polygon.py 文件源码

def from_bbox(cls, bbox):
        "Constructs a Polygon from a bounding box (4-tuple)."
        x0, y0, x1, y1 = bbox
        for z in bbox:
            if not isinstance(z, six.integer_types + (float,)):
                return GEOSGeometry('POLYGON((%s %s, %s %s, %s %s, %s %s, %s %s))' %
                                    (x0, y0, x0, y1, x1, y1, x1, y0, x0, y0))
        return Polygon(((x0, y0), (x0, y1), (x1, y1), (x1, y0), (x0, y0)))

    # ### These routines are needed for list-like operation w/ListMixin ###