U
    8ÄT_@  ã                   @   sp   d Z ddlmZmZmZmZ ddlmZ ddl	m
Z
 ddlmZ ddlmZmZ ddlmZ G dd	„ d	e
ƒZd
S )z®
 This module houses the GEOSCoordSeq object, which is used internally
 by GEOSGeometry to house the actual coordinates of the Point,
 LineString, and LinearRing geometries.
é    )ÚbyrefÚc_byteÚc_doubleÚc_uint)Ú
prototypes)ÚGEOSBase©ÚGEOSException)ÚCS_PTRÚgeos_version_tuple)Únumpyc                   @   sB  e Zd ZdZeZdHdd„Zdd„ Zdd„ Zd	d
„ Z	dd„ Z
dd„ Zdd„ Zdd„ Zdd„ Zdd„ Zdd„ Zdd„ Zdd„ Zdd„ Zedd „ ƒZd!d"„ Zd#d$„ Zd%d&„ Zd'd(„ Zd)d*„ Zd+d,„ Zd-d.„ Zd/d0„ Zd1d2„ Zd3d4„ Zd5d6„ Z d7d8„ Z!ed9d:„ ƒZ"ed;d<„ ƒZ#ed=d>„ ƒZ$d?d@„ Z%edAdB„ ƒZ&edCdD„ ƒZ'edEdF„ ƒZ(dGS )IÚGEOSCoordSeqzGThe internal representation of a list of coordinates inside a Geometry.Fc                 C   s"   t |tƒstdƒ‚|| _|| _dS )zInitialize from a GEOS pointer.z4Coordinate sequence should initialize with a CS_PTR.N)Ú
isinstancer
   Ú	TypeErrorZ_ptrÚ_z)ÚselfÚptrÚz© r   úD/tmp/pip-unpacked-wheel-dv63caxw/django/contrib/gis/geos/coordseq.pyÚ__init__   s    
zGEOSCoordSeq.__init__c                 c   s   t | jƒD ]}| | V  q
dS )z3Iterate over each point in the coordinate sequence.N)ÚrangeÚsize)r   Úir   r   r   Ú__iter__   s    zGEOSCoordSeq.__iter__c                 C   s   | j S )z7Return the number of points in the coordinate sequence.)r   ©r   r   r   r   Ú__len__    s    zGEOSCoordSeq.__len__c                 C   s
   t | jƒS )z<Return the string representation of the coordinate sequence.)ÚstrÚtupler   r   r   r   Ú__str__$   s    zGEOSCoordSeq.__str__c                 C   s   |   |¡ |  |¡S )z8Return the coordinate sequence value at the given index.)Ú_checkindexÚ_point_getter©r   Úindexr   r   r   Ú__getitem__(   s    
zGEOSCoordSeq.__getitem__c                 C   s|   t |ttfƒrntr"t |tjƒr"ntdƒ‚| jdkrF| jrFd}| j}n
d}| j	}t
|ƒ|krdtdƒ‚|  |¡ |||ƒ dS )z5Set the coordinate sequence value at the given index.zBMust set coordinate with a sequence (list, tuple, or numpy array).é   é   z"Dimension of value does not match.N)r   Úlistr   r   Zndarrayr   Údimsr   Ú_set_point_3dÚ_set_point_2dÚlenr    )r   r#   ÚvalueZn_argsZpoint_setterr   r   r   Ú__setitem__-   s    
zGEOSCoordSeq.__setitem__c                 C   s(   d|  kr| j k s$n td| ƒ‚dS )zCheck the given index.r   zinvalid GEOS Geometry index: %sN)r   Ú
IndexErrorr"   r   r   r   r    C   s    zGEOSCoordSeq._checkindexc                 C   s    |dk s|dkrt d| ƒ‚dS )zCheck the given dimension.r   r&   zinvalid ordinate dimension "%d"Nr   )r   Zdimr   r   r   Ú	_checkdimH   s    zGEOSCoordSeq._checkdimc                 C   s   t  | j|ttƒ ƒ¡S ©N)ÚcapiZcs_getxr   r   r   r"   r   r   r   Ú_get_xM   s    zGEOSCoordSeq._get_xc                 C   s   t  | j|ttƒ ƒ¡S r0   )r1   Zcs_getyr   r   r   r"   r   r   r   Ú_get_yP   s    zGEOSCoordSeq._get_yc                 C   s   t  | j|ttƒ ƒ¡S r0   )r1   Zcs_getzr   r   r   r"   r   r   r   Ú_get_zS   s    zGEOSCoordSeq._get_zc                 C   s   t  | j||¡ d S r0   )r1   Zcs_setxr   ©r   r#   r,   r   r   r   Ú_set_xV   s    zGEOSCoordSeq._set_xc                 C   s   t  | j||¡ d S r0   )r1   Zcs_setyr   r5   r   r   r   Ú_set_yY   s    zGEOSCoordSeq._set_yc                 C   s   t  | j||¡ d S r0   )r1   Zcs_setzr   r5   r   r   r   Ú_set_z\   s    zGEOSCoordSeq._set_zc                 C   s   | j dkr| jr| jS | jS )Nr%   )r(   r   Ú_get_point_3dÚ_get_point_2dr   r   r   r   r!   _   s    zGEOSCoordSeq._point_getterc                 C   s   |   |¡|  |¡fS r0   )r2   r3   r"   r   r   r   r:   c   s    zGEOSCoordSeq._get_point_2dc                 C   s   |   |¡|  |¡|  |¡fS r0   )r2   r3   r4   r"   r   r   r   r9   f   s    zGEOSCoordSeq._get_point_3dc                 C   s$   |\}}|   ||¡ |  ||¡ d S r0   )r6   r7   )r   r#   r,   ÚxÚyr   r   r   r*   i   s    zGEOSCoordSeq._set_point_2dc                 C   s2   |\}}}|   ||¡ |  ||¡ |  ||¡ d S r0   )r6   r7   r8   )r   r#   r,   r;   r<   r   r   r   r   r)   n   s    
zGEOSCoordSeq._set_point_3dc                 C   s,   |   |¡ |  |¡ t | j||ttƒ ƒ¡S )z3Return the value for the given dimension and index.)r    r/   r1   Zcs_getordinater   r   r   )r   Ú	dimensionr#   r   r   r   ÚgetOrdinateu   s    

