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GeoJSON - refactor geometry generator to preserve geometry type in output (ref https://github.com/mapnik/python-mapnik/issues/139)

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This commit is contained in:
artemp 2017-03-21 16:48:41 +00:00
parent b4b5e33b05
commit 38b4b65911
1 changed files with 23 additions and 8 deletions
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31
include/mapnik/json/geometry_generator_grammar_impl.hpp
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@ -50,39 +50,54 @@ geometry_generator_grammar<OutputIterator, Geometry>::geometry_generator_grammar
|
geometry_collection
|
lit("null")
lit("null") // geometry_empty
;
point = lit("{\"type\":\"Point\",\"coordinates\":") << point_coord << lit("}")
;
linestring = lit("{\"type\":\"LineString\",\"coordinates\":[") << linestring_coord << lit("]}")
linestring = lit("{\"type\":\"LineString\",\"coordinates\":") << linestring_coord << lit("}")
;
polygon = lit("{\"type\":\"Polygon\",\"coordinates\":[") << polygon_coord << lit("]}")
polygon = lit("{\"type\":\"Polygon\",\"coordinates\":") << polygon_coord << lit("}")
;
multi_point = lit("{\"type\":\"MultiPoint\",\"coordinates\":[") << multi_point_coord << lit("]}")
;
multi_linestring = lit("{\"type\":\"MultiLineString\",\"coordinates\":[") << multi_linestring_coord << lit("]}")
;
multi_polygon = lit("{\"type\":\"MultiPolygon\",\"coordinates\":[") << multi_polygon_coord << lit("]}")
;
geometry_collection = lit("{\"type\":\"GeometryCollection\",\"geometries\":[") << geometries << lit("]}")
;
point_coord = lit('[') << coordinate << lit(',') << coordinate << lit(']')
;
linestring_coord = point_coord % lit(',')
linestring_coord = lit('[') << -(point_coord % lit(',')) << lit(']')
;
polygon_coord = lit('[') << exterior_ring_coord << lit(']') << interior_ring_coord
polygon_coord = lit('[') << exterior_ring_coord << interior_ring_coord << lit(']')
;
exterior_ring_coord = linestring_coord.alias()
;
interior_ring_coord = *(lit(",[") << exterior_ring_coord << lit(']'))
interior_ring_coord = *(lit(",") << exterior_ring_coord)
;
multi_point_coord = linestring_coord.alias()
;
multi_linestring_coord = (lit('[') << linestring_coord << lit(']')) % lit(',')
multi_linestring_coord = lit('[') << linestring_coord % lit(',') << lit(']')
;
multi_polygon_coord = (lit('[') << polygon_coord << lit(']')) % lit(',')
multi_polygon_coord = lit('[') << polygon_coord % lit(',') << lit("]")
;
geometries = geometry % lit(',')
;
}