Sybren A. Stüvel
b83a8d6fc4
Previously there were two functions for FCurve extrapolation, one for before the first keyframe, and the other for after the last. After the previous cleanup made the variable names consistent, it was clear that the code was almost identical. The biggest difference was in the sign of many of the calculations, which was cancelled out by swapping `B-A` to `A-B`. This showed that the computations are actually the same, and the only remaining difference was which neighbouring handle to use in case of Bézier curves. No functional changes. # Conflicts: # source/blender/blenkernel/intern/fcurve.c