def test_Line_length(self):
a = xyz.Line(xyz.XY(0, 0), xyz.XY(1, 1))
self.assertEqual(a.length, Decimal('1.414'))
a = xyz.Line(xyz.XY(1, -3), xyz.XY(-5, -7))
self.assertEqual(a.length, Decimal('7.211'))
self.assertEqual(list(a.points), [xyz.XY(1, -3), xyz.XY(-5, -7)])
def test_Line_bisections(self):
a = xyz.Line(xyz.XY(0, 0), xyz.XY(4, 5))
self.assertEqual(a.middle, xyz.XY(2, 2.5))
self.assertEqual(a.top, xyz.Line(xyz.XY(2, 2.5), xyz.XY(4, 5)))
self.assertEqual(a.bottom, xyz.Line(xyz.XY(0, 0), xyz.XY(2, 2.5)))
self.assertEqual(a.xybisector,
xyz.Line(xyz.XY(-0.499, 4.499), xyz.XY(4.5, 0.5)))
def test_Line_sort(self):
a = xyz.XY(0, 0)
b = xyz.XY(3, 0)
c = xyz.XY(3, 4)
AB = xyz.Line(a, b)
BC = xyz.Line(b, c)
AC = xyz.Line(a, c)
good = [AB, BC, AC]
for abc in ([AB, BC, AC], [AB, AC, BC], [BC, AB, AC], [BC, AC, AB],
[AC, AB, BC], [AC, BC, AB]):
abc.sort()
self.assertEqual(good, abc)
def test_RightTriangle_angles(self):
a = xyz.XY(0,0)
b = xyz.XY(3,0)
c = xyz.XY(3,3)
for abc in ((a,b,c), (a,c,b), (b,a,c), (b,c,a), (c,a,b), (c,b,a)):
t = shapes.RightTriangle(abc[0], abc[1], abc[2])
self.assertTrue(t.a in [xyz.Line(xyz.XY(0,0), xyz.XY(3,0)),
xyz.Line(xyz.XY(3,0), xyz.XY(3,3))])
self.assertEqual(t.b, xyz.Line(xyz.XY(0,0), xyz.XY(3,3)))
self.assertTrue(t.c in [xyz.Line(xyz.XY(0,0), xyz.XY(3,0)),
xyz.Line(xyz.XY(3,0), xyz.XY(3,3))])
self.assertTrue(t.b.length >= t.a.length)
self.assertTrue(t.b.length >= t.c.length)
self.assertTrue(t.a.length >= t.c.length)
self.assertEqual(t.a.length, 3)
self.assertEqual(t.b.length, Decimal('4.243'))
self.assertEqual(t.c.length, 3)
self.assertEqual(t.BAC, 45)
self.assertEqual(t.ABC, 90)
self.assertEqual(t.ACB, 45)
self.assertEqual(t.Bmid, xyz.XY(1.5, 1.5))
a = xyz.XY(0,0)
b = xyz.XY(3,0)
c = xyz.XY(3,4)
AB = xyz.Line(a,b)
AC = xyz.Line(a,c)
BC = xyz.Line(b,c)
for abc in ((a,b,c), (a,c,b), (b,a,c), (b,c,a), (c,a,b), (c,b,a)):
t = shapes.RightTriangle(abc[0], abc[1], abc[2])
self.assertTrue(t.a in [BC, BC.reverse])
self.assertEqual(t.b, AC)
self.assertTrue(t.c in [AB, AB.reverse])
self.assertTrue(t.b.length >= t.a.length)
self.assertTrue(t.b.length >= t.c.length)
self.assertTrue(t.a.length >= t.c.length)
self.assertEqual(t.a.length, 4)
self.assertEqual(t.b.length, 5)
self.assertEqual(t.c.length, 3)
self.assertEqual(t.BAC, Decimal('36.87'))
self.assertEqual(t.ABC, 90)
self.assertEqual(t.ACB, Decimal('53.13000'))
self.assertEqual(t.Bmid, xyz.XY(1.5, 2))
def test_Line_atD(self):
a = xyz.Line(xyz.XY(0, 0), xyz.XY(4, 5))
d = a.length * 2
self.assertNotEqual(a.atD(d), xyz.XY(7, 10))
self.assertEqual(a.atD(d), xyz.XY(8, 10))
self.assertNotEqual(a.atD(d), xyz.XY(9, 10))
d = 0 - d
self.assertNotEqual(a.atD(d), xyz.XY(-7, -10))
self.assertEqual(a.atD(d), xyz.XY(-8, -10))
self.assertNotEqual(a.atD(d), xyz.XY(-9, -10))
def test_Line_xyBLAH(self):
a = xyz.Line(xyz.XY(0, 0), xyz.XY(4, 5))
self.assertEqual(a.xyb, 0)
self.assertEqual(a.xym, 1.25)
self.assertEqual(a.xybisector.xyb, Decimal("4.1"))
self.assertEqual(a.xybisector.xym, Decimal("-0.8"))
self.assertEqual(a.xyYAtX(-4), -5)
self.assertEqual(a.xyYAtX(0), 0)
self.assertEqual(a.xyYAtX(2), 2.5)
self.assertEqual(a.xyYAtX(4), 5)
self.assertEqual(a.xyYAtX(8), 10)
self.assertEqual(a.xyXAtY(-5), -4)
self.assertEqual(a.xyXAtY(0), 0)
self.assertEqual(a.xyXAtY(2.5), 2)
self.assertEqual(a.xyXAtY(5), 4)
self.assertEqual(a.xyXAtY(10), 8)
self.assertEqual(a.atX(4), xyz.XY(4, 5))
def test_Line(self):
a = xyz.XY(0,0)
