diff options
Diffstat (limited to 'source/blender/blenkernel/intern/nla.c')
| -rw-r--r-- | source/blender/blenkernel/intern/nla.c | 31 |
1 files changed, 21 insertions, 10 deletions
diff --git a/source/blender/blenkernel/intern/nla.c b/source/blender/blenkernel/intern/nla.c index 1ba82b352d1..e5527ed987a 100644 --- a/source/blender/blenkernel/intern/nla.c +++ b/source/blender/blenkernel/intern/nla.c @@ -1361,6 +1361,25 @@ static void nlastrip_fix_resize_overlaps(NlaStrip *strip) } } +/** Recalculate the start and end frames for the strip to match the bounds of its action such that + * the overall NLA animation result is unchanged. */ +void BKE_nlastrip_recalculate_bounds_sync_action(NlaStrip *strip) +{ + float prev_actstart; + + if (strip == NULL || strip->type != NLASTRIP_TYPE_CLIP) { + return; + } + + prev_actstart = strip->actstart; + + calc_action_range(strip->act, &strip->actstart, &strip->actend, 0); + + /* Set start such that key's do not visually move, to preserve the overall animation result. */ + strip->start += (strip->actstart - prev_actstart) * strip->scale; + + BKE_nlastrip_recalculate_bounds(strip); +} /* Recalculate the start and end frames for the current strip, after changing * the extents of the action or the mapping (repeats or scale factor) info */ @@ -2133,11 +2152,7 @@ void BKE_nla_tweakmode_exit(AnimData *adt) /* must be action-clip only (transitions don't have scale) */ if ((strip->type == NLASTRIP_TYPE_CLIP) && (strip->act)) { - /* recalculate the length of the action */ - calc_action_range(strip->act, &strip->actstart, &strip->actend, 0); - - /* adjust the strip extents in response to this */ - BKE_nlastrip_recalculate_bounds(strip); + BKE_nlastrip_recalculate_bounds_sync_action(strip); } } @@ -2151,11 +2166,7 @@ void BKE_nla_tweakmode_exit(AnimData *adt) /* sync strip extents if this strip uses the same action */ if ((adt->actstrip) && (adt->actstrip->act == strip->act) && (strip->flag & NLASTRIP_FLAG_SYNC_LENGTH)) { - /* recalculate the length of the action */ - calc_action_range(strip->act, &strip->actstart, &strip->actend, 0); - - /* adjust the strip extents in response to this */ - BKE_nlastrip_recalculate_bounds(strip); + BKE_nlastrip_recalculate_bounds_sync_action(strip); } /* clear tweakuser flag */ |