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https://github.com/3b1b/manim.git
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First full pass of crypto animations
This commit is contained in:
Grant Sanderson
634
crypto.py
634
crypto.py
@ -65,6 +65,28 @@ def sha256_tex_mob(message, n_forced_start_zeros = 0):
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return result
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class EthereumLogo(SVGMobject):
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CONFIG = {
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"file_name" : "ethereum_logo",
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"stroke_width" : 0,
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"fill_opacity" : 1,
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"color_chars" : "8B8B48",
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"height" : 0.5,
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}
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def __init__(self, **kwargs):
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SVGMobject.__init__(self, **kwargs)
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for part, char in zip(self.submobjects, self.color_chars):
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part.highlight("#" + 6*char)
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class LitecoinLogo(SVGMobject):
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CONFIG = {
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"file_name" : "litecoin_logo",
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"stroke_width" : 0,
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"fill_opacity" : 1,
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"fill_color" : LIGHT_GREY,
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"height" : 0.5,
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}
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class TenDollarBill(VGroup):
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CONFIG = {
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"color" : GREEN,
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@ -159,12 +181,6 @@ class AskQuestion(Scene):
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self.dither(self.time_per_char*n_spaces)
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self.dither(2)
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# class BitcoinPaperHighlightTitle(ExternallyAnimatedScene):
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# pass
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# class TimeBitcoinCover(ExternallyAnimatedScene):
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# pass
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class ListOfAttributes(Scene):
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def construct(self):
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logo = BitcoinLogo()
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@ -321,6 +337,81 @@ class Hype(TeacherStudentsScene):
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)
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self.dither(3)
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class NoCommentOnSpeculation(TeacherStudentsScene):
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def construct(self):
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axes = VGroup(
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Line(0.25*LEFT, 4*RIGHT),
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Line(0.25*DOWN, 3*UP),
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)
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times = np.arange(0, 4.25, 0.25)
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prices = [
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0.1, 0.5, 1.75, 1.5,
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2.75, 2.2, 1.3, 0.8,
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1.1, 1.3, 1.2, 1.4,
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1.5, 1.7, 1.2, 1.3,
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]
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graph = VMobject()
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graph.set_points_as_corners([
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time*RIGHT + price*UP
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for time, price in zip(times, prices)
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])
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graph.set_stroke(BLUE)
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group = VGroup(axes, graph)
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group.next_to(self.teacher, UP+LEFT)
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cross = Cross(group)
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mining_graphic = ImageMobject("bitcoin_mining_graphic")
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mining_graphic.scale_to_fit_height(2)
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mining_graphic.next_to(self.teacher, UP+LEFT)
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mining_cross = Cross(mining_graphic)
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mining_cross.set_stroke(RED, 8)
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axes.save_state()
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axes.shift(DOWN)
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axes.fade(1)
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self.play(
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self.teacher.change, "sassy",
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axes.restore,
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)
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self.play(ShowCreation(
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graph, run_time = 2,
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rate_func = None
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))
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self.dither()
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self.play(ShowCreation(cross))
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group.add(cross)
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self.play(
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group.shift, 2*SPACE_WIDTH*RIGHT,
