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Don't have joint_angles, unit_normal and path_end_indices get refreshed for shift/scale/rotate

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Change unit_normal directly in rotate
In general, don't trigger refresh on apply_points_function
This commit is contained in:
Grant Sanderson 2024-08-26 11:41:32 -05:00
parent 7519ce15da
commit 5cf5e497e7
1 changed files with 23 additions and 25 deletions
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48
manimlib/mobject/types/vectorized_mobject.py
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@ -46,6 +46,7 @@ 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 rotation_between_vectors
from manimlib.utils.space_ops import rotation_matrix_transpose
from manimlib.utils.space_ops import poly_line_length
from manimlib.utils.space_ops import z_to_vector
from manimlib.shader_wrapper import ShaderWrapper
@ -865,11 +866,11 @@ class VMobject(Mobject):
(sums[:, 0] * diffs[:, 1]).sum(), # Add up (x0 + x1)*(y1 - y0)
])
def get_unit_normal(self) -> Vect3:
def get_unit_normal(self, refresh: bool = False) -> Vect3:
if self.get_num_points() < 3:
return OUT
if not self.needs_new_unit_normal:
if not self.needs_new_unit_normal and not refresh:
return self.data["base_normal"][1, :]
area_vect = self.get_area_vector()
@ -1218,31 +1219,28 @@ class VMobject(Mobject):
return self
@triggers_refresh
def apply_points_function(self, *args, **kwargs) -> Self:
return super().apply_points_function(*args, **kwargs)
def stretch(self, *args, **kwargs) -> Self:
return super().stretch(*args, **kwargs)
# General calls to apply_points_function should trigger a refresh
# to the joint angles, but these common ones shouldn't
def dont_refresh_joint_angles(func: Callable):
@wraps(func)
def wrapper(self, *args, **kwargs):
nnja = self.needs_new_joint_angles
result = func(self, *args, **kwargs)
self.needs_new_joint_angles = nnja
return result
return wrapper
@triggers_refresh
def apply_matrix(self, *args, **kwargs) -> Self:
return super().apply_matrix(*args, **kwargs)
@dont_refresh_joint_angles
def shift(self, *args, **kwargs) -> Self:
return super().shift(*args, **kwargs)
@dont_refresh_joint_angles
def scale(self, *args, **kwargs) -> Self:
return super().scale(*args, **kwargs)
@dont_refresh_joint_angles
def rotate(self, *args, **kwargs) -> Self:
return super().rotate(*args, **kwargs)
def rotate(
self,
angle: float,
axis: Vect3 = OUT,
about_point: Vect3 | None = None,
**kwargs
) -> Self:
rot_matrix_T = rotation_matrix_transpose(angle, axis)
self.apply_points_function(
lambda points: np.dot(points, rot_matrix_T),
about_point,
**kwargs
)
self.data["base_normal"][1::2] = np.dot(self.data["base_normal"][1::2], rot_matrix_T)
return self
def set_animating_status(self, is_animating: bool, recurse: bool = True):
super().set_animating_status(is_animating, recurse)