(self)
return self.p1
The point from which the ray emanates.

        See Also
        ========

        sympy.geometry.point.Point

        Examples
        ========

        >>> from sympy import Point, Ray
        >>> p1, p2 = Point(0, 0), Point(4, 1)
        >>> r1 = Ray(p1, p2)
        >>> r1.source
        Point(0, 0)
The point from which the ray emanates.
The point from which the ray emanates .
def source(self):
        """The point from which the ray emanates.

        See Also
        ========

        sympy.geometry.point.Point

        Examples
        ========

        >>> from sympy import Point, Ray
        >>> p1, p2 = Point(0, 0), Point(4, 1)
        >>> r1 = Ray(p1, p2)
        >>> r1.source
        Point(0, 0)

        """
        return self.p1
def source ( self ) : return self . p1