/*

Open Asset Import Library (assimp)

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

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All rights reserved.

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  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

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*/

/**

 * @file  MDLFileData.h

 * @brief Definition of in-memory structures for the MDL file format.

 *

 * The specification has been taken from various sources on the internet.

 * - http://tfc.duke.free.fr/coding/mdl-specs-en.html

 * - Conitec's MED SDK

 * - Many quite long HEX-editor sessions

 */

#ifndef AI_MDLFILEHELPER_H_INC

#define AI_MDLFILEHELPER_H_INC

#include <assimp/anim.h>

#include <assimp/mesh.h>

#include <assimp/Compiler/pushpack1.h>

#include <assimp/ByteSwapper.h>

#include <stdint.h>

#include <vector>

struct aiMaterial;

namespace Assimp {

namespace MDL {

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

// to make it easier for us, we test the magic word against both "endiannesses"

// magic bytes used in Quake 1 MDL meshes

#define AI_MDL_MAGIC_NUMBER_BE  AI_MAKE_MAGIC("IDPO")

#define AI_MDL_MAGIC_NUMBER_LE  AI_MAKE_MAGIC("OPDI")

// magic bytes used in GameStudio A<very  low> MDL meshes

#define AI_MDL_MAGIC_NUMBER_BE_GS3  AI_MAKE_MAGIC("MDL2")

#define AI_MDL_MAGIC_NUMBER_LE_GS3  AI_MAKE_MAGIC("2LDM")

// magic bytes used in GameStudio A4 MDL meshes

#define AI_MDL_MAGIC_NUMBER_BE_GS4  AI_MAKE_MAGIC("MDL3")

#define AI_MDL_MAGIC_NUMBER_LE_GS4  AI_MAKE_MAGIC("3LDM")

// magic bytes used in GameStudio A5+ MDL meshes

#define AI_MDL_MAGIC_NUMBER_BE_GS5a AI_MAKE_MAGIC("MDL4")

#define AI_MDL_MAGIC_NUMBER_LE_GS5a AI_MAKE_MAGIC("4LDM")

#define AI_MDL_MAGIC_NUMBER_BE_GS5b AI_MAKE_MAGIC("MDL5")

#define AI_MDL_MAGIC_NUMBER_LE_GS5b AI_MAKE_MAGIC("5LDM")

// magic bytes used in GameStudio A7+ MDL meshes

#define AI_MDL_MAGIC_NUMBER_BE_GS7  AI_MAKE_MAGIC("MDL7")

#define AI_MDL_MAGIC_NUMBER_LE_GS7  AI_MAKE_MAGIC("7LDM")

// common limitations for Quake1 meshes. The loader does not check them,

// (however it warns) but models should not exceed these limits.

#if (!defined AI_MDL_VERSION)

#   define AI_MDL_VERSION               6

#endif

#if (!defined AI_MDL_MAX_FRAMES)

#   define AI_MDL_MAX_FRAMES            256

#endif

#if (!defined AI_MDL_MAX_UVS)

#   define AI_MDL_MAX_UVS               1024

#endif

#if (!defined AI_MDL_MAX_VERTS)

#   define AI_MDL_MAX_VERTS             1024

#endif

#if (!defined AI_MDL_MAX_TRIANGLES)

#   define AI_MDL_MAX_TRIANGLES         2048

#endif

// material key that is set for dummy materials that are

// just referencing another material

#if (!defined AI_MDL7_REFERRER_MATERIAL)

#   define AI_MDL7_REFERRER_MATERIAL "&&&referrer&&&",0,0

#endif

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

/** \struct Header

 *  \brief Data structure for the MDL main header

 */

struct Header {

    //! magic number: "IDPO"

    uint32_t ident;

    //! version number: 6

    int32_t version;

    //! scale factors for each axis

    ai_real scale[3];

    //! translation factors for each axis

    ai_real translate[3];

    //! bounding radius of the mesh

    float boundingradius;

    //! Position of the viewer's exe. Ignored

    ai_real vEyePos[3];

    //! Number of textures

    int32_t num_skins;

    //! Texture width in pixels

    int32_t skinwidth;

    //! Texture height in pixels

    int32_t skinheight;

    //! Number of vertices contained in the file

    int32_t num_verts;

    //! Number of triangles contained in the file

    int32_t num_tris;

    //! Number of frames contained in the file

    int32_t num_frames;

    //! 0 = synchron, 1 = random . Ignored

    //! (MDLn formats: number of texture coordinates)

    int32_t synctype;

