Scale Patterns

generator/engraving/scales.py

@@ -0,0 +1,14 @@
+from __future__ import annotations
+
+import bisect
+
+import generator.model
+
+def column(index, time, system_start, fonts):
+  position = bisect.bisect_right(index.scale_starts, time) - 1
+  if position < 0:
+    return []
+  span = index.scale_spans[position]
+  if time >= generator.model.fraction(span['end']) or time not in (system_start, index.scale_starts[position]):
+    return []
+  return [fonts.text(span['label'], 0, 0, 16, 'scale', (span['id'],))]