Abdelrahman Said
92 lines
2.9 KiB
C
92 lines
2.9 KiB
C
/*
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igraph library.
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Copyright (C) 2025 The igraph development team <igraph@igraph.org>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#ifndef IGRAPH_SPATIAL_H
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#define IGRAPH_SPATIAL_H
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#include "igraph_datatype.h"
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#include "igraph_decls.h"
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#include "igraph_types.h"
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#include "igraph_error.h"
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#include "igraph_matrix.h"
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IGRAPH_BEGIN_C_DECLS
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IGRAPH_EXPERIMENTAL IGRAPH_EXPORT igraph_error_t igraph_delaunay_graph(
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igraph_t *graph,
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const igraph_matrix_t *points);
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IGRAPH_EXPERIMENTAL IGRAPH_EXPORT igraph_error_t igraph_lune_beta_skeleton(
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igraph_t *graph,
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const igraph_matrix_t *points,
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igraph_real_t beta);
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IGRAPH_EXPERIMENTAL IGRAPH_EXPORT igraph_error_t igraph_circle_beta_skeleton(
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igraph_t *graph,
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const igraph_matrix_t *points,
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igraph_real_t beta);
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IGRAPH_EXPERIMENTAL IGRAPH_EXPORT igraph_error_t igraph_beta_weighted_gabriel_graph(
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igraph_t *graph,
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igraph_vector_t *weights,
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const igraph_matrix_t *points,
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igraph_real_t max_beta);
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IGRAPH_EXPERIMENTAL IGRAPH_EXPORT igraph_error_t igraph_gabriel_graph(
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igraph_t *graph, const igraph_matrix_t *points);
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IGRAPH_EXPERIMENTAL IGRAPH_EXPORT igraph_error_t igraph_relative_neighborhood_graph(
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igraph_t *graph, const igraph_matrix_t *points);
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/**
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* \typedef igraph_metric_t
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* \brief Metric functions for use with spatial computation.
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*
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* \enumval IGRAPH_METRIC_EUCLIDEAN The Euclidean distance, i.e. L2 metric.
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* \enumval IGRAPH_METRIC_MANHATTAN The Manhattan distance, i.e. L1 metric.
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*/
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typedef enum {
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IGRAPH_METRIC_EUCLIDEAN = 0,
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IGRAPH_METRIC_L2 = IGRAPH_METRIC_EUCLIDEAN,
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IGRAPH_METRIC_MANHATTAN = 1,
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IGRAPH_METRIC_L1 = IGRAPH_METRIC_MANHATTAN
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} igraph_metric_t;
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IGRAPH_EXPERIMENTAL IGRAPH_EXPORT igraph_error_t igraph_nearest_neighbor_graph(
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igraph_t *graph,
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const igraph_matrix_t *points,
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igraph_metric_t metric,
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igraph_int_t neighbors,
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igraph_real_t cutoff,
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igraph_bool_t directed);
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IGRAPH_EXPERIMENTAL IGRAPH_EXPORT igraph_error_t igraph_spatial_edge_lengths(
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const igraph_t *graph,
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igraph_vector_t *lengths,
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const igraph_matrix_t *points,
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igraph_metric_t metric);
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IGRAPH_EXPORT igraph_error_t igraph_convex_hull_2d(
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const igraph_matrix_t *data,
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igraph_vector_int_t *resverts,
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igraph_matrix_t *rescoords);
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IGRAPH_END_C_DECLS
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#endif
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