    //! State flag

    int32_t flags;

    //! Could be the total size of the file (and not a float)

    float size;

} PACK_STRUCT;

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

/** \struct Header_MDL7

 *  \brief Data structure for the MDL 7 main header

 */

struct Header_MDL7 {

    //! magic number: "MDL7"

    char    ident[4];

    //! Version number. Ignored

    int32_t version;

    //! Number of bones in file

    uint32_t    bones_num;

    //! Number of groups in file

    uint32_t    groups_num;

    //! Size of data in the file

    uint32_t    data_size;

    //! Ignored. Used to store entity specific information

    int32_t entlump_size;

    //! Ignored. Used to store MED related data

    int32_t medlump_size;

    //! Size of the Bone_MDL7 data structure used in the file

    uint16_t bone_stc_size;

    //! Size of the Skin_MDL 7 data structure used in the file

    uint16_t skin_stc_size;

    //! Size of a single color (e.g. in a material)

    uint16_t colorvalue_stc_size;

    //! Size of the Material_MDL7 data structure used in the file

    uint16_t material_stc_size;

    //! Size of a texture coordinate set in the file

    uint16_t skinpoint_stc_size;

    //! Size of a triangle in the file

    uint16_t triangle_stc_size;

    //! Size of a normal vertex in the file

    uint16_t mainvertex_stc_size;

    //! Size of a per-frame animated vertex in the file

    //! (this is not supported)

    uint16_t framevertex_stc_size;

    //! Size of a bone animation matrix

    uint16_t bonetrans_stc_size;

    //! Size of the Frame_MDL7 data structure used in the file

    uint16_t frame_stc_size;

} PACK_STRUCT;

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

/** \struct Bone_MDL7

 *  \brief Data structure for a bone in a MDL7 file

 */

struct Bone_MDL7 {

    //! Index of the parent bone of *this* bone. 0xffff means:

    //! "hey, I have no parent, I'm an orphan"

    uint16_t parent_index;

    uint8_t _unused_[2];

    //! Relative position of the bone (relative to the

    //! parent bone)

    float x,y,z;

    //! Optional name of the bone

    char name[1 /* DUMMY SIZE */];

} PACK_STRUCT;

#if (!defined AI_MDL7_BONE_STRUCT_SIZE__NAME_IS_20_CHARS)

#   define AI_MDL7_BONE_STRUCT_SIZE__NAME_IS_20_CHARS (16 + 20)

#endif

#if (!defined AI_MDL7_BONE_STRUCT_SIZE__NAME_IS_32_CHARS)

#   define AI_MDL7_BONE_STRUCT_SIZE__NAME_IS_32_CHARS (16 + 32)

#endif

#if (!defined AI_MDL7_BONE_STRUCT_SIZE__NAME_IS_NOT_THERE)

#   define AI_MDL7_BONE_STRUCT_SIZE__NAME_IS_NOT_THERE (16)

#endif

#if (!defined AI_MDL7_MAX_GROUPNAMESIZE)

#   define AI_MDL7_MAX_GROUPNAMESIZE    16

#endif // ! AI_MDL7_MAX_GROUPNAMESIZE

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

/** \struct Group_MDL7

 *  \brief Group in a MDL7 file

 */

struct Group_MDL7 {

    //! = '1' -> triangle based Mesh

    unsigned char   typ;

    int8_t  deformers;

    int8_t  max_weights;

    int8_t  _unused_;

    //! size of data for this group in bytes ( MD7_GROUP stc. included).

    int32_t groupdata_size;

    char    name[AI_MDL7_MAX_GROUPNAMESIZE];

    //! Number of skins

    int32_t numskins;

    //! Number of texture coordinates

    int32_t num_stpts;

    //! Number of triangles

    int32_t numtris;

    //! Number of vertices

    int32_t numverts;

    //! Number of frames

    int32_t numframes;

} PACK_STRUCT;

#define AI_MDL7_SKINTYPE_MIPFLAG                0x08

#define AI_MDL7_SKINTYPE_MATERIAL               0x10

#define AI_MDL7_SKINTYPE_MATERIAL_ASCDEF        0x20

#define AI_MDL7_SKINTYPE_RGBFLAG                0x80

#if (!defined AI_MDL7_MAX_BONENAMESIZE)

