62 lines
1.7 KiB
Python
62 lines
1.7 KiB
Python
from manim import *
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import manim
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class Graphing(Scene):
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def construct(self):
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# 使用Axes替代NumberPlane以获得图形功能
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axes = Axes(
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x_range=[-6, 6],
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y_range=[-10, 10],
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axis_config={"color": BLUE},
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x_length=12,
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y_length=6
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).add_coordinates()
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axes.shift(RIGHT * 3)
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# 修正1：使用plot方法替代get_graph
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my_function = axes.plot(
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lambda x: 0.1 * (x - 5) * x * (x + 5),
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x_range=[-6, 6],
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color=GREEN_B
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)
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# 修正2：使用正确的面积计算方法
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area = axes.get_area(
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my_function,
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x_range=[-5, 5],
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color=[BLUE, YELLOW],
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opacity=0.4
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)
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label = MathTex("f(x)=0.1x(x-5)(x+5)").next_to(axes, UP, buff=0.2)
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# 修正3：使用axes代替my_plane，通过函数直接计算y值
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x_val = -2
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y_val = 0.1 * (x_val - 5) * x_val * (x_val + 5)
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horiz_line = Line(
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start=axes.c2p(0, y_val),
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end=axes.c2p(x_val, y_val),
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stroke_color=YELLOW,
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stroke_width=10
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)
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# 更新动画顺序
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self.play(Create(axes), run_time=2)
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self.play(Create(my_function), Write(label))
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self.play(FadeIn(area))
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self.play(Create(horiz_line))
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self.wait()
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if __name__ == '__main__':
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config = {
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"quality": "low_quality",
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"preview": True,
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"media_dir": "./custom_output"
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}
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with manim.tempconfig(config):
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scene = Graphing()
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scene.render() |