def construct(self):
Amplitude = 0.4
freq = 3
angular_freq = (2*np.pi)*freq
equation = lambda t: Amplitude*np.sin(t*angular_freq)
photon = functions.FunctionGraph(equation,x_min=-5,x_max=-4)
light_source = Dot(photon.points[0], radius=0.5, color=YELLOW)
tip = Arrow(photon.points[-1],photon.points[-1]+RIGHT*0.4)
self.play(GrowFromCenter(light_source))
self.play(ShowCreation(photon))
self.play(ShowCreation(tip))
photon.add(tip)
animation = ApplyMethod(photon.shift, (6,0,0))
self.play(animation)
def construct(self):
wave = functions.FunctionGraph(np.sin,x_min=-5,x_max=4)
dot = Dot(wave.points[0],color=RED,radius=0.2)
self.play(ShowCreation(wave))
self.play(GrowFromCenter(dot))
self.play(MoveAlongPath(dot,wave),rate_time=5)
def soft_plus(self):
function = lambda t: np.log(1+np.exp(t))
curve = functions.FunctionGraph(function,x_min=-6,x_max=7)
self.play(ShowCreation(curve))
def sigmoid_function(self):
function = helpers.sigmoid
wave = functions.FunctionGraph(function,x_max=6,x_min=-6)
self.play(ShowCreation(wave))
def damped_sin_wave(self):
# y(t) = e^(-t)*cos(2*pi*t)
function = lambda t: np.exp(-t)*np.cos(2*np.pi*t)
wave = functions.FunctionGraph(function,x_min=-1,x_max=5)
self.play(ShowCreation(wave))
def numpy_cos_function(self):
function = np.cos
wave = functions.FunctionGraph(function,x_min=-5,x_max=5,color=RED)
self.play(ShowCreation(wave))
def numpy_sin_function(self):
function = np.sin
wave = functions.FunctionGraph(function,x_min=-5,x_max=5)
self.play(ShowCreation(wave))