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self.teacher.change, "happy"
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)
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self.dither()
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self.student_says(
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"But...what are they?",
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student_index = 0,
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target_mode = "confused"
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)
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self.dither(2)
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self.play(
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FadeIn(mining_graphic),
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RemovePiCreatureBubble(self.students[0]),
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self.teacher.change, "sassy",
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)
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self.play(ShowCreation(mining_cross))
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self.dither()
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self.play(
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VGroup(mining_graphic, mining_cross).shift,
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2*SPACE_WIDTH*RIGHT
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)
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black_words = TextMobject("Random words\\\\Blah blah")
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black_words.highlight(BLACK)
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self.teacher_thinks(black_words)
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self.zoom_in_on_thought_bubble()
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class MiningIsALotteryCopy(ExternallyAnimatedScene):
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pass
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class LedgerScene(PiCreatureScene):
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CONFIG = {
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"ledger_width" : 6,
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@ -407,7 +498,7 @@ class LedgerScene(PiCreatureScene):
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amount_color = {
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"USD" : GREEN,
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"BTC" : BITCOIN_COLOR,
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"BTC" : YELLOW,
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"LD" : YELLOW,
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}.get(self.denomination, WHITE)
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line.highlight_by_tex(amount_str, amount_color)
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@ -4197,29 +4288,514 @@ class VariableProofOfWork(WhenToTrustANewBlock):
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e = self.n_proof_of_work_digits
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return Integer(random.randint(10**e, 10**(e+1)))
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class CompareBLockTimes(Scene):
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class CompareBlockTimes(Scene):
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def construct(self):
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pass
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title = TextMobject("Average block time")
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title.scale(1.5)
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title.to_edge(UP)
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h_line = Line(LEFT, RIGHT)
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h_line.scale_to_fit_width(SPACE_WIDTH)
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h_line.next_to(title, DOWN, SMALL_BUFF)
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examples = VGroup(
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TextMobject("BTC: ", "10 minutes"),
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TextMobject("ETH: ", "15 Seconds"),
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TextMobject("XRP: ", "3.5 Seconds"),
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TextMobject("LTC: ", "2.5 Minutes"),
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)
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examples.arrange_submobjects(
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DOWN,
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buff = LARGE_BUFF,
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aligned_edge = LEFT,
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)
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examples.next_to(h_line, DOWN)
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logos = VGroup(
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BitcoinLogo(),
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ImageMobject("ethereum_logo"),
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ImageMobject("ripple_logo"),
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SVGMobject(
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file_name = "litecoin_logo",
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stroke_width = 0,
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fill_opacity = 1,
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fill_color = LIGHT_GREY,
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),
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)
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colors = [BITCOIN_COLOR, BLUE_D, BLUE_B, LIGHT_GREY]
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for logo, example, color in zip(logos, examples, colors):
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logo.scale_to_fit_height(0.5)
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logo.next_to(example, LEFT)
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example[0].highlight(color)
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self.add(title, h_line)
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self.play(
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FadeIn(examples[0]),
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DrawBorderThenFill(logos[0])