b = xyz.XY(0.5, 0.86603)
l = xyz.Line(a, b)
self.assertEqual(l.xy_min.x, Decimal('0'))
self.assertEqual(l.xy_min.y, Decimal('0'))
self.assertEqual(l.xy_max.x, Decimal('0.5'))
self.assertEqual(l.xy_max.y, Decimal('0.866'))
self.assertEqual(l.xym, Decimal('1.732'))
self.assertEqual(l.xyb, Decimal('0'))
l = xyz.Line(b, a)
self.assertEqual(l.xym, Decimal('1.732'))
self.assertEqual(l.xyb, Decimal('0'))
a = xyz.XY(0,0)
b = xyz.XY(0.5, -0.86603)
l = xyz.Line(a, b)
self.assertEqual(l.xym, Decimal('-1.732'))
self.assertEqual(l.xyb, Decimal('0'))
l = xyz.Line(b, a)
self.assertEqual(l.xym, Decimal('-1.732'))
self.assertEqual(l.xyb, Decimal('0'))
a = xyz.XY(1,0)
b = xyz.XY(1.5, 0.86603)
l = xyz.Line(a, b)
self.assertEqual(l.xym, Decimal('1.732'))
self.assertEqual(l.xyb, Decimal('-1.732'))
a = xyz.XY(3,0)
b = xyz.XY(4,5)
l = xyz.Line(a, b)
self.assertEqual(l.xym, Decimal('5'))
self.assertEqual(l.xyb, Decimal('-15'))
def test_Triangle_subsets(self):
a = xyz.XY(0,0)
b = xyz.XY(1,0)
c = xyz.XY(0.5, math.sqrt(Decimal("0.75")))
for abc in ((a,b,c), (a,c,b), (b,a,c), (b,c,a), (c,a,b), (c,b,a)):
t = shapes.Triangle(abc[0], abc[1], abc[2])
self.assertEqual(t.A, a)
self.assertEqual(t.B, b)
self.assertEqual(t.C, c)
self.assertFalse(isinstance(t, shapes.RightTriangle))
self.assertTrue(t.b.length >= t.a.length)
self.assertTrue(t.b.length >= t.c.length)
self.assertTrue(t.a.length >= t.c.length)
l = t.a.length + t.c.length
l = t.a.length / l
l = t.b.length * l
self.assertEqual(t.a, xyz.Line(a, c))
self.assertEqual(t.b, xyz.Line(b, c))
self.assertEqual(t.c, xyz.Line(a, b))
self.assertEqual(t.a.length, 1)
self.assertEqual(t.b.length, 1)
self.assertEqual(t.c.length, 1)
mids = [xyz.XY(Decimal("0.25000"), Decimal("0.43301")),
xyz.XY(0.5, 0),
xyz.XY(Decimal("0.75000"), Decimal("0.43301"))]
self.assertTrue(t.Bmid in mids)
self.assertTrue(t.ABC > Decimal('59.001') and \
t.ABC < Decimal('60.001'))
self.assertTrue(t.BAC > Decimal('59.001') and \
t.ABC < Decimal('60.001'))
self.assertTrue(t.ACB > Decimal('59.001') and \
t.ABC < Decimal('60.001'))
a = xyz.XY(0,0)
b = xyz.XY(3,0)
c = xyz.XY(4,5)
for abc in ((a,b,c), (a,c,b), (b,a,c), (b,c,a), (c,a,b), (c,b,a)):
t = shapes.Triangle(abc[0], abc[1], abc[2])
self.assertFalse(isinstance(t, shapes.RightTriangle))
self.assertTrue(t.b.length >= t.a.length)
self.assertTrue(t.b.length >= t.c.length)
self.assertTrue(t.a.length >= t.c.length)
self.assertEqual(t.Bmid, xyz.XY(1.170, 1.464))
l = t.a.length + t.c.length
l = t.a.length / l
l = t.b.length * l
self.assertEqual(t.a, xyz.Line(xyz.XY(3,0), xyz.XY(4,5)))
self.assertEqual(t.b, xyz.Line(xyz.XY(0,0), xyz.XY(4,5)))
self.assertEqual(t.c, xyz.Line(xyz.XY(0,0), xyz.XY(3,0)))
self.assertEqual(t.a.length, Decimal('5.099'))
self.assertEqual(t.b.length, Decimal('6.403'))
self.assertEqual(t.c.length, 3)
self.assertEqual(t.thetaA, Decimal('51.340'))
self.assertEqual(t.thetaC, Decimal('-27.350'))
self.assertEqual(t.ABC, Decimal('101.31'))
self.assertEqual(t.BAC, Decimal('51.340'))
self.assertEqual(t.ACB, Decimal('27.35'))
def test_Line_distance(self):
a = xyz.Line(xyz.XY(0, 0), xyz.XY(4, 5))
A = xyz.XY(0, 4)
self.assertEqual(a.distance(A), Decimal('4.0615'))
def test_Line_reverse(self):
a = xyz.Line(xyz.XY(0, 0), xyz.XY(4, 5))
b = xyz.Line(xyz.XY(4, 5), xyz.XY(0, 0))
self.assertEqual(a.reverse, b)
def test_Line_str(self):
a = xyz.Line(xyz.XY(0, 0), xyz.XY(1, 1))
self.assertEqual(str(a), "Line(XY(0,0),XY(1,1))")