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#include "clickhouse_config.h"
#if USE_S2_GEOMETRY
#include <Columns/ColumnsNumber.h>
#include <Columns/ColumnTuple.h>
#include <DataTypes/DataTypesNumber.h>
#include <DataTypes/DataTypeTuple.h>
#include <Functions/FunctionFactory.h>
#include <Common/typeid_cast.h>
#include <Common/NaNUtils.h>
#include <base/range.h>
#error #include "s2_fwd.h"
namespace DB
{
namespace ErrorCodes
{
extern const int ILLEGAL_TYPE_OF_ARGUMENT;
extern const int BAD_ARGUMENTS;
extern const int ILLEGAL_COLUMN;
}
namespace
{
/**
* The cap represents a portion of the sphere that has been cut off by a plane.
* It is defined by a point on a sphere and a radius in degrees.
* Imagine that we draw a line through the center of the sphere and our point.
* An infinite number of planes pass through this line, but any plane will intersect the cap in two points.
* Thus the angle is defined by one of this points and the entire line.
* So, the radius of Pi/2 defines a hemisphere and the radius of Pi defines a whole sphere.
*
* This function returns whether a cap contains a point.
*/
class FunctionS2CapContains : public IFunction
{
public:
static constexpr auto name = "s2CapContains";
static FunctionPtr create(ContextPtr)
{
return std::make_shared<FunctionS2CapContains>();
}
std::string getName() const override
{
return name;
}
size_t getNumberOfArguments() const override { return 3; }
bool useDefaultImplementationForConstants() const override { return true; }
bool isSuitableForShortCircuitArgumentsExecution(const DataTypesWithConstInfo & /*arguments*/) const override { return true; }
DataTypePtr getReturnTypeImpl(const DataTypes & arguments) const override
{
for (size_t index = 0; index < getNumberOfArguments(); ++index)
{
const auto * arg = arguments[index].get();
/// Radius
if (index == 1)
{
if (!WhichDataType(arg).isFloat64())
throw Exception(
ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT,
"Illegal type {} of argument {} of function {}. Must be Float64",
arg->getName(), 2, getName());
}
else if (!WhichDataType(arg).isUInt64())
throw Exception(
ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT,
"Illegal type {} of argument {} of function {}. Must be UInt64",
arg->getName(), index + 1, getName());
}
return std::make_shared<DataTypeUInt8>();
}
ColumnPtr executeImpl(const ColumnsWithTypeAndName & arguments, const DataTypePtr &, size_t input_rows_count) const override
{
auto non_const_arguments = arguments;
for (auto & argument : non_const_arguments)
argument.column = argument.column->convertToFullColumnIfConst();
const auto * col_center = checkAndGetColumn<ColumnUInt64>(non_const_arguments[0].column.get());
if (!col_center)
throw Exception(
ErrorCodes::ILLEGAL_COLUMN,
"Illegal type {} of argument {} of function {}. Must be UInt64",
arguments[0].type->getName(),
1,
getName());
const auto & data_center = col_center->getData();
const auto * col_degrees = checkAndGetColumn<ColumnFloat64>(non_const_arguments[1].column.get());
if (!col_degrees)
throw Exception(
ErrorCodes::ILLEGAL_COLUMN,
"Illegal type {} of argument {} of function {}. Must be Float64",
arguments[1].type->getName(),
2,
getName());
const auto & data_degrees = col_degrees->getData();
const auto * col_point = checkAndGetColumn<ColumnUInt64>(non_const_arguments[2].column.get());
if (!col_point)
throw Exception(
ErrorCodes::ILLEGAL_COLUMN,
"Illegal type {} of argument {} of function {}. Must be UInt64",
arguments[2].type->getName(),
3,
getName());
const auto & data_point = col_point->getData();
auto dst = ColumnUInt8::create();
auto & dst_data = dst->getData();
dst_data.reserve(input_rows_count);
for (size_t row = 0; row < input_rows_count; ++row)
{
const auto center = S2CellId(data_center[row]);
const Float64 degrees = data_degrees[row];
const auto point = S2CellId(data_point[row]);
if (isNaN(degrees))
throw Exception(ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT, "Radius of the cap must not be nan");
if (std::isinf(degrees))
throw Exception(ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT, "Radius of the cap must not be infinite");
if (!center.is_valid())
throw Exception(ErrorCodes::BAD_ARGUMENTS, "Center is not valid");
if (!point.is_valid())
throw Exception(ErrorCodes::BAD_ARGUMENTS, "Point is not valid");
S1Angle angle = S1Angle::Degrees(degrees);
S2Cap cap(center.ToPoint(), angle);
dst_data.emplace_back(cap.Contains(point.ToPoint()));
}
return dst;
}
};
}
REGISTER_FUNCTION(S2CapContains)
{
factory.registerFunction<FunctionS2CapContains>();
}
}
#endif
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