tex_coord.h

/*****************************************************************************
 * VCLib                                                                     *
 * Visual Computing Library                                                  *
 *                                                                           *
 * 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                                        *
 * (https://www.mozilla.org/en-US/MPL/2.0/) for more details.                *
 ****************************************************************************/
 
#ifndef VCL_MESH_COMPONENTS_TEX_COORD_H
#define VCL_MESH_COMPONENTS_TEX_COORD_H
 
#include "base/component.h"
#include "base/predicates.h"
 
#include <vclib/space/core.h>
 
namespace vcl::comp {
 
template<typename Scalar, typename ParentElemType = void, bool OPT = false>
class TexCoord :
        public Component<
            TexCoord<Scalar, ParentElemType, OPT>,
            CompId::TEX_COORD,
            vcl::TexCoordIndexed<Scalar>,
            ParentElemType,
            !std::is_same_v<ParentElemType, void>,
            OPT>
{
    using Base = Component<
        TexCoord<Scalar, ParentElemType, OPT>,
        CompId::TEX_COORD,
        vcl::TexCoordIndexed<Scalar>,
        ParentElemType,
        !std::is_same_v<ParentElemType, void>,
        OPT>;
 
public:
    using TexCoordType = vcl::TexCoordIndexed<Scalar>;
 
    /* Constructors */
 
    TexCoord() = default;
 
    /* Member functions */
 
    const TexCoordType& texCoord() const { return Base::data(); }
 
    TexCoordType& texCoord() { return Base::data(); }
 
protected:
    // Component interface functions
    template<typename Element>
    void importFrom(const Element& e, bool = true);
 
    void serialize(std::ostream& os) const { texCoord().serialize(os); }
 
    void deserialize(std::istream& is) { texCoord().deserialize(is); }
};
 
/* concepts */
 
template<typename T>
concept HasTexCoord = TTB::IsDerivedFromSpecializationOfV<T, TexCoord>;
 
template<typename T>
concept HasOptionalTexCoord =
    HasTexCoord<T> && IsOptionalComponent<typename RemoveRef<T>::TexCoord>;
 
/* importFrom function */
 
template<typename Scalar, typename ParentElemType, bool OPT>
template<typename Element>
void TexCoord<Scalar, ParentElemType, OPT>::importFrom(const Element& e, bool)
{
    if constexpr (HasTexCoord<Element>) {
        if (isTexCoordAvailableOn(e)) {
            texCoord() = e.texCoord().template cast<Scalar>();
        }
    }
}
 
/* Detector function to check if a class has TexCoord available */
 
bool isTexCoordAvailableOn(const auto& element)
{
    return isComponentAvailableOn<CompId::TEX_COORD>(element);
}
 
/* Specialization Aliases */
 
template<typename ElementType = void, bool OPT = false>
using TexCoordf = TexCoord<float, ElementType, OPT>;
 
template<typename ElementType = void, bool OPT = false>
using TexCoordd = TexCoord<double, ElementType, OPT>;
 
} // namespace vcl::comp
 
#endif // VCL_MESH_COMPONENTS_TEX_COORD_H