bounding_box.h

/*****************************************************************************
 * VCLib                                                                     *
 * Visual Computing Library                                                  *
 *                                                                           *
 * Copyright(C) 2021-2026                                                    *
 * Visual Computing Lab                                                      *
 * ISTI - Italian National Research Council                                  *
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 * 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.                                       *
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 * 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_MESH_COMPONENTS_BOUNDING_BOX_H
#define VCL_MESH_COMPONENTS_BOUNDING_BOX_H
 
#include "base/component.h"
#include "base/predicates.h"
 
#include <vclib/space/core.h>
 
namespace vcl::comp {
 
template<
    PointConcept PointType,
    typename ParentElemType = void,
    bool OPT                = false>
class BoundingBox :
        public Component<
            BoundingBox<PointType, ParentElemType, OPT>,
            CompId::BOUNDING_BOX,
            Box<PointType>,
            ParentElemType,
            !std::is_same_v<ParentElemType, void>,
            OPT>
{
    using Base = Component<
        BoundingBox<PointType, ParentElemType, OPT>,
        CompId::BOUNDING_BOX,
        Box<PointType>,
        ParentElemType,
        !std::is_same_v<ParentElemType, void>,
        OPT>;
 
public:
    using BoundingBoxType = Box<PointType>;
 
    /* Constructors */
 
    BoundingBox() = default;
 
    /* Member functions */
 
    const BoundingBoxType& boundingBox() const { return Base::data(); }
 
    BoundingBoxType& boundingBox() { return Base::data(); }
 
protected:
    // Component interface functions
    template<typename Element>
    void importFrom(const Element& e, bool = true);
 
    void serialize(std::ostream& os) const { boundingBox().serialize(os); }
 
    void deserialize(std::istream& is) { boundingBox().deserialize(is); }
};
 
/* concept */
 
template<typename T>
concept HasBoundingBox = TTB::IsDerivedFromSpecializationOfV<T, BoundingBox>;
 
/* importFrom function */
 
template<PointConcept PointType, typename ParentElemType, bool OPT>
template<typename Element>
void BoundingBox<PointType, ParentElemType, OPT>::importFrom(
    const Element& e,
    bool)
{
    if constexpr (HasBoundingBox<Element>) {
        using ScalarType = PointType::ScalarType;
        boundingBox()    = e.boundingBox().template cast<ScalarType>();
    }
}
 
/* Detector function to check if a class has BoundingBox available */
 
bool isBoundingBoxAvailableOn(const auto& element)
{
    return isComponentAvailableOn<CompId::BOUNDING_BOX>(element);
}
 
/* Specializations */
 
template<typename S, typename ElementType = void, bool OPT = false>
using BoundingBox3 = BoundingBox<Point3<S>, ElementType, OPT>;
 
template<typename ElementType = void, bool OPT = false>
using BoundingBox3f = BoundingBox<Point3f, ElementType, OPT>;
 
template<typename ElementType = void, bool OPT = false>
using BoundingBox3d = BoundingBox<Point3d, ElementType, OPT>;
 
} // namespace vcl::comp
 
#endif // VCL_MESH_COMPONENTS_BOUNDING_BOX_H