#   define AI_MDL7_MAX_BONENAMESIZE 20

#endif // !! AI_MDL7_MAX_BONENAMESIZE

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

/** \struct Deformer_MDL7

 *  \brief Deformer in a MDL7 file

 */

struct Deformer_MDL7 {

    int8_t  deformer_version;       // 0

    int8_t  deformer_typ;           // 0 - bones

    int8_t  _unused_[2];

    int32_t group_index;

    int32_t elements;

    int32_t deformerdata_size;

} PACK_STRUCT;

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

/** \struct DeformerElement_MDL7

 *  \brief Deformer element in a MDL7 file

 */

struct DeformerElement_MDL7 {

    //! bei deformer_typ==0 (==bones) element_index == bone index

    int32_t element_index;

    char    element_name[AI_MDL7_MAX_BONENAMESIZE];

    int32_t weights;

} PACK_STRUCT;

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

/** \struct DeformerWeight_MDL7

 *  \brief Deformer weight in a MDL7 file

 */

struct DeformerWeight_MDL7 {

    //! for deformer_typ==0 (==bones) index == vertex index

    int32_t index;

    float   weight;

} PACK_STRUCT;

// don't know why this was in the original headers ...

typedef int32_t MD7_MATERIAL_ASCDEFSIZE;

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

/** \struct ColorValue_MDL7

 *  \brief Data structure for a color value in a MDL7 file

 */

struct ColorValue_MDL7 {

    float r,g,b,a;

} PACK_STRUCT;

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

/** \struct Material_MDL7

 *  \brief Data structure for a Material in a MDL7 file

 */

struct Material_MDL7 {

    //! Diffuse base color of the material

    ColorValue_MDL7 Diffuse;

    //! Ambient base color of the material

    ColorValue_MDL7 Ambient;

    //! Specular base color of the material

    ColorValue_MDL7 Specular;

    //! Emissive base color of the material

    ColorValue_MDL7 Emissive;

    //! Phong power

    float           Power;

} PACK_STRUCT;

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

/** \struct Skin

 *  \brief Skin data structure #1 - used by Quake1, MDL2, MDL3 and MDL4

 */

struct Skin {

    //! 0 = single (Skin), 1 = group (GroupSkin)

    //! For MDL3-5: Defines the type of the skin and there

    //! fore the size of the data to skip:

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

    //! 2 for 565 RGB,

    //! 3 for 4444 ARGB,

    //! 10 for 565 mipmapped,

    //! 11 for 4444 mipmapped (bpp = 2),

    //! 12 for 888 RGB mipmapped (bpp = 3),

    //! 13 for 8888 ARGB mipmapped (bpp = 4)

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

    int32_t group;

    //! Texture data

    uint8_t *data;

} PACK_STRUCT;

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

/** \struct Skin

 *  \brief Skin data structure #2 - used by MDL5, MDL6 and MDL7

 *  \see Skin

 */

struct Skin_MDL5 {

    int32_t size, width, height;

    uint8_t *data;

} PACK_STRUCT;

// maximum length of texture file name

#if (!defined AI_MDL7_MAX_TEXNAMESIZE)

#   define AI_MDL7_MAX_TEXNAMESIZE      0x10

#endif

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

/** \struct Skin_MDL7

 *  \brief Skin data structure #3 - used by MDL7 and HMP7

 */

struct Skin_MDL7 {

    uint8_t         typ;

    int8_t          _unused_[3];

    int32_t         width;

    int32_t         height;

    char            texture_name[AI_MDL7_MAX_TEXNAMESIZE];

} PACK_STRUCT;

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

/** \struct RGB565

 *  \brief Data structure for a RGB565 pixel in a texture

 */

struct RGB565 {

    uint16_t r : 5;

    uint16_t g : 6;

    uint16_t b : 5;

} PACK_STRUCT;

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

/** \struct ARGB4

 *  \brief Data structure for a ARGB4444 pixel in a texture

 */

struct ARGB4 {

    uint16_t a : 4;

    uint16_t r : 4;

    uint16_t g : 4;

    uint16_t b : 4;

} /*PACK_STRUCT*/;

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

/** \struct GroupSkin

 *  \brief Skin data structure #2 (group of pictures)

 */

struct GroupSkin {

    //! 0 = single (Skin), 1 = group (GroupSkin)

    int32_t group;

    //! Number of images

    int32_t nb;

    //! Time for each image

    float *time;

    //! Data of each image

    uint8_t **data;

} PACK_STRUCT;

