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Began setup of WhiteComplexExponentialExpression in fourier

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This commit is contained in:
Grant Sanderson 2018-01-23 12:05:17 -08:00
parent 0c7698da55
commit d9f0c31eb1
1 changed files with 42 additions and 3 deletions
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45
active_projects/fourier.py
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@ -2455,18 +2455,57 @@ class WhiteComplexExponentialExpression(DrawFrequencyPlot):
self.generate_center_of_mass_dot_update_anim() self.generate_center_of_mass_dot_update_anim()
self.add(graph, pol_graph, wps_label) self.add(graph, pol_graph, wps_label)
self.set_variables_as_attrs(pol_graph, wps_label)
self.time_axes_group = VGroup(self.time_axes, graph)
def show_winding_with_both_coordinates(self): def show_winding_with_both_coordinates(self):
#TODO, tie dashed lines to dot com_dot = self.center_of_mass_dot
plane = self.circle_plane
v_line = Line(ORIGIN, UP)
h_line = Line(ORIGIN, RIGHT)
lines = VGroup(v_line, h_line)
lines.highlight(PINK)
def lines_update(lines):
point = com_dot.get_center()
x, y = plane.point_to_coords(point)
h_line.put_start_and_end_on(
plane.coords_to_point(0, y), point
)
v_line.put_start_and_end_on(
plane.coords_to_point(x, 0), point
)
lines_update_anim = UpdateFromFunc(lines, lines_update)
lines_update_anim.update(0)
self.add(lines)
self.change_frequency( self.change_frequency(
2.0, run_time = 15, 2.04,
added_anims = [
lines_update_anim,
self.center_of_mass_dot_anim,
],
run_time = 15,
rate_func = bezier([0, 0, 1, 1]) rate_func = bezier([0, 0, 1, 1])
) )
self.wait() self.wait()
self.dot_component_anim = lines_update_anim
def show_plane_as_complex_plane(self): def show_plane_as_complex_plane(self):
pass to_fade = VGroup(
self.time_axes_group, self.pol_graph, self.wps_label
)
plane = self.circle_plane
complex_plane_title = TextMobject("Complex plane")
complex_plane_title.add_background_rectangle()
complex_plane_title.to_edge(UP)
coordinate_labels = plane.get_coordinate_labels()
self.play(FadeOut(to_fade))
self.play(Write(complex_plane_title))
self.play(Write(coordinate_labels))
self.wait()
def show_eulers_formula(self): def show_eulers_formula(self):
pass pass