Graph Editor: Added operator to 'bake' keyframe-based F-Curves to be composed of samples.

This operator can be activated using the 'Alt-C' hotkey for now, and operates on selected + editable F-Curves. This is currently still highly experimental, and does crash

I've implemented this as a way to test out the FPoints/samples code, which will be used to provide better support of the dense F-Curves which result from importing Mocap/BVH data. These should use considerably less memory + have a few additional benefits over keyframes when they're working in a stable fashion.

1 files changed, 21 insertions, 0 deletions

diff --git a/source/blender/blenkernel/BKE_fcurve.h b/source/blender/blenkernel/BKE_fcurve.h
index dd5e0dd6e21..a8b1ad49648 100644
--- a/source/blender/blenkernel/BKE_fcurve.h
+++ b/source/blender/blenkernel/BKE_fcurve.h
@@ -108,5 +108,26 @@ float evaluate_fcurve(struct FCurve *fcu, float evaltime);
 /* evaluate fcurve and store value */
 void calculate_fcurve(struct FCurve *fcu, float ctime);
 
+/* ************* F-Curve Samples API ******************** */
+
+/* -------- Defines --------  */
+
+/* Basic signature for F-Curve sample-creation function 
+ *	- fcu: the F-Curve being operated on
+ *	- data: pointer to some specific data that may be used by one of the callbacks
+ */
+typedef float (*FcuSampleFunc)(struct FCurve *fcu, void *data, float evaltime);
+
+/* ----- Sampling Callbacks ------  */
+
+/* Basic sampling callback which acts as a wrapper for evaluate_fcurve() */
+float fcurve_samplingcb_evalcurve(struct FCurve *fcu, void *data, float evaltime);
+
+/* -------- Main Methods --------  */
+
+/* Main API function for creating a set of sampled curve data, given some callback function 
+ * used to retrieve the values to store.
+ */
+void fcurve_store_samples(struct FCurve *fcu, void *data, int start, int end, FcuSampleFunc sample_cb);
 
 #endif /* BKE_FCURVE_H*/