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import Utils
import random
from math import sqrt
import common.Config as Config
from common.Generation.GenerationConstants import GenerationConstants
class GenerationRythm:
def celluleRythmSequence(self, parameters, barLength, trackInstrument=None ):
rythmSequence = [0, ]
self.count = 0
lastOnsetTime = 0
onsetLen = len(GenerationConstants.TABLE_ONSET_VALUES)
onsetValue = int( ( 1 - (parameters.density*0.98+0.02) ) * onsetLen )
onsetDeviation = int( ( 1 - parameters.rythmRegularity ) * 20 )
currentOnsetValue = onsetValue + ( random.randint( 0, onsetDeviation ) - ( onsetDeviation / 2 ) )
if currentOnsetValue < 0:
currentOnsetValue = 0
elif currentOnsetValue >= onsetLen:
currentOnsetValue = onsetLen - 1
else:
currentOnsetValue = currentOnsetValue
onsetDelta = GenerationConstants.TABLE_ONSET_VALUES[ currentOnsetValue ]
listLen = range( int( barLength / Config.TICKS_PER_BEAT * 8 ) )
randInt = random.randint
for i in listLen:
if self.count == 0:
currentOnsetValue = onsetValue + ( randInt( 0, onsetDeviation ) - ( onsetDeviation / 2 ) )
if currentOnsetValue < 0:
currentOnsetValue = 0
elif currentOnsetValue >= onsetLen:
currentOnsetValue = onsetLen - 1
else:
currentOnsetValue = currentOnsetValue
onsetDelta = GenerationConstants.TABLE_ONSET_VALUES[ currentOnsetValue ]
if onsetDelta == GenerationConstants.DOUBLE_TICK_DUR:
if self.count < (GenerationConstants.DOUBLE_HOW_MANY - 1):
self.count += 1
else:
self.count = 0
onsetTime = onsetDelta + lastOnsetTime
lastOnsetTime = onsetTime
if onsetTime < barLength-2:
rythmSequence.append(onsetTime)
continue
else:
break
elif onsetDelta == GenerationConstants.HALF_TRIPLET_TICK_DUR:
if self.count < (GenerationConstants.HALF_TRIPLET_HOW_MANY - 1):
self.count += 1
else:
self.count = 0
onsetTime = onsetDelta + lastOnsetTime
lastOnsetTime = onsetTime
if onsetTime < barLength-2:
rythmSequence.append(onsetTime)
continue
else:
break
elif onsetDelta == GenerationConstants.HOLE_TRIPLET_TICK_DUR:
if self.count < (GenerationConstants.HOLE_TRIPLET_HOW_MANY - 1):
self.count += 1
else:
self.count = 0
onsetTime = onsetDelta + lastOnsetTime
lastOnsetTime = onsetTime
if onsetTime < barLength-2:
rythmSequence.append(onsetTime)
continue
else:
break
onsetTime = onsetDelta + lastOnsetTime
lastOnsetTime = onsetTime
if onsetTime < barLength-2:
rythmSequence.append(onsetTime)
else:
break
return rythmSequence
def xnoiseRythmSequence(self, parameters, barLength ):
rythmSequence = []
onsetTime = None
randomParamScaler = parameters.rythmRegularity * 2 + 0.5
# need radioButton with 0 for random choose and each generator independant
whichRandomGenerator = random.randint(0, 4)
maximumNumberOfNotes = int( (parameters.density) * GenerationConstants.MAX_NOTES_PER_BAR)
for i in range(maximumNumberOfNotes):
while onsetTime in rythmSequence:
if whichRandomGenerator == 0:
onsetTime = random.expovariate(GenerationConstants.RANDOM_EXPO_PARAM * randomParamScaler)
elif whichRandomGenerator == 1:
onsetTime = 1 - random.expovariate(GenerationConstants.RANDOM_EXPO_PARAM * randomParamScaler)
elif whichRandomGenerator == 2:
onsetTime = random.gauss(GenerationConstants.RANDOM_GAUSS_PARAM1,
GenerationConstants.RANDOM_GAUSS_PARAM2 * (3 - randomParamScaler))
elif whichRandomGenerator == 3:
onsetTime = random.betavariate(GenerationConstants.RANDOM_BETA_PARAM * randomParamScaler,
