Improve environment #1

smnp/library/function/note.py

@@ -0,0 +1,31 @@
+from smnp.library.tools import returnElementOrList
+
+
+def changeDuration(args, env):
+    if len(args) == 2 and isinstance(args[0], Note) and isinstance(args[1], int):
+        return args[0].withDuration(args[1])
+    return # invalid signature
+
+
+def changeOctave(args, env):
+    if len(args) == 2 and isinstance(args[0], Note) and isinstance(args[1], int):
+        return args[0].withOctave(args[1])
+    return # invalid signature
+
+
+def tupletList(n, m, list):
+    return [note.withDuration(note.duration * n / m) for note in list]
+
+
+def tuplet(args, env):
+    if len(args) > 2 and type(args[0]) == int and type(args[1]) == int and all(type(x) == Note for x in args[2:]):
+        n = args[0] # how many notes
+        m = args[1] # instead of number of notes (3-tuplet: 3 instead 2; 5-tuplet: 5 instead 4 etc.)
+        return returnElementOrList(tupletList(n, m, args[2:]))
+    elif len(args) == 3 and type(args[0]) == int and type(args[1]) == int and type(args[2]) == list and all(type(x) == Note for x in args[2]):
+        n = args[0]
+        m = args[1]
+        l = args[2]
+        return returnElementOrList(tupletList(n, m, l))
+    else:
+        pass # not valid signature