texture_paths.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 *
 * 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_TEXTURE_PATHS_H
#define VCL_MESH_COMPONENTS_TEXTURE_PATHS_H
 
#include "base/component.h"
#include "concepts/textures.h"
 
#include <vclib/base.h>
 
#include <string>
#include <vector>
 
namespace vcl::comp {
 
namespace detail {
 
struct TPData
{
    std::vector<std::string> texPaths;
    std::string              meshPath;
};
 
} // namespace detail
 
class TexturePaths :
        public Component<
            TexturePaths,
            CompId::TEXTURE_PATHS,
            detail::TPData,
            void,
            false,
            false>
{
    using Base = Component<
        TexturePaths,
        CompId::TEXTURE_PATHS,
        detail::TPData,
        void,
        false,
        false>;
 
public:
    // iterators
    using TexFileNamesIterator      = std::vector<std::string>::iterator;
    using ConstTexFileNamesIterator = std::vector<std::string>::const_iterator;
 
    /* Constructors */
 
    TexturePaths() = default;
 
    /* Member functions */
 
    uint textureNumber() const { return texPaths().size(); }
 
    const std::string& texturePath(uint i) const { return texPaths()[i]; }
 
    std::string& texturePath(uint i) { return texPaths()[i]; }
 
    const std::string& meshBasePath() const { return Base::data().meshPath; }
 
    std::string& meshBasePath() { return Base::data().meshPath; }
 
    uint indexOfTexturePath(const std::string& path) const
    {
        auto it = std::find(texPaths().begin(), texPaths().end(), path);
        if (it != texPaths().end()) {
            return static_cast<uint>(std::distance(texPaths().begin(), it));
        }
        return UINT_NULL;
    }
 
    void clearTexturePaths() { texPaths().clear(); }
 
    void pushTexturePath(const std::string& textName)
    {
        texPaths().push_back(textName);
    }
 
    TexFileNamesIterator texturePathBegin() { return texPaths().begin(); }
 
    TexFileNamesIterator texturePathEnd() { return texPaths().end(); }
 
    ConstTexFileNamesIterator texturePathBegin() const
    {
        return texPaths().begin();
    }
 
    ConstTexFileNamesIterator texturePathEnd() const
    {
        return texPaths().end();
    }
 
    View<TexFileNamesIterator> texturePaths()
    {
        return View(texturePathBegin(), texturePathEnd());
    }
 
    View<ConstTexFileNamesIterator> texturePaths() const
    {
        return View(texturePathBegin(), texturePathEnd());
    }
 
protected:
    // Component interface functions
    template<typename Element>
    void importFrom(const Element& e, bool = true)
    {
        if constexpr (HasTexturePaths<Element>) {
            texPaths().clear();
            for (const auto& tex : e.textures()) {
                texPaths().push_back(tex.path());
            }
            meshBasePath() = e.meshBasePath();
        }
    }
 
    void serialize(std::ostream& os) const
    {
        vcl::serialize(os, texPaths());
        vcl::serialize(os, meshBasePath());
    }
 
    void deserialize(std::istream& is)
    {
        vcl::deserialize(is, texPaths());
        vcl::deserialize(is, meshBasePath());
    }
 
private:
    // members that allow to access the data
    std::vector<std::string>& texPaths() { return Base::data().texPaths; }
 
    const std::vector<std::string>& texPaths() const
    {
        return Base::data().texPaths;
    }
};
 
} // namespace vcl::comp
 
#endif // VCL_MESH_COMPONENTS_TEXTURE_PATHS_H