From 498ba756abeec746322b883d98ba6a192f37e7ea Mon Sep 17 00:00:00 2001 From: Ichthyostega Date: Mon, 22 Aug 2016 17:29:19 +0200 Subject: 2D stabilization: by default init anchor_frame to frame 1 It is common in blender to use 1-based counting for frame sequences (while 0-based is allowed). Thus initializing to use frame 1 as reference for stabilization is likely to produce smooth start values in most cases --- source/blender/blenkernel/intern/tracking.c | 2 +- source/blender/blenloader/intern/versioning_270.c | 3 +++ 2 files changed, 4 insertions(+), 1 deletion(-) diff --git a/source/blender/blenkernel/intern/tracking.c b/source/blender/blenkernel/intern/tracking.c index d5d3384bb48..a86606f1099 100644 --- a/source/blender/blenkernel/intern/tracking.c +++ b/source/blender/blenkernel/intern/tracking.c @@ -330,7 +330,7 @@ void BKE_tracking_settings_init(MovieTracking *tracking) tracking->settings.object_distance = 1; tracking->stabilization.scaleinf = 1.0f; - tracking->stabilization.anchor_frame = MINFRAME; + tracking->stabilization.anchor_frame = 1; zero_v2(tracking->stabilization.target_pos); tracking->stabilization.target_rot = 0.0f; tracking->stabilization.scale = 1.0f; diff --git a/source/blender/blenloader/intern/versioning_270.c b/source/blender/blenloader/intern/versioning_270.c index 1ef32d6f006..49ef8baa184 100644 --- a/source/blender/blenloader/intern/versioning_270.c +++ b/source/blender/blenloader/intern/versioning_270.c @@ -1373,6 +1373,9 @@ void blo_do_versions_270(FileData *fd, Library *UNUSED(lib), Main *main) * now used always (as "target scale") */ clip->tracking.stabilization.scale = 1.0f; } + /* blender prefers 1-based frame counting; + * thus using frame 1 as reference typically works best */ + clip->tracking.stabilization.anchor_frame = 1; /* by default show the track lists expanded, to improve "discoverability" */ clip->tracking.stabilization.flag |= TRACKING_SHOW_STAB_TRACKS; /* deprecated, not used anymore */ -- cgit v1.2.3