本文整理汇总了Python中sympy.geometry.Curve类的典型用法代码示例。如果您正苦于以下问题：Python Curve类的具体用法？Python Curve怎么用？Python Curve使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。
在下文中一共展示了Curve类的5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，您的评价将有助于我们的系统推荐出更棒的Python代码示例。
示例1: test_geometry_transforms
def test_geometry_transforms():
from sympy import Tuple
c = Curve((x, x ** 2), (x, 0, 1))
pts = [Point(0, 0), Point(S(1) / 2, S(1) / 4), Point(1, 1)]
cout = Curve((2 * x - 4, 3 * x ** 2 - 10), (x, 0, 1))
pts_out = [Point(-4, -10), Point(-3, -S(37) / 4), Point(-2, -7)]
assert c.scale(2, 3, (4, 5)) == cout
assert [c.subs(x, xi / 2) for xi in Tuple(0, 1, 2)] == pts
assert [cout.subs(x, xi / 2) for xi in Tuple(0, 1, 2)] == pts_out
assert Triangle(*pts).scale(2, 3, (4, 5)) == Triangle(*pts_out)
assert Ellipse((0, 0), 2, 3).scale(2, 3, (4, 5)) == Ellipse(Point(-4, -10), 4, 9)
assert Circle((0, 0), 2).scale(2, 3, (4, 5)) == Ellipse(Point(-4, -10), 4, 6)
assert Ellipse((0, 0), 2, 3).scale(3, 3, (4, 5)) == Ellipse(Point(-8, -10), 6, 9)
assert Circle((0, 0), 2).scale(3, 3, (4, 5)) == Circle(Point(-8, -10), 6)
assert Circle(Point(-8, -10), 6).scale(S(1) / 3, S(1) / 3, (4, 5)) == Circle((0, 0), 2)
assert Curve((x + y, 3 * x), (x, 0, 1)).subs(y, S.Half) == Curve((x + S(1) / 2, 3 * x), (x, 0, 1))
assert Curve((x, 3 * x), (x, 0, 1)).translate(4, 5) == Curve((x + 4, 3 * x + 5), (x, 0, 1))
assert Circle((0, 0), 2).translate(4, 5) == Circle((4, 5), 2)
assert Circle((0, 0), 2).scale(3, 3) == Circle((0, 0), 6)
assert Point(1, 1).scale(2, 3, (4, 5)) == Point(-2, -7)
assert Point(1, 1).translate(4, 5) == Point(5, 6)
assert scale(1, 2, (3, 4)).tolist() == [[1, 0, 0], [0, 2, 0], [0, -4, 1]]
assert RegularPolygon((0, 0), 1, 4).scale(2, 3, (4, 5)) == Polygon(
Point(-2, -10), Point(-4, -7), Point(-6, -10), Point(-4, -13)
)
开发者ID:flacjacket，项目名称:sympy，代码行数:27，代码来源:test_geometry.py
示例2: test_curve
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)
raises(ValueError, 'Curve((s, s + t), (s, 1, 2)).arbitrary_point()')
raises(ValueError, 'Curve((s, s + t), (t, 1, 2)).arbitrary_point(s)')
开发者ID:AlexandruFlorescu，项目名称:sympy，代码行数:26，代码来源:test_geometry.py
示例3: test_transform
def test_transform():
x = Symbol('x', real=True)
y = Symbol('y', real=True)
c = Curve((x, x**2), (x, 0, 1))
cout = Curve((2*x - 4, 3*x**2 - 10), (x, 0, 1))
pts = [Point(0, 0), Point(1/2, 1/4), Point(1, 1)]
pts_out = [Point(-4, -10), Point(-3, -37/4), Point(-2, -7)]
assert c.scale(2, 3, (4, 5)) == cout
assert [c.subs(x, xi/2) for xi in Tuple(0, 1, 2)] == pts
assert [cout.subs(x, xi/2) for xi in Tuple(0, 1, 2)] == pts_out
assert Curve((x + y, 3*x), (x, 0, 1)).subs(y, S.Half) == \
Curve((x + 1/2, 3*x), (x, 0, 1))
assert Curve((x, 3*x), (x, 0, 1)).translate(4, 5) == \
Curve((x + 4, 3*x + 5), (x, 0, 1))
开发者ID:KonstantinTogoi，项目名称:sympy，代码行数:15，代码来源:test_curve.py
示例4: test_curve
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))
开发者ID:flacjacket，项目名称:sympy，代码行数:38，代码来源:test_geometry.py
示例5: test_parameter_value
def test_parameter_value():
t = Symbol('t')
C = Curve([2*t, t**2], (t, 0, 2))
assert C.parameter_value((2, 1), t) == {t: 1}
raises(ValueError, lambda: C.parameter_value((2, 0), t))
开发者ID:KonstantinTogoi，项目名称:sympy，代码行数:5，代码来源:test_curve.py
注：本文中的sympy.geometry.Curve类示例由纯净天空整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。 |
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