TangentLine

Qualified name: manim.mobject.geometry.line.TangentLine

class TangentLine(vmob, alpha, length=1, d_alpha=1e-06, **kwargs)

Bases: Line

Constructs a line tangent to a VMobject at a specific point.

Parameters:

• vmob (VMobject) – The VMobject on which the tangent line is drawn.

• alpha (float) – How far along the shape that the line will be constructed. range: 0-1.

• length (float) – Length of the tangent line.

• d_alpha (float) – The dx value

• kwargs – Additional arguments to be passed to Line

See also

point_from_proportion()

Examples

Example: TangentLineExample

from manim import *

class TangentLineExample(Scene):
    def construct(self):
        circle = Circle(radius=2)
        line_1 = TangentLine(circle, alpha=0.0, length=4, color=BLUE_D) # right
        line_2 = TangentLine(circle, alpha=0.4, length=4, color=GREEN) # top left
        self.add(circle, line_1, line_2)

class TangentLineExample(Scene):
    def construct(self):
        circle = Circle(radius=2)
        line_1 = TangentLine(circle, alpha=0.0, length=4, color=BLUE_D) # right
        line_2 = TangentLine(circle, alpha=0.4, length=4, color=GREEN) # top left
        self.add(circle, line_1, line_2)

Methods

Attributes

animate	Used to animate the application of any method of self.
animation_overrides
color
depth	The depth of the mobject.
fill_color	If there are multiple colors (for gradient) this returns the first one
height	The height of the mobject.
n_points_per_curve
sheen_factor
stroke_color
width	The width of the mobject.

_original__init__(vmob, alpha, length=1, d_alpha=1e-06, **kwargs)

Initialize self. See help(type(self)) for accurate signature.

Parameters:

• vmob (VMobject) –

• alpha (float) –

• length (float) –

• d_alpha (float) –

Return type:

None