def get_det_text( matrix: Matrix, determinant: int | str | None = None, background_rect: bool = False, initial_scale_factor: int = 2 ) -> VGroup: parens = Tex("(", ")") parens.scale(initial_scale_factor) parens.stretch_to_fit_height(matrix.get_height()) l_paren, r_paren = parens.split() l_paren.next_to(matrix, LEFT, buff=0.1) r_paren.next_to(matrix, RIGHT, buff=0.1) det = TexText("det") det.scale(initial_scale_factor) det.next_to(l_paren, LEFT, buff=0.1) if background_rect: det.add_background_rectangle() det_text = VGroup(det, l_paren, r_paren) if determinant is not None: eq = Tex("=") eq.next_to(r_paren, RIGHT, buff=0.1) result = Tex(str(determinant)) result.next_to(eq, RIGHT, buff=0.2) det_text.add(eq, result) return det_text
def setup(self): super().setup() frame = self.camera.frame frame.shift(DOWN) self.logo = Logo() name = TexText("3Blue1Brown") name.scale(2.5) name.next_to(self.logo, DOWN, buff=MED_LARGE_BUFF) name.set_gloss(0.2) self.channel_name = name
def construct(self): words = TexText( "3", "Blue", "1", "Brown", ) words.scale(2) words[::2].scale(1.2) buff = 0.2 words.arrange( DOWN, buff=buff, aligned_edge=LEFT, ) words[0].match_x(words[1][0]) words[2].match_x(words[3][0]) self.add(words) logo = Logo() logo.next_to(words, LEFT) self.add(logo) VGroup(logo, words).center()
def construct(self): # Add title title = self.title = TexText("Clicky Stuffs") title.scale(1.5) title.to_edge(UP, buff=MED_SMALL_BUFF) pi_creatures = VGroup(Randolph(), Mortimer()) for pi, vect in zip(pi_creatures, [LEFT, RIGHT]): pi.set_height(title.get_height()) pi.change_mode("thinking") pi.look(DOWN) pi.next_to(title, vect, buff=MED_LARGE_BUFF) self.add(title, pi_creatures) # Set the top of the screen logo_box = Square(side_length=2.5) logo_box.to_corner(DOWN + LEFT, buff=MED_LARGE_BUFF) black_rect = Rectangle( fill_color=BLACK, fill_opacity=1, stroke_width=3, stroke_color=BLACK, width=FRAME_WIDTH, height=0.6 * FRAME_HEIGHT, ) black_rect.to_edge(UP, buff=0) line = DashedLine(FRAME_X_RADIUS * LEFT, FRAME_X_RADIUS * RIGHT) line.move_to(ORIGIN) # Add thanks thanks = TexText(self.thanks_words) thanks.scale(0.9) thanks.next_to(black_rect.get_bottom(), UP, SMALL_BUFF) thanks.set_color(YELLOW) underline = Line(LEFT, RIGHT) underline.match_width(thanks) underline.scale(1.1) underline.next_to(thanks, DOWN, SMALL_BUFF) thanks.add(underline) # Build name list file_name = os.path.join(get_directories()["data"], "patrons.txt") with open(file_name, "r") as fp: names = [ self.modify_patron_name(name.strip()) for name in fp.readlines() ] if self.randomize_order: random.shuffle(names) else: names.sort() name_labels = VGroup(*map(TexText, names)) name_labels.scale(self.patron_scale_val) for label in name_labels: if label.get_width() > self.max_patron_width: label.set_width(self.max_patron_width) columns = VGroup(*[ VGroup(*name_labels[i::self.n_patron_columns]) for i in range(self.n_patron_columns) ]) column_x_spacing = 0.5 + max([c.get_width() for c in columns]) for i, column in enumerate(columns): for n, name in enumerate(column): name.shift(n * self.name_y_spacing * DOWN) name.align_to(ORIGIN, LEFT) column.move_to(i * column_x_spacing * RIGHT, UL) columns.center() max_width = FRAME_WIDTH - 1 if columns.get_width() > max_width: columns.set_width(max_width) underline.match_width(columns) columns.next_to(underline, DOWN, buff=3) # Set movement columns.generate_target() distance = columns.get_height() + 2 wait_time = self.scroll_time frame = self.camera.frame frame_shift = ApplyMethod( frame.shift, distance * DOWN, run_time=wait_time, rate_func=linear, ) blink_anims = [] blank_mob = Mobject() for x in range(wait_time): if random.random() < 0.25: blink_anims.append(Blink(random.choice(pi_creatures))) else: blink_anims.append(Animation(blank_mob)) blinks = Succession(*blink_anims) static_group = VGroup(black_rect, line, thanks, pi_creatures, title) static_group.fix_in_frame() self.add(columns, static_group) self.play(frame_shift, blinks)