def test_cubic_line(self):
q = CubicBezier(Point(100, 240), Point(30, 60), Point(210, 230),
Point(160, 30))
l = Line(Point(25, 260), Point(230, 20))
path = BezierPath()
path.closed = False
path.activeRepresentation = SegmentRepresentation(path, [q])
i = q.intersections(l)
self.assertEqual(len(i), 3)
self.assertEqual(i[0].point, q.pointAtTime(0.117517031451))
self.assertEqual(i[1].point, q.pointAtTime(0.518591792307))
self.assertEqual(i[2].point, q.pointAtTime(0.867886610031))
def test_loop(self):
q = CubicBezier(
Point(171,272), Point(388,249), Point(167,444), Point(388,176)
)
self.assertTrue(not q.hasLoop)
q = CubicBezier(
Point(171,272), Point(595,249), Point(167,444), Point(388,176)
)
roots = q.hasLoop
p1 = q.pointAtTime(roots[0])
p2 = q.pointAtTime(roots[1])
self.assertTrue(q.hasLoop)
self.assertEqual(p1,p2)
# Subdivision
r1 = self.minDist(uinterval=(umin, newuMid), vinterval=(vmin, newvMid))
r2 = self.minDist(uinterval=(umin, newuMid), vinterval=(newvMid, vmax))
r3 = self.minDist(uinterval=(newuMid, umax), vinterval=(vmin, newvMid))
r4 = self.minDist(uinterval=(newuMid, umax), vinterval=(newvMid, vmax))
results = min([r1, r2, r3, r4], key=lambda x: x[0])
return results
def curveDistance(bez1, bez2):
"""Find the distance between two curves."""
c = MinimumCurveDistanceFinder(bez1, bez2)
dist, t1, t2 = c.minDist()
return math.sqrt(dist), t1, t2
if __name__ == "__main__":
bez1 = CubicBezier(Point(129, 139), Point(190, 139), Point(201, 364),
Point(90, 364))
bez2 = CubicBezier(Point(309, 159), Point(178, 159), Point(215, 408),
Point(309, 408))
bez3 = Line(Point(309, 159), Point(309, 408))
c = MinimumCurveDistanceFinder(bez1, bez3)
dist, t1, t2 = c.minDist()
print(bez1.pointAtTime(t1))
print(bez3.pointAtTime(t2))
print(math.sqrt(dist))
print(c.iterations)