U mÇ f©ã@sddlmZGdd„dƒZdS)é)Úgdalc@sÎeZdZdZedd„ƒZedd„ƒZedd„ƒZedd „ƒZed d „ƒZ ed d „ƒZ edd„ƒZ edd„ƒZ edd„ƒZ edd„ƒZedd„ƒZedd„ƒZedd„ƒZedd„ƒZed$dd „ƒZd!d"„Zd#S)%ÚSpatialRefSysMixinz~ The SpatialRefSysMixin is a class used by the database-dependent SpatialRefSys objects to reduce redundant code. c Cs¦t|dƒr|j ¡Szt |j¡|_|jWStk rP}z|}W5d}~XYnXzt |j¡|_|jWStk rŽ}z|}W5d}~XYnXtd|j|fƒ‚dS)z8 Return a GDAL SpatialReference object. Ú_srsNz9Could not get OSR SpatialReference from WKT: %s Error: %s) ÚhasattrrÚclonerÚSpatialReferenceÚwktÚsrsÚ ExceptionZ proj4text)ÚselfÚeÚmsg©rúN/tmp/pip-unpacked-wheel-siwebuq3/django/contrib/gis/db/backends/base/models.pyr s"  ÿÿzSpatialRefSysMixin.srscCs|jjS)z Return a tuple of the ellipsoid parameters: (semimajor axis, semiminor axis, and inverse flattening). )r Ú ellipsoid©r rrrr(szSpatialRefSysMixin.ellipsoidcCs|jjS)zReturn the projection name.)r Únamerrrrr0szSpatialRefSysMixin.namecCs |jdS)z4Return the spheroid name for this spatial reference.Úspheroid©r rrrrr5szSpatialRefSysMixin.spheroidcCs |jdS)z,Return the datum for this spatial reference.Údatumrrrrrr:szSpatialRefSysMixin.datumcCs|jjS)z$Is this Spatial Reference projected?)r Ú projectedrrrrr?szSpatialRefSysMixin.projectedcCs|jjS)z Is this Spatial Reference local?)r ÚlocalrrrrrDszSpatialRefSysMixin.localcCs|jjS)z%Is this Spatial Reference geographic?)r Ú geographicrrrrrIszSpatialRefSysMixin.geographiccCs|jjS)zReturn the linear units name.)r Ú linear_namerrrrrNszSpatialRefSysMixin.linear_namecCs|jjS)zReturn the linear units.)r Ú linear_unitsrrrrrSszSpatialRefSysMixin.linear_unitscCs|jjS)z%Return the name of the angular units.)r Ú angular_namerrrrrXszSpatialRefSysMixin.angular_namecCs|jjS)zReturn the angular units.)r Ú angular_unitsrrrrr]sz SpatialRefSysMixin.angular_unitscCs2|js |jr|j|jfS|jr*|j|jfSdSdS)z)Return a tuple of the units and the name.)NNN)rrrrrrrrrrrÚunitsbs    zSpatialRefSysMixin.unitscCs t |¡jS)z Return a tuple of (unit_value, unit_name) for the given WKT without using any of the database fields. )rrr)ÚclsrrrrÚ get_unitslszSpatialRefSysMixin.get_unitsTcCs^t |¡}|j}|d}|s$||fSt|ƒdkrD|d|d}}n|\}}d|||fSdS)zŒ Class method used by GeometryField on initialization to retrieve the `SPHEROID[..]` parameters from the given WKT. rérézSPHEROID["%s",%s,%s]N)rrrÚlen)rrÚstringr Z sphere_paramsZ sphere_nameZradiusZ flatteningrrrÚ get_spheroidts  zSpatialRefSysMixin.get_spheroidcCs t|jƒS)zG Return the string representation, a 'pretty' OGC WKT. )Ústrr rrrrÚ__str__ˆszSpatialRefSysMixin.__str__N)T)Ú__name__Ú __module__Ú __qualname__Ú__doc__Úpropertyr rrrrrrrrrrrrÚ classmethodrr$r&rrrrrs@               rN)Zdjango.contrib.gisrrrrrrÚs