def runTest(self):
pa = geom.PolyArea(Vs1, F1tri)
o = offset.Offset(pa, 0.0, 0.0)
sp = o.facespokes[0][0]
(t, ve, ee) = o.NextSpokeEvents(sp)
self.assertEqual(len(ve), 1)
pa = geom.PolyArea(Vs1, F1concave)
o = offset.Offset(pa, 0.0, 0.0)
sp = o.facespokes[0][1]
(t, ve, ee) = o.NextSpokeEvents(sp)
self.assertEqual(len(ee), 1)
self.assertFalse(ee[0].is_vertex_event)
self.assertEqual(len(ve), 0)
def testConcave(self):
pa = geom.PolyArea(Vs1, F1concave)
o = offset.Offset(pa, 0.0, 0.0)
o.Build()
self.assertEqual(len(o.inneroffsets), 2)
if SHOW:
ShowOffset(o)
def runTest(self):
pa = geom.PolyArea(Vs1, F1tri)
o = offset.Offset(pa, 0.0, 0.0)
o.Build(0.1)
pas = o.InnerPolyAreas()
self.assertEqual(len(pas.polyareas), 1)
ipa = pas.polyareas[0]
self.assertEqual(len(ipa.poly), 3)
def testIrreg(self):
pa = geom.PolyArea(Vs4, F4)
o = offset.Offset(pa, 0.0, 0.0)
o.Build()
self.assertAlmostEqual(o.endtime, 0.1155192686)
self.assertEqual(len(o.inneroffsets), 1)
if SHOW:
ShowOffset(o)
def testRect(self):
pa = geom.PolyArea(Vs2, [0, 12, 15, 1])
o = offset.Offset(pa, 0.0, 0.0)
o.Build()
self.assertAlmostEqual(o.endtime, 0.5)
self.assertEqual(len(o.inneroffsets), 0)
if SHOW:
ShowOffset(o)
def runTest(self):
pts = geom.Points([(0.0, -2.0), (0.5, 0.0), (1.0, 0.0), (2.0, 1.0),
(3.0, 0.0)])
pa = geom.PolyArea(pts, [0, 1, 2, 3, 4])
o = offset.Offset(pa, 0.0, 0.0)
sp = o.facespokes[0][1]
ev = sp.VertexEvent(o.facespokes[0][2], pa.points)
self.assertEqual(ev, None)
def testTri(self):
pa = geom.PolyArea(
geom.Points([(0.0, 0.0, 0.0), (1.0, 0.0, 0.0), (0.5, 0.25, 0.0)]),
[0, 1, 2])
o = offset.Offset(pa, 0.0, 0.0)
o.Build()
m = geom.Model()
m.points = pa.points
model.AddOffsetFacesToModel(m, o)
if SHOW:
showfaces.ShowFaces(m.faces, m.points, "Tri")
def testOneHole(self):
pa = geom.PolyArea(Vs1, F1square)
pahole = geom.PolyArea(
geom.Points([(0.3, 0.5, 0.0), (0.6, 0.65, 0.0), (0.45, 0.8, 0.0)]),
[0, 1, 2])
pa.AddHole(pahole)
o = offset.Offset(pa, 0.0, 0.0)
o.Build()
self.assertEqual(len(o.inneroffsets), 1)
if SHOW:
ShowOffset(o)
def testIrreg(self):
pa = geom.PolyArea(
geom.Points([(0.0, 0.1, 0.0), (-0.1, -0.2, 0.0), (0.1, -0.25, 0.0),
(0.3, 0.05, 0.0), (1.0, 0.0, 0.0), (1.1, 1.0, 0.0),
(-0.1, 1.2, 0.0)]), list(range(0, 7)))
o = offset.Offset(pa, 0.0, 0.0)
o.Build()
m = geom.Model()
m.points = pa.points
model.AddOffsetFacesToModel(m, o)
if SHOW:
showfaces.ShowFaces(m.faces, m.points, "Irreg")
def runTest(self):
pa = geom.PolyArea(Vs1, F1concave)
o = offset.Offset(pa, 0.0, 0.0)
sp = o.facespokes[0][1]
other = o.facespokes[0][3]
ev = sp.EdgeEvent(other, o)
# trig shows t/(.75-h)=sin(alpha) where tan(alpha)=2
alpha = math.atan(2)
sinalpha = math.sin(alpha)
t = 0.75 * sinalpha / (1.0 + sinalpha)
self.assertAlmostEqual(ev.time, t)
self.assertAlmostEqual(ev.event_vertex[0], 0.5)
self.assertAlmostEqual(ev.event_vertex[1], 1.0 - t)
def runTest(self):
pa = geom.PolyArea(Vs1, F1tri)
o = offset.Offset(pa, 0.0, 0.0)
sp = o.facespokes[0][0]
# spoke goes from (0,0) bisecting (1,0) and (1,.5) lines
alpha = math.atan(0.5)
halpha = alpha / 2.0 # angle of spoke
self.assertAlmostEqual(sp.speed, 1.0 / math.sin(halpha))
self.assertAlmostEqual(sp.dir[0], math.cos(halpha))
self.assertAlmostEqual(sp.dir[1], math.sin(halpha))
ev = sp.VertexEvent(o.facespokes[0][1], pa.points)
# time is height of triangle with base .5 and angle halpha
# that is also the y value of the intersection point
self.assertAlmostEqual(ev.time, 0.5 * math.tan(halpha))
self.assertAlmostEqual(ev.event_vertex[1], ev.time)
self.assertAlmostEqual(ev.event_vertex[0], 0.5)
def testD(self):
pa = geom.PolyArea(V3D, FDouter, [FDinner])
o = offset.Offset(pa, 0.0, 0.0)
o.Build()
if SHOW:
ShowOffset(o)
def test3(self):
pa = geom.PolyArea(V3D, F3)
o = offset.Offset(pa, 0.0, 0.0)
o.Build()
if SHOW:
ShowOffset(o)
def testM(self):
pa = geom.PolyArea(Vsm, Fsm)
o = offset.Offset(pa, 0.0, 0.0)
o.Build()
if SHOW:
ShowOffset(o)
def testTri(self):
pa = geom.PolyArea(Vs1, F1tri)
o = offset.Offset(pa, 0.0, 0.0)
o.Build()
self.assertAlmostEqual(o.endtime, 0.11803398875)
self.assertEqual(len(o.inneroffsets), 0)
