Python | Sympy Circle()方法
原文:https://www.geeksforgeeks.org/python-sympy-circle-method/
In Simpy, the function Circle() is used to make circle from a center and a radius, from three non-collinear points, or the equation of a circle.
语法:
Circle()参数: 中心:点和 半径:数或符号表达式或 点:三点序列或 方程:圆的方程
误差:当给定的方程不是圆的方程时，产生几何误差。当试图用不正确的参数构造圆时。
示例#1:使用中心和半径
# import sympy and geometry module
from sympy.geometry import Point, Circle
# using Circle()
c1 = Circle(Point(0, 0), 5)
print(c1.hradius, c1.vradius, c1.radius)
输出:
(5, 5, 5)
例 2:使用三点序列
# import sympy and geometry module
from sympy.geometry import Point, Circle
# using Circle()
c2 = Circle(Point(0, 0), Point(1, 1), Point(1, 0))
print(c2.hradius, c2.vradius, c2.radius)
输出:
(sqrt(2)/2, sqrt(2)/2, sqrt(2)/2)
例#3:利用圆的方程
# import sympy and geometry module
from sympy.geometry import Point, Circle
from sympy import Eq
# using Circle()
c3 = Circle(x**2 + y**2 - 25)
print(c3)
输出:
Circle(Point2D(0, 0), 5)
