assimp/code/LWOFileData.h

/*
Open Asset Import Library (assimp)
----------------------------------------------------------------------

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  following disclaimer.

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*/

/** @file LWOFileData.h
 *  @brief Defines chunk constants used by the LWO file format

The chunks are taken from the official LightWave SDK headers.

*/
#ifndef AI_LWO_FILEDATA_INCLUDED
#define AI_LWO_FILEDATA_INCLUDED

// STL headers
#include <vector>
#include <list>

// public ASSIMP headers
#include <assimp/mesh.h>

// internal headers
#include "IFF.h"
#include "LWOAnimation.h"

namespace Assimp {
namespace LWO {

#define AI_LWO_FOURCC_LWOB AI_IFF_FOURCC('L','W','O','B')
#define AI_LWO_FOURCC_LWO2 AI_IFF_FOURCC('L','W','O','2')
#define AI_LWO_FOURCC_LXOB AI_IFF_FOURCC('L','X','O','B')

// chunks specific to the LWOB format
#define AI_LWO_SRFS  AI_IFF_FOURCC('S','R','F','S')
#define AI_LWO_FLAG  AI_IFF_FOURCC('F','L','A','G')
#define AI_LWO_VLUM  AI_IFF_FOURCC('V','L','U','M')
#define AI_LWO_VDIF  AI_IFF_FOURCC('V','D','I','F')
#define AI_LWO_VSPC  AI_IFF_FOURCC('V','S','P','C')
#define AI_LWO_RFLT  AI_IFF_FOURCC('R','F','L','T')
#define AI_LWO_BTEX  AI_IFF_FOURCC('B','T','E','X')
#define AI_LWO_CTEX  AI_IFF_FOURCC('C','T','E','X')
#define AI_LWO_DTEX  AI_IFF_FOURCC('D','T','E','X')
#define AI_LWO_LTEX  AI_IFF_FOURCC('L','T','E','X')
#define AI_LWO_RTEX  AI_IFF_FOURCC('R','T','E','X')
#define AI_LWO_STEX  AI_IFF_FOURCC('S','T','E','X')
#define AI_LWO_TTEX  AI_IFF_FOURCC('T','T','E','X')
#define AI_LWO_TFLG  AI_IFF_FOURCC('T','F','L','G')
#define AI_LWO_TSIZ  AI_IFF_FOURCC('T','S','I','Z')
#define AI_LWO_TCTR  AI_IFF_FOURCC('T','C','T','R')
#define AI_LWO_TFAL  AI_IFF_FOURCC('T','F','A','L')
#define AI_LWO_TVEL  AI_IFF_FOURCC('T','V','E','L')
#define AI_LWO_TCLR  AI_IFF_FOURCC('T','C','L','R')
#define AI_LWO_TVAL  AI_IFF_FOURCC('T','V','A','L')
#define AI_LWO_TAMP  AI_IFF_FOURCC('T','A','M','P')
#define AI_LWO_TIMG  AI_IFF_FOURCC('T','I','M','G')
#define AI_LWO_TAAS  AI_IFF_FOURCC('T','A','A','S')
#define AI_LWO_TREF  AI_IFF_FOURCC('T','R','E','F')
#define AI_LWO_TOPC  AI_IFF_FOURCC('T','O','P','C')
#define AI_LWO_SDAT  AI_IFF_FOURCC('S','D','A','T')
#define AI_LWO_TFP0  AI_IFF_FOURCC('T','F','P','0')
#define AI_LWO_TFP1  AI_IFF_FOURCC('T','F','P','1')


/* top-level chunks */
#define AI_LWO_LAYR  AI_IFF_FOURCC('L','A','Y','R')
#define AI_LWO_TAGS  AI_IFF_FOURCC('T','A','G','S')
#define AI_LWO_PNTS  AI_IFF_FOURCC('P','N','T','S')
#define AI_LWO_BBOX  AI_IFF_FOURCC('B','B','O','X')
#define AI_LWO_VMAP  AI_IFF_FOURCC('V','M','A','P')
#define AI_LWO_VMAD  AI_IFF_FOURCC('V','M','A','D')
#define AI_LWO_POLS  AI_IFF_FOURCC('P','O','L','S')
#define AI_LWO_PTAG  AI_IFF_FOURCC('P','T','A','G')
#define AI_LWO_ENVL  AI_IFF_FOURCC('E','N','V','L')
#define AI_LWO_CLIP  AI_IFF_FOURCC('C','L','I','P')
#define AI_LWO_SURF  AI_IFF_FOURCC('S','U','R','F')
#define AI_LWO_DESC  AI_IFF_FOURCC('D','E','S','C')
#define AI_LWO_TEXT  AI_IFF_FOURCC('T','E','X','T')
#define AI_LWO_ICON  AI_IFF_FOURCC('I','C','O','N')

