图与网络¶

Graph / DiGraph 把 networkx 的图论能力与 Manim 的动画系统结合起来：顶点、边都是普通 mobject，可以用任意动画逐个创建、移动、重连，非常适合讲解数据结构、状态机与网络拓扑。

Graph¶

class manim.Graph(vertices: Sequence[Hashable], edges: Sequence[tuple[Hashable, Hashable]], labels: bool | dict = False, label_fill_color: str = ManimColor('#000000'), layout: LayoutName | dict[Hashable, Point3DLike] | LayoutFunction = 'spring', layout_scale: float | tuple[float, float, float] = 2, layout_config: dict | None = None, vertex_type: type[Mobject] = <class 'manim.mobject.geometry.arc.Dot'>, vertex_config: dict | None = None, vertex_mobjects: dict | None = None, edge_type: type[Mobject] = <class 'manim.mobject.geometry.line.Line'>, partitions: Sequence[Sequence[Hashable]] | None = None, root_vertex: Hashable | None = None, edge_config: dict | None = None): 基类：GenericGraph

Graph 构造三个要素：顶点序列、边序列（顶点对的列表）和布局。布局可以是名字（"circular" / "spring" / "kamada_kawai" / "planar" 等，由 networkx 计算）、坐标字典或自定义函数；vertex_config / edge_config 控制样式，labels=True 自动给顶点加标签。

name	type	default	desc
`vertices`	Sequence[Hashable]	—	顶点集合（任意可哈希值）
`edges`	Sequence[tuple]	—	顶点对列表
`layout`	str \| dict \| callable	`spring`	布局名 / 坐标字典 / 布局函数
`labels`	bool \| dict	False	顶点标签；True 时自动编号
`vertex_config` / `edge_config`	dict \| None	None	顶点 / 边样式
`partitions` + `root_vertex`	—	None	分层布局的分区与根

Graph``（左）与 ``DiGraph``（右）使用同一组顶点和边；``labels=True 显示顶点编号。

查看源码 graph_network.py

from manim import *


class GraphDemo(Scene):
    def construct(self):
        vertices = [1, 2, 3, 4, 5]
        edges = [(1, 2), (2, 3), (3, 4), (4, 1), (2, 4), (1, 3)]
        g = Graph(vertices, edges, layout="circular", labels=True)
        self.play(Create(g), run_time=2)
        dg = DiGraph(vertices, edges, layout="circular", labels=True)
        dg.shift(RIGHT * 4.5)
        self.play(g.animate.shift(LEFT * 2.5), FadeIn(dg, shift=RIGHT), run_time=1.5)
        self.wait()

DiGraph¶

class manim.DiGraph(vertices: Sequence[Hashable], edges: Sequence[tuple[Hashable, Hashable]], labels: bool | dict = False, label_fill_color: str = ManimColor('#000000'), layout: LayoutName | dict[Hashable, Point3DLike] | LayoutFunction = 'spring', layout_scale: float | tuple[float, float, float] = 2, layout_config: dict | None = None, vertex_type: type[Mobject] = <class 'manim.mobject.geometry.arc.Dot'>, vertex_config: dict | None = None, vertex_mobjects: dict | None = None, edge_type: type[Mobject] = <class 'manim.mobject.geometry.line.Line'>, partitions: Sequence[Sequence[Hashable]] | None = None, root_vertex: Hashable | None = None, edge_config: dict | None = None): 基类：GenericGraph

DiGraph 是有向图：构造参数与 Graph 完全一致，区别在于每条边会自动加上箭头（可用 edge_config 里的 tip_config 调整箭头样式）。表示状态转移、依赖关系、流程图时用它。

提示

图建好之后的动态修改（加顶点、换布局、改样式）直接对 Graph 对象调用相应方法后用 self.play 播放即可，官方文档的 MovingDiGraph 示例演示了移动顶点的标准写法。