How to use the pyresample.spherical.Arc function in pyresample

def _is_inside(self, other):
        """Checks if the polygon is entirely inside the other. Should be used
        with :meth:`inter` first to check if the is a known intersection.
        """

        anti_lon_0 = self.lon[0] + np.pi
        if anti_lon_0 > np.pi:
            anti_lon_0 -= np.pi * 2

        anti_lon_1 = self.lon[1] + np.pi
        if anti_lon_1 > np.pi:
            anti_lon_1 -= np.pi * 2

        arc1 = Arc(SCoordinate(self.lon[1],
                               self.lat[1]),
                   SCoordinate(anti_lon_0,
                               -self.lat[0]))

        arc2 = Arc(SCoordinate(anti_lon_0,
                               -self.lat[0]),
                   SCoordinate(anti_lon_1,
                               -self.lat[1]))

        arc3 = Arc(SCoordinate(anti_lon_1,
                               -self.lat[1]),
                   SCoordinate(self.lon[0],
                               self.lat[0]))

        other_arcs = [edge for edge in other.aedges()]
        for arc in [arc1, arc2, arc3]:

def aedges(self):
        """Iterator over the edges, in arcs of Coordinates."""
        for (lon_start, lat_start), (lon_stop, lat_stop) in self.edges():
            yield Arc(SCoordinate(lon_start, lat_start),
                      SCoordinate(lon_stop, lat_stop))

anti_lon_1 = self.lon[1] + np.pi
        if anti_lon_1 > np.pi:
            anti_lon_1 -= np.pi * 2

        arc1 = Arc(SCoordinate(self.lon[1],
                               self.lat[1]),
                   SCoordinate(anti_lon_0,
                               -self.lat[0]))

        arc2 = Arc(SCoordinate(anti_lon_0,
                               -self.lat[0]),
                   SCoordinate(anti_lon_1,
                               -self.lat[1]))

        arc3 = Arc(SCoordinate(anti_lon_1,
                               -self.lat[1]),
                   SCoordinate(self.lon[0],
                               self.lat[0]))

        other_arcs = [edge for edge in other.aedges()]
        for arc in [arc1, arc2, arc3]:
            inter, other_arc = arc.get_next_intersection(other_arcs)
            if inter is not None:
                sarc = Arc(arc.start, inter)
                earc = Arc(inter, other_arc.end)
                return sarc.angle(earc) < 0
        return other.area() > (2 * np.pi * other.radius ** 2)

arc2 = Arc(SCoordinate(anti_lon_0,
                               -self.lat[0]),
                   SCoordinate(anti_lon_1,
                               -self.lat[1]))

        arc3 = Arc(SCoordinate(anti_lon_1,
                               -self.lat[1]),
                   SCoordinate(self.lon[0],
                               self.lat[0]))

        other_arcs = [edge for edge in other.aedges()]
        for arc in [arc1, arc2, arc3]:
            inter, other_arc = arc.get_next_intersection(other_arcs)
            if inter is not None:
                sarc = Arc(arc.start, inter)
                earc = Arc(inter, other_arc.end)
                return sarc.angle(earc) < 0
        return other.area() > (2 * np.pi * other.radius ** 2)

if other._is_inside(self):
                return polys[sign]

            return None

        # starting from the intersection, follow the edges of one of the
        # polygons.

        while True:
            arcs1 = rotate_arcs(edge1, arcs1)
            arcs2 = rotate_arcs(edge2, arcs2)

            narcs1 = arcs1 + [edge1]
            narcs2 = arcs2 + [edge2]

            arc1 = Arc(inter, edge1.end)
            arc2 = Arc(inter, edge2.end)

            if np.sign(arc1.angle(arc2)) != sign:
                arcs1, arcs2 = arcs2, arcs1
                narcs1, narcs2 = narcs2, narcs1

            nodes.append(inter)

            for edge1 in narcs1:
                inter, edge2 = edge1.get_next_intersection(narcs2, inter)
                if inter is not None:
                    break
                elif len(nodes) > 0 and edge1.end not in [nodes[-1], nodes[0]]:
                    nodes.append(edge1.end)

            if inter is None and len(nodes) > 2 and nodes[-1] == nodes[0]:

arc2 = Arc(SCoordinate(anti_lon_0,
                               -self.lat[0]),
                   SCoordinate(anti_lon_1,
                               -self.lat[1]))

        arc3 = Arc(SCoordinate(anti_lon_1,
                               -self.lat[1]),
                   SCoordinate(self.lon[0],
                               self.lat[0]))

        other_arcs = [edge for edge in other.aedges()]
        for arc in [arc1, arc2, arc3]:
            inter, other_arc = arc.get_next_intersection(other_arcs)
            if inter is not None:
                sarc = Arc(arc.start, inter)
                earc = Arc(inter, other_arc.end)
                return sarc.angle(earc) < 0
        return other.area() > (2 * np.pi * other.radius ** 2)

"""

        anti_lon_0 = self.lon[0] + np.pi
        if anti_lon_0 > np.pi:
            anti_lon_0 -= np.pi * 2

        anti_lon_1 = self.lon[1] + np.pi
        if anti_lon_1 > np.pi:
            anti_lon_1 -= np.pi * 2

        arc1 = Arc(SCoordinate(self.lon[1],
                               self.lat[1]),
                   SCoordinate(anti_lon_0,
                               -self.lat[0]))

        arc2 = Arc(SCoordinate(anti_lon_0,
                               -self.lat[0]),
                   SCoordinate(anti_lon_1,
                               -self.lat[1]))

        arc3 = Arc(SCoordinate(anti_lon_1,
                               -self.lat[1]),
                   SCoordinate(self.lon[0],
                               self.lat[0]))

        other_arcs = [edge for edge in other.aedges()]
        for arc in [arc1, arc2, arc3]:
            inter, other_arc = arc.get_next_intersection(other_arcs)
            if inter is not None:
                sarc = Arc(arc.start, inter)
                earc = Arc(inter, other_arc.end)
                return sarc.angle(earc) < 0

return polys[sign]

            return None

        # starting from the intersection, follow the edges of one of the
        # polygons.

        while True:
            arcs1 = rotate_arcs(edge1, arcs1)
            arcs2 = rotate_arcs(edge2, arcs2)

            narcs1 = arcs1 + [edge1]
            narcs2 = arcs2 + [edge2]

            arc1 = Arc(inter, edge1.end)
            arc2 = Arc(inter, edge2.end)

            if np.sign(arc1.angle(arc2)) != sign:
                arcs1, arcs2 = arcs2, arcs1
                narcs1, narcs2 = narcs2, narcs1

            nodes.append(inter)

            for edge1 in narcs1:
                inter, edge2 = edge1.get_next_intersection(narcs2, inter)
                if inter is not None:
                    break
                elif len(nodes) > 0 and edge1.end not in [nodes[-1], nodes[0]]:
                    nodes.append(edge1.end)

            if inter is None and len(nodes) > 2 and nodes[-1] == nodes[0]:
                nodes = nodes[:-1]