a
    Kcòf6  ã                   @   sD   d dl mZ d dlmZ d dlmZ d dlmZ G dd„ deƒZ	dS )é    )Ú
prototypes)ÚGEOSGeometry)ÚGEOM_PTR)Ú
LinearRingc                       sÀ   e Zd ZdZ‡ fdd„Zdd„ Zdd„ Zedd	„ ƒZd
d„ Z	dd„ Z
d!dd„Zdd„ Zdd„ Zdd„ ZejZejZedd„ ƒZdd„ Zdd„ ZeeeƒZeZedd„ ƒZeZedd „ ƒZ‡  ZS )"ÚPolygoné   c                    s°   |s$t ƒ j|  dd¡fi |¤Ž dS |^}}t|ƒ}|dkr‚t|d ttfƒr‚|d s`d}d}n"t|d d tƒr‚|d }t|ƒ}|  |d |g|¢¡}t ƒ j|fi |¤Ž dS )aÓ  
        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), (10, 0), (0, 0)),
        ...                ((4, 4), (4, 6), (6, 6), (6, 4), (4, 4)))
        r   Nr   © )ÚsuperÚ__init__Ú_create_polygonÚlenÚ
isinstanceÚtupleÚlistr   )ÚselfÚargsÚkwargsZext_ringZ
init_holesÚn_holesZpolygon©Ú	__class__r   ú\/home/httpd/docs/test/DocsMgr/lib/python3.9/site-packages/django/contrib/gis/geos/polygon.pyr
   
   s    zPolygon.__init__c                 c   s    t t| ƒƒD ]}| | V  qdS )z&Iterate over each ring in the polygon.N)Úranger   )r   Úir   r   r   Ú__iter__0   s    zPolygon.__iter__c                 C   s
   | j d S )z+Return the number of rings in this Polygon.r   )Únum_interior_rings©r   r   r   r   Ú__len__5   s    zPolygon.__len__c                 C   sn   |\}}}}|D ]6}t |ttfƒstd||||||||||f
 ƒ  S qt||f||f||f||f||ffƒS )z2Construct a Polygon from a bounding box (4-tuple).z,POLYGON((%s %s, %s %s, %s %s, %s %s, %s %s)))r   ÚfloatÚintr   r   )ÚclsZbboxZx0Zy0Úx1Úy1Úzr   r   r   Ú	from_bbox9   s    ÿÿ
zPolygon.from_bboxc                    sŠ   |st  ¡ S g }|D ]*}t|tƒr.| |¡ q| ˆ  |¡¡ qˆ  | d¡¡}|d }|rxt| ‡ fdd„|D ƒŽ }nd }t  |||¡S )Nr   r   c                    s   g | ]}ˆ   |¡‘qS r   )Ú_clone)Ú.0Úrr   r   r   Ú
<listcomp>Y   ó    z+Polygon._create_polygon.<locals>.<listcomp>)	ÚcapiZcreate_empty_polygonr   r   ÚappendÚ_construct_ringr$   ÚpopZcreate_polygon)r   ÚlengthÚitemsZringsr&   Úshellr   Zholes_paramr   r   r   r   F   s    
zPolygon._create_polygonc                 C   s$   t |tƒrt |¡S t |j¡S d S ©N)r   r   r)   Ú
geom_cloneÚptr)r   Úgr   r   r   r$   _   s    

zPolygon._cloneúYParameter must be a sequence of LinearRings or objects that can initialize to LinearRingsc                 C   s8   t |tƒr|S z
t|ƒW S  ty2   t|ƒ‚Y n0 dS )z1Try to construct a ring from the given parameter.N)r   r   Ú	TypeError)r   ÚparamÚmsgr   r   r   r+   e   s    	

zPolygon._construct_ringc                 C   s2   | j }| j}|  ||¡| _ |r$|| _t |¡ d S r0   )r2   Úsridr   r)   Zdestroy_geom)r   r-   r.   Zprev_ptrr8   r   r   r   Ú	_set_listu   s    zPolygon._set_listc                 C   s*   |dkrt  | j¡S t  | j|d ¡S dS )a7  
        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   N)r)   Zget_extringr2   Zget_intring©r   Úindexr   r   r   Ú_get_single_internal   s    zPolygon._get_single_internalc                 C   s   t t |  |¡¡| jd�S )N)r8   )r   r)   r1   r<   r8   r:   r   r   r   Ú_get_single_external‘   s    ÿzPolygon._get_single_externalc                 C   s   t  | j¡S )z$Return the number of interior rings.)r)   Z
get_nringsr2   r   r   r   r   r   š   s    zPolygon.num_interior_ringsc                 C   s   | d S )z%Get the exterior ring of the Polygon.r   r   r   r   r   r   Ú_get_ext_ring    s    zPolygon._get_ext_ringc                 C   s   || d< dS )z%Set the exterior ring of the Polygon.r   Nr   )r   Úringr   r   r   Ú_set_ext_ring¤   s    zPolygon._set_ext_ringc                    s   t ‡ fdd„ttˆ ƒƒD ƒƒS )z,Get the tuple for each ring in this Polygon.c                 3   s   | ]}ˆ | j V  qd S r0   )r   ©r%   r   r   r   r   Ú	<genexpr>¯   r(   z Polygon.tuple.<locals>.<genexpr>)r   r   r   r   r   r   r   r   ¬   s    zPolygon.tuplec                    s0   d  ‡ fdd„tˆ jƒD ƒ¡}dˆ d j|f S )z.Return the KML representation of this Polygon.Ú c                 3   s    | ]}d ˆ |d  j  V  qdS )z%<innerBoundaryIs>%s</innerBoundaryIs>r   N)ÚkmlrA   r   r   r   rB   ¶   s   ÿzPolygon.kml.<locals>.<genexpr>z:<Polygon><outerBoundaryIs>%s</outerBoundaryIs>%s</Polygon>r   )Újoinr   r   rD   )r   Z	inner_kmlr   r   r   rD   ³   s    þþzPolygon.kml)r4   )Ú__name__Ú
__module__Ú__qualname__Z
_minlengthr
   r   r   Úclassmethodr#   r   r$   r+   r9   r<   r=   r   Z_set_single_rebuildZ_set_singleZ_assign_extended_slice_rebuildZ_assign_extended_sliceÚpropertyr   r>   r@   Zexterior_ringr/   r   ZcoordsrD   Ú__classcell__r   r   r   r   r      s4   &

 ü




r   N)
Zdjango.contrib.gis.geosr   r)   Z django.contrib.gis.geos.geometryr   Zdjango.contrib.gis.geos.libgeosr   Z"django.contrib.gis.geos.linestringr   r   r   r   r   r   Ú<module>   s   