2020-06-17 15:29:08 +00:00
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#include <Functions/FunctionFactory.h>
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#include <Functions/geometryConverters.h>
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#include <boost/geometry.hpp>
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#include <boost/geometry/geometries/point_xy.hpp>
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#include <boost/geometry/geometries/polygon.hpp>
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2020-06-21 14:54:13 +00:00
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#include <common/logger_useful.h>
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2020-06-17 15:29:08 +00:00
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#include <Columns/ColumnArray.h>
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#include <Columns/ColumnTuple.h>
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2020-06-22 16:15:11 +00:00
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#include <Columns/ColumnConst.h>
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2020-06-17 15:29:08 +00:00
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#include <DataTypes/DataTypeArray.h>
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#include <DataTypes/DataTypeTuple.h>
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#include <DataTypes/DataTypeCustomGeo.h>
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#include <memory>
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2020-06-22 16:15:11 +00:00
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#include <utility>
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2020-06-17 15:29:08 +00:00
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namespace DB
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{
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class FunctionPolygonsIntersection : public IFunction
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{
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public:
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static inline const char * name = "polygonsIntersection";
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explicit FunctionPolygonsIntersection() = default;
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static FunctionPtr create(const Context &)
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{
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return std::make_shared<FunctionPolygonsIntersection>();
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}
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String getName() const override
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{
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return name;
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}
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bool isVariadic() const override
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{
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return false;
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}
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size_t getNumberOfArguments() const override
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{
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return 2;
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}
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DataTypePtr getReturnTypeImpl(const DataTypes &) const override
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{
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return DataTypeCustomMultiPolygonSerialization::nestedDataType();
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}
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2021-01-18 23:51:34 +00:00
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ColumnPtr executeImpl(const ColumnsWithTypeAndName & arguments, const DataTypePtr & /*result_type*/, size_t input_rows_count) const override
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2020-06-17 15:29:08 +00:00
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{
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2021-01-19 14:52:53 +00:00
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auto first_parser = makeGeometryFromColumnParser<CartesianPoint>(arguments[0]);
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2020-06-17 15:29:08 +00:00
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auto first_container = createContainer(first_parser);
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2021-01-19 14:52:53 +00:00
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auto second_parser = makeGeometryFromColumnParser<CartesianPoint>(arguments[1]);
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2020-06-17 15:29:08 +00:00
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auto second_container = createContainer(second_parser);
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2021-01-19 14:52:53 +00:00
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MultiPolygonSerializer<CartesianPoint> serializer;
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2020-06-17 15:29:08 +00:00
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for (size_t i = 0; i < input_rows_count; i++)
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{
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2021-01-19 12:02:56 +00:00
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if (i == 0)
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2020-06-22 16:15:11 +00:00
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get(first_parser, first_container, i);
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2021-01-19 12:02:56 +00:00
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if (i == 0)
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2020-06-22 16:15:11 +00:00
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get(second_parser, second_container, i);
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2020-06-17 15:29:08 +00:00
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2021-01-18 23:51:34 +00:00
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CartesianGeometry intersection = CartesianMultiPolygon({{{{}}}});
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2020-06-17 16:29:31 +00:00
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boost::geometry::intersection(
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boost::get<CartesianMultiPolygon>(first_container),
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boost::get<CartesianMultiPolygon>(second_container),
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boost::get<CartesianMultiPolygon>(intersection));
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2020-06-17 15:29:08 +00:00
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2021-01-18 23:51:34 +00:00
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boost::get<CartesianMultiPolygon>(intersection).erase(
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boost::get<CartesianMultiPolygon>(intersection).begin());
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2020-06-21 16:36:43 +00:00
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2020-06-17 16:29:31 +00:00
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serializer.add(intersection);
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2020-06-17 15:29:08 +00:00
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}
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2021-01-18 23:51:34 +00:00
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return serializer.finalize();
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2020-06-21 14:54:13 +00:00
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}
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bool useDefaultImplementationForConstants() const override
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{
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return true;
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2020-06-17 15:29:08 +00:00
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}
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};
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void registerFunctionPolygonsIntersection(FunctionFactory & factory)
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{
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factory.registerFunction<FunctionPolygonsIntersection>();
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}
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}
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