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tweaking some diffyq content
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Grant Sanderson
parent
61bb4944fa
commit
d6876b995d
6 changed files with 1446 additions and 126 deletions
1
.gitignore
vendored
1
.gitignore
vendored
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@ -7,6 +7,7 @@ cairo_test.py
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mayavi_test.py
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random_scenes/
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files/
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assets/
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ben_playground.py
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ben_cairo_test.py
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.floo
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@ -1,40 +0,0 @@
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#!/usr/bin/env python
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from manimlib.imports import *
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from active_projects.diffyq.part2.fourier_series import FourierOfName
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name_color_pairs = [
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]
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circle_counts = [
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# 10,
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# 25,
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100,
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]
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if __name__ == "__main__":
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for name, color in name_color_pairs:
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for n_circles in circle_counts:
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try:
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first_name = name.split(" ")[0]
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scene = FourierOfName(
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name_text=name,
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name_color=color,
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n_circles=n_circles,
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file_writer_config={
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"write_to_movie": True,
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"output_directory": os.path.join(
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"patron_fourier_names",
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first_name,
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),
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"file_name": "{}_Fouierified_{}_Separate_paths".format(
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first_name,
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n_circles
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),
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},
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camera_config={
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"frame_rate": 24,
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},
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)
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except:
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pass
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@ -2012,11 +2012,18 @@ class ManyStepsFromDifferentStartingPoints(TakeManyTinySteps):
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class Thumbnail(IntroduceVectorField):
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CONFIG = {
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"vector_field_config": {
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"delta_x": 0.5,
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"delta_y": 0.5,
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# "delta_x": 0.5,
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# "delta_y": 0.5,
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# "max_magnitude": 5,
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# "length_func": lambda norm: 0.5 * sigmoid(norm),
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"delta_x": 1,
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"delta_y": 1,
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"max_magnitude": 5,
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"length_func": lambda norm: 0.5 * sigmoid(norm),
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}
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"length_func": lambda norm: 0.9 * sigmoid(norm),
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},
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"big_pendulum_config": {
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"damping": 0.4,
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},
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}
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def construct(self):
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@ -2027,7 +2034,7 @@ class Thumbnail(IntroduceVectorField):
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field = self.vector_field
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field.set_stroke(width=5)
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for vector in field:
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vector.set_stroke(width=3)
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vector.set_stroke(width=8)
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vector.tip.set_stroke(width=0)
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vector.tip.scale(1.5, about_point=vector.get_last_point())
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vector.set_opacity(1)
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@ -2063,17 +2070,43 @@ class Thumbnail(IntroduceVectorField):
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new_mob.set_stroke(width=0)
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black_parts.add(new_mob)
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for vect in field:
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for mob in title.family_members_with_points():
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for p in [vect.get_start(), vect.get_end()]:
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x, y = p[:2]
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x0, y0 = mob.get_corner(DL)[:2]
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x1, y1 = mob.get_corner(UR)[:2]
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if x0 < x < x1 and y0 < y < y1:
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vect.set_opacity(0.25)
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vect.tip.set_stroke(width=0)
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# for vect in field:
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# for mob in title.family_members_with_points():
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# for p in [vect.get_start(), vect.get_end()]:
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# x, y = p[:2]
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# x0, y0 = mob.get_corner(DL)[:2]
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# x1, y1 = mob.get_corner(UR)[:2]
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# if x0 < x < x1 and y0 < y < y1:
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# vect.set_opacity(0.25)
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# vect.tip.set_stroke(width=0)
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self.add(self.plane)
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self.add(field)
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self.add(black_parts)
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self.add(title)
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# self.add(black_parts)
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# self.add(title)
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self.add_line(self.plane)
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def add_line(self, axes):
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func = self.vector_field_func
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line = VMobject()
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line.start_new_path(axes.c2p(-TAU, 3.5))
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dt = 0.1
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t = 0
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total_time = 40
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while t < total_time:
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t += dt
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last_point = line.get_last_point()
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new_point = last_point + dt * func(last_point)
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if new_point[0] > FRAME_WIDTH / 2:
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new_point = last_point + FRAME_WIDTH * LEFT
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line.start_new_path(new_point)
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else:
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line.add_smooth_curve_to(new_point)
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line.set_stroke(WHITE, 6)
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line.make_smooth()
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self.add(line)
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@ -379,6 +379,7 @@ class FourierOfName(FourierOfPiSymbol):
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"name_text": "Abc",
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"time_per_symbol": 5,
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"slow_factor": 1 / 5,
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"parametric_function_step_size": 0.01,
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}
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def construct(self):
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@ -389,31 +390,49 @@ class FourierOfName(FourierOfPiSymbol):
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if name.get_height() > max_height:
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name.set_height(max_height)
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vectors = VGroup(VectorizedPoint())
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circles = VGroup(VectorizedPoint())
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for path in name.family_members_with_points():
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for subpath in path.get_subpaths():
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sp_mob = VMobject()
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sp_mob.set_points(subpath)
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coefs = self.get_coefficients_of_path(sp_mob)
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new_circles = self.get_circles(
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new_vectors = self.get_rotating_vectors(
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coefficients=coefs
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)
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new_circles = self.get_circles(new_vectors)
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self.set_decreasing_stroke_widths(new_circles)
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drawn_path = self.get_drawn_path(new_circles)
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drawn_path = self.get_drawn_path(new_vectors)
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drawn_path.clear_updaters()
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drawn_path.set_stroke(self.name_color, 3)
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new_circles.suspend_updating()
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self.play(ReplacementTransform(circles, new_circles))
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new_circles.resume_updating()
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circles = new_circles
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static_vectors = VMobject().become(new_vectors)
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static_circles = VMobject().become(new_circles)
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# static_circles = new_circles.deepcopy()
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# static_vectors.clear_updaters()
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# static_circles.clear_updaters()
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self.play(
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Transform(vectors, static_vectors, remover=True),
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Transform(circles, static_circles, remover=True),
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)
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self.add(new_vectors, new_circles)
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self.vector_clock.set_value(0)
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self.play(
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ShowCreation(drawn_path),
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rate_func=linear,
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run_time=self.time_per_symbol
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)
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circles.suspend_updating()
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self.play(FadeOut(circles))
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self.remove(new_vectors, new_circles)
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self.add(static_vectors, static_circles)
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vectors = static_vectors
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circles = static_circles
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self.play(
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FadeOut(vectors)
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)
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self.wait(3)
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File diff suppressed because it is too large
Load diff
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@ -45,7 +45,7 @@ def stage_scenes(module_name):
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animation_dir = os.path.join(
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os.path.expanduser('~'),
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"Dropbox (3Blue1Brown)/3Blue1Brown Team Folder/videos",
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"diffyq", "part4", "1440p60"
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"diffyq", "part5", "1440p60"
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)
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#
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files = os.listdir(animation_dir)
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