def distance_on_curve(self, distance, close_parameter, estimate_parameter):
'''returns the parameter if there is a parameter
on the curve with a distance length from u
raises OutOfBoundary if no such parameter exists
'''
gcpa = GCPnts_AbscissaPoint(self.adaptor, distance, close_parameter, estimate_parameter, 1e-5)
with assert_isdone(gcpa, 'couldnt compute distance on curve'):
return gcpa.Parameter()
def arc_length(self, u1, u2, tol=1.0e-7):
"""
Calculate the curve length between the parameters.
:param float u1: First parameter.
:param float u2: Last parameter.
:param float tol: The tolerance.
:return: Curve length.
:rtype: float
"""
if u1 > u2:
u1, u2 = u2, u1
return GCPnts_AbscissaPoint.Length_(self.object, u1, u2, tol)
def length(self, lbound=None, ubound=None, tolerance=1e-5):
'''returns the curve length
if either lbound | ubound | both are given, than the length
of the curve will be measured over that interval
'''
_min, _max = self.domain()
if _min < self.adaptor.FirstParameter():
raise ValueError('the lbound argument is lower than the first parameter of the curve: %s ' % (self.adaptor.FirstParameter()))
if _max > self.adaptor.LastParameter():
raise ValueError('the ubound argument is greater than the last parameter of the curve: %s ' % (self.adaptor.LastParameter()))
lbound = _min if lbound is None else lbound
ubound = _max if ubound is None else ubound
return GCPnts_AbscissaPoint().Length(self.adaptor, lbound, ubound, tolerance)
def length_from_edge(edg):
curve_adapt = BRepAdaptor_Curve(edg)
length = GCPnts_AbscissaPoint().Length(curve_adapt,
curve_adapt.FirstParameter(),
curve_adapt.LastParameter(), 1e-6)
return length