Cycles: Improved robustness of hair motion blur.motion_curve_fix

In some instances, the number of control vertices of a hair could change mid-frame.
Cycles would then be unable to calculate proper motion blur for those hairs. This adds
interpolated CVs to fill in for the missing data. While this will not necessarily result in
a fully accurate reconstruction of the guide hair, it preserves motion blur instead of disabling it.

Reviewers: #cycles, sergey

Reviewed By: #cycles, sergey

Subscribers: sergey, brecht, #cycles

Tags: #cycles

Differential Revision: https://developer.blender.org/D3695

1 files changed, 2 insertions, 2 deletions

diff --git a/source/blender/editors/include/ED_keyframes_edit.h b/source/blender/editors/include/ED_keyframes_edit.h
index 5787a63d324..e7ea5cf159e 100644
--- a/source/blender/editors/include/ED_keyframes_edit.h
+++ b/source/blender/editors/include/ED_keyframes_edit.h
@@ -216,11 +216,11 @@ typedef enum eKeyMergeMode {
 /* function for working with F-Curve data only (i.e. when filters have been chosen to explicitly use this) */
 short ANIM_fcurve_keyframes_loop(KeyframeEditData *ked, struct FCurve *fcu, KeyframeEditFunc key_ok, KeyframeEditFunc key_cb, FcuEditFunc fcu_cb);
 /* function for working with any type (i.e. one of the known types) of animation channel
- *  - filterflag is bDopeSheet->flag (DOPESHEET_FILTERFLAG)
+ * - filterflag is bDopeSheet->flag (DOPESHEET_FILTERFLAG)
  */
 short ANIM_animchannel_keyframes_loop(KeyframeEditData *ked, struct bDopeSheet *ads, struct bAnimListElem *ale, KeyframeEditFunc key_ok, KeyframeEditFunc key_cb, FcuEditFunc fcu_cb);
 /* same as above, except bAnimListElem wrapper is not needed...
- *  - keytype is eAnim_KeyType
+ * - keytype is eAnim_KeyType
  */
 short ANIM_animchanneldata_keyframes_loop(KeyframeEditData *ked, struct bDopeSheet *ads, void *data, int keytype, KeyframeEditFunc key_ok, KeyframeEditFunc key_cb, FcuEditFunc fcu_cb);