diff options
Diffstat (limited to 'source/blender/blenkernel/intern/tracking.c')
| -rw-r--r-- | source/blender/blenkernel/intern/tracking.c | 176 |
1 files changed, 173 insertions, 3 deletions
diff --git a/source/blender/blenkernel/intern/tracking.c b/source/blender/blenkernel/intern/tracking.c index 7b075610ba9..734832ba133 100644 --- a/source/blender/blenkernel/intern/tracking.c +++ b/source/blender/blenkernel/intern/tracking.c @@ -587,15 +587,15 @@ MovieTrackingTrack *BKE_tracking_track_add(MovieTracking *tracking, { const MovieTrackingSettings *settings = &tracking->settings; + MovieTrackingTrack *track = BKE_tracking_track_add_empty(tracking, tracksbase); + MovieTrackingMarker marker; + const float half_pattern_px = settings->default_pattern_size / 2.0f; const float half_search_px = settings->default_search_size / 2.0f; const float pattern_size[2] = {half_pattern_px / width, half_pattern_px / height}; const float search_size[2] = {half_search_px / width, half_search_px / height}; - MovieTrackingTrack *track = BKE_tracking_track_add_empty(tracking, tracksbase); - - MovieTrackingMarker marker; memset(&marker, 0, sizeof(marker)); marker.pos[0] = x; marker.pos[1] = y; @@ -665,6 +665,86 @@ void BKE_tracking_track_free(MovieTrackingTrack *track) } } +/* Get frame numbers of the very first and last markers. + * There is no check on whether the marker is enabled or not. */ +void BKE_tracking_track_first_last_frame_get(const MovieTrackingTrack *track, + int *r_first_frame, + int *r_last_frame) +{ + BLI_assert(track->markersnr > 0); + const int last_marker_index = track->markersnr - 1; + *r_first_frame = track->markers[0].framenr; + *r_last_frame = track->markers[last_marker_index].framenr; +} + +/* Find the minimum starting frame and maximum ending frame within given set of + * tracks. + */ +void BKE_tracking_tracks_first_last_frame_minmax(/*const*/ MovieTrackingTrack **tracks, + const int num_tracks, + int *r_first_frame, + int *r_last_frame) +{ + *r_first_frame = INT_MAX; + *r_last_frame = INT_MIN; + for (int i = 0; i < num_tracks; ++i) { + const struct MovieTrackingTrack *track = tracks[i]; + int track_first_frame, track_last_frame; + BKE_tracking_track_first_last_frame_get(track, &track_first_frame, &track_last_frame); + *r_first_frame = min_ii(*r_first_frame, track_first_frame); + *r_last_frame = max_ii(*r_last_frame, track_last_frame); + } +} + +int BKE_tracking_count_selected_tracks_in_list(const ListBase *tracks_list) +{ + int num_selected_tracks = 0; + LISTBASE_FOREACH (const MovieTrackingTrack *, track, tracks_list) { + if (TRACK_SELECTED(track)) { + ++num_selected_tracks; + } + } + return num_selected_tracks; +} + +int BKE_tracking_count_selected_tracks_in_active_object(/*const*/ MovieTracking *tracking) +{ + ListBase *tracks_list = BKE_tracking_get_active_tracks(tracking); + return BKE_tracking_count_selected_tracks_in_list(tracks_list); +} + +MovieTrackingTrack **BKE_tracking_selected_tracks_in_active_object(MovieTracking *tracking, + int *r_num_tracks) +{ + *r_num_tracks = 0; + + ListBase *tracks_list = BKE_tracking_get_active_tracks(tracking); + if (tracks_list == NULL) { + return NULL; + } + + /* Initialize input. */ + const int num_selected_tracks = BKE_tracking_count_selected_tracks_in_active_object(tracking); + if (num_selected_tracks == 0) { + return NULL; + } + + MovieTrackingTrack **source_tracks = MEM_malloc_arrayN( + num_selected_tracks, sizeof(MovieTrackingTrack *), "selected tracks array"); + int source_track_index = 0; + LISTBASE_FOREACH (MovieTrackingTrack *, track, tracks_list) { + if (!TRACK_SELECTED(track)) { + continue; + } + source_tracks[source_track_index] = track; + ++source_track_index; + } + + *r_num_tracks = num_selected_tracks; + + return source_tracks; +} + /* Set flag for all specified track's areas. * * area - which part of marker should be selected. see TRACK_AREA_* constants. @@ -918,6 +998,96 @@ void BKE_tracking_tracks_join(MovieTracking *tracking, BKE_tracking_dopesheet_tag_update(tracking); } +static void accumulate_marker(MovieTrackingMarker *dst_marker, + const MovieTrackingMarker *src_marker) +{ + BLI_assert(dst_marker->framenr == src_marker->framenr); + + if (src_marker->flag & MARKER_DISABLED) { + return; + } + + add_v2_v2(dst_marker->pos, src_marker->pos); + for (int corner = 0; corner < 4; ++corner) { + add_v2_v2(dst_marker->pattern_corners[corner], src_marker->pattern_corners[corner]); + } + add_v2_v2(dst_marker->search_min, src_marker->search_min); + add_v2_v2(dst_marker->search_max, src_marker->search_max); + + BLI_assert(is_finite_v2(src_marker->search_min)); + BLI_assert(is_finite_v2(src_marker->search_max)); + + dst_marker->flag &= ~MARKER_DISABLED; + if ((src_marker->flag & MARKER_TRACKED) == 0) { + dst_marker->flag &= ~MARKER_TRACKED; + } +} + +static void multiply_marker(MovieTrackingMarker *marker, const float multiplier) +{ + mul_v2_fl(marker->pos, multiplier); + for (int corner = 0; corner < 4; ++corner) { + mul_v2_fl(marker->pattern_corners[corner], multiplier); + } + mul_v2_fl(marker->search_min, multiplier); + mul_v2_fl(marker->search_max, multiplier); +} + +void BKE_tracking_tracks_average(MovieTrackingTrack *dst_track, + /*const*/ MovieTrackingTrack **src_tracks, + const int num_src_tracks) +{ + /* Get global range of frames within which averaging would happen. */ + int first_frame, last_frame; + BKE_tracking_tracks_first_last_frame_minmax( + src_tracks, num_src_tracks, &first_frame, &last_frame); + if (last_frame < first_frame) { + return; + } + const int num_frames = last_frame - first_frame + 1; + + /* Allocate temporary array where averaging will happen into. */ + MovieTrackingMarker *accumulator = MEM_calloc_arrayN( + num_frames, sizeof(MovieTrackingMarker), "tracks average accumulator"); + int *counters = MEM_calloc_arrayN(num_frames, sizeof(int), "tracks accumulator counters"); + for (int frame = first_frame; frame <= last_frame; ++frame) { + const int frame_index = frame - first_frame; + accumulator[frame_index].framenr = frame; + accumulator[frame_index].flag |= (MARKER_DISABLED | MARKER_TRACKED); + } + + /* Accumulate track markers. */ + for (int track_index = 0; track_index < num_src_tracks; ++track_index) { + /*const*/ MovieTrackingTrack *track = src_tracks[track_index]; + for (int frame = first_frame; frame <= last_frame; ++frame) { + MovieTrackingMarker interpolated_marker; + if (!BKE_tracking_marker_get_interpolated(track, frame, &interpolated_marker)) { + continue; + } + const int frame_index = frame - first_frame; + accumulate_marker(&accumulator[frame_index], &interpolated_marker); + ++counters[frame_index]; + } + } + + /* Average and store the result. */ + for (int frame = first_frame; frame <= last_frame; ++frame) { + /* Average. */ + const int frame_index = frame - first_frame; + if (!counters[frame_index]) { + continue; + } + const float multiplier = 1.0f / (float)counters[frame_index]; + multiply_marker(&accumulator[frame_index], multiplier); + /* Store the result. */ + BKE_tracking_marker_insert(dst_track, &accumulator[frame_index]); + } + + /* Free memory. */ + MEM_freeN(accumulator); + MEM_freeN(counters); +} + MovieTrackingTrack *BKE_tracking_track_get_named(MovieTracking *tracking, MovieTrackingObject *object, const char *name) |