Motion tracking dopesheet

Highlight background depending on number of tracks existing on frame.

This is not so much mathematically accurate displaying where things
shall be improved, but it's nice feedback about which frames better
be reviewed.

Bad frames are tracks < 8, highlighted with red.
OK-ish frame  are 8 <= tracks < 16, highlighted with yellow.

Could be some artifacts with color region start/end, this is a bit
unclear what exactly expected to be highlighted -- frames are
displayed as dots, but in fact they're quite noticeable segments.

---
svn merge -r54572:54573 ^/branches/soc-2011-tomato

1 files changed, 27 insertions, 0 deletions

diff --git a/source/blender/editors/space_clip/clip_dopesheet_draw.c b/source/blender/editors/space_clip/clip_dopesheet_draw.c
index 09d97c36436..b1be9217819 100644
--- a/source/blender/editors/space_clip/clip_dopesheet_draw.c
+++ b/source/blender/editors/space_clip/clip_dopesheet_draw.c
@@ -145,6 +145,31 @@ static void draw_keyframe_shape(float x, float y, float xscale, float yscale, sh
 	glPopMatrix();
 }
 
+static void clip_draw_dopesheet_background(ARegion *ar, MovieClip *clip)
+{
+	View2D *v2d = &ar->v2d;
+	MovieTracking *tracking = &clip->tracking;
+	MovieTrackingDopesheet *dopesheet = &tracking->dopesheet;
+	MovieTrackingDopesheetCoverageSegment *coverage_segment;
+
+	for (coverage_segment = dopesheet->coverage_segments.first;
+	     coverage_segment;
+	     coverage_segment = coverage_segment->next)
+	{
+		if (coverage_segment->coverage < TRACKING_COVERAGE_OK) {
+			int start_frame = BKE_movieclip_remap_clip_to_scene_frame(clip, coverage_segment->start_frame);
+			int end_frame = BKE_movieclip_remap_clip_to_scene_frame(clip, coverage_segment->end_frame);
+
+			if (coverage_segment->coverage == TRACKING_COVERAGE_BAD)
+				glColor4f(1.0f, 0.0f, 0.0f, 0.07f);
+			else
+				glColor4f(1.0f, 1.0f, 0.0f, 0.07f);
+
+			glRectf(start_frame, v2d->cur.ymin, end_frame, v2d->cur.ymax);
+		}
+	}
+}
+
 void clip_draw_dopesheet_main(SpaceClip *sc, ARegion *ar, Scene *scene)
 {
 	MovieClip *clip = ED_space_clip_get_clip(sc);
@@ -179,6 +204,8 @@ void clip_draw_dopesheet_main(SpaceClip *sc, ARegion *ar, Scene *scene)
 
 		glEnable(GL_BLEND);
 
+		clip_draw_dopesheet_background(ar, clip);
+
 		for (channel = dopesheet->channels.first; channel; channel = channel->next) {
 			float yminc = (float) (y - CHANNEL_HEIGHT_HALF);
 			float ymaxc = (float) (y + CHANNEL_HEIGHT_HALF);