def get_pitch(self, inst, fn):
target = inst.pitch
if not hasattr(inst, 'prev_pitch'):
return fn()
diff = target - inst.prev_pitch
dur = inst._get('dur')
fraction_sliding = float(self.amt)/dur # the fraction of total dur spent sliding
if fraction_sliding >= 1: # we never actually get there...
slidetable = rtcmix.maketable('line', 'nonorm', 1000, 0,0, 1, diff / fraction_sliding)
else:
slidetable = rtcmix.maketable('line', 'nonorm', 1000, 0,0, fraction_sliding,diff, 1,diff)
return fn()-diff+slidetable
def get_amp(self, inst, fn):
points = []
total_time = 0
prev_amp = 0
for time,amp in (0,0), (self.a,1), (self.d,self.s):
if total_time+time > inst.dur:
new_time = inst.dur-total_time
total_time += new_time
new_amp = prev_amp - (float(prev_amp - amp) * new_time/time)
time = new_time
amp = new_amp
points.append((time, amp))
break
total_time += time
prev_amp = amp
points.append((time, amp))
if total_time < inst.dur:
points.append((inst.dur-total_time,self.s))
points.append((self.r, 0))
args = []
total_time = 0
for time,amp in points:
total_time += time
args.extend((total_time, amp))
env = rtcmix.maketable('line', 'nonorm', 1000, 0,0, *args)
return fn() * env
def get_pitch(self, inst, fn):
if self.amt <= 0:
return fn()
return fn() * (1+rtcmix.maketable('random', 'nonorm', self.points, "even", 1./(1+self.amt)-1, self.amt))
