2.5 - Keyframe Types for DopeSheet

It is now possible to tag certain keyframes as being 'breakdowns' in the DopeSheet. Breakdown keyframes are drawn as slightly smaller blue diamonds.

Simply select the relevant keyframes and use the RKEY hotkey (or from the menus, Key->Keyframe Type) to choose between tagging the keyframe as a 'proper' keyframe and a 'breakdown' keyframe. 

Notes:
* Please note that this feature does not currently imply anything about breakdowns moving around keyframes or behaving any differently from any other type of keyframe
* In future, if there is any such need, more keyframe types could be added, though this is not really likely at all

1 files changed, 13 insertions, 4 deletions

diff --git a/source/blender/makesdna/DNA_curve_types.h b/source/blender/makesdna/DNA_curve_types.h
index b0f089d670f..3bac2c73bcb 100644
--- a/source/blender/makesdna/DNA_curve_types.h
+++ b/source/blender/makesdna/DNA_curve_types.h
@@ -75,25 +75,28 @@ typedef struct BevPoint {
 	short f1, f2;
 } BevPoint;
 
-/* Keyframes on IPO curves and Points on Bezier Curves/Paths are generally BezTriples */
+/* Keyframes on F-Curves (allows code reuse of Bezier eval code) and 
+ * Points on Bezier Curves/Paths are generally BezTriples 
+ */
 /* note: alfa location in struct is abused by Key system */
 /* vec in BezTriple looks like this:
 	vec[0][0]=x location of handle 1
 	vec[0][1]=y location of handle 1
-	vec[0][2]=z location of handle 1 (not used for IpoCurve Points(2d))
+	vec[0][2]=z location of handle 1 (not used for FCurve Points(2d))
 	vec[1][0]=x location of control point
 	vec[1][1]=y location of control point
 	vec[1][2]=z location of control point
 	vec[2][0]=x location of handle 2
 	vec[2][1]=y location of handle 2
-	vec[2][2]=z location of handle 2 (not used for IpoCurve Points(2d))
+	vec[2][2]=z location of handle 2 (not used for FCurve Points(2d))
 */
 typedef struct BezTriple {
 	float vec[3][3];
 	float alfa, weight, radius;	/* alfa: tilt in 3D View, weight: used for softbody goal weight, radius: for bevel tapering */
 	short ipo;					/* ipo: interpolation mode for segment from this BezTriple to the next */
 	char h1, h2; 				/* h1, h2: the handle type of the two handles */
-	char f1, f2, f3, hide;		/* f1, f2, f3: used for selection status,  hide: used to indicate whether BezTriple is hidden */
+	char f1, f2, f3;			/* f1, f2, f3: used for selection status */
+	char hide;					/* hide: used to indicate whether BezTriple is hidden (3D), type of keyframe (eBezTriple_KeyframeTypes) */
 } BezTriple;
 
 /* note; alfa location in struct is abused by Key system */
@@ -279,6 +282,12 @@ typedef enum eBezTriple_Interpolation {
 	BEZT_IPO_BEZ,		/* bezier interpolation */
 } eBezTriple_Interpolation;
 
+/* types of keyframe (used only for BezTriple->hide when BezTriple is used in F-Curves) */
+typedef enum eBezTriple_KeyframeType {
+	BEZT_KEYTYPE_KEYFRAME = 0,	/* default - 'proper' Keyframe */
+	BEZT_KEYTYPE_BREAKDOWN,		/* 'breakdown' keyframe */
+} eBezTriple_KeyframeType;
+
 /* *************** CHARINFO **************** */
 
 /* flag */