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Add VMobject.add_arc_to method

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Grant Sanderson
2023-09-04 19:31:40 -04:00
parent 60a4f0e167
commit 690eb24562
1 changed files with 15 additions and 1 deletions
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16
manimlib/mobject/types/vectorized_mobject.py
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@ -21,8 +21,9 @@ from manimlib.utils.bezier import interpolate
from manimlib.utils.bezier import integer_interpolate
from manimlib.utils.bezier import inverse_interpolate
from manimlib.utils.bezier import find_intersection
from manimlib.utils.bezier import partial_quadratic_bezier_points
from manimlib.utils.bezier import outer_interpolate
from manimlib.utils.bezier import partial_quadratic_bezier_points
from manimlib.utils.bezier import quadratic_bezier_points_for_arc
from manimlib.utils.color import color_gradient
from manimlib.utils.color import rgb_to_hex
from manimlib.utils.iterables import make_even
@ -39,6 +40,7 @@ from manimlib.utils.space_ops import get_unit_normal
from manimlib.utils.space_ops import line_intersects_path
from manimlib.utils.space_ops import midpoint
from manimlib.utils.space_ops import normalize_along_axis
from manimlib.utils.space_ops import rotation_between_vectors
from manimlib.utils.space_ops import poly_line_length
from manimlib.utils.space_ops import z_to_vector
from manimlib.shader_wrapper import ShaderWrapper
@ -548,6 +550,18 @@ class VMobject(Mobject):
self.add_cubic_bezier_curve_to(new_handle, handle, point)
return self
def add_arc_to(self, point: Vect3, angle: float, n_components: int = 8) -> Self:
self.throw_error_if_no_points()
arc_points = quadratic_bezier_points_for_arc(angle, n_components)
target_vect = point - self.get_end()
curr_vect = arc_points[-1] - arc_points[0]
arc_points = arc_points @ rotation_between_vectors(curr_vect, target_vect).T
arc_points *= get_norm(target_vect) / get_norm(curr_vect)
arc_points += (self.get_end() - arc_points[0])
self.append_points(arc_points[1:])
return self
def has_new_path_started(self) -> bool:
points = self.get_points()
if len(points) == 0: