temporal: more nuances for shift()
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@ -1038,6 +1038,8 @@ TempoMap::shift (timepos_t const & at, timecnt_t const & by)
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void
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TempoMap::shift (timepos_t const & at, BBT_Offset const & offset)
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{
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/* for now we require BBT-based shifts to be in units of whole bars */
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if (std::abs (offset.bars) < 1) {
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return;
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}
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@ -1046,13 +1048,33 @@ TempoMap::shift (timepos_t const & at, BBT_Offset const & offset)
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return;
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}
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superclock_t at_superclocks = at.superclocks();
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const superclock_t at_superclocks = at.superclocks();
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for (auto & p : _points) {
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if (p.sclock() < at_superclocks) {
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BBT_Time new_bbt (std::max (0, p.bbt().bars + offset.bars), p.bbt().beats, p.bbt().ticks);
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p.set (p.sclock(), p.beats(), new_bbt);
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for (Points::iterator p = _points.begin(); p != _points.end(); ) {
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Points::iterator nxt = p;
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++nxt;
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if (p->sclock() >= at_superclocks) {
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if (offset.bars > p->bbt().bars) {
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TempoPoint* tp;
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MeterPoint* mp;
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if (dynamic_cast<MusicTimePoint*> (&*p)) {
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break;
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} else if ((mp = dynamic_cast<MeterPoint*> (&*p))) {
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core_remove_meter (*mp);
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} else if ((tp = dynamic_cast<TempoPoint*> (&*p))) {
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core_remove_tempo (*tp);
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}
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} else {
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BBT_Time new_bbt (p->bbt().bars + offset.bars, p->bbt().beats, p->bbt().ticks);
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p->set (p->sclock(), p->beats(), new_bbt);
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}
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}
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p = nxt;
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}
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reset_starting_at (at_superclocks);
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