arc

class janim.items.geometry.arc.ArcCenter(*args, arc_center: Vect = array([0., 0., 0.]), **kwargs)

基类：VItem

与圆弧有关的类的基类，被 Arc 和 AnnularSector 所继承

get_arc_center() → ndarray

得到圆弧所对应的圆心

move_arc_center_to(point: Vect) → Self

将圆弧圆心移动到指定的位置

cmpt_init_datas = {'_arc_center': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.geometry.arc.ArcCenter'>), 'color': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.vitem.VItem'>), 'depth': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.item.Item'>), 'fill': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.vitem.VItem'>), 'glow': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.vitem.VItem'>), 'points': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.points.Points'>), 'radius': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.vitem.VItem'>), 'stroke': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.vitem.VItem'>)}

class janim.items.geometry.arc.Arc(start_angle: float = 0, angle: float = 1.5707963267948966, radius: float = 1.0, *, n_components: int = 8, arc_center: ndarray = array([0., 0., 0.]), **kwargs)

基类：ArcCenter

圆弧

• start_angle 表示起始的角度

• angle 表示圆心角

get_arc_length() → float

获取圆弧长度

get_start_angle() → float

获取起始角度

get_stop_angle() → float

获取终止角度

cmpt_init_datas = {'_arc_center': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.geometry.arc.ArcCenter'>), 'color': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.vitem.VItem'>), 'depth': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.item.Item'>), 'fill': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.vitem.VItem'>), 'glow': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.vitem.VItem'>), 'points': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.points.Points'>), 'radius': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.vitem.VItem'>), 'stroke': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.vitem.VItem'>)}

class janim.items.geometry.arc.ArcBetweenPoints(start: ndarray, end: ndarray, angle: float = 1.5707963267948966, **kwargs)

基类：Arc

两点之间的圆弧

• 传入 start, end 表示起点终点

• angle 表示圆心角

• 其余参数同 Arc

cmpt_init_datas = {'_arc_center': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.geometry.arc.ArcCenter'>), 'color': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.vitem.VItem'>), 'depth': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.item.Item'>), 'fill': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.vitem.VItem'>), 'glow': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.vitem.VItem'>), 'points': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.points.Points'>), 'radius': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.vitem.VItem'>), 'stroke': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.vitem.VItem'>)}

class janim.items.geometry.arc.Cmpt_VPoints_CircleImpl(*args, **kwargs)

基类：Cmpt_VPoints, Generic

在圆中，对 Cmpt_VPoints 的进一步实现

surround(item: Item, dim_to_match: int = 0, *, stretch: bool = False, buff: float = 0.25, root_only: bool = True, item_root_only: bool = False) → Self

与 replace 类似，但是会向外留出 buff 间距

property start_angle: float

获取起始角度

at_angle(angle: float) → ndarray

得到在指定角度处的点，例如 angle=0 得到右侧的点，angle=PI / 2 得到顶部的点

property radius: float

得到半径

class janim.items.geometry.arc.Circle(radius: float = 1.0, *, n_components: int = 8, **kwargs)

基类：VItem

圆

• 参数同 Arc

• 半径传入 radius 指定

points

cmpt_init_datas = {'color': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.vitem.VItem'>), 'depth': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.item.Item'>), 'fill': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.vitem.VItem'>), 'glow': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.vitem.VItem'>), 'points': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.points.Points'>), 'radius': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.vitem.VItem'>), 'stroke': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.vitem.VItem'>)}

class janim.items.geometry.arc.Dot(point: ndarray = array([0., 0., 0.]), radius: float = 0.08, *, stroke_alpha: Alpha | AlphaArray | None = 0, fill_alpha: Alpha | AlphaArray | None = 1.0, **kwargs)

基类：Circle

点，半径默认为 0.08

cmpt_init_datas = {'color': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.vitem.VItem'>), 'depth': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.item.Item'>), 'fill': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.vitem.VItem'>), 'glow': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.vitem.VItem'>), 'points': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.points.Points'>), 'radius': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.vitem.VItem'>), 'stroke': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.vitem.VItem'>)}

class janim.items.geometry.arc.SmallDot(point: ndarray = array([0., 0., 0.]), radius: float = 0.04, **kwargs)

基类：Dot

小点，半径默认为 0.04

cmpt_init_datas = {'color': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.vitem.VItem'>), 'depth': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.item.Item'>), 'fill': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.vitem.VItem'>), 'glow': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.vitem.VItem'>), 'points': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.points.Points'>), 'radius': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.vitem.VItem'>), 'stroke': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.vitem.VItem'>)}

class janim.items.geometry.arc.Ellipse(width: float = 2, height: float = 1, **kwargs)

基类：Circle

椭圆

cmpt_init_datas = {'color': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.vitem.VItem'>), 'depth': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.item.Item'>), 'fill': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.vitem.VItem'>), 'glow': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.vitem.VItem'>), 'points': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.points.Points'>), 'radius': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.vitem.VItem'>), 'stroke': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.vitem.VItem'>)}

class janim.items.geometry.arc.AnnularSector(inner_radius: float = 0.5, outer_radius: float = 1, start_angle: float = 0, angle: float = 1.5707963267948966, *, arc_center: ndarray = array([0., 0., 0.]), n_components: int = 8, **kwargs)

基类：ArcCenter

扇环

• inner_radius: 内圆半径

• outer_radius: 外圆半径

• start_angle: 起始角度

• angle: 圆心角

• arc_center: 圆弧的中心

cmpt_init_datas = {'_arc_center': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.geometry.arc.ArcCenter'>), 'color': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.vitem.VItem'>), 'depth': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.item.Item'>), 'fill': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.vitem.VItem'>), 'glow': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.vitem.VItem'>), 'points': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.points.Points'>), 'radius': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.vitem.VItem'>), 'stroke': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.vitem.VItem'>)}

class janim.items.geometry.arc.Sector(*, arc_center: ndarray = array([0., 0., 0.]), **kwargs)

基类：Arc

扇形

传入参数请参考 Arc

cmpt_init_datas = {'_arc_center': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.geometry.arc.ArcCenter'>), 'color': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.vitem.VItem'>), 'depth': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.item.Item'>), 'fill': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.vitem.VItem'>), 'glow': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.vitem.VItem'>), 'points': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.points.Points'>), 'radius': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.vitem.VItem'>), 'stroke': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.vitem.VItem'>)}

class janim.items.geometry.arc.Annulus(outer_radius: float = 1, inner_radius: float = 0.5, *, arc_center: ndarray = array([0., 0., 0.]), n_components: int = 8, fill_alpha: float = 0.5, **kwargs)

基类：VItem

圆环

• inner_radius: 内圆半径

• outer_radius: 外圆半径

• arc_center: 圆弧的中心

cmpt_init_datas = {'color': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.vitem.VItem'>), 'depth': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.item.Item'>), 'fill': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.vitem.VItem'>), 'glow': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.vitem.VItem'>), 'points': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.points.Points'>), 'radius': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.vitem.VItem'>), 'stroke': _ItemMeta._CmptInitData(info=<janim.components.component.CmptInfo object>, decl_cls=<class 'janim.items.vitem.VItem'>)}