TangentialArc

Qualified name: manim.mobject.geometry.arc.TangentialArc

class TangentialArc(line1, line2, radius, corner=(1, 1), **kwargs)

Bases: ArcBetweenPoints

Construct an arc that is tangent to two intersecting lines. You can choose any of the 4 possible corner arcs via the corner tuple. corner = (s1, s2) where each si is ±1 to control direction along each line.

Examples

Example: TangentialArcExample

from manim import *

class TangentialArcExample(Scene):
    def construct(self):
        line1 = DashedLine(start=3 * LEFT, end=3 * RIGHT)
        line1.rotate(angle=31 * DEGREES, about_point=ORIGIN)
        line2 = DashedLine(start=3 * UP, end=3 * DOWN)
        line2.rotate(angle=12 * DEGREES, about_point=ORIGIN)

        arc = TangentialArc(line1, line2, radius=2.25, corner=(1, 1), color=TEAL)
        self.add(arc, line1, line2)

class TangentialArcExample(Scene):
    def construct(self):
        line1 = DashedLine(start=3 * LEFT, end=3 * RIGHT)
        line1.rotate(angle=31 * DEGREES, about_point=ORIGIN)
        line2 = DashedLine(start=3 * UP, end=3 * DOWN)
        line2.rotate(angle=12 * DEGREES, about_point=ORIGIN)

        arc = TangentialArc(line1, line2, radius=2.25, corner=(1, 1), color=TEAL)
        self.add(arc, line1, line2)

The following example shows all four possible corner configurations:

Example: TangentialArcCorners

from manim import *

class TangentialArcCorners(Scene):
    def construct(self):
        # Create two intersecting lines
        line1 = DashedLine(start=3 * LEFT, end=3 * RIGHT, color=GREY)
        line2 = DashedLine(start=3 * UP, end=3 * DOWN, color=GREY)

        # All four corner configurations with different colors
        arc_pp = TangentialArc(line1, line2, radius=1.5, corner=(1, 1), color=RED)
        arc_pn = TangentialArc(line1, line2, radius=1.5, corner=(1, -1), color=GREEN)
        arc_np = TangentialArc(line1, line2, radius=1.5, corner=(-1, 1), color=BLUE)
        arc_nn = TangentialArc(line1, line2, radius=1.5, corner=(-1, -1), color=YELLOW)

        # Labels for each arc
        label_pp = Text("(1,1)", font_size=24, color=RED).next_to(arc_pp, UR, buff=0.1)
        label_pn = Text("(1,-1)", font_size=24, color=GREEN).next_to(arc_pn, DR, buff=0.1)
        label_np = Text("(-1,1)", font_size=24, color=BLUE).next_to(arc_np, UL, buff=0.1)
        label_nn = Text("(-1,-1)", font_size=24, color=YELLOW).next_to(arc_nn, DL, buff=0.1)

        self.add(line1, line2, arc_pp, arc_pn, arc_np, arc_nn)
        self.add(label_pp, label_pn, label_np, label_nn)

class TangentialArcCorners(Scene):
    def construct(self):
        # Create two intersecting lines
        line1 = DashedLine(start=3 * LEFT, end=3 * RIGHT, color=GREY)
        line2 = DashedLine(start=3 * UP, end=3 * DOWN, color=GREY)

        # All four corner configurations with different colors
        arc_pp = TangentialArc(line1, line2, radius=1.5, corner=(1, 1), color=RED)
        arc_pn = TangentialArc(line1, line2, radius=1.5, corner=(1, -1), color=GREEN)
        arc_np = TangentialArc(line1, line2, radius=1.5, corner=(-1, 1), color=BLUE)
        arc_nn = TangentialArc(line1, line2, radius=1.5, corner=(-1, -1), color=YELLOW)

        # Labels for each arc
        label_pp = Text("(1,1)", font_size=24, color=RED).next_to(arc_pp, UR, buff=0.1)
        label_pn = Text("(1,-1)", font_size=24, color=GREEN).next_to(arc_pn, DR, buff=0.1)
        label_np = Text("(-1,1)", font_size=24, color=BLUE).next_to(arc_np, UL, buff=0.1)
        label_nn = Text("(-1,-1)", font_size=24, color=YELLOW).next_to(arc_nn, DL, buff=0.1)

        self.add(line1, line2, arc_pp, arc_pn, arc_np, arc_nn)
        self.add(label_pp, label_pn, label_np, label_nn)

Methods

Attributes

always	Call a method on a mobject every frame.
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.

Parameters:

• line1 (Line)

• line2 (Line)

• radius (float)

• corner (Any)

• kwargs (Any)

_original__init__(line1, line2, radius, corner=(1, 1), **kwargs)

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

Parameters:

• line1 (Line)

• line2 (Line)

• radius (float)

• corner (Any)

• kwargs (Any)