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

/** \struct TexCoord

 *  \brief Texture coordinate data structure used by the Quake1 MDL format

 */

struct TexCoord {

    //! Is the vertex on the noundary between front and back piece?

    int32_t onseam;

    //! Texture coordinate in the tx direction

    int32_t s;

    //! Texture coordinate in the ty direction

    int32_t t;

} PACK_STRUCT;

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

/** \struct TexCoord_MDL3

 *  \brief Data structure for an UV coordinate in the 3DGS MDL3 format

 */

struct TexCoord_MDL3 {

    //! position, horizontally in range 0..skinwidth-1

    int16_t u;

    //! position, vertically in range 0..skinheight-1

    int16_t v;

} PACK_STRUCT;

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

/** \struct TexCoord_MDL7

 *  \brief Data structure for an UV coordinate in the 3DGS MDL7 format

 */

struct TexCoord_MDL7 {

    //! position, horizontally in range 0..1

    float u;

    //! position, vertically in range 0..1

    float v;

} PACK_STRUCT;

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

/** \struct SkinSet_MDL7

 *  \brief Skin set data structure for the 3DGS MDL7 format

 * MDL7 references UV coordinates per face via an index list.

 * This allows the use of multiple skins per face with just one

 * UV coordinate set.

 */

struct SkinSet_MDL7

{

    //! Index into the UV coordinate list

    uint16_t    st_index[3]; // size 6

    //! Material index

    int32_t     material;    // size 4

} PACK_STRUCT;

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

/** \struct Triangle

 *  \brief Triangle data structure for the Quake1 MDL format

 */

struct Triangle

{

    //! 0 = backface, 1 = frontface

    int32_t facesfront;

    //! Vertex indices

    int32_t vertex[3];

} PACK_STRUCT;

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

/** \struct Triangle_MDL3

 *  \brief Triangle data structure for the 3DGS MDL3 format

 */

struct Triangle_MDL3

{

    //!  Index of 3 3D vertices in range 0..numverts

    uint16_t index_xyz[3];

    //! Index of 3 skin vertices in range 0..numskinverts

    uint16_t index_uv[3];

} PACK_STRUCT;

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

/** \struct Triangle_MDL7

 *  \brief Triangle data structure for the 3DGS MDL7 format

 */

struct Triangle_MDL7

{

    //! Vertex indices

    uint16_t   v_index[3];  // size 6

    //! Two skinsets. The second will be used for multi-texturing

    SkinSet_MDL7  skinsets[2];

} PACK_STRUCT;

#if (!defined AI_MDL7_TRIANGLE_STD_SIZE_ONE_UV)

#   define AI_MDL7_TRIANGLE_STD_SIZE_ONE_UV (6+sizeof(SkinSet_MDL7)-sizeof(uint32_t))

#endif

#if (!defined AI_MDL7_TRIANGLE_STD_SIZE_ONE_UV_WITH_MATINDEX)

#   define AI_MDL7_TRIANGLE_STD_SIZE_ONE_UV_WITH_MATINDEX (6+sizeof(SkinSet_MDL7))

#endif

#if (!defined AI_MDL7_TRIANGLE_STD_SIZE_TWO_UV)

#   define AI_MDL7_TRIANGLE_STD_SIZE_TWO_UV (6+2*sizeof(SkinSet_MDL7))

#endif

// Helper constants for Triangle::facesfront

#if (!defined AI_MDL_BACKFACE)

#   define AI_MDL_BACKFACE          0x0

#endif

#if (!defined  AI_MDL_FRONTFACE)

#   define AI_MDL_FRONTFACE         0x1

#endif

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

/** \struct Vertex

 *  \brief Vertex data structure

 */

struct Vertex

{

    uint8_t v[3];

    uint8_t normalIndex;

} PACK_STRUCT;

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

struct Vertex_MDL4

{

    uint16_t v[3];

    uint8_t normalIndex;

    uint8_t unused;

} PACK_STRUCT;

#define AI_MDL7_FRAMEVERTEX120503_STCSIZE       16

#define AI_MDL7_FRAMEVERTEX030305_STCSIZE       26

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

/** \struct Vertex_MDL7

 *  \brief Vertex data structure used in MDL7 files

 */

struct Vertex_MDL7

{

    float   x,y,z;

    uint16_t vertindex; // = bone index

    union {

        uint8_t norm162index;

        float norm[3];

    } PACK_STRUCT;

} PACK_STRUCT;

