def __init__(self, pnt, crv, tol=1.0e-10):
adp_crv = AdaptorCurve.to_adaptor(crv)
tool = Extrema_ExtPC(pnt, adp_crv.object, tol)
if not tool.IsDone():
msg = 'Extrema between point and curve failed.'
raise RuntimeError(msg)
self._nsol = tool.NbExt()
results = []
for i in range(1, self._nsol + 1):
di = sqrt(tool.SquareDistance(i))
ext_pnt = tool.Point(i)
gp_pnt = ext_pnt.Value()
ui = ext_pnt.Parameter()
pi = CheckGeom.to_point(gp_pnt)
results.append((di, ui, pi))
results.sort(key=lambda tup: tup[0])
self._dmin = results[0][0]
self._dmax = results[-1][0]
self._dist = [row[0] for row in results]
self._prms = [row[1] for row in results]
self._pnts = [row[2] for row in results]
def _distance_point_to_curve(point, curve):
"""
Find the minimum distance between a point and a curve.
"""
# OCC extrema.
adp_crv = AdaptorCurve.to_adaptor(curve)
ext_pc = Extrema_ExtPC(point, adp_crv.object)
if not ext_pc.IsDone():
return None
# Find the minimum result.
n_ext = ext_pc.NbExt()
for i in range(1, n_ext + 1):
if ext_pc.IsMin(i):
d = ext_pc.SquareDistance(i)
return sqrt(d)
return None