def test_tangents_2d():
dbcurve = DBezier(DEFPOINTS2D)
for index, epoint in enumerate(TANGENTS2D):
etx, ety = epoint
pnt, d1, d2 = dbcurve.point(index * .1)
assert isclose(etx, d1[0])
assert isclose(ety, d1[1])
def test_points_2d_2():
dbcurve = DBezier(DEFPOINTS2D)
for index, epoint in enumerate(POINTS2D):
epx, epy = epoint
pnt, d1, d2 = dbcurve.point(index * .1)
assert isclose(epx, pnt[0])
assert isclose(epy, pnt[1])
def dbezier():
curve = DBezier(DEFPOINTS3D)
return list(curve.approximate(40))
def test_point_and_tangent_2d():
dbcurve = DBezier(DEFPOINTS2D)
for index, (chk_pnt, chk_d1) in enumerate(zip(POINTS2D, TANGENTS2D)):
pnt, d1, d2 = dbcurve.point(index * .1)
assert pnt.isclose(chk_pnt)
assert d1.isclose(chk_d1)