本文整理汇总了Python中sympy.geometry.Curve.arbitrary_point方法的典型用法代码示例。如果您正苦于以下问题：Python Curve.arbitrary_point方法的具体用法？Python Curve.arbitrary_point怎么用？Python Curve.arbitrary_point使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类sympy.geometry.Curve的用法示例。
在下文中一共展示了Curve.arbitrary_point方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: test_curve
# 需要导入模块: from sympy.geometry import Curve [as 别名]
# 或者: from sympy.geometry.Curve import arbitrary_point [as 别名]
def test_curve():
s = Symbol('s')
z = Symbol('z')
# this curve is independent of the indicated parameter
c = Curve([2*s, s**2], (z, 0, 2))
assert c.parameter == z
assert c.functions == (2*s, s**2)
assert c.arbitrary_point() == Point(2*s, s**2)
assert c.arbitrary_point(z) == Point(2*s, s**2)
# this is how it is normally used
c = Curve([2*s, s**2], (s, 0, 2))
assert c.parameter == s
assert c.functions == (2*s, s**2)
t = Symbol('t')
assert c.arbitrary_point() != Point(2*t, t**2) # the t returned as assumptions
t = Symbol('t', real=True) # now t has the same assumptions so the test passes
assert c.arbitrary_point() == Point(2*t, t**2)
assert c.arbitrary_point(z) == Point(2*z, z**2)
assert c.arbitrary_point(c.parameter) == Point(2*s, s**2)
assert c.arbitrary_point(None) == Point(2*s, s**2)
assert c.plot_interval() == [t, 0, 2]
assert c.plot_interval(z) == [z, 0, 2]
raises(ValueError, 'Curve((s), (s, 1, 2))')
raises(ValueError, 'Curve((x, x * 2), (1, x))')
raises(ValueError, 'Curve((s, s + t), (s, 1, 2)).arbitrary_point()')
raises(ValueError, 'Curve((s, s + t), (t, 1, 2)).arbitrary_point(s)')示例2: test_curve
# 需要导入模块: from sympy.geometry import Curve [as 别名]
# 或者: from sympy.geometry.Curve import arbitrary_point [as 别名]
def test_curve():
s = Symbol('s')
z = Symbol('z')
# this curve is independent of the indicated parameter
c = Curve([2*s, s**2], (z, 0, 2))
assert c.parameter == z
assert c.functions == (2*s, s**2)
assert c.arbitrary_point() == Point(2*s, s**2)
assert c.arbitrary_point(z) == Point(2*s, s**2)
# this is how it is normally used
c = Curve([2*s, s**2], (s, 0, 2))
assert c.parameter == s
assert c.functions == (2*s, s**2)
t = Symbol('t')
assert c.arbitrary_point(
) != Point(2*t, t**2) # the t returned as assumptions
t = Symbol(
't', real=True) # now t has the same assumptions so the test passes
assert c.arbitrary_point() == Point(2*t, t**2)
assert c.arbitrary_point(z) == Point(2*z, z**2)
assert c.arbitrary_point(c.parameter) == Point(2*s, s**2)
assert c.arbitrary_point(None) == Point(2*s, s**2)
assert c.plot_interval() == [t, 0, 2]
assert c.plot_interval(z) == [z, 0, 2]
assert Curve([x, x], (x, 0, 1)
).rotate(pi/2, (1, 2)).scale(2, 3).translate(1, 3).arbitrary_point(s
) == \
Line((0, 0), (1, 1)
).rotate(pi/2, (1, 2)).scale(2, 3).translate(1, 3).arbitrary_point(s
) == Point(-2*s + 7, 3*s + 6)
raises(ValueError, lambda: Curve((s), (s, 1, 2)))
raises(ValueError, lambda: Curve((x, x * 2), (1, x)))
raises(ValueError, lambda: Curve((s, s + t), (s, 1, 2)).arbitrary_point())
raises(ValueError, lambda: Curve((s, s + t), (t, 1, 2)).arbitrary_point(s))