sampler.h

/*****************************************************************************
 * VCLib                                                                     *
 * Visual Computing Library                                                  *
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 * Copyright(C) 2021-2025                                                    *
 * Visual Computing Lab                                                      *
 * ISTI - Italian National Research Council                                  *
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the              *
 * Mozilla Public License Version 2.0                                        *
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#ifndef VCL_CONCEPTS_SPACE_SAMPLER_H
#define VCL_CONCEPTS_SPACE_SAMPLER_H
 
#include <vclib/concepts/const_correctness.h>
#include <vclib/types/base.h>
 
namespace vcl {
 
template<typename T>
concept SamplerConcept = requires (T&& obj) {
    // TODO: make this concept more meaningful: add more requirements
    // on return types and parameters.
    typename RemoveRef<T>::PointType;
 
    obj.samples();
 
    { obj.size() } -> std::same_as<std::size_t>;
    obj.sample(uint());
 
    obj.begin();
    obj.end();
 
    // non const requirements
    requires IsConst<T> || requires {
        obj.clear();
        obj.reserve(uint());
        obj.resize(uint());
    };
};
 
} // namespace vcl
 
#endif // VCL_CONCEPTS_SPACE_SAMPLER_H