ClickHouse/src/Functions/polygonPerimeter.cpp

Ignoring revisions in .git-blame-ignore-revs. Click here to bypass and see the normal blame view.

110 lines
2.9 KiB
C++
Raw Normal View History

2021-02-20 13:59:37 +00:00
#include <Functions/FunctionFactory.h>
#include <Functions/geometryConverters.h>
#include <boost/geometry.hpp>
#include <boost/geometry/geometries/point_xy.hpp>
#include <boost/geometry/geometries/polygon.hpp>
2022-04-27 15:05:45 +00:00
#include <Common/logger_useful.h>
#include <Columns/ColumnArray.h>
#include <Columns/ColumnTuple.h>
#include <Columns/ColumnsNumber.h>
#include <DataTypes/DataTypeArray.h>
#include <DataTypes/DataTypeTuple.h>
#include <DataTypes/DataTypesNumber.h>
#include <memory>
#include <string>
2021-02-20 13:59:37 +00:00
namespace DB
{
2021-02-20 17:44:18 +00:00
namespace ErrorCodes
{
extern const int ILLEGAL_TYPE_OF_ARGUMENT;
}
2021-02-20 13:59:37 +00:00
template <typename Point>
class FunctionPolygonPerimeter : public IFunction
{
public:
static const char * name;
explicit FunctionPolygonPerimeter() = default;
2021-06-01 12:20:52 +00:00
static FunctionPtr create(ContextPtr)
2021-02-20 13:59:37 +00:00
{
return std::make_shared<FunctionPolygonPerimeter>();
}
String getName() const override
{
return name;
}
bool isVariadic() const override
{
return false;
}
size_t getNumberOfArguments() const override
{
return 1;
}
DataTypePtr getReturnTypeImpl(const DataTypes &) const override
{
return std::make_shared<DataTypeFloat64>();
}
2021-06-22 16:21:23 +00:00
bool isSuitableForShortCircuitArgumentsExecution(const DataTypesWithConstInfo & /*arguments*/) const override { return true; }
2021-02-20 13:59:37 +00:00
ColumnPtr executeImpl(const ColumnsWithTypeAndName & arguments, const DataTypePtr & /*result_type*/, size_t input_rows_count) const override
{
auto res_column = ColumnFloat64::create();
auto & res_data = res_column->getData();
res_data.reserve(input_rows_count);
callOnGeometryDataType<Point>(arguments[0].type, [&] (const auto & type)
{
using TypeConverter = std::decay_t<decltype(type)>;
using Converter = typename TypeConverter::Type;
2021-02-26 15:29:26 +00:00
if constexpr (std::is_same_v<ColumnToPointsConverter<Point>, Converter>)
2021-02-20 17:44:18 +00:00
throw Exception(fmt::format("The argument of function {} must not be Point", getName()), ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT);
else
{
2021-02-26 15:29:26 +00:00
auto geometries = Converter::convert(arguments[0].column->convertToFullColumnIfConst());
2021-02-20 17:44:18 +00:00
2021-12-20 12:55:07 +00:00
for (size_t i = 0; i < input_rows_count; ++i)
2021-02-20 17:44:18 +00:00
res_data.emplace_back(boost::geometry::perimeter(geometries[i]));
}
2021-02-20 13:59:37 +00:00
}
);
return res_column;
}
bool useDefaultImplementationForConstants() const override
{
return true;
}
};
template <>
const char * FunctionPolygonPerimeter<CartesianPoint>::name = "polygonPerimeterCartesian";
template <>
2021-02-26 12:25:28 +00:00
const char * FunctionPolygonPerimeter<SphericalPoint>::name = "polygonPerimeterSpherical";
2021-02-20 13:59:37 +00:00
REGISTER_FUNCTION(PolygonPerimeter)
2021-02-20 13:59:37 +00:00
{
factory.registerFunction<FunctionPolygonPerimeter<CartesianPoint>>();
2021-02-26 12:25:28 +00:00
factory.registerFunction<FunctionPolygonPerimeter<SphericalPoint>>();
2021-02-20 13:59:37 +00:00
}
}