填充螺旋

填充螺旋示例

  1. import matplotlib.pyplot as plt
  2. import numpy as np
  4. theta = np.arange(0, 8*np.pi, 0.1)
  5. a = 1
  6. b = .2
  8. for dt in np.arange(0, 2*np.pi, np.pi/2.0):
  10.     x = a*np.cos(theta + dt)*np.exp(b*theta)
  11.     y = a*np.sin(theta + dt)*np.exp(b*theta)
  13.     dt = dt + np.pi/4.0
  15.     x2 = a*np.cos(theta + dt)*np.exp(b*theta)
  16.     y2 = a*np.sin(theta + dt)*np.exp(b*theta)
  18.     xf = np.concatenate((x, x2[::-1]))
  19.     yf = np.concatenate((y, y2[::-1]))
  21.     p1 = plt.fill(xf, yf)
  23. plt.show()

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