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)
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self.dither()
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self.play(*[
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LaggedStart(FadeIn, VGroup(*group[1:]))
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for group in examples, logos
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])
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self.dither(2)
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# def get_ethereum_logo(self):
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# logo = SVGMobject(
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# file_name = "ethereum_logo",
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# height = 1,
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# )
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# logo.set_fill(GREEN, 1)
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# logo.set_stroke(WHITE, 3)
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# logo.gradient_highlight(GREEN_B, GREEN_D)
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# logo.scale_to_fit_width(1)
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# logo.center()
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# self.add(SurroundingRectangle(logo))
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# return logo
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class BlockRewards(Scene):
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def construct(self):
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title = TextMobject("Block rewards")
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title.scale(1.5)
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logo = BitcoinLogo()
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logo.scale_to_fit_height(0.75)
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logo.next_to(title, LEFT)
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title.add(logo)
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title.to_edge(UP)
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h_line = Line(LEFT, RIGHT)
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h_line.scale_to_fit_width(SPACE_WIDTH)
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h_line.next_to(title, DOWN)
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self.add(title, logo, h_line)
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rewards = VGroup(
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TextMobject("Jan 2009 - Nov 2012:", "50", "BTC"),
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TextMobject("Nov 2012 - Jul 2016:", "25", "BTC"),
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TextMobject("Jul 2016 - Feb 2020$^*$:", "12.5", "BTC"),
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TextMobject("Feb 2020$^*$ - Sep 2023$^*$:", "6.25", "BTC"),
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)
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rewards.arrange_submobjects(
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DOWN,
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buff = MED_LARGE_BUFF,
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aligned_edge = LEFT
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)
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rewards.next_to(h_line, DOWN)
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for reward in rewards:
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reward[1].highlight(YELLOW)
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footnote = TextMobject(
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"$^*$ Extrapolating from the 25 BTC reward period"
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)
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footnote.scale(0.5)
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footnote.to_corner(DOWN+RIGHT)
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self.play(LaggedStart(
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FadeIn, rewards,
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run_time = 4,
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lag_ratio = 0.5
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))
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self.play(FadeIn(footnote))
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self.dither(3)
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class ShowFirstFewBlocks(ExternallyAnimatedScene):
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pass
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class ShowGeometricSum(Scene):
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def construct(self):
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equation = TexMobject(
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"210{,}000", "(",
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"50", "+", "25", "+", "12.5", "+",
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"6.25", "+\\cdots", ")", "=", "21{,}000{,}000"
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)
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numbers = ["50", "25", "12.5", "6.25"]
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colors = color_gradient([BLUE_D, BLUE_B], 4)
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for tex, color in zip(numbers, colors):
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equation.highlight_by_tex(tex, color)
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equation[-1].highlight(YELLOW)
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self.add(*equation[:2] + equation[-3:-1])
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for i in range(2, 9, 2):
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self.play(FadeIn(VGroup(*equation[i:i+2])))
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self.dither()
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self.play(Write(equation[-1]))
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self.dither(2)
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class TransactionFeeExample(PiCreatureScene):
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def construct(self):
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alice = self.pi_creature
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payment = TextMobject(
