banner.py

from __future__ import annotations

from manimlib.constants import *
from manimlib.mobject.coordinate_systems import NumberPlane
from manimlib.mobject.svg.tex_mobject import TexText
from manimlib.mobject.svg.text_mobject import Text
from manimlib.mobject.types.vectorized_mobject import VGroup
from manimlib.mobject.frame import FullScreenFadeRectangle
from manimlib.scene.scene import Scene

from custom.characters.pi_creature import Mortimer
from custom.characters.pi_creature import Randolph

from typing import TYPE_CHECKING
if TYPE_CHECKING:
    from manimlib.typing import Vect3


class Banner(Scene):
    camera_config = dict(pixel_height=1440, pixel_width=2560)
    pi_height = 1.25
    pi_bottom = 0.25 * DOWN
    use_date = False
    message = "Animated Math"
    date = "Sunday, February 3rd"
    message_height = 0.4
    add_supporter_note = False
    pre_date_text = "Next video on "

    def construct(self):
        # Background
        self.add(FullScreenFadeRectangle().set_fill(BLACK, 1))
        plane = NumberPlane(
            (-7, 7), (-5, 5),
            height=10 * 1.5,
            width=14 * 1.5,
            axis_config=dict(stroke_color=BLUE_A),
            faded_line_style=dict(
                stroke_width=0.5,
                stroke_opacity=0.35,
                stroke_color=BLUE,
            ),
            faded_line_ratio=4,
        )
        for line in plane.family_members_with_points():
            line.set_stroke(width=line.get_stroke_width() / 2)
        self.add(
            plane,
            # FullScreenFadeRectangle().set_fill(BLACK, 0.25),
        )

        # Pis
        pis = self.get_pis()
        pis.set_height(self.pi_height)
        pis.arrange(RIGHT, aligned_edge=DOWN)
        pis.move_to(self.pi_bottom, DOWN)
        self.pis = pis
        self.add(pis)

        plane.move_to(pis.get_bottom() + SMALL_BUFF * DOWN)

        # Message
        message = self.get_message()
        message.set_height(self.message_height)
        message.next_to(pis, DOWN)
        message.set_stroke(BLACK, 10, background=True)
        self.add(message)

        # Suppoerter note
        if self.add_supporter_note:
            note = self.get_supporter_note()
            note.scale(0.5)
            message.shift((MED_SMALL_BUFF - SMALL_BUFF) * UP)
            note.next_to(message, DOWN, SMALL_BUFF)
            self.add(note)

        yellow_parts = [sm for sm in message if sm.get_color() == YELLOW]
        for pi in pis:
            if yellow_parts:
                pi.look_at(yellow_parts[-1])
            else:
                pi.look_at(message)

    def get_pis(self):
        return VGroup(
            Randolph(color=BLUE_E, mode="pondering"),
            Randolph(color=BLUE_D, mode="hooray"),
            Randolph(color=BLUE_C, mode="tease"),
            Mortimer(color=GREY_BROWN, mode="thinking")
        )

    def get_message(self):
        if self.message:
            return Text(self.message)
        if self.use_date:
            return self.get_date_message()
        else:
            return self.get_probabalistic_message()

    def get_probabalistic_message(self):
        return Text(
            "New video every day " + \
            "(with probability 0.05)",
            t2c={"Sunday": YELLOW},
        )

    def get_date_message(self):
        return Text(
            self.pre_date_text,
            self.date,
            t2c={self.date: YELLOW},
        )

    def get_supporter_note(self):
        return OldTexText(
            "(Available to supporters for review now)",
            color="#F96854",
        )


class CurrBanner(Banner):
    camera_config: dict = {
        "pixel_height": 1440,
        "pixel_width": 2560,
    }
    pi_height: float = 1.25
    pi_bottom: Vect3 = 0.25 * DOWN
    use_date: bool = False
    date: str = "Wednesday, March 15th"
    message_scale_val: float = 0.9
    add_supporter_note: bool = False
    pre_date_text: str = "Next video on "

    def construct(self):
        super().construct()
        for pi in self.pis:
            pi.set_gloss(0.1)