code record

code record

# code record


## 以中心点旋转点.py

以中心点旋转点.py

import math

def rotate_point_around_center(x, y, center_x, center_y, angle):
  """
  以中心点旋转点

  Args:
    x: 点的x坐标
    y: 点的y坐标
    center_x: 中心点的x坐标
    center_y: 中心点的y坐标
    angle: 旋转角度，单位为度

  Returns:
    旋转后的点的坐标
  """

  angle = math.radians(angle)
  x_prime = (y - center_y) * math.cos(angle) - (x - center_x) * math.sin(angle) + center_x
  y_prime = (x - center_x) * math.cos(angle) + (y - center_y) * math.sin(angle) + center_y
  # 交换x和y坐标
  x_prime, y_prime = y_prime, x_prime
  return x_prime, y_prime


x = 690
y = 350

image_width = 720
image_height = 1280
center_x = image_width / 2
center_y = image_height / 2
angle = 90

x_prime, y_prime = rotate_point_around_center(x, y, center_x, center_y, angle)

print(x_prime, y_prime)