def _text_opacity(self):
age = self.age()
if age < self._peer_info_fade_in:
return sigmoid(age / self._peer_info_fade_in)
elif age > (self.duration - self._peer_info_fade_out):
return 1 - sigmoid(1 - (self.duration - age) / self._peer_info_fade_out)
else:
return 1
def relative_size(self):
age = self.age()
if age < self._fade_time:
return sigmoid(age / self._fade_time)
elif age > (self.duration - self._fade_time):
return 1 - sigmoid(1 - (self.duration - age) / self._fade_time)
else:
return 1
def relative_size(self):
age = self.age()
if age > (self.duration - self._fade_time):
return 1 - sigmoid(1 - (self.duration - age) / self._fade_time)
else:
self._amp_smoother.smooth(
max([abs(value) for value in self.waveform]),
self.visualizer.time_increment)
return sigmoid(pow(max(self._amp_smoother.value(), 0), 0.25))
def position_and_orientation(self, t):
if t < self._script[0]["t"]:
return (self._script[0]["position"],
self._script[0]["orientation"])
else:
n1 = self._get_keyframe_index(t)
if n1 is None:
return (self._script[-1]["position"],
self._script[-1]["orientation"])
else:
n2 = n1 + 1
t1 = self._script[n1]["t"]
t2 = self._script[n2]["t"]
opacity2 = sigmoid((t - t1) / (t2 - t1))
position1 = self._script[n1]["position"]
position2 = self._script[n2]["position"]
position = position1 + (position2 - position1) * opacity2
orientation1 = self._script[n1]["orientation"]
orientation2 = self._script[n2]["orientation"]
orientation = orientation1 + (orientation2 - orientation1) * opacity2
return (position, orientation)
def amp_controlled_color(self, weak_color, strong_color, amp):
return weak_color + (strong_color - weak_color) * sigmoid(pow(amp, 0.25))
def compute_thresholded_activation(self, activation):
"Applies the sigmoidal function to the given activation."
return math_tools.sigmoid(activation, self._sigmoid_steepness,
self._sigmoid_shift)