GenerationConstants.RANDOM_BETA_PARAM * randomParamScaler)
elif whichRandomGenerator == 4:
onsetTime = random.weibullvariate(GenerationConstants.RANDOM_WEIBULL_PARAM1,
GenerationConstants.RANDOM_WEIBULL_PARAM2 * randomParamScaler)
onsetTime = int(onsetTime * (int(( barLength - 1) / GenerationConstants.DOUBLE_TICK_DUR))) * GenerationConstants.DOUBLE_TICK_DUR
if onsetTime < 0:
onsetTime = 0
elif onsetTime > ( barLength - GenerationConstants.DOUBLE_TICK_DUR):
onsetTime = ( barLength - GenerationConstants.DOUBLE_TICK_DUR)
else:
onsetTime = onsetTime
rythmSequence.append(onsetTime)
rythmSequence.sort()
return rythmSequence
def drumRythmSequence(self, parameters, trackInstrument, barLength ):
density = sqrt(parameters.density)
rythmSequence = []
binSelection = []
downBeats = []
upBeats = []
beats = []
countDown = 0
onsetTime = None
beatsPerPage = int( barLength / Config.TICKS_PER_BEAT )
randInt = random.randint
upBeatsAppend = upBeats.append
if Config.INSTRUMENTS[ trackInstrument ].instrumentRegister == Config.PUNCH:
registerDensity = 0.5
downBeatRecurence = 4
upBeatOffset = Config.TICKS_PER_BEAT / 2
downBeats = [x for x in GenerationConstants.DRUM_PUNCH_ACCENTS[ beatsPerPage ]]
for downBeat in downBeats:
upBeatsAppend( downBeat + upBeatOffset )
elif Config.INSTRUMENTS[ trackInstrument ].instrumentRegister == Config.LOW:
registerDensity = 1.5
downBeatRecurence = 4
upBeatOffset = Config.TICKS_PER_BEAT / 2
downBeats = [x for x in GenerationConstants.DRUM_LOW_ACCENTS[ beatsPerPage ]]
for downBeat in downBeats:
upBeatsAppend( downBeat + upBeatOffset )
elif Config.INSTRUMENTS[ trackInstrument ].instrumentRegister == Config.MID:
registerDensity = 1
downBeatRecurence = 1
upBeatOffset = Config.TICKS_PER_BEAT / 4
downBeats = [x for x in GenerationConstants.DRUM_MID_ACCENTS[ beatsPerPage ]]
for downBeat in downBeats:
upBeatsAppend( downBeat + upBeatOffset )
elif Config.INSTRUMENTS[ trackInstrument ].instrumentRegister == Config.HIGH:
registerDensity = 1.5
downBeatRecurence = 1
upBeatOffset = Config.TICKS_PER_BEAT / 4
downBeats = [x for x in GenerationConstants.DRUM_HIGH_ACCENTS[ beatsPerPage ]]
for downBeat in downBeats:
upBeatsAppend( downBeat + upBeatOffset )
list = range( int( density * registerDensity * len( downBeats ) ) )
rand = random.random
binCount = binSelection.count
binAppend = binSelection.append
for i in list:
if rand() < ( parameters.rythmRegularity * downBeatRecurence ) and binCount( 1 ) < len( downBeats ):
binAppend( 1 )
else:
if binCount( 0 ) < len( downBeats ):
binAppend( 0 )
else:
binAppend( 1 )
countDown = binCount( 1 )
seqAppend = rythmSequence.append
length = len(downBeats) - 1
downPop = downBeats.pop
for i in range( countDown ):
ran1 = randInt(0, length)
ran2 = randInt(0, length)
randMin = min(ran1, ran2)
onsetTime = downPop(randMin)
seqAppend( onsetTime )
length -= 1
length = len(upBeats) - 1
upPop = upBeats.pop
for i in range( len( binSelection ) - countDown ):
ran1 = randInt(0, length)
ran2 = randInt(0, length)
randMin = min(ran1, ran2)
onsetTime = upPop(randMin)
seqAppend( onsetTime )
length -= 1
rythmSequence.sort()
return rythmSequence
def makeCellule( self, currentDuration, targetDuration, threshold ):
threshold = threshold - 1
if currentDuration == targetDuration:
if self.count < threshold:
self.count += 1
else:
self.count = 0
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