def _validate_close(self, vertex):
# close the polygon
if not self._open_loop:
raise AssertionError(
'invalid polygon: CLOSE vertex when loop close')
if self._lines < 2:
raise AssertionError('invalid polygon: minimum 2 lines required')
self._open_loop = False
# SphericalPolygon requires point[0] == point[-1]
point = self._polygon.points[0]
self._polygon.points.append(Point(point.cval1, point.cval2))
# validate the polygons in the multipolygon
validate_polygon(self._polygon)
# instantiate a new Polygon for the next iteration
self._polygon = Polygon()
def __init__(self):
self._lines = 0
self._open_loop = False
self._polygon = Polygon()