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Up to 'DeformToInterval' in wcat project

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This commit is contained in:
Grant Sanderson
2016-10-28 16:34:51 -07:00
parent 62f1991dc9
commit cdde0ea0a7
1 changed files with 36 additions and 10 deletions
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46
wcat.py
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@ -184,7 +184,7 @@ class ClosedLoopScene(Scene):
anims += self.get_line_anims() anims += self.get_line_anims()
self.play(*anims) self.play(*anims)
def transform_loop(self, target_loop, **kwargs): def transform_loop(self, target_loop, added_anims = [], **kwargs):
alphas = self.get_dot_alphas() alphas = self.get_dot_alphas()
dot_anims = [] dot_anims = []
for dot, alpha in zip(self.dots, alphas): for dot, alpha in zip(self.dots, alphas):
@ -193,12 +193,9 @@ class ClosedLoopScene(Scene):
dot_anims.append(MoveToTarget(dot)) dot_anims.append(MoveToTarget(dot))
self.play( self.play(
Transform(self.loop, target_loop), Transform(self.loop, target_loop),
*dot_anims + self.get_line_anims(), *dot_anims + self.get_line_anims() + added_anims,
**kwargs **kwargs
) )
self.remove(self.loop)
self.loop = target_loop
self.add(self.loop, self.dots, self.connecting_lines)
def highlight_dots_by_pair(self): def highlight_dots_by_pair(self):
n_pairs = len(list(self.dots))/2 n_pairs = len(list(self.dots))/2
@ -963,7 +960,6 @@ class DeformToInterval(ClosedLoopScene):
line = Line(interval.get_left(), interval.get_right()) line = Line(interval.get_left(), interval.get_right())
line.insert_n_anchor_points(self.loop.get_num_anchor_points()) line.insert_n_anchor_points(self.loop.get_num_anchor_points())
line.make_smooth() line.make_smooth()
original_line = line.copy()
self.loop.scale(0.7) self.loop.scale(0.7)
self.loop.to_edge(UP) self.loop.to_edge(UP)
@ -971,7 +967,6 @@ class DeformToInterval(ClosedLoopScene):
cut_loop = self.loop.copy() cut_loop = self.loop.copy()
cut_loop.points[0] += 0.3*(UP+RIGHT) cut_loop.points[0] += 0.3*(UP+RIGHT)
cut_loop.points[-1] += 0.3*(DOWN+RIGHT) cut_loop.points[-1] += 0.3*(DOWN+RIGHT)
original_cut_loop = cut_loop.copy()
#Unwrap loop #Unwrap loop
self.transform_loop(cut_loop, path_arc = np.pi) self.transform_loop(cut_loop, path_arc = np.pi)
@ -992,17 +987,48 @@ class DeformToInterval(ClosedLoopScene):
self.add(original_loop) self.add(original_loop)
self.add_dots_at_alphas(*np.linspace(0, 1, 20)) self.add_dots_at_alphas(*np.linspace(0, 1, 20))
self.dots.gradient_highlight(BLUE, MAROON_C, BLUE) self.dots.gradient_highlight(BLUE, MAROON_C, BLUE)
self.play(Write(self.dots)) dot_at_1 = self.dots[-1]
dot_at_1.generate_target()
dot_at_1.target.move_to(interval.get_right())
dots_copy = self.dots.copy() dots_copy = self.dots.copy()
fading_dots = VGroup(*list(self.dots)+list(dots_copy))
end_dots = VGroup(
self.dots[0], self.dots[-1],
dots_copy[0], dots_copy[-1]
)
fading_dots.remove(*end_dots)
self.play(Write(self.dots))
self.add(dots_copy) self.add(dots_copy)
self.dither() self.dither()
self.transform_loop(line, run_time = 3) self.transform_loop(
line,
added_anims = [MoveToTarget(dot_at_1)],
run_time = 3
)
self.dither() self.dither()
self.loop = original_loop self.loop = original_loop
self.dots = dots_copy self.dots = dots_copy
self.transform_loop(original_cut_loop) dot_at_1 = self.dots[-1]
dot_at_1.target.move_to(cut_loop.points[-1])
self.transform_loop(
cut_loop,
added_anims = [MoveToTarget(dot_at_1)]
)
self.dither()
fading_dots.generate_target()
fading_dots.target.set_fill(opacity = 0.3)
self.play(MoveToTarget(fading_dots))
self.play(
end_dots.shift, 0.2*UP,
rate_func = wiggle
)
self.dither() self.dither()
class RepresentPairInUnitSquare(Scene):
def construct(self):
pass