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https://github.com/3b1b/manim.git
synced 2025-08-19 13:01:00 +00:00
Grant Sanderson
GitHub
commit
47f16986d7
7 changed files with 2042 additions and 10 deletions
1833
active_projects/dandelin.py
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1833
active_projects/dandelin.py
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@ -158,6 +158,12 @@ class FadeInAndShiftFromDirection(Transform):
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Transform.__init__(self, mobject, target, **kwargs)
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class FadeInFrom(FadeInAndShiftFromDirection):
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"""
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Alternate name for FadeInAndShiftFromDirection
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"""
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class FadeInFromDown(FadeInAndShiftFromDirection):
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"""
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Essential a more convenient form of FadeInAndShiftFromDirection
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16
constants.py
16
constants.py
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@ -35,18 +35,19 @@ with open("media_dir.txt", 'w') as media_file:
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media_file.write(MEDIA_DIR)
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#
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DEFAULT_PIXEL_HEIGHT = 1080
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DEFAULT_PIXEL_WIDTH = 1920
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LOW_QUALITY_FRAME_DURATION = 1. / 15
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MEDIUM_QUALITY_FRAME_DURATION = 1. / 30
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PRODUCTION_QUALITY_FRAME_DURATION = 1. / 60
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# There might be other configuration than pixel shape later...
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PRODUCTION_QUALITY_CAMERA_CONFIG = {
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"pixel_height": DEFAULT_PIXEL_HEIGHT,
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"pixel_width": DEFAULT_PIXEL_WIDTH,
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"pixel_height": 1440,
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"pixel_width": 2560,
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}
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HIGH_QUALITY_CAMERA_CONFIG = {
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"pixel_height": 1080,
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"pixel_width": 1920,
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}
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MEDIUM_QUALITY_CAMERA_CONFIG = {
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@ -59,6 +60,9 @@ LOW_QUALITY_CAMERA_CONFIG = {
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"pixel_width": 854,
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}
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DEFAULT_PIXEL_HEIGHT = PRODUCTION_QUALITY_CAMERA_CONFIG["pixel_height"]
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DEFAULT_PIXEL_WIDTH = PRODUCTION_QUALITY_CAMERA_CONFIG["pixel_width"]
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DEFAULT_POINT_DENSITY_2D = 25
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DEFAULT_POINT_DENSITY_1D = 250
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@ -14,13 +14,16 @@ from animation.creation import FadeOut
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from mobject.svg.tex_mobject import TextMobject
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from mobject.types.vectorized_mobject import VGroup
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from scene.scene import Scene
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from scene.moving_camera_scene import MovingCameraScene
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from for_3b1b_videos.pi_creature_animations import Blink
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from for_3b1b_videos.pi_creature import Mortimer
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from for_3b1b_videos.pi_creature import Randolph
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from mobject.geometry import Line
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from mobject.geometry import DashedLine
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from mobject.geometry import Rectangle
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from mobject.geometry import Square
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from mobject.svg.drawings import PatreonLogo
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from mobject.svg.drawings import Logo
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class OpeningQuote(Scene):
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@ -189,14 +192,23 @@ class PatreonEndScreen(PatreonThanks):
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fill_opacity=1,
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stroke_width=0,
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width=FRAME_WIDTH,
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height=1.1 * FRAME_Y_RADIUS
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height=0.6 * FRAME_HEIGHT,
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)
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black_rect.to_edge(UP, buff=0)
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line = DashedLine(FRAME_X_RADIUS * LEFT, FRAME_X_RADIUS * RIGHT)
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line.move_to(black_rect, DOWN)
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line.shift(SMALL_BUFF * SMALL_BUFF * DOWN)
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line.move_to(ORIGIN)
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self.add(line)
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thanks = TextMobject("Funded by the community, with special thanks to:")
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thanks.scale(0.9)
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thanks.next_to(black_rect.get_bottom(), UP, SMALL_BUFF)
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thanks.set_color(YELLOW)
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underline = Line(LEFT, RIGHT)
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underline.scale_to_fit_width(thanks.get_width() + MED_SMALL_BUFF)
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underline.next_to(thanks, DOWN, SMALL_BUFF)
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thanks.add(underline)
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self.add(thanks)
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patrons = VGroup(*map(TextMobject, self.specific_patrons))
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patrons.scale(self.patron_scale_val)
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for patron in patrons:
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@ -217,15 +229,43 @@ class PatreonEndScreen(PatreonThanks):
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columns.next_to(black_rect, DOWN, 3 * LARGE_BUFF)
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columns.to_edge(RIGHT)
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thanks.align_to(columns, alignment_vect=RIGHT)
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self.play(
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columns.move_to, 2 * DOWN, DOWN,
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columns.to_edge, RIGHT,
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Animation(black_rect),
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Animation(line),
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Animation(thanks),
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rate_func=None,
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run_time=self.run_time,
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)
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class LogoGenerationTemplate(MovingCameraScene):
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def setup(self):
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frame = self.camera_frame
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frame.shift(DOWN)
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self.logo = Logo()
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name = TextMobject("3Blue1Brown")
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name.scale(2.5)
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name.next_to(logo, DOWN, buff=MED_LARGE_BUFF)
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self.name = name
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def construct(self):
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logo = self.logo
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name = self.name
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self.play(
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Write(name, run_time=3, lag_factor=2.5),
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*self.get_logo_animations(logo)
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)
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self.wait()
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def get_logo_animations(self, logo):
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return [] # For subclasses
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class ExternallyAnimatedScene(Scene):
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def construct(self):
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raise Exception("Don't actually run this class.")
