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o �h� � @ s d dl mZ G dd� d�ZdS )� )�gdalc @ s� e Zd ZdZedd� �Zedd� �Zedd� �Zedd � �Zed d � �Z ed d � �Z edd� �Z edd� �Z edd� �Z edd� �Zedd� �Zedd� �Zedd� �Zed d � �Zed$d d ��Zd!d"� Zd#S )%�SpatialRefSysMixinz~ The SpatialRefSysMixin is a class used by the database-dependent SpatialRefSys objects to reduce redundant code. c C s� t | d�r | j�� S z t�| j�| _| jW S ty) } z|}W Y d}~nd}~ww z t�| j�| _| jW S tyI } z|}W Y d}~nd}~ww td| j|f ��)z8 Return a GDAL SpatialReference object. �_srsNz9Could not get OSR SpatialReference from WKT: %s Error: %s) �hasattrr �cloner �SpatialReference�wkt�srs� Exception� proj4text)�self�e�msg� r �`/usr/local/CyberPanel/lib/python3.10/site-packages/django/contrib/gis/db/backends/base/models.pyr s* ������zSpatialRefSysMixin.srsc C � | j jS )z Return a tuple of the ellipsoid parameters: (semimajor axis, semiminor axis, and inverse flattening). )r � ellipsoid�r r r r r ( s z SpatialRefSysMixin.ellipsoidc C r )zReturn the projection name.)r �namer r r r r 0 � zSpatialRefSysMixin.namec C � | j d S )z4Return the spheroid name for this spatial reference.�spheroid�r r r r r r 5 � zSpatialRefSysMixin.spheroidc C r )z,Return the datum for this spatial reference.�datumr r r r r r : r zSpatialRefSysMixin.datumc C r )z$Is this Spatial Reference projected?)r � projectedr r r r r ? r z SpatialRefSysMixin.projectedc C r )z Is this Spatial Reference local?)r �localr r r r r D r zSpatialRefSysMixin.localc C r )z%Is this Spatial Reference geographic?)r � geographicr r r r r I r z SpatialRefSysMixin.geographicc C r )z Return the linear units name.)r � linear_namer r r r r N r z SpatialRefSysMixin.linear_namec C r )zReturn the linear units.)r � linear_unitsr r r r r S r z SpatialRefSysMixin.linear_unitsc C r )z%Return the name of the angular units.)r � angular_namer r r r r X r z SpatialRefSysMixin.angular_namec C r )zReturn the angular units.)r � angular_unitsr r r r r! ] r z SpatialRefSysMixin.angular_unitsc C s. | j s| jr | j| jfS | jr| j| jfS dS )z)Return a tuple of the units and the name.)NN)r r r r r r! r r r r r �unitsb s zSpatialRefSysMixin.unitsc C s t �|�jS )z Return a tuple of (unit_value, unit_name) for the given WKT without using any of the database fields. )r r r" )�clsr r r r � get_unitsl s z SpatialRefSysMixin.get_unitsTc C sZ t �|�}|j}|d }|s||fS t|�dkr"|d |d }}n|\}}d|||f S )z� Class method used by GeometryField on initialization to retrieve the `SPHEROID[..]` parameters from the given WKT. r � r � zSPHEROID["%s",%s,%s])r r r �len)r# r �stringr � sphere_params� sphere_name�radius� flatteningr r r � get_spheroidt s z SpatialRefSysMixin.get_spheroidc C s t | j�S )zG Return the string representation, a 'pretty' OGC WKT. )�strr r r r r �__str__� s zSpatialRefSysMixin.__str__N)T)�__name__� __module__� __qualname__�__doc__�propertyr r r r r r r r r r r r! r" � classmethodr$ r- r/ r r r r r sB r N)�django.contrib.gisr r r r r r �<module> s
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