2.5 - Pose Enhancement Tools

This commit restores the 'Relax Pose' tool, and also introduces two others: 'Push Pose' and 'Pose Breakdowner'.
Be aware that this commit is just the initial starting point, with some parts yet to be done.

A short description of these tools follows:
* Relax Pose (Alt-E) - makes the current pose more like the poses on either side of it
* Push Pose (Ctrl-E) - exaggerates the current pose
* Breakdowner (Shift-E)[not working yet] - when this works, it will allow for interactive selection of a good in-between pose to act as a breakdown. 

Todo's:
* Connect up the 'percentage' slider in the operator settings to allow these effects to be dialed in/out, exaggerating/relaxing/moveing-between-keyframes by varying degrees until the desired effect is reached.
* Allow these effects to be interactively dialed in/out. The idea is to use the mouse to interactively set the percentage slider value initially, then use the percentage slider to tweak later.
* Figure out why breakdown breaks down 

1 files changed, 23 insertions, 1 deletions

diff --git a/source/blender/editors/animation/keyframes_draw.c b/source/blender/editors/animation/keyframes_draw.c
index abea38e129e..8e7789190c3 100644
--- a/source/blender/editors/animation/keyframes_draw.c
+++ b/source/blender/editors/animation/keyframes_draw.c
@@ -316,7 +316,7 @@ static void set_touched_actkeyblock (ActKeyBlock *ab)
 /* *************************** Keyframe Drawing *************************** */
 
 /* helper function - find actkeycolumn that occurs on cframe */
-static ActKeyColumn *cfra_find_actkeycolumn (ActKeyColumn *ak, float cframe)
+ActKeyColumn *cfra_find_actkeycolumn (ActKeyColumn *ak, float cframe)
 {
 	/* sanity checks */
 	if (ak == NULL)
@@ -331,6 +331,28 @@ static ActKeyColumn *cfra_find_actkeycolumn (ActKeyColumn *ak, float cframe)
 		return ak; /* match */
 }
 
+/* helper function - find actkeycolumn that occurs on cframe, or the nearest one if not found */
+ActKeyColumn *cfra_find_nearest_next_ak (ActKeyColumn *ak, float cframe, short next)
+{
+	ActKeyColumn *akn= NULL;
+	
+	/* sanity checks */
+	if (ak == NULL)
+		return NULL;
+	
+	/* check if this is a match, or whether it is in some subtree */
+	if (cframe < ak->cfra)
+		akn= cfra_find_nearest_next_ak(ak->left, cframe, next);
+	else if (cframe > ak->cfra)
+		akn= cfra_find_nearest_next_ak(ak->right, cframe, next);
+		
+	/* if no match found (or found match), just use the current one */
+	if (akn == NULL)
+		return ak;
+	else
+		return akn;
+}
+
 /* -------- */
 
 /* coordinates for diamond shape */