Cleanupf

2026-09-23 23:54:19 -05:00
parent a0faa9b565
commit da5640291a
24 changed files with 366 additions and 233 deletions
@@ -75,11 +75,15 @@ def compile_timeline(document: dict) -> dict:
            raise PlaybackUnavailable('grace group must steal between zero and 100 percent')
          lengths = [fraction(donor['duration']) * amount / 100 for amount in percentages]
          total = sum(lengths, Fraction())
+          delay, extension = adjustments.get(donor['id'], (Fraction(), Fraction()))
          if mode == 'steal-time-previous':
            cursor -= total
-            adjustments[donor['id']] = (Fraction(), -total)
          else:
-            adjustments[donor['id']] = (total, -total)
+            delay += total
+          extension -= total
+          if fraction(donor['duration']) + extension <= 0 or any(fraction(p['duration']) + extension <= 0 for p in donor['pitches']):
+            raise PlaybackUnavailable(f'{donor["id"]}: grace timing consumes a donor or chord tone')
+          adjustments[donor['id']] = (delay, extension)
        for item, length in zip(pending, lengths):
          value, _, pitch_state, lane_id = item
          adjustments[value['id']] = (cursor - item[1], length)