def discretize(cls, wire, deflection, method='quasi-deflection'):
""" Convert a wire to points.
Parameters
----------
deflection: Float or Int
Maximum deflection allowed if method is 'deflection' or
'quasi-'defelction' else this is the number of points
n: Int
Number of points to use
methode: Str
A value of either 'deflection' or 'abissca'
Returns
-------
points: List[Point]
A list of points that make up the curve
"""
c = BRepAdaptor_CompCurve(wire)
start = c.FirstParameter()
end = c.LastParameter()
fn = DISCRETIZE_METHODS[method.lower().replace('uniform', '')]
a = fn(c, deflection, start, end)
if method.endswith('abscissa'):
param = lambda i: c.Value(a.Parameter(i))
else:
param = lambda i: a.Value(i)
return [coerce_point(param(i)) for i in range(1, a.NbPoints() + 1)]
def discretize(cls, wire, deflection=0.01, quasi=True):
""" Convert a wire to points.
Parameters
----------
deflection: Float
Maximum deflection allowed
n: Int
Number of points to use
quasi: Bool
If True, use the Quasi variant which is faster but less accurate.
Returns
-------
points: List[Point]
A list of points that make up the curve
"""
c = BRepAdaptor_CompCurve(wire)
start = c.FirstParameter()
end = c.LastParameter()
if quasi:
a = GCPnts_QuasiUniformDeflection(c, deflection, start, end)
else:
a = GCPnts_UniformDeflection(c, deflection, start, end)
return [coerce_point(a.Value(i)) for i in range(1, a.NbPoints() + 1)]
def start_point(self):
""" Get the first / start point of a TopoDS_Wire or TopoDS_Edge
"""
curve = BRepAdaptor_CompCurve(self.shape)
return self.get_value_at(curve, curve.FirstParameter())