def curves2d_from_offset(event=None):
'''
@param display:
'''
pnt2d_array = TColgp_Array1OfPnt2d(1, 5)
pnt2d_array.SetValue(1, gp_Pnt2d(-4, 0))
pnt2d_array.SetValue(2, gp_Pnt2d(-7, 2))
pnt2d_array.SetValue(3, gp_Pnt2d(-6, 3))
pnt2d_array.SetValue(4, gp_Pnt2d(-4, 3))
pnt2d_array.SetValue(5, gp_Pnt2d(-3, 5))
spline_1 = Geom2dAPI_PointsToBSpline(pnt2d_array).Curve()
dist = 1
offset_curve1 = Geom2d_OffsetCurve(spline_1, dist)
result = offset_curve1.IsCN(2)
print("Offset curve yellow is C2: %r" % result)
dist2 = 1.5
offset_curve2 = Geom2d_OffsetCurve(spline_1, dist2)
result2 = offset_curve2.IsCN(2)
print("Offset curve blue is C2: %r" % result2)
display.DisplayShape(spline_1)
display.DisplayShape(offset_curve1, color='YELLOW')
display.DisplayShape(offset_curve2, color='BLUE', update=True)
def test_curves2d_from_offset(self):
'''Test: curves 2d from offset'''
array = []
array.append(gp_Pnt2d(-4, 0))
array.append(gp_Pnt2d(-7, 2))
array.append(gp_Pnt2d(-6, 3))
array.append(gp_Pnt2d(-4, 3))
array.append(gp_Pnt2d(-3, 5))
xxx = point2d_list_to_TColgp_Array1OfPnt2d(array)
SPL1 = Geom2dAPI_PointsToBSpline(xxx).Curve()
dist = 1
OC = Geom2d_OffsetCurve(SPL1, dist)
result = OC.IsCN(2)
dist2 = 1.5
OC2 = Geom2d_OffsetCurve(SPL1, dist2)
result2 = OC2.IsCN(2)