assimp/code/AssetLib/X/XFileImporter.h

/*
Open Asset Import Library (assimp)
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*/

/** @file  XFileImporter.h
 *  @brief Definition of the XFile importer class.
 */
#pragma once
#ifndef AI_XFILEIMPORTER_H_INC
#define AI_XFILEIMPORTER_H_INC

#include <map>

#include "XFileHelper.h"
#include <assimp/BaseImporter.h>

#include <assimp/types.h>

struct aiNode;

namespace Assimp    {

namespace XFile {
    struct Scene;
    struct Node;
}

// ---------------------------------------------------------------------------
/** The XFileImporter is a worker class capable of importing a scene from a
 *   DirectX file .x
 */
class XFileImporter : public BaseImporter {
public:
    XFileImporter();
    ~XFileImporter() override = default;

    // -------------------------------------------------------------------
    /** Returns whether the class can handle the format of the given file.
     * See BaseImporter::CanRead() for details. */
    bool CanRead( const std::string& pFile, IOSystem* pIOHandler,
        bool CheckSig) const override;

protected:
    // -------------------------------------------------------------------
    /** Return importer meta information.
     * See #BaseImporter::GetInfo for the details
     */
    const aiImporterDesc* GetInfo () const override;

    // -------------------------------------------------------------------
    /** Imports the given file into the given scene structure.
     * See BaseImporter::InternReadFile() for details
     */
    void InternReadFile( const std::string& pFile, aiScene* pScene,
        IOSystem* pIOHandler) override;

    // -------------------------------------------------------------------
    /** Constructs the return data structure out of the imported data.
     * @param pScene The scene to construct the return data in.
     * @param pData The imported data in the internal temporary
     *   representation.
     */
    void CreateDataRepresentationFromImport( aiScene* pScene, XFile::Scene* pData);

    // -------------------------------------------------------------------
    /** Recursively creates scene nodes from the imported hierarchy.
     * The meshes and materials of the nodes will be extracted on the way.
     * @param pScene The scene to construct the return data in.
     * @param pParent The parent node where to create new child nodes
     * @param pNode The temporary node to copy.
     * @return The created node
     */
    aiNode* CreateNodes( aiScene* pScene, aiNode* pParent,
        const XFile::Node* pNode);

    // -------------------------------------------------------------------
    /** Converts all meshes in the given mesh array. Each mesh is split
     * up per material, the indices of the generated meshes are stored in
     * the node structure.
     * @param pScene The scene to construct the return data in.
     * @param pNode The target node structure that references the
     *   constructed meshes.
     * @param pMeshes The array of meshes to convert
     */
    void CreateMeshes( aiScene* pScene, aiNode* pNode,
        const std::vector<XFile::Mesh*>& pMeshes);

    // -------------------------------------------------------------------
    /** Converts the animations from the given imported data and creates
    *  them in the scene.
     * @param pScene The scene to hold to converted animations
     * @param pData The data to read the animations from
     */
    void CreateAnimations( aiScene* pScene, const XFile::Scene* pData);

    // -------------------------------------------------------------------
    /** Converts all materials in the given array and stores them in the
     *  scene's material list.
     * @param pScene The scene to hold the converted materials.
     * @param pMaterials The material array to convert.
     */
    void ConvertMaterials( aiScene* pScene, std::vector<XFile::Material>& pMaterials);

protected:
    /// Buffer to hold the loaded file
    std::vector<char> mBuffer;
};

} // end of namespace Assimp

#endif // AI_BASEIMPORTER_H_INC