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@ -1,4 +1,5 @@
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from __future__ import absolute_import
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import itertools as it
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from constants import *
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@ -19,11 +20,13 @@ from mobject.geometry import Line
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from mobject.geometry import Polygon
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from mobject.geometry import Rectangle
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from mobject.geometry import Square
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from mobject.geometry import AnnularSector
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from mobject.three_dimensions import Cube
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from utils.config_ops import digest_config
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from utils.space_ops import angle_of_vector
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from utils.space_ops import complex_to_R3
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from utils.space_ops import rotate_vector
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from utils.bezier import interpolate
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class Lightbulb(SVGMobject):
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@ -630,7 +633,151 @@ class VectorizedEarth(SVGMobject):
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self.add_to_back(circle)
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### Cards ###
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class Logo(VMobject):
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CONFIG = {
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"pupil_radius": 1.0,
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"outer_radius": 2.0,
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"iris_background_blue": "#74C0E3",
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"iris_background_brown": "#8C6239",
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"blue_spike_colors": [
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"#528EA3",
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"#3E6576",
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"#224C5B",
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BLACK,
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],
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"brown_spike_colors": [
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"#754C24",
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"#603813",
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"#42210b",
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BLACK,
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],
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"n_spike_layers": 4,
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"n_spikes": 28,
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"spike_angle": TAU / 28,
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}
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def __init__(self, **kwargs):
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VMobject.__init__(self, **kwargs)
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self.add_iris_back()
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self.add_spikes()
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self.add_pupil()
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def add_iris_back(self):
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blue_iris_back = AnnularSector(
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inner_radius=self.pupil_radius,
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outer_radius=self.outer_radius,
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angle=270 * DEGREES,
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start_angle=180 * DEGREES,
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fill_color=self.iris_background_blue,
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fill_opacity=1,
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stroke_width=0,
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)
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brown_iris_back = AnnularSector(
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inner_radius=self.pupil_radius,
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outer_radius=self.outer_radius,
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angle=90 * DEGREES,
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start_angle=90 * DEGREES,
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fill_color=self.iris_background_brown,
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fill_opacity=1,
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stroke_width=0,
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)
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self.iris_background = VGroup(
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blue_iris_back,
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brown_iris_back,
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)
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self.add(self.iris_background)
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def add_spikes(self):
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layers = VGroup()
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radii = np.linspace(
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self.outer_radius,
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self.pupil_radius,
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self.n_spike_layers,
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endpoint=False,
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)
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radii[:2] = radii[1::-1] # Swap first two
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radii[-1] = interpolate(
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radii[-1], self.pupil_radius, 0.25
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)
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for radius in radii:
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tip_angle = self.spike_angle
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half_base = radius * np.tan(tip_angle)
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triangle, right_half_triangle = [
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Polygon(
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radius * UP,
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half_base * RIGHT,
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vertex3,
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fill_opacity=1,
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stroke_width=0,
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)
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for vertex3 in half_base * LEFT, ORIGIN,
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]
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left_half_triangle = right_half_triangle.copy()
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left_half_triangle.flip(UP, about_point=ORIGIN)
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n_spikes = self.n_spikes
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full_spikes = [
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triangle.copy().rotate(
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-angle,
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about_point=ORIGIN
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)
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for angle in np.linspace(
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0, TAU, n_spikes, endpoint=False
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)
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]
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index = 3 * n_spikes / 4
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if radius == radii[0]:
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layer = VGroup(*full_spikes)
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layer.rotate(
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-TAU / n_spikes / 2,
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about_point=ORIGIN
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)
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layer.brown_index = index
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else:
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half_spikes = [
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right_half_triangle.copy(),
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left_half_triangle.copy().rotate(
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90 * DEGREES, about_point=ORIGIN,
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),
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right_half_triangle.copy().rotate(
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90 * DEGREES, about_point=ORIGIN,
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),
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left_half_triangle.copy()
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]
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layer = VGroup(*it.chain(
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half_spikes[:1],
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full_spikes[1:index],
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half_spikes[1:3],
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full_spikes[index + 1:],
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half_spikes[3:],
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))
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layer.brown_index = index + 1
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layers.add(layer)
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# Color spikes
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blues = self.blue_spike_colors
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browns = self.brown_spike_colors
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for layer, blue, brown in zip(layers, blues, browns):
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index = layer.brown_index
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layer[:index].set_color(blue)
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layer[index:].set_color(brown)
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self.spike_layers = layers
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self.add(layers)
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def add_pupil(self):
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self.pupil = Circle(
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radius=self.pupil_radius,
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fill_color=BLACK,
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fill_opacity=1,
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stroke_width=0,
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)
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self.add(self.pupil)
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# Cards
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class DeckOfCards(VGroup):
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@ -11,6 +11,7 @@
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\usepackage{mathrsfs}
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\usepackage{calligra}
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\usepackage{wasysym}
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\usepackage{textcomp}
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%\usepackage[UTF8]{ctex}
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\begin{document}
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@ -15,6 +15,7 @@
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\usepackage{ragged2e}
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\usepackage{physics}
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\usepackage{xcolor}
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\usepackage{textcomp}
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%\usepackage[UTF8]{ctex}
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\linespread{1}
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