MathLens/script_example.py at main · wecake/MathLens · GitHub

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from manim import *
import math

class MathScene(Scene):
    def construct(self):
        # ======================
        # 播放音频 1
        # ======================
        self.add_sound("audio/audio_001.wav")

        # 画三角形
        A = np.array([-2, 1, 0])
        B = np.array([-3, -1, 0])
        C = np.array([-1, -1, 0])
        triangle = Polygon(A, B, C, color=BLUE)
        self.play(Create(triangle), run_time=2)

        # 标注 ABC
        label_A = Text("A", font_size=24).next_to(A, UP)
        label_B = Text("B", font_size=24).next_to(B, DL)
        label_C = Text("C", font_size=24).next_to(C, DR)
        self.play(Write(label_A), Write(label_B), Write(label_C))
        self.wait(1)

        # ======================
        # 播放音频 2
        # ======================
        self.add_sound("audio/audio_002.wav")

        # 画角度
        angle_A = Sector(
            radius=0.8,
            angle=math.radians(70),
            start_angle=math.radians(125),
            color=YELLOW
        )
        self.play(Create(angle_A), run_time=1)
        angle_label = Text("70°", font_size=20).move_to(angle_A.get_center() + UP*0.2)
        self.play(Write(angle_label))
        self.wait(1)

        # ======================
        # 播放音频 3
        # ======================
        self.add_sound("audio/audio_003.wav")

        conclusion = Text(
            "等腰三角形顶角70°，底角各55°",
            font_size=28,
            color=GREEN
        ).to_edge(DOWN)
        self.play(FadeIn(conclusion))
        self.wait(2)