author | Pawel Solyga <Pawel.Solyga@gmail.com> |
Wed, 15 Apr 2009 15:56:17 +0000 | |
changeset 2185 | 09ca8e661728 |
parent 323 | ff1a9aa48cfd |
permissions | -rw-r--r-- |
323
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Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
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1 |
from django.contrib.gis.gdal.error import OGRException |
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Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
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2 |
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Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
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3 |
#### OGRGeomType #### |
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Pawel Solyga <Pawel.Solyga@gmail.com>
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class OGRGeomType(object): |
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5 |
"Encapulates OGR Geometry Types." |
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Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
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6 |
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# Dictionary of acceptable OGRwkbGeometryType s and their string names. |
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parents:
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_types = {0 : 'Unknown', |
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1 : 'Point', |
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2 : 'LineString', |
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Pawel Solyga <Pawel.Solyga@gmail.com>
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11 |
3 : 'Polygon', |
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Pawel Solyga <Pawel.Solyga@gmail.com>
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12 |
4 : 'MultiPoint', |
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5 : 'MultiLineString', |
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Pawel Solyga <Pawel.Solyga@gmail.com>
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14 |
6 : 'MultiPolygon', |
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15 |
7 : 'GeometryCollection', |
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100 : 'None', |
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17 |
101 : 'LinearRing', |
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parents:
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18 |
} |
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# Reverse type dictionary, keyed by lower-case of the name. |
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_str_types = dict([(v.lower(), k) for k, v in _types.items()]) |
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parents:
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21 |
|
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parents:
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def __init__(self, type_input): |
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23 |
"Figures out the correct OGR Type based upon the input." |
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24 |
if isinstance(type_input, OGRGeomType): |
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num = type_input.num |
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elif isinstance(type_input, basestring): |
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num = self._str_types.get(type_input.lower(), None) |
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if num is None: |
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Pawel Solyga <Pawel.Solyga@gmail.com>
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raise OGRException('Invalid OGR String Type "%s"' % type_input) |
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elif isinstance(type_input, int): |
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if not type_input in self._types: |
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raise OGRException('Invalid OGR Integer Type: %d' % type_input) |
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num = type_input |
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Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
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else: |
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Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
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raise TypeError('Invalid OGR input type given.') |
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parents:
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Pawel Solyga <Pawel.Solyga@gmail.com>
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# Setting the OGR geometry type number. |
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self.num = num |
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Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
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Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
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def __str__(self): |
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"Returns the value of the name property." |
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return self.name |
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parents:
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|
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parents:
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def __eq__(self, other): |
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""" |
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Does an equivalence test on the OGR type with the given |
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Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
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other OGRGeomType, the short-hand string, or the integer. |
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48 |
""" |
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parents:
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if isinstance(other, OGRGeomType): |
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return self.num == other.num |
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elif isinstance(other, basestring): |
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return self.name.lower() == other.lower() |
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elif isinstance(other, int): |
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return self.num == other |
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else: |
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return False |
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|
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def __ne__(self, other): |
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return not (self == other) |
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|
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@property |
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def name(self): |
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Pawel Solyga <Pawel.Solyga@gmail.com>
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"Returns a short-hand string form of the OGR Geometry type." |
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return self._types[self.num] |
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|
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@property |
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def django(self): |
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"Returns the Django GeometryField for this OGR Type." |
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Pawel Solyga <Pawel.Solyga@gmail.com>
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s = self.name |
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if s in ('Unknown', 'LinearRing', 'None'): |
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Pawel Solyga <Pawel.Solyga@gmail.com>
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return None |
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Pawel Solyga <Pawel.Solyga@gmail.com>
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72 |
else: |
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return s + 'Field' |