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"Alice", "pays", "Bob", "0.42 BTC",
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)
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payment.highlight_by_tex("Alice", BLUE_C)
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payment.highlight_by_tex("Bob", MAROON)
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payment.highlight_by_tex("BTC", YELLOW)
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payment.move_to(2.5*UP)
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fee = TextMobject("And leaves", "0.001 BTC", "to the miner")
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fee.highlight_by_tex("BTC", YELLOW)
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fee.next_to(payment, DOWN)
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signature = TextMobject(
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"$\\langle$Alice's digital signature$\\rangle$"
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)
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signature.highlight(BLUE_C)
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signature.next_to(fee, DOWN)
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group = VGroup(payment, fee, signature)
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rect = SurroundingRectangle(group, color = BLUE_B)
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incentive_words = TextMobject(
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"Incentivizes miner \\\\ to include"
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)
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incentive_words.next_to(rect, DOWN, buff = 1.5)
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incentive_words.shift(2*RIGHT)
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arrow = Arrow(
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incentive_words.get_top(),
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rect.get_bottom(),
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buff = MED_LARGE_BUFF
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)
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fee.save_state()
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fee.shift(DOWN)
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fee.set_fill(opacity = 0)
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self.play(Write(payment))
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self.dither()
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self.play(
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alice.change, "raise_right_hand", payment,
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fee.restore,
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)
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self.play(Write(signature))
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self.play(
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ShowCreation(rect),
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alice.change_mode, "happy"
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)
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self.dither()
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self.play(
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Write(incentive_words),
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ShowCreation(arrow),
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alice.change, "pondering"
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)
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self.dither(2)
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def create_pi_creature(self):
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alice = PiCreature(color = BLUE_C)
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alice.to_edge(DOWN)
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alice.shift(SPACE_WIDTH*LEFT/2)
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return alice
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class ShowBitcoinBlockSize(LedgerScene):
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CONFIG = {
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"denomination" : "BTC"
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}
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def construct(self):
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block = VGroup()
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ledger = self.get_ledger()
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payments = VGroup(*[
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self.add_payment_line_to_ledger(*args)
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for args in [
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("Alice", "Bob", "0.42"),
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("You", "Charlie", "3.14"),
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("Bob", "You", "2.72"),
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("Alice", "Charlie", "4.67"),
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]
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])
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dots = TexMobject("\\vdots")
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dots.next_to(payments, DOWN)
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payments.add(dots)
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payments.to_edge(LEFT)
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payments.shift(DOWN+0.5*RIGHT)
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payments_rect = SurroundingRectangle(
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payments, color = WHITE, buff = MED_LARGE_BUFF
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)
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block.add(payments_rect, payments)
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tuples = [
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("Prev hash", UP, BLUE_C),
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("Proof of work", DOWN, GREEN),
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]
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for word, vect, color in tuples:
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mob = TextMobject(word)
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mob.highlight(color)
