line¶

class janim.items.geometry.line.Cmpt_VPoints_LineImpl(*args, **kwargs)¶

基类：Cmpt_VPoints, Generic

在线段中，对 Cmpt_VPoints 的进一步实现

copy() → Self¶

become(other: Cmpt_VPoints_LineImpl) → Self¶

not_changed(other) → bool¶

put_start_and_end_on(start: Vect, end: Vect) → Self¶: 通过旋转和缩放，使得物件的起点和终点被置于 start 和 end

update_points_by_attrs(start: ndarray | None = None, end: ndarray | None = None, buff: float | None = None, path_arc: float | None = None) → Self¶

set_buff(buff: float) → Self¶

set_path_arc(path_arc: float) → Self¶

set_start_and_end(start: SupportsPointify, end: SupportsPointify) → Self¶

static pointify_start_and_end(start: SupportsPointify, end: SupportsPointify) → tuple[ndarray, ndarray]¶

static pointify(item_or_data_or_point: SupportsPointify, direction: Vect | None = None) → ndarray¶: Take an argument passed into Line (or subclass) and turn it into a 3d point.

property vector: ndarray¶

property unit_vector: ndarray¶

property angle: float¶

get_projection(point: Vect) → ndarray¶: Return projection of a point onto the line

get_slope() → float¶

set_angle(angle: float, about_point: Vect | None = None) → Self¶

set_length(length: float, **kwargs)¶

property length: float¶

property arc_length: float¶

class janim.items.geometry.line.Line(start: Vect | Points = array([-1., 0., 0.]), end: Vect | Points = array([1., 0., 0.]), *, buff: float = 0, path_arc: float = 0, **kwargs)¶

基类：VItem

线段

传入 start, end 为线段起点终点

buff: 线段两端的空余量，默认为 0
path_arc: 表示线段的弯曲角度

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.line.TangentLine(vitem: VItem, alpha: float, length: float = 1, *, d_alpha: float = 1e-06, **kwargs)¶

基类：Line

切线

传入 vitem 表示需要做切线的物件，alpha 表示切点在 vitem 上的比例
length: 切线长度
d_alpha: 精细程度，越小越精细（默认 1e-6）

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.line.Elbow(width: float = 0.2, angle: float = 0, **kwargs)¶

基类：VItem

折线（一般用作直角符号）

width 表示宽度
angle 表示角度

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'>)}¶