在Sympy中,該函數
rotate()
用於將橢圓圍繞給定點逆時針旋轉給定角度。用法: Ellipse.rotate(angle=0, pt=None) 參數: angle: in radian pt: point about which ellipse is rotated in counterclockwise. 返回: rotated ellipse
範例1:
# import sympy and pi, Ellipse
from sympy import Ellipse, pi
# using Ellipse() method
e1 = Ellipse((1, 0), 2, 1)
# using rotate() method
e1.rotate(pi / 2)
print(e1)
輸出:
Ellipse(Point2D(0, 1), 1, 2)
範例2:
# import sympy and pi, Ellipse
from sympy import Ellipse, pi
# using Ellipse() method
e2 = Ellipse((1, 0), 2, 1)
# using rotate() with given point method
e2.rotate(pi / 2, (1, 2))
print(e2)
輸出:
Ellipse(Point2D(3, 2), 1, 2)
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