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/* This file is part of the Gudhi Library. The Gudhi library
* (Geometric Understanding in Higher Dimensions) is a generic C++
* library for computational topology.
*
* Author(s): Marc Glisse
*
* Copyright (C) 2015 Inria
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* 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 for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/** \brief Concept of the template parameter for the class `Gudhi::Simplex_tree<SimplexTreeOptions>`.
*
* One model for this is `Gudhi::Simplex_tree_options_full_featured`. If you want to provide your own, it is recommended that you derive from it and override some parts instead of writing a class from scratch.
*/
struct SimplexTreeOptions {
/// Forced for now.
typedef IndexingTag Indexing_tag;
/// Must be a signed integer type. It admits a total order <.
typedef VertexHandle Vertex_handle;
/// Must be comparable with operator<.
typedef FiltrationValue Filtration_value;
/// Must be an integer type.
typedef SimplexKey Simplex_key;
/// If true, each simplex has extra storage for one `Simplex_key`. Necessary for `Persistent_cohomology`.
static const bool store_key;
/// If true, each simplex has extra storage for one `Filtration_value`, and this value is propagated by operations like `Gudhi::Simplex_tree::expansion`. Without it, `Persistent_cohomology` degenerates to computing usual (non-persistent) cohomology.
static const bool store_filtration;
/// If true, the list of vertices present in the complex must always be 0, ..., num_vertices-1, without any hole.
static constexpr bool contiguous_vertices;
};
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