diff options
Diffstat (limited to 'source/blender/blenkernel/intern/fcurve.c')
| -rw-r--r-- | source/blender/blenkernel/intern/fcurve.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/source/blender/blenkernel/intern/fcurve.c b/source/blender/blenkernel/intern/fcurve.c index a7d375cb955..f547b483092 100644 --- a/source/blender/blenkernel/intern/fcurve.c +++ b/source/blender/blenkernel/intern/fcurve.c @@ -169,6 +169,37 @@ FCurve *list_find_fcurve (ListBase *list, const char rna_path[], const int array return NULL; } +/* Calculate the extents of F-Curve's keyframes */ +void calc_fcurve_range (FCurve *fcu, float *start, float *end) +{ + float min=999999999.0f, max=-999999999.0f; + short foundvert=0; + + if (fcu->totvert) { + if (fcu->bezt) { + min= MIN2(min, fcu->bezt[0].vec[1][0]); + max= MAX2(max, fcu->bezt[fcu->totvert-1].vec[1][0]); + } + else if (fcu->fpt) { + min= MIN2(min, fcu->fpt[0].vec[0]); + max= MAX2(max, fcu->fpt[fcu->totvert-1].vec[0]); + } + + foundvert=1; + } + + /* minimum length is 1 frame */ + if (foundvert) { + if (min == max) max += 1.0f; + *start= min; + *end= max; + } + else { + *start= 0.0f; + *end= 1.0f; + } +} + /* ***************************** Keyframe Column Tools ********************************* */ /* add a BezTriple to a column */ |