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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.
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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 �L/usr/lib/python3/dist-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 , � zSpatialRefSysMixin.namec C �
| j d S )z4Return the spheroid name for this spatial reference.�spheroid�r r r r r r 1 �
zSpatialRefSysMixin.spheroidc C r )z,Return the datum for this spatial reference.�datumr r r r r r 6 r zSpatialRefSysMixin.datumc C r )z$Is this Spatial Reference projected?)r � projectedr r r r r ; r z SpatialRefSysMixin.projectedc C r )z Is this Spatial Reference local?)r �localr r r r r @ r zSpatialRefSysMixin.localc C r )z%Is this Spatial Reference geographic?)r �
geographicr r r r r E r z SpatialRefSysMixin.geographicc C r )z Return the linear units name.)r � linear_namer r r r r J r z SpatialRefSysMixin.linear_namec C r )zReturn the linear units.)r � linear_unitsr r r r r O r z SpatialRefSysMixin.linear_unitsc C r )z%Return the name of the angular units.)r � angular_namer r r r r T r z SpatialRefSysMixin.angular_namec C r )zReturn the angular units.)r �
angular_unitsr r r r r! Y r z SpatialRefSysMixin.angular_unitsc C s. | j s| jr | j| jfS | jr| j| jfS dS )z)Return a tuple of the units and the name.)NN)r r r r r r! r r r r r �units^ s
zSpatialRefSysMixin.unitsc C s t �|�jS )z
Return a tuple of (unit_value, unit_name) for the given WKT without
using any of the database fields.
)r r r" )�clsr r r r � get_unitsh s z SpatialRefSysMixin.get_unitsTc C sZ t �|�}|j}|d }|s||fS t|�dkr"|d |d }}n|\}}d|||f S )z�
Class method used by GeometryField on initialization to
retrieve the `SPHEROID[..]` parameters from the given WKT.
r � r � zSPHEROID["%s",%s,%s])r r r �len)r# r �stringr �
sphere_params� sphere_name�radius�
flatteningr r r � get_spheroidp s
z SpatialRefSysMixin.get_spheroidc C s
t | j�S )zG
Return the string representation, a 'pretty' OGC WKT.
)�strr r r r r �__str__� s
zSpatialRefSysMixin.__str__N)T)�__name__�
__module__� __qualname__�__doc__�propertyr r r r r r r r r r r r! r" � classmethodr$ r- r/ r r r r r sB
r N)�django.contrib.gisr r r r r r �<module> s