nearest_points.hpp

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/*
 * Copyright (c) 2022-2024, NVIDIA CORPORATION.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
 
#pragma once
 
#include <cudf/column/column_view.hpp>
#include <cudf/utilities/span.hpp>
 
#include <rmm/resource_ref.hpp>
 
#include <optional>
 
namespace cuspatial {
 
struct point_linestring_nearest_points_result {
  std::optional<std::unique_ptr<cudf::column>> nearest_point_geometry_id;
  std::optional<std::unique_ptr<cudf::column>> nearest_linestring_geometry_id;
  std::unique_ptr<cudf::column> nearest_segment_id;
  std::unique_ptr<cudf::column> nearest_point_on_linestring_xy;
};
 
point_linestring_nearest_points_result pairwise_point_linestring_nearest_points(
  std::optional<cudf::device_span<cudf::size_type const>> multipoint_geometry_offsets,
  cudf::column_view points_xy,
  std::optional<cudf::device_span<cudf::size_type const>> multilinestring_geometry_offsets,
  cudf::device_span<cudf::size_type const> linestring_part_offsets,
  cudf::column_view linestring_points_xy,
  rmm::device_async_resource_ref mr = rmm::mr::get_current_device_resource());
 
}  // namespace cuspatial