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Initialize on an exterior ring and a sequence of holes (both
instances may be either LinearRing instances, or a tuple/list
that may be constructed into a LinearRing).
Examples of initialization, where shell, hole1, and hole2 are
valid LinearRing geometries:
>>> from django.contrib.gis.geos import LinearRing, Polygon
>>> shell = hole1 = hole2 = LinearRing()
>>> poly = Polygon(shell, hole1, hole2)
>>> poly = Polygon(shell, (hole1, hole2))
>>> # Example where a tuple parameters are used:
>>> poly = Polygon(((0, 0), (0, 10), (10, 10), (0, 10), (0, 0)),
... ((4, 4), (4, 6), (6, 6), (6, 4), (4, 4)))
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�A/usr/lib/python3/dist-packages/django/contrib/gis/geos/polygon.pyr s zPolygon.__init__c c s" � t t| ��D ]}| | V qdS )z&Iterate over each ring in the polygon.N)�ranger )r �ir
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� S qt||f||f||f||f||ff�S )z2Construct a Polygon from a bounding box (4-tuple).z,POLYGON((%s %s, %s %s, %s %s, %s %s, %s %s)))r �float�intr r )�cls�bbox�x0�y0�x1�y1�zr
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zPolygon._clone�YParameter must be a sequence of LinearRings or objects that can initialize to LinearRingsc C s4 t |t�r|S zt|�}|W S ty t|��w )z1Try to construct a ring from the given parameter.)r r � TypeError)r �param�msg�ringr
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Return the ring at the specified index. The first index, 0, will
always return the exterior ring. Indices > 0 will return the
interior ring at the given index (e.g., poly[1] and poly[2] would
return the first and second interior ring, respectively).
CAREFUL: Internal/External are not the same as Interior/Exterior!
Return a pointer from the existing geometries for use internally by the
object's methods. _get_single_external() returns a clone of the same
geometry for use by external code.
r r )r0 � get_extringr> � get_intring�r �indexr
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r �_get_single_internalz s z Polygon._get_single_internalc C s t t�| �|��| jd�S )N)rE )r r0 r= rM rE rK r
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r �_get_single_external� s z Polygon._get_single_externalc C s t �| j�S )z$Return the number of interior rings.)r0 �
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r r � s zPolygon.num_interior_ringsc C s | d S )z%Get the exterior ring of the Polygon.r r
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_get_ext_ring� s zPolygon._get_ext_ringc C s || d< dS )z%Set the exterior ring of the Polygon.r Nr
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_set_ext_ring� s zPolygon._set_ext_ringc s t � fdd�tt� ��D ��S )z,Get the tuple for each ring in this Polygon.c 3 s � | ]}� | j V qd S r< )r �r- r r r
r � <genexpr>� s � z Polygon.tuple.<locals>.<genexpr>)r r r r r
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Polygon.tuplec s0 d� � fdd�t� j�D ��}d� d j|f S )z.Return the KML representation of this Polygon.� c 3 s" � | ] }d � |d j V qdS )z%<innerBoundaryIs>%s</innerBoundaryIs>r N)�kmlrR r r
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