-NULL, indicates that the changes affect the
+	                                                 segment linking `from` and `to` (the cost of `to`
+	                                                 may or may not have changed). If NULL, the cost of
+	                                                 `to` itself has changed and all segments leading
+	                                                 towards `to` must be evaluated. */
+	int flags;                                  /**< Flags to indicate how the cost has changed. */
+};
+
 
 /* prototypes */
 struct route_graph_point * route_graph_add_point(struct route_graph *this, struct coord *f);