/*

Open Asset Import Library (assimp)

----------------------------------------------------------------------

Copyright (c) 2006-2025, assimp team

All rights reserved.

Redistribution and use of this software in source and binary forms,

with or without modification, are permitted provided that the

following conditions are met:

* Redistributions of source code must retain the above

  copyright notice, this list of conditions and the

  following disclaimer.

* Redistributions in binary form must reproduce the above

  copyright notice, this list of conditions and the

  following disclaimer in the documentation and/or other

  materials provided with the distribution.

* Neither the name of the assimp team, nor the names of its

  contributors may be used to endorse or promote products

  derived from this software without specific prior

  written permission of the assimp team.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

----------------------------------------------------------------------

*/

/** @file  DXFLoader.h

 *  @brief Declaration of the .dxf importer class.

 */

#pragma once

#ifndef AI_DXFLOADER_H_INCLUDED

#define AI_DXFLOADER_H_INCLUDED

#include <assimp/BaseImporter.h>

#include <map>

namespace Assimp {

// Forward declarations

namespace DXF {

    class LineReader;

    struct FileData;

    struct PolyLine;

    struct Block;

    struct InsertBlock;

    using BlockMap = std::map<std::string, const DXF::Block*>;

}

// ---------------------------------------------------------------------------

/**

 *  @brief  DXF importer implementation.

 */

class DXFImporter final : public BaseImporter {

public:

    DXFImporter() = default;

    ~DXFImporter() 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;

private:

    // -----------------------------------------------------

    void SkipSection(DXF::LineReader& reader);

    // -----------------------------------------------------

    void ParseHeader(DXF::LineReader& reader,

        DXF::FileData& output);

    // -----------------------------------------------------

    void ParseEntities(DXF::LineReader& reader,

        DXF::FileData& output);

    // -----------------------------------------------------

    void ParseBlocks(DXF::LineReader& reader,

        DXF::FileData& output);

    // -----------------------------------------------------

    void ParseBlock(DXF::LineReader& reader,

        DXF::FileData& output);

    // -----------------------------------------------------

    void ParseInsertion(DXF::LineReader& reader,

        DXF::FileData& output);

    // -----------------------------------------------------

    void ParsePolyLine(DXF::LineReader& reader,

        DXF::FileData& output);

    // -----------------------------------------------------

    void ParsePolyLineVertex(DXF::LineReader& reader,

        DXF::PolyLine& line);

    // -----------------------------------------------------

    void Parse3DFace(DXF::LineReader& reader,

        DXF::FileData& output);

    // -----------------------------------------------------

    void ConvertMeshes(aiScene* pScene,

        DXF::FileData& output);

    // -----------------------------------------------------

    void GenerateHierarchy(aiScene* pScene,

        DXF::FileData& output);

    // -----------------------------------------------------

    void GenerateMaterials(aiScene* pScene,

        DXF::FileData& output);

    // -----------------------------------------------------

    void ExpandBlockReferences(DXF::Block& bl,

        const DXF::BlockMap& blocks_by_name);

};

} // end of namespace Assimp

#endif // AI_3DSIMPORTER_H_INC