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

/** \struct BoneTransform_MDL7

 *  \brief bone transformation matrix structure used in MDL7 files

 */

struct BoneTransform_MDL7

{

    //! 4*3

    float   m [4*4];

    //! the index of this vertex, 0.. header::bones_num - 1

    uint16_t bone_index;

    //! I HATE 3DGS AND THE SILLY DEVELOPER WHO DESIGNED

    //! THIS STUPID FILE FORMAT!

    int8_t _unused_[2];

} PACK_STRUCT;

#define AI_MDL7_MAX_FRAMENAMESIZE       16

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

/** \struct Frame_MDL7

 *  \brief Frame data structure used by MDL7 files

 */

struct Frame_MDL7

{

    char    frame_name[AI_MDL7_MAX_FRAMENAMESIZE];

    uint32_t    vertices_count;

    uint32_t    transmatrix_count;

};

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

/** \struct SimpleFrame

 *  \brief Data structure for a simple frame

 */

struct SimpleFrame

{

    //! Minimum vertex of the bounding box

    Vertex bboxmin;

    //! Maximum vertex of the bounding box

    Vertex bboxmax;

    //! Name of the frame

    char name[16];

    //! Vertex list of the frame

    Vertex *verts;

} PACK_STRUCT;

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

/** \struct Frame

 *  \brief Model frame data structure

 */

struct Frame

{

    //! 0 = simple frame, !0 = group frame

    int32_t type;

    //! Frame data

    SimpleFrame frame;

} PACK_STRUCT;

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

struct SimpleFrame_MDLn_SP

{

    //! Minimum vertex of the bounding box

    Vertex_MDL4 bboxmin;

    //! Maximum vertex of the bounding box

    Vertex_MDL4 bboxmax;

    //! Name of the frame

    char name[16];

    //! Vertex list of the frame

    Vertex_MDL4 *verts;

} PACK_STRUCT;

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

/** \struct GroupFrame

 *  \brief Data structure for a group of frames

 */

struct GroupFrame

{

    //! 0 = simple frame, !0 = group frame

    int32_t type;

    int32_t numframes;

    //! Minimum vertex for all single frames

    Vertex min;

    //! Maximum vertex for all single frames

    Vertex max;

    //! List of times for all single frames

    float *times;

    //! List of single frames

    SimpleFrame *frames;

} PACK_STRUCT;

#include <assimp/Compiler/poppack1.h>

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

/** \struct IntFace_MDL7

 *  \brief Internal data structure to temporarily represent a face

 */

struct IntFace_MDL7 {

    // provide a constructor for our own convenience

    IntFace_MDL7() AI_NO_EXCEPT {

        ::memset( mIndices, 0, sizeof(uint32_t) *3);

        ::memset( iMatIndex, 0, sizeof( unsigned int) *2);

    }

    //! Vertex indices

    uint32_t mIndices[3];

    //! Material index (maximally two channels, which are joined later)

    unsigned int iMatIndex[2];

};

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

/** \struct IntMaterial_MDL7

 *  \brief Internal data structure to temporarily represent a material

 *  which has been created from two single materials along with the

 *  original material indices.

 */

struct IntMaterial_MDL7 {

    // provide a constructor for our own convenience

    IntMaterial_MDL7() AI_NO_EXCEPT

    : pcMat( nullptr ) {

        ::memset( iOldMatIndices, 0, sizeof(unsigned int) *2);

    }

    //! Material instance

    aiMaterial* pcMat;

    //! Old material indices

    unsigned int iOldMatIndices[2];

};

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

/** \struct IntBone_MDL7

 *  \brief Internal data structure to represent a bone in a MDL7 file with

 *  all of its animation channels assigned to it.

 */

struct IntBone_MDL7 : aiBone

{

    //! Default constructor

    IntBone_MDL7() AI_NO_EXCEPT : iParent (0xffff)

    {

        pkeyPositions.reserve(30);

        pkeyScalings.reserve(30);

        pkeyRotations.reserve(30);

    }

    //! Parent bone of the bone

    uint64_t iParent;

    //! Relative position of the bone

    aiVector3D vPosition;

    //! Array of position keys

    std::vector<aiVectorKey> pkeyPositions;

    //! Array of scaling keys

    std::vector<aiVectorKey> pkeyScalings;

    //! Array of rotation keys

    std::vector<aiQuatKey> pkeyRotations;

};