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rect = SurroundingRectangle(
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mob, color = WHITE, buff = MED_SMALL_BUFF
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)
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VGroup(mob, rect).next_to(payments_rect, vect, 0)
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rect.stretch_to_fit_width(payments_rect.get_width())
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block.add(mob, rect)
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title = VGroup(
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BitcoinLogo(height = 0.75),
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TextMobject("Block").scale(1.5)
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)
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title.arrange_submobjects(RIGHT, SMALL_BUFF)
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title.next_to(block, UP)
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brace = Brace(payments_rect, RIGHT)
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limit = brace.get_text(
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"Limited to\\\\",
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"$\\sim 2{,}400$", "transactions"
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)
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limit.highlight_by_tex("2{,}400", RED)
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self.add(title, block)
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self.remove(payments)
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self.play(
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GrowFromCenter(brace),
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Write(limit)
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)
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self.play(LaggedStart(FadeIn, payments))
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self.dither()
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####Visa
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visa_logo = SVGMobject(
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file_name = "visa_logo",
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height = 0.5,
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stroke_width = 0,
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fill_color = BLUE_D,
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fill_opacity = 1,
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)
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visa_logo[-1].highlight("#faa61a")
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visa_logo.sort_submobjects()
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avg_rate = TextMobject("Avg: $1{,}700$/second")
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max_rate = TextMobject("Max: $>24{,}000$/second")
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rates = VGroup(avg_rate, max_rate)
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rates.scale(0.8)
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rates.arrange_submobjects(DOWN, aligned_edge = LEFT)
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rates.next_to(visa_logo, RIGHT, buff = MED_SMALL_BUFF)
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visa = VGroup(visa_logo, rates)
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visa.to_corner(UP+RIGHT)
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self.play(LaggedStart(DrawBorderThenFill, visa_logo))
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self.play(LaggedStart(FadeIn, avg_rate))
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self.dither()
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self.play(LaggedStart(FadeIn, max_rate))
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self.dither(2)
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class CurrentAverageFees(Scene):
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def construct(self):
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fees = TextMobject(
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"Current average fees: ",
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"$\\sim 0.0013$ BTC",
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"$\\approx$", "\\$3.39"
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)
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fees.highlight_by_tex("BTC", YELLOW)
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fees.highlight_by_tex("\\$", GREEN)
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fees.to_edge(UP)
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self.play(Write(fees))
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self.dither()
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class HighlightingAFewFees(ExternallyAnimatedScene):
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pass
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class TopicsNotCovered(TeacherStudentsScene):
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def construct(self):
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title = TextMobject("Topics not covered:")
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title.to_corner(UP+LEFT)
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title.highlight(YELLOW)
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title.save_state()
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title.shift(DOWN)
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title.set_fill(opacity = 0)
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topics = VGroup(*map(TextMobject, [
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"Merkle trees",
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"Alternatives to proof of work",
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"Scripting",
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"$\\vdots$",
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||||
"(See links in description)",
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||||
]))
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topics.arrange_submobjects(DOWN, aligned_edge = LEFT)
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topics[-2].next_to(topics[-3], DOWN)
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topics.next_to(title, RIGHT)
