tex_coord.h

/*****************************************************************************
 * VCLib                                                                     *
 * Visual Computing Library                                                  *
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 * Copyright(C) 2021-2025                                                    *
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#ifndef VCL_CONCEPTS_SPACE_TEX_COORD_H
#define VCL_CONCEPTS_SPACE_TEX_COORD_H
 
#include <vclib/concepts/const_correctness.h>
#include <vclib/types.h>
 
namespace vcl {
 
template<typename T>
concept TexCoordConcept = requires (
    T&&                                obj,
    typename RemoveRef<T>::ScalarType  s,
    typename RemoveRef<T>::ScalarType& sR) {
    typename RemoveRef<T>::ScalarType;
 
    RemoveRef<T>();
    RemoveRef<T>(s, s);
 
    { obj.u() } -> std::convertible_to<decltype(s)>;
    { obj.v() } -> std::convertible_to<decltype(s)>;
 
    { obj <=> obj } -> std::convertible_to<std::partial_ordering>;
 
    { obj(uint()) } -> std::convertible_to<decltype(s)>;
    { obj[uint()] } -> std::convertible_to<decltype(s)>;
 
    // non const requirements
    requires IsConst<T> || requires {
        { obj.u() } -> std::same_as<decltype(sR)>;
        { obj.v() } -> std::same_as<decltype(sR)>;
        { obj.setU(s) } -> std::same_as<void>;
        { obj.setV(s) } -> std::same_as<void>;
        { obj.set(s, s) } -> std::same_as<void>;
 
        { obj(uint()) } -> std::same_as<decltype(sR)>;
        { obj[uint()] } -> std::same_as<decltype(sR)>;
    };
};
 
} // namespace vcl
 
#endif // VCL_CONCEPTS_SPACE_TEX_COORD_H