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from zope.interface import Attribute, Interface |
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from zope.deprecation import deprecated |
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class IGeoreferenceable(Interface): |
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"""Marks classes that may be annotated with georeferencing properties. |
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""" |
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class IGeoInterface(Interface): |
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"""Provides the Python geo interface. |
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See http://trac.gispython.org/projects/PCL/wiki/PythonGeoInterface |
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for details. |
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""" |
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__geo_interface__ = Attribute("""Python Geo Interface""") |
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class IGeoreferenced(Interface): |
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"""A geographically referenced object. |
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The spatial reference system is implicitly long, lat WGS84. Geometry types |
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and coordinates shall follow the Python geo interface specification, which |
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itself tracks the GeoJSON draft specification at http://geojson.org. |
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""" |
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type = Attribute( |
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"""The name of the geometry type: 'Point', 'LineString', 'Polygon'""" |
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) |
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coordinates = Attribute("""A sequence of coordinate tuples""") |
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crs = Attribute("""A coordinate reference system as a dict. |
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The default is decimal degree longitude and latitude using the |
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WGS 1984 reference system.""") |
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class IWritableGeoreference(Interface): |
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def setGeoInterface(type, coordinates, crs): |
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"""Set the geometry via the geo interface.""" |
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class IWriteGeoreferenced(IGeoreferenced, IWritableGeoreference): |
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"""Supports read/write georeferencing. |
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""" |
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class IGeometry(IGeoInterface): |
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"""A geometry property with a geographic or projected coordinate system. |
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The spatial reference system is implicitly long, lat WGS84. Geometry types |
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and coordinates shall follow the Python geo interface specification, which |
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itself tracks the GeoJSON draft specification at http://geojson.org. |
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""" |
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type = Attribute( |
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'The name of the geometry type: "Point", "LineString", or "Polygon"' |
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) |
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coordinates = Attribute('A sequence of coordinate tuples') |
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class IGeoItem(IGeoInterface): |
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"""A simple georeferenced object, analogous to an entry in GeoRSS, or a |
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KML placemark. |
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""" |
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id = Attribute('Unique identifier for the item') |
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properties = Attribute('Mapping of item properties') |
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geometry = Attribute('An object that provides IGeometry (above)') |
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class IGeoCollection(IGeoInterface): |
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"""A collection of objects that provide IGeoItem, analogous to an Atom |
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feed or a KML folder. |
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""" |
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features = Attribute('Iterator over objects that provide IGeoItem') |
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deprecated( |
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'IGeometry', |
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'IGeometry will be removed from zgeo.geographer 1.0' |
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) |
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deprecated( |
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'IGeoItem', |
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'IGeoItem will be removed from zgeo.geographer 1.0' |
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) |
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deprecated( |
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'IGeoCollection', |
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'IGeoCollection will be removed from zgeo.geographer 1.0' |
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) |
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