GrowArrow¶

限定名称: manim.animation.growing.GrowArrow

class GrowArrow(mobject=None, *args, use_override=True, **kwargs)[source]¶

基础：GrowFromPoint

通过从起点向尖端生长来引入一个Arrow。

Parameters:

arrow (Arrow) – 要引入的箭头。
point_color (str) – 箭头在增长到完整大小之前的初始颜色。留空以匹配箭头的颜色。

示例

示例：GrowArrowExample ¶

from manim import *

class GrowArrowExample(Scene):
    def construct(self):
        arrows = [Arrow(2 * LEFT, 2 * RIGHT), Arrow(2 * DR, 2 * UL)]
        VGroup(*arrows).set_x(0).arrange(buff=2)
        self.play(GrowArrow(arrows[0]))
        self.play(GrowArrow(arrows[1], point_color=RED))

class GrowArrowExample(Scene):
    def construct(self):
        arrows = [Arrow(2 * LEFT, 2 * RIGHT), Arrow(2 * DR, 2 * UL)]
        VGroup(*arrows).set_x(0).arrange(buff=2)
        self.play(GrowArrow(arrows[0]))
        self.play(GrowArrow(arrows[1], point_color=RED))

方法

create_starting_mobject

属性

`path_arc`
`path_func`