def searchCounter(mode, note, cantus, depth, plagal, lastNode=None):
# print('starting serch counter '+str(note))
# print(depth)
print('\n start search ' + str(depth))
print('sequence ' + str(note))
if depth == 0:
# print('generating counter '+str(note))
newNode = Node(note)
else:
# print('constructing child '+str(note) + ' from :'+str(lastNode.note))
newNode = Node(note, lastNode)
if not newNode.isValid(True, mode):
print('---invalid melody ' + str(newNode.sequence))
# print(str(note)+' invalid melody')
return
else:
print('---valid melody')
print(newNode.sequence)
if not newNode.validateVoice1(cantus):
# print(str(note)+' invalid counter')
print('---invalid counter')
return False
else:
print('---valid counterpoint')
if depth + 1 == maxDepth:
counterP.append(newNode)
return
shift = 4 if plagal else 0
# print('generating children')
if depth == 0:
print('mode is ' + str(Note(mode).name))
searchCounter(mode, mode - 1, cantus, 1, plagal, newNode)
return
if depth + 2 == maxDepth:
searchCounter(mode, mode, cantus, depth + 1, plagal, newNode)
searchCounter(mode, mode + 4, cantus, depth + 1, plagal, newNode)
return
for i in range(mode - shift, mode + 7 - shift):
interval = i - cantus[depth + 1]
print('index' + str(i))
print('step ' + str(depth))
print('cantus ' + str(cantus[depth]))
print('diatonic interval' + str(Note.diatonic(interval)))
interval = Note.diatonic(interval) % 12
if interval == 1:
continue
if interval == 2:
continue
if interval == 5:
continue
if interval == 6:
continue
if interval == 10:
continue
if interval == 11:
continue
searchCounter(mode, i, cantus, depth + 1, plagal, newNode)
