随机生成云纹路径
for _ in range(num_curves):
x = np.random.uniform(0, size)
y = np.random.uniform(0, size)
points = []
for i in range(100):
angle = np.random.uniform(0, 2*np.pi)
r = np.random.uniform(0, scale)
x_new = x + r * np.cos(angle)
y_new = y + r * np.sin(angle)
x = x_new
y = y_new
if x < 0 or x size or y < 0 or y size:
break
points.append((x, y))
画线
draw.line(points, fill=(0,0,0), width=2)