def test_toCartesian(self):
"""MagePoint toCartesian() should transform coordinates correctly"""
m = MagePoint([.1,.2,.3])
self.assertEqual(m.toCartesian().Coordinates,[.6,.7,.5])
m = MagePoint()
self.assertEqual(m.toCartesian().Coordinates,[1,1,1])
m = MagePoint([.25,.25,.25],Color='red',Label='label',State='L')
self.assertEqual(m.toCartesian().Coordinates,[.5,.5,.5])
self.assertEqual(m.toCartesian().Color,m.Color)
self.assertEqual(m.toCartesian().Label,m.Label)
self.assertEqual(m.toCartesian().State,m.State)
m = MagePoint([1/3.0,1/3.0,0])
self.assertFloatEqual(m.toCartesian().Coordinates,
[2/3.0,1/3.0,2/3.0])
m = MagePoint([3,4,5])
self.assertRaises(ValueError,m.toCartesian)
def test_fromCartesian(self):
"""MagePoint fromCartesian should transform coordinates correctly"""
mp = MagePoint([2/3.0,1/3.0,2/3.0])
self.assertFloatEqual(mp.fromCartesian().Coordinates,[1/3.0,1/3.0,0])
points = [MagePoint([.1,.2,.3]),MagePoint([.25,.25,.25],Color='red',
Label='label',State='L'),MagePoint([1/3,1/3,0]),
MagePoint([0,0,0]),MagePoint([1/7,2/7,3/7])]
for m in points:
b = m.toCartesian().fromCartesian()
self.assertFloatEqual(m.Coordinates,b.Coordinates)
self.assertEqual(m.Color,b.Color)
self.assertEqual(m.Label,b.Label)
self.assertEqual(m.State,b.State)
#even after multiple iterations?
mutant = deepcopy(m)
for x in range(10):
mutant = mutant.toCartesian().fromCartesian()
self.assertFloatEqual(m.Coordinates,mutant.Coordinates)
def test_set_coord(self):
"""MagePoint _get_coord should return coordinate that is asked for"""
m = MagePoint([0,1,2])
m.X, m.Y, m.Z = 2,3,4
self.assertEqual(m.Coordinates,[2,3,4])
m = MagePoint()
m.X, m.Y, m.Z = 5,4,3
self.assertEqual(m.Coordinates,[5,4,3])
m = MagePoint()
m.X = 5
self.assertEqual(m.Coordinates,[5,0,0])
def MagePointFromString(line):
"""Constructs a new MagePoint from a one-line string."""
#handle the label if there is one: note that it might contain spaces
line = line.strip()
result = MagePoint()
label = extract_delimited(line, '{', '}')
if label:
pieces = line.replace('{'+label+'}', '').split()
else:
pieces = line.split()
fields = []
#also have to take into account the possibility of comma-delimited parts
for p in pieces:
fields.extend(filter(None, p.split(',')))
pieces = fields
result.Label = label
#get the coordinates and remove them from the list of items
result.Coordinates = map(float, pieces[-3:])
pieces = pieces[:-3]
#parse the remaining attributes in more detail
result.State = None
result.Width = None
result.Radius = None
result.Color = None
for attr in pieces:
#handle radius
if attr.startswith('r='): #radius: note case sensitivity
result.Radius = float(attr[2:])
#handle single-character attributes
elif len(attr) == 1:
result.State = attr
#handle line width
elif attr.startswith('width'):
result.Width = int(attr[5:])
else:
#otherwise assume it's a color label
result.Color = attr
return result