Patch T22084: Robert Penner Easing Equations for FCurves

This commit introduces support for a number of new interpolation types
which are useful for motion-graphics work. These define a number of
"easing equations" (basically, equations which define some preset
ways that one keyframe transitions to another) which reduce the amount
of manual work (inserting and tweaking keyframes) to achieve certain
common effects. For example, snappy movements, and fake-physics such
as bouncing/springing effects.

The additional interpolation types introduced in this commit can be found
in many packages and toolkits (notably Qt and all modern web browsers).
For more info and a few live demos, see [1] and [2].


Credits:
* Dan Eicher (dna)              - Original patch
* Thomas Beck (plasmasolutions) - Porting/updating patch to 2.70 codebase
* Joshua Leung (aligorith)      - Code review and a few polishing tweaks

Additional Resources:
[1] http://easings.net
[2] http://www.robertpenner.com/easing/

1 files changed, 1 insertions, 0 deletions

diff --git a/source/blender/editors/space_graph/graph_intern.h b/source/blender/editors/space_graph/graph_intern.h
index 567b0a60bb0..fe1378679d8 100644
--- a/source/blender/editors/space_graph/graph_intern.h
+++ b/source/blender/editors/space_graph/graph_intern.h
@@ -112,6 +112,7 @@ void GRAPH_OT_euler_filter(struct wmOperatorType *ot);
 void GRAPH_OT_handle_type(struct wmOperatorType *ot);
 void GRAPH_OT_interpolation_type(struct wmOperatorType *ot);
 void GRAPH_OT_extrapolation_type(struct wmOperatorType *ot);
+void GRAPH_OT_easing_type(struct wmOperatorType *ot);
 
 void GRAPH_OT_frame_jump(struct wmOperatorType *ot);
 void GRAPH_OT_snap(struct wmOperatorType *ot);