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/* Copyright (c) 2020, 2025, Oracle and/or its affiliates.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License, version 2.0,
as published by the Free Software Foundation.
This program is designed to work with certain software (including
but not limited to OpenSSL) that is licensed under separate terms,
as designated in a particular file or component or in included license
documentation. The authors of MySQL hereby grant you an additional
permission to link the program and your derivative works with the
separately licensed software that they have either included with
the program or referenced in the documentation.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License, version 2.0, for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
/**
@file
Interface for obtaining a point at a given distance on a linestring
*/
#ifndef SQL_GIS_LINE_INTERPOLATE_H_INCLUDED
#define SQL_GIS_LINE_INTERPOLATE_H_INCLUDED
#include <memory> // std::unique_ptr
#include "sql/dd/types/spatial_reference_system.h" // dd::Spatial_reference_system
#include "sql/gis/geometries.h"
namespace gis {
/// Finds the point in a linestring at a given distance from the starting point.
///
/// @param[in] srs The spatial reference system.
/// @param[in] g Input geometry.
/// @param[in] interpolation_distance The distance from the starting point.
/// @param[in] return_multiple_points True if the return geometry should be a
/// multipoint. False if the return value should be a single point.
/// @param[in] func_name Function name used in error reporting.
/// @param[out] result Result. Invalid if `result_null`.
/// @param[out] result_null Whether result is `NULL` instead of `result`.
///
/// @retval false Success.
/// @retval true An error has occurred. The error has been reported with
/// my_error().
bool line_interpolate_point(const dd::Spatial_reference_system *srs,
const Geometry *g,
const double interpolation_distance,
const bool return_multiple_points,
const char *func_name,
std::unique_ptr<Geometry> *result,
bool *result_null) noexcept;
} // namespace gis
#endif // SQL_GIS_LINE_INTERPOLATE_H_INCLUDED
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