vertex_container.h

/*****************************************************************************
 * VCLib                                                                     *
 * Visual Computing Library                                                  *
 *                                                                           *
 * Copyright(C) 2021-2025                                                    *
 * Visual Computing Lab                                                      *
 * ISTI - Italian National Research Council                                  *
 *                                                                           *
 * All rights reserved.                                                      *
 *                                                                           *
 * This program is free software; you can redistribute it and/or modify      *
 * it under the terms of the Mozilla Public License Version 2.0 as published *
 * by the Mozilla Foundation; either version 2 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              *
 * Mozilla Public License Version 2.0                                        *
 * (https://www.mozilla.org/en-US/MPL/2.0/) for more details.                *
 ****************************************************************************/
 
#ifndef VCL_CONCEPTS_MESH_CONTAINERS_VERTEX_CONTAINER_H
#define VCL_CONCEPTS_MESH_CONTAINERS_VERTEX_CONTAINER_H
 
#include <vclib/concepts/const_correctness.h>
#include <vclib/concepts/iterators.h>
#include <vclib/concepts/ranges/range.h>
 
#include <vector>
 
namespace vcl {
namespace mesh {
 
template<typename T>
concept HasVertexContainer = requires (
    T&&                                          obj,
    typename RemoveRef<T>::VertexType            v,
    typename RemoveRef<T>::VertexType*           vP,
    typename RemoveRef<T>::VertexType&           vR,
    typename RemoveRef<T>::VertexType::CoordType c,
    std::vector<uint>                            vec) {
    typename RemoveRef<T>::VertexType;
    typename RemoveRef<T>::VertexIterator;
    typename RemoveRef<T>::ConstVertexIterator;
 
    { obj.vertex(uint()) } -> std::convertible_to<decltype(v)>;
    { obj.vertexNumber() } -> std::same_as<uint>;
    { obj.vertexContainerSize() } -> std::same_as<uint>;
    { obj.deletedVertexNumber() } -> std::same_as<uint>;
 
    { obj.vertexIndexIfCompact(uint()) } -> std::same_as<uint>;
    { obj.vertexCompactIndices() } -> std::same_as<decltype(vec)>;
 
    { obj.vertexBegin() } -> InputIterator<decltype(v)>;
    { obj.vertexEnd() } -> InputIterator<decltype(v)>;
    { obj.vertices() } -> InputRange<decltype(v)>;
    { obj.vertices(bool()) } -> InputRange<decltype(v)>;
 
    // non const requirements
    requires IsConst<T> || requires {
        { obj.vertex(uint()) } -> std::same_as<decltype(vR)>;
 
        { obj.addVertex() } -> std::same_as<uint>;
        { obj.addVertex(c) } -> std::same_as<uint>;
        { obj.addVertices(uint()) } -> std::same_as<uint>;
        { obj.addVertices(c, c, c, c) } -> std::same_as<uint>;
        { obj.clearVertices() } -> std::same_as<void>;
        { obj.resizeVertices(uint()) } -> std::same_as<void>;
        { obj.reserveVertices(uint()) } -> std::same_as<void>;
        { obj.compactVertices() } -> std::same_as<void>;
        { obj.deleteVertex(uint()) } -> std::same_as<void>;
        { obj.deleteVertex(vP) } -> std::same_as<void>;
        { obj.updateVertexIndices(vec) } -> std::same_as<void>;
 
        { obj.vertexBegin() } -> OutputIterator<decltype(v)>;
        { obj.vertexEnd() } -> OutputIterator<decltype(v)>;
        { obj.vertices() } -> OutputRange<decltype(v)>;
        { obj.vertices(bool()) } -> OutputRange<decltype(v)>;
 
        { obj.enableAllPerVertexOptionalComponents() } -> std::same_as<void>;
        { obj.disableAllPerVertexOptionalComponents() } -> std::same_as<void>;
    };
};
 
} // namespace mesh
 
template<typename... Args>
concept HasVertices = (mesh::HasVertexContainer<Args> || ...);
 
} // namespace vcl
 
#endif // VCL_CONCEPTS_MESH_CONTAINERS_VERTEX_CONTAINER_H