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from __future__ import annotations (#2464)

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* from __future__ import annotations

* fixup! from __future__ import annotations

* fixup! from __future__ import annotations

* fixup! Format Python code with psf/black push

Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>
This commit is contained in:
Christian Clauss
2020-09-23 13:30:13 +02:00
committed by GitHub
parent 6e6a49d19f
commit 9200a2e543
72 changed files with 275 additions and 250 deletions
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14
graphics/bezier_curve.py
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@ -1,6 +1,6 @@
# https://en.wikipedia.org/wiki/B%C3%A9zier_curve
# https://www.tutorialspoint.com/computer_graphics/computer_graphics_curves.htm
from typing import List, Tuple
from __future__ import annotations
from scipy.special import comb
@ -12,7 +12,7 @@ class BezierCurve:
This implementation works only for 2d coordinates in the xy plane.
"""
def __init__(self, list_of_points: List[Tuple[float, float]]):
def __init__(self, list_of_points: list[tuple[float, float]]):
"""
list_of_points: Control points in the xy plane on which to interpolate. These
points control the behavior (shape) of the Bezier curve.
@ -22,7 +22,7 @@ class BezierCurve:
# Degree = 1 will produce a straight line.
self.degree = len(list_of_points) - 1
def basis_function(self, t: float) -> List[float]:
def basis_function(self, t: float) -> list[float]:
"""
The basis function determines the weight of each control point at time t.
t: time value between 0 and 1 inclusive at which to evaluate the basis of
@ -36,7 +36,7 @@ class BezierCurve:
[0.0, 1.0]
"""
assert 0 <= t <= 1, "Time t must be between 0 and 1."
output_values: List[float] = []
output_values: list[float] = []
for i in range(len(self.list_of_points)):
# basis function for each i
output_values.append(
@ -46,7 +46,7 @@ class BezierCurve:
assert round(sum(output_values), 5) == 1
return output_values
def bezier_curve_function(self, t: float) -> Tuple[float, float]:
def bezier_curve_function(self, t: float) -> tuple[float, float]:
"""
The function to produce the values of the Bezier curve at time t.
t: the value of time t at which to evaluate the Bezier function
@ -80,8 +80,8 @@ class BezierCurve:
"""
from matplotlib import pyplot as plt
to_plot_x: List[float] = [] # x coordinates of points to plot
to_plot_y: List[float] = [] # y coordinates of points to plot
to_plot_x: list[float] = [] # x coordinates of points to plot
to_plot_y: list[float] = [] # y coordinates of points to plot
t = 0.0
while t <= 1: