#if !defined(ARCADIA_BUILD) # include "config_functions.h" #endif #if USE_H3 #include #include #include #include #include #include #include #include #include namespace DB { namespace ErrorCodes { extern const int ILLEGAL_TYPE_OF_ARGUMENT; extern const int ARGUMENT_OUT_OF_BOUND; } namespace { class FunctionH3EdgeAngle : public IFunction { public: static constexpr auto name = "h3EdgeAngle"; static FunctionPtr create(const Context &) { return std::make_shared(); } std::string getName() const override { return name; } size_t getNumberOfArguments() const override { return 1; } bool useDefaultImplementationForConstants() const override { return true; } DataTypePtr getReturnTypeImpl(const DataTypes & arguments) const override { const auto * arg = arguments[0].get(); if (!WhichDataType(arg).isUInt8()) throw Exception( "Illegal type " + arg->getName() + " of argument " + std::to_string(1) + " of function " + getName() + ". Must be UInt8", ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT); return std::make_shared(); } ColumnPtr executeImpl(const ColumnsWithTypeAndName & arguments, const DataTypePtr &, size_t input_rows_count) const override { const auto * col_hindex = arguments[0].column.get(); auto dst = ColumnVector::create(); auto & dst_data = dst->getData(); dst_data.resize(input_rows_count); for (const auto row : ext::range(0, input_rows_count)) { const int resolution = col_hindex->getUInt(row); if (resolution > MAX_H3_RES) throw Exception("The argument 'resolution' (" + toString(resolution) + ") of function " + getName() + " is out of bounds because the maximum resolution in H3 library is " + toString(MAX_H3_RES), ErrorCodes::ARGUMENT_OUT_OF_BOUND); // Numerical constant is 180 degrees / pi / Earth radius, Earth radius is from h3 sources Float64 res = 8.99320592271288084e-6 * edgeLengthM(resolution); dst_data[row] = res; } return dst; } }; } void registerFunctionH3EdgeAngle(FunctionFactory & factory) { factory.registerFunction(); } } #endif