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Add guard-points when shifting automation

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This commit is contained in:
Robin Gareus 2018-12-22 02:04:17 +01:00
parent 616f7f40b6
commit 6fa1c58cec
Signed by: rgareus
GPG Key ID: A090BCE02CF57F04
1 changed files with 32 additions and 1 deletions
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33
libs/evoral/src/ControlList.cpp
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@ -990,21 +990,52 @@ ControlList::shift (double pos, double frames)
{
{
Glib::Threads::RWLock::WriterLock lm (_lock);
double v0, v1;
if (frames < 0) {
/* Route::shift () with negative shift is used
* for "remove time". The time [pos.. pos-frames] is removed.
* and everyhing after, moved backwards.
* TODO: consider adding guard-points (need special-casing)
*/
v0 = unlocked_eval (pos);
v1 = unlocked_eval (pos - frames);
erase_range_internal (pos, pos - frames, _events);
} else {
v0 = v1 = unlocked_eval (pos);
}
bool dst_guard_exists = false;
for (iterator i = _events.begin(); i != _events.end(); ++i) {
if ((*i)->when == pos) {
dst_guard_exists = true;
}
if ((*i)->when >= pos) {
(*i)->when += frames;
}
}
/* add guard-points to retain shape, if needed */
if (frames > 0) {
ControlEvent cp (pos, 0.0);
iterator s = lower_bound (_events.begin(), _events.end(), &cp, time_comparator);
if (s != _events.end ()) {
_events.insert (s, new ControlEvent (pos, v0));
}
pos += frames;
} else if (frames < 0 && pos > 0) {
ControlEvent cp (pos - 1, 0.0);
iterator s = lower_bound (_events.begin(), _events.end(), &cp, time_comparator);
if (s != _events.end ()) {
_events.insert (s, new ControlEvent (pos - 1, v0));
}
}
if (!dst_guard_exists) {
ControlEvent cp (pos, 0.0);
iterator s = lower_bound (_events.begin(), _events.end(), &cp, time_comparator);
_events.insert (s, new ControlEvent (pos, s == _events.end () ? v0 : v1));
}
mark_dirty ();
}