Camera tracking: switch dopesheet information to lazy calculation

All operators which changes tracking data now just tags dopsheet as outdated,
actual re-calculaiton of happens only when this information is actually needed
(like on dopesheet draw).

This makes things a bit faster when there's no dopesheet visible in current
screen and also makes it much easier to update dopesheet using dependency
graph.

Also renamed dopesheet_sort_order to dopesheet_sort_method in rna and internal
stuff which makes much more sense and also correlated with naming in
file browser.

1 files changed, 3 insertions, 1 deletions

diff --git a/source/blender/makesdna/DNA_tracking_types.h b/source/blender/makesdna/DNA_tracking_types.h
index 4e2b3c46aa4..6bf059c7ecb 100644
--- a/source/blender/makesdna/DNA_tracking_types.h
+++ b/source/blender/makesdna/DNA_tracking_types.h
@@ -205,10 +205,12 @@ typedef struct MovieTrackingDopesheetChannel {
 } MovieTrackingDopesheetChannel;
 
 typedef struct MovieTrackingDopesheet {
+	int ok, pad;				/* flag if dopesheet information is still relevant */
+
 	ListBase channels;
 	int tot_channel;
 
-	short sort_order;			/* order in which tracks are stored */
+	short sort_method;			/* method to be used to sort tracks */
 	short sort_inverse;			/* order of tracks is inverted */
 } MovieTrackingDopesheet;