def __new__(cls, *args, **kwargs):
c, r = None, None
if len(args) == 3 and isinstance(args[0], Point):
from polygon import Triangle
t = Triangle(args[0], args[1], args[2])
if t.area == 0:
raise GeometryError("Cannot construct a circle from three collinear points")
c = t.circumcenter
r = t.circumradius
elif len(args) == 2:
# Assume (center, radius) pair
c = args[0]
r = sympify(args[1])
if not (c is None or r is None):
return GeometryEntity.__new__(cls, c, r, **kwargs)
raise GeometryError("Circle.__new__ received unknown arguments")
def __new__(cls, *args, **kwargs):
c, r = None, None
if len(args) == 3:
args = [Point(a) for a in args]
if Point.is_collinear(*args):
raise GeometryError("Cannot construct a circle from three collinear points")
from polygon import Triangle
t = Triangle(*args)
c = t.circumcenter
r = t.circumradius
elif len(args) == 2:
# Assume (center, radius) pair
c = Point(args[0])
r = sympify(args[1])
if not (c is None or r is None):
return GeometryEntity.__new__(cls, c, r, **kwargs)
raise GeometryError("Circle.__new__ received unknown arguments")