texture_images.h

/*****************************************************************************
 * VCLib                                                                     *
 * Visual Computing Library                                                  *
 *                                                                           *
 * Copyright(C) 2021-2025                                                    *
 * 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 *
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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_CONCEPTS_MESH_COMPONENTS_TEXTURE_IMAGES_H
#define VCL_CONCEPTS_MESH_COMPONENTS_TEXTURE_IMAGES_H
 
#include "texture_paths.h"
 
#include <vclib/concepts/space/texture.h>
 
#include <string>
 
namespace vcl::comp {
 
template<typename T>
concept HasTextureImages =
    HasTexturePaths<T> &&
    requires (T&& obj, typename RemoveRef<T>::TextureType t) {
        typename RemoveRef<T>::TextureType;
        typename RemoveRef<T>::TextureIterator;
        typename RemoveRef<T>::ConstTextureIterator;
 
        { obj.texture(uint()) } -> TextureConcept;
 
        { obj.textureBegin() } -> InputIterator<decltype(t)>;
        { obj.textureEnd() } -> InputIterator<decltype(t)>;
        { obj.textures() } -> InputRange<decltype(t)>;
 
        // non const requirements
        requires IsConst<T> || requires {
            { obj.clearTextures() } -> std::same_as<void>;
            { obj.pushTexture(std::string()) } -> std::same_as<void>;
            { obj.pushTexture(t) } -> std::same_as<void>;
 
            { obj.textureBegin() } -> OutputIterator<decltype(t)>;
            { obj.textureEnd() } -> OutputIterator<decltype(t)>;
            { obj.textures() } -> OutputRange<decltype(t)>;
        };
    };
 
} // namespace vcl::comp
 
#endif // VCL_CONCEPTS_MESH_COMPONENTS_TEXTURE_IMAGES_H