Python | Sympy 椭圆. rotate()方法

原文:https://www . geesforgeks . org/python-sympy-ellipse-rotate-method/

In Sympy, the function rotate() is used to rotate the ellipse counterclockwise about the given point by the given angle.

Syntax: Ellipse.rotate(angle=0, pt=None)

Parameters:
angle: in radian
pt: point about which ellipse is rotated in counterclockwise.

Returns: rotated ellipse

示例#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)

输出:

Ellipse(Point2D(0, 1), 1, 2)

示例#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)

输出:

Ellipse(Point2D(3, 2), 1, 2)