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

//! Describes a MDL7 frame

struct IntFrameInfo_MDL7

{

    //! Construction from an existing frame header

    IntFrameInfo_MDL7(BE_NCONST MDL::Frame_MDL7* _pcFrame,unsigned int _iIndex)

        : iIndex(_iIndex)

        , pcFrame(_pcFrame)

    {}

    //! Index of the frame

    unsigned int iIndex;

    //! Points to the header of the frame

    BE_NCONST MDL::Frame_MDL7*  pcFrame;

};

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

//! Describes a MDL7 mesh group

struct IntGroupInfo_MDL7

{

    //! Default constructor

    IntGroupInfo_MDL7() AI_NO_EXCEPT

        :   iIndex(0)

        ,   pcGroup(nullptr)

        ,   pcGroupUVs(nullptr)

        ,   pcGroupTris(nullptr)

        ,   pcGroupVerts(nullptr)

        {}

    //! Construction from an existing group header

    IntGroupInfo_MDL7(BE_NCONST MDL::Group_MDL7* _pcGroup, unsigned int _iIndex)

        :   iIndex(_iIndex)

        ,   pcGroup(_pcGroup)

        ,   pcGroupUVs()

        ,   pcGroupTris()

        ,   pcGroupVerts()

    {}

    //! Index of the group

    unsigned int iIndex;

    //! Points to the header of the group

    BE_NCONST MDL::Group_MDL7*      pcGroup;

    //! Points to the beginning of the uv coordinate section

    BE_NCONST MDL::TexCoord_MDL7*   pcGroupUVs;

    //! Points to the beginning of the triangle section

    MDL::Triangle_MDL7* pcGroupTris;

    //! Points to the beginning of the vertex section

    BE_NCONST MDL::Vertex_MDL7*     pcGroupVerts;

};

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

//! Holds the data that belongs to a MDL7 mesh group

struct IntGroupData_MDL7

{

    IntGroupData_MDL7() AI_NO_EXCEPT

        : bNeed2UV(false)

    {}

    //! Array of faces that belong to the group

    std::vector<MDL::IntFace_MDL7> pcFaces;

    //! Array of vertex positions

    std::vector<aiVector3D>     vPositions;

    //! Array of vertex normals

    std::vector<aiVector3D>     vNormals;

    //! Array of bones indices

    std::vector<unsigned int>   aiBones;

    //! First UV coordinate set

    std::vector<aiVector3D>     vTextureCoords1;

    //! Optional second UV coordinate set

    std::vector<aiVector3D>     vTextureCoords2;

    //! Specifies whether there are two texture

    //! coordinate sets required

    bool bNeed2UV;

};

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

//! Holds data from an MDL7 file that is shared by all mesh groups

struct IntSharedData_MDL7 {

    //! Default constructor

    IntSharedData_MDL7() AI_NO_EXCEPT

        : apcOutBones(),

        iNum()

    {

        abNeedMaterials.reserve(12);

    }

    //! Destruction: properly delete all allocated resources

    ~IntSharedData_MDL7()

    {

        // kill all bones

        if (this->apcOutBones)

        {

            for (unsigned int m = 0; m < iNum;++m)

                delete this->apcOutBones[m];

            delete[] this->apcOutBones;

        }

    }

    //! Specifies which materials are used

    std::vector<bool> abNeedMaterials;

    //! List of all materials

    std::vector<aiMaterial*> pcMats;

    //! List of all bones

    IntBone_MDL7** apcOutBones;

    //! number of bones

    unsigned int iNum;

};

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

//! Contains input data for GenerateOutputMeshes_3DGS_MDL7

struct IntSplitGroupData_MDL7

{

    //! Construction from a given shared data set

    IntSplitGroupData_MDL7(IntSharedData_MDL7& _shared,

        std::vector<aiMesh*>& _avOutList)

        : aiSplit(), shared(_shared), avOutList(_avOutList)

    {

    }

    //! Destruction: properly delete all allocated resources

    ~IntSplitGroupData_MDL7()

    {

        // kill all face lists

        if(this->aiSplit)

        {

            for (unsigned int m = 0; m < shared.pcMats.size();++m)

                delete this->aiSplit[m];

            delete[] this->aiSplit;

        }

    }

    //! Contains a list of all faces per material

    std::vector<unsigned int>** aiSplit;

    //! Shared data for all groups of the model

    IntSharedData_MDL7& shared;

    //! List of meshes

    std::vector<aiMesh*>& avOutList;

};

}

} // end namespaces

#endif // !! AI_MDLFILEHELPER_H_INC