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topics.to_edge(UP)
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self.play(
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title.restore,
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self.teacher.change_mode, "raise_right_hand"
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)
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for topic in topics:
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self.change_student_modes(
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"confused", "thinking","pondering",
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look_at_arg = topic,
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added_anims = [LaggedStart(FadeIn, topic)]
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||||
)
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self.dither()
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||||
class Exchange(Animation):
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||||
CONFIG = {
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"rate_func" : None,
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}
|
||||
def __init__(self, exchange, **kwargs):
|
||||
self.swap = Swap(
|
||||
exchange.left,
|
||||
exchange.right,
|
||||
)
|
||||
self.changed_symbols_yet = False
|
||||
Animation.__init__(self, exchange, **kwargs)
|
||||
|
||||
def update_mobject(self, alpha):
|
||||
exchange = self.mobject
|
||||
if alpha < 1./3:
|
||||
self.swap.update(3*alpha)
|
||||
elif alpha < 2./3:
|
||||
sub_alpha = alpha*3 - 1
|
||||
group = VGroup(exchange.left, exchange.right)
|
||||
group.set_fill(opacity = 1-smooth(sub_alpha))
|
||||
else:
|
||||
if not self.changed_symbols_yet:
|
||||
new_left = random.choice(
|
||||
exchange.cryptocurrencies
|
||||
).copy()
|
||||
new_left.move_to(exchange.right)
|
||||
new_right = random.choice(
|
||||
exchange.currencies
|
||||
).copy()
|
||||
new_right.move_to(exchange.left)
|
||||
Transform(exchange.left, new_left).update(1)
|
||||
Transform(exchange.right, new_right).update(1)
|
||||
self.changed_symbols_yet = True
|
||||
sub_alpha = 3*alpha - 2
|
||||
group = VGroup(exchange.left, exchange.right)
|
||||
group.set_fill(opacity = smooth(sub_alpha))
|
||||
|
||||
class ShowManyExchanges(Scene):
|
||||
CONFIG = {
|
||||
"n_rows" : 2,
|
||||
"n_cols" : 8,
|
||||
"shift_radius" : 0.5,
|
||||
"run_time" : 30,
|
||||
}
|
||||
def construct(self):
|
||||
cryptocurrencies = [
|
||||
BitcoinLogo(),
|
||||
BitcoinLogo(),
|
||||
BitcoinLogo(),
|
||||
EthereumLogo(),
|
||||
LitecoinLogo()
|
||||
]
|
||||
currencies = [
|
||||
TexMobject("\\$").highlight(GREEN),
|
||||
TexMobject("\\$").highlight(GREEN),
|
||||
TexMobject("\\$").highlight(GREEN),
|
||||
SVGMobject(
|
||||
file_name = "euro_symbol",
|
||||
stroke_width = 0,
|
||||
fill_opacity = 1,
|
||||
fill_color = BLUE,
|
||||
),
|
||||
SVGMobject(
|
||||
file_name = "yen_symbol",
|
||||
stroke_width = 0,
|
||||
fill_opacity = 1,
|
||||
fill_color = RED,
|
||||
)
|
||||
]
|
||||
for currency in it.chain(currencies, cryptocurrencies):
|
||||
currency.scale_to_fit_height(0.5)
|
||||
currency.align_data(EthereumLogo())
|
||||
exchange = VGroup(*[
|
||||
Arrow(
|
||||
p1, p2,
|
||||
path_arc = np.pi,
|
||||
buff = MED_LARGE_BUFF
|
||||
)
|
||||
for p1, p2 in (LEFT, RIGHT), (RIGHT, LEFT)
|
||||
]).highlight(WHITE)
|
||||
exchanges = VGroup(*[
|
||||
VGroup(*[
|
||||
exchange.copy()
|
||||
for x in range(3)
|
||||
]).arrange_submobjects(RIGHT, buff = 2*LARGE_BUFF)
|
||||
for y in range(3)
|
||||
]).arrange_submobjects(DOWN, buff = MED_LARGE_BUFF)
|
||||
exchanges = VGroup(*it.chain(*exchanges))
|
||||
self.add(exchanges)
|
||||
start_times = list(np.linspace(0, 2, len(exchanges)))
|
||||
random.shuffle(start_times)
|
||||
for exchange, start_time in zip(exchanges, start_times):
|
||||
left = random.choice(cryptocurrencies).copy()
|
||||
right = random.choice(currencies).copy()
|
||||
left.move_to(exchange.get_left())
|
||||
right.move_to(exchange.get_right())
|
||||
|
||||
exchange.left = left
|
||||
exchange.right = right
|
||||
exchange.start_time = start_time
|
||||
exchange.add(left, right)
|
||||
exchange.currencies = currencies
|
||||
exchange.cryptocurrencies = cryptocurrencies
|
||||
exchange.animation = Exchange(exchange)
|
||||
|
||||
times = np.arange(0, self.run_time, self.frame_duration)
|
||||
from scene.scene import ProgressDisplay
|
||||
for t in ProgressDisplay(times):
|
||||
for exchange in exchanges:
|
||||
sub_t = t - exchange.start_time
|
||||
if sub_t < 0:
|
||||
continue
|
||||
elif sub_t > 3:
|
||||
exchange.start_time = t
|
||||
sub_t = 0
|
||||
exchange.animation = Exchange(exchange)
|
||||
exchange.animation.update(sub_t/3.0)
|
||||
self.update_frame(
|
||||
self.extract_mobject_family_members(exchanges)
|
||||
)
|
||||
self.add_frames(self.get_frame())
|
||||
|
||||
class CryptoPatreonThanks(PatreonThanks):
|
||||
CONFIG = {
|
||||
"specific_patrons" : [
|
||||
"Ali Yahya",
|
||||
"Desmos",
|
||||
"Burt Humburg",
|
||||
"CrypticSwarm",
|
||||
"Juan Benet",
|
||||
"Samantha D. Suplee",
|
||||
"James Park",
|
||||
"Erik Sundell",
|
||||
"Yana Chernobilsky",
|
||||
"Kaustuv DeBiswas",
|
||||
"Kathryn Schmiedicke",
|
||||
"Karan Bhargava",
|
||||
"Yu Jun",
|
||||
"Dave Nicponski",
|
||||
"Damion Kistler",
|
||||
"Markus Persson",
|
||||
"Yoni Nazarathy",
|
||||
"Ed Kellett",
|
||||
"Joseph John Cox",
|
||||
"Dan Buchoff",
|
||||
"Luc Ritchie",
|
||||
"Andrew Busey",
|
||||
"Michael McGuffin",
|
||||
"John Haley",
|
||||
"Mourits de Beer",
|
||||
"Ankalagon",
|
||||
"Eric Lavault",
|
||||
"Tomohiro Furusawa",
|
||||
"Boris Veselinovich",
|
||||
"Julian Pulgarin",
|
||||
"Jeff Linse",
|
||||
"Cooper Jones",
|
||||
"Ryan Dahl",
|
||||
"Mark Govea",
|
||||
"Robert Teed",
|
||||
"Jason Hise",
|
||||
"Meshal Alshammari",
|
||||
"Bernd Sing",
|
||||
"Nils Schneider",
|
||||
"James Thornton",
|
||||
"Mustafa Mahdi",
|
||||
"Mathew Bramson",
|
||||
"Jerry Ling",
|
||||
"Vecht",
|
||||
"Shimin Kuang",
|
||||
"Rish Kundalia",
|
||||
"Achille Brighton",
|
||||
"Ripta Pasay",
|
||||
]
|
||||
}
|
||||
|
||||
|
||||
|
||||
|
||||
@ -92,7 +92,7 @@ class PatreonThanks(Scene):
|
||||
"Felipe Diniz",
|
||||
],
|
||||
"max_patron_group_size" : 20,
|
||||
"patron_scale_val" : 0.7,
|
||||
"patron_scale_val" : 0.8,
|
||||
|
||||
}
|
||||
def construct(self):
|
||||
|
||||
Reference in New Issue
Block a user