def testCell(self):
"""Testing functions in Cell."""
pts = [_Point(i) for i in range(3)]
segs = [_Segment("0", pts[0], pts[1]), _Segment("1", pts[1], pts[0]), _Segment("2", pts[2], pts[2])]
cell1 = _Cell("c1", _Path([segs[0].oseg(), segs[1].oseg()], iscycle=True))
cell2 = _Cell(
"c2", [_Path([segs[0].oseg(), segs[1].oseg()], iscycle=True), _Path([segs[2].oseg()], iscycle=True)]
)
self.assertEqual(cell1.toDomain(), {cell1: 1})
self.assertEqual(cell1.bdOneChain(), {segs[0]: 1, segs[1]: 1})
self.assertEqual(cell2.bdOneChain(), {segs[0]: 1, segs[1]: 1, segs[2]: 1})
def testDiff(self):
"""Testing diff function in Domain."""
pts = [_Point(i) for i in range(4)]
segs = [
_Segment("0", pts[0], pts[1]),
_Segment("1", pts[1], pts[2]),
_Segment("2", pts[2], pts[0]),
_Segment("3", pts[1], pts[3]),
_Segment("4", pts[3], pts[0]),
]
cell1 = _Cell("c1", _Path([seg.oseg() for seg in segs[0:3]], iscycle=True))
cell2 = _Cell("c2", _Path([seg.oseg() for seg in segs[0:1] + segs[3:]], iscycle=True).opp())
domain1 = cell1.toDomain() + cell2.toDomain()
self.assertEqual(domain1.diff(), {segs[1]: 1, segs[2]: 1, segs[3]: -1, segs[4]: -1})
def setUp(self):
self.n = 10
self.pts = [_Point(i) for i in range(self.n)]
self.segs = [_Segment(i, self.pts[i], self.pts[(i + 1) % self.n]) for i in range(self.n)]
self.osegs = [seg.oseg() for seg in self.segs]
self.osegsr = [seg.oseg().opp() for seg in self.segs]
self.loopseg = _Segment("loop", self.pts[0], self.pts[0])
self.oloopseg = self.loopseg.oseg()
# These should construct valid paths
self.path1 = _Path([], "empty")
self.path2 = _Path([self.oloopseg], "small_loop", True)
self.path3 = _Path(self.osegs[0:-1], "straight")
self.path4 = _Path(self.osegs, "loop", True)
self.path5 = _Path(self.osegs * 2, "twoloops")
self.path6 = _Path(reversed(self.osegsr), "opploop", True)
def testOrientedSegment(self):
"""Testing functions in OrientedSegment."""
p1 = _Point(1)
p2 = _Point(2)
seg = _Segment(12, p1, p2)
segp = seg.oseg()
segn = segp.opp()
self.assertEqual(segp.start, p1)
self.assertEqual(segp.end, p2)
self.assertEqual(segn.start, p2)
self.assertEqual(segn.end, p1)
self.assertEqual(segp.toOneChain(), {seg: 1})
self.assertEqual(segn.toOneChain(), {seg: -1})