zGEOSCoordSeq.getOrdinatec                 C   s*   |   |¡ |  |¡ t | j|||¡ dS )z0Set the value for the given dimension and index.N)r    r/   r1   Zcs_setordinater   )r   r=   r#   r,   r   r   r   ÚsetOrdinate{   s    

zGEOSCoordSeq.setOrdinatec                 C   s   |   d|¡S )zGet the X value at the index.r   ©r>   r"   r   r   r   ÚgetX�   s    zGEOSCoordSeq.getXc                 C   s   |   d||¡ dS )z(Set X with the value at the given index.r   N©r?   r5   r   r   r   ÚsetX…   s    zGEOSCoordSeq.setXc                 C   s   |   d|¡S )z#Get the Y value at the given index.é   r@   r"   r   r   r   ÚgetY‰   s    zGEOSCoordSeq.getYc                 C   s   |   d||¡ dS )z(Set Y with the value at the given index.rD   NrB   r5   r   r   r   ÚsetY�   s    zGEOSCoordSeq.setYc                 C   s   |   d|¡S )z(Get Z with the value at the given index.r&   r@   r"   r   r   r   ÚgetZ‘   s    zGEOSCoordSeq.getZc                 C   s   |   d||¡ dS )z(Set Z with the value at the given index.r&   NrB   r5   r   r   r   ÚsetZ•   s    zGEOSCoordSeq.setZc                 C   s   t  | jttƒ ƒ¡S )z,Return the size of this coordinate sequence.)r1   Z
cs_getsizer   r   r   r   r   r   r   r   š   s    zGEOSCoordSeq.sizec                 C   s   t  | jttƒ ƒ¡S )z2Return the dimensions of this coordinate sequence.)r1   Z
cs_getdimsr   r   r   r   r   r   r   r(   Ÿ   s    zGEOSCoordSeq.dimsc                 C   s   | j S )zƒ
        Return whether this coordinate sequence is 3D. This property value is
        inherited from the parent Geometry.
        )r   r   r   r   r   Úhasz¤   s    zGEOSCoordSeq.haszc                 C   s   t t | j¡| jƒS )zClone this coordinate sequence.)r   r1   Zcs_cloner   rI   r   r   r   r   Úclone­   s    zGEOSCoordSeq.clonec                    s:   ˆ j rd‰nd‰dd ‡ ‡fdd„ttˆ ƒƒD ƒ¡ ¡  S )z2Return the KML representation for the coordinates.z	%s,%s,%s z%s,%s,0 z<coordinates>%s</coordinates>Ú c                 3   s   | ]}ˆˆ |  V  qd S r0   r   ©Ú.0r   ©r   Úsubstrr   r   Ú	<genexpr>»   s     z#GEOSCoordSeq.kml.<locals>.<genexpr>)rI   Újoinr   r+   Ústripr   r   rN   r   Úkml±   s    $ÿzGEOSCoordSeq.kmlc                    s6   | j }| j‰ |dkrˆ dƒS t‡ fdd„t|ƒD ƒƒS )z3Return a tuple version of this coordinate sequence.rD   r   c                 3   s   | ]}ˆ |ƒV  qd S r0   r   rL   ©Z	get_pointr   r   rP   Ä   s     z%GEOSCoordSeq.tuple.<locals>.<genexpr>)r   r!   r   r   )r   Únr   rT   r   r   ½   s
    zGEOSCoordSeq.tuplec                 C   s¢   t ƒ dk rpd}t| ƒ}t|ƒD ]H}|d | }|| | d | | d  7 }|| | d | | d  8 }q|dkS tƒ }t | jt|ƒ¡s˜tdtjj	 ƒ‚|j
dkS )z<Return whether this coordinate sequence is counterclockwise.)r%   é   g        rD   r   z*Error encountered in GEOS C function "%s".)r   r+   r   r   r1   Z	cs_is_ccwr   r   r	   Ú	func_namer,   )r   ÚarearU   r   ÚjÚretr   r   r   Úis_counterclockwiseÆ   s    

ÿz GEOSCoordSeq.is_counterclockwiseN)F))Ú__name__Ú
__module__Ú__qualname__Ú__doc__r
   Zptr_typer   r   r   r   r$   r-   r    r/   r2   r3   r4   r6   r7   r8   Úpropertyr!   r:   r9   r*   r)   r>   r?   rA   rC   rE   rF   rG   rH   r   r(   rI   rJ   rS   r   r[   r   r   r   r   r      sV   






r   N)r_   Úctypesr   r   r   r   Zdjango.contrib.gis.geosr   r1   Zdjango.contrib.gis.geos.baser   Zdjango.contrib.gis.geos.errorr	   Zdjango.contrib.gis.geos.libgeosr
   r   Zdjango.contrib.gis.shortcutsr   r   r   r   r   r   Ú<module>   s   