/* polygon types */
#define AI_LWO_FACE  AI_IFF_FOURCC('F','A','C','E')
#define AI_LWO_CURV  AI_IFF_FOURCC('C','U','R','V')
#define AI_LWO_PTCH  AI_IFF_FOURCC('P','T','C','H')
#define AI_LWO_MBAL  AI_IFF_FOURCC('M','B','A','L')
#define AI_LWO_BONE  AI_IFF_FOURCC('B','O','N','E')
#define AI_LWO_SUBD  AI_IFF_FOURCC('S','U','B','D')

/* polygon tags */
#define AI_LWO_SURF  AI_IFF_FOURCC('S','U','R','F')
#define AI_LWO_PART  AI_IFF_FOURCC('P','A','R','T')
#define AI_LWO_SMGP  AI_IFF_FOURCC('S','M','G','P')

/* envelopes */
#define AI_LWO_PRE   AI_IFF_FOURCC('P','R','E',' ')
#define AI_LWO_POST  AI_IFF_FOURCC('P','O','S','T')
#define AI_LWO_KEY   AI_IFF_FOURCC('K','E','Y',' ')
#define AI_LWO_SPAN  AI_IFF_FOURCC('S','P','A','N')
#define AI_LWO_TCB   AI_IFF_FOURCC('T','C','B',' ')
#define AI_LWO_HERM  AI_IFF_FOURCC('H','E','R','M')
#define AI_LWO_BEZI  AI_IFF_FOURCC('B','E','Z','I')
#define AI_LWO_BEZ2  AI_IFF_FOURCC('B','E','Z','2')
#define AI_LWO_LINE  AI_IFF_FOURCC('L','I','N','E')
#define AI_LWO_STEP  AI_IFF_FOURCC('S','T','E','P')

/* clips */
#define AI_LWO_STIL  AI_IFF_FOURCC('S','T','I','L')
#define AI_LWO_ISEQ  AI_IFF_FOURCC('I','S','E','Q')
#define AI_LWO_ANIM  AI_IFF_FOURCC('A','N','I','M')
#define AI_LWO_XREF  AI_IFF_FOURCC('X','R','E','F')
#define AI_LWO_STCC  AI_IFF_FOURCC('S','T','C','C')
#define AI_LWO_TIME  AI_IFF_FOURCC('T','I','M','E')
#define AI_LWO_CONT  AI_IFF_FOURCC('C','O','N','T')
#define AI_LWO_BRIT  AI_IFF_FOURCC('B','R','I','T')
#define AI_LWO_SATR  AI_IFF_FOURCC('S','A','T','R')
#define AI_LWO_HUE   AI_IFF_FOURCC('H','U','E',' ')
#define AI_LWO_GAMM  AI_IFF_FOURCC('G','A','M','M')
#define AI_LWO_NEGA  AI_IFF_FOURCC('N','E','G','A')
#define AI_LWO_IFLT  AI_IFF_FOURCC('I','F','L','T')
#define AI_LWO_PFLT  AI_IFF_FOURCC('P','F','L','T')

/* surfaces */
#define AI_LWO_COLR  AI_IFF_FOURCC('C','O','L','R')
#define AI_LWO_LUMI  AI_IFF_FOURCC('L','U','M','I')
#define AI_LWO_DIFF  AI_IFF_FOURCC('D','I','F','F')
#define AI_LWO_SPEC  AI_IFF_FOURCC('S','P','E','C')
#define AI_LWO_GLOS  AI_IFF_FOURCC('G','L','O','S')
#define AI_LWO_REFL  AI_IFF_FOURCC('R','E','F','L')
#define AI_LWO_RFOP  AI_IFF_FOURCC('R','F','O','P')
#define AI_LWO_RIMG  AI_IFF_FOURCC('R','I','M','G')
#define AI_LWO_RSAN  AI_IFF_FOURCC('R','S','A','N')
#define AI_LWO_TRAN  AI_IFF_FOURCC('T','R','A','N')
#define AI_LWO_TROP  AI_IFF_FOURCC('T','R','O','P')
#define AI_LWO_TIMG  AI_IFF_FOURCC('T','I','M','G')
#define AI_LWO_RIND  AI_IFF_FOURCC('R','I','N','D')
#define AI_LWO_TRNL  AI_IFF_FOURCC('T','R','N','L')
#define AI_LWO_BUMP  AI_IFF_FOURCC('B','U','M','P')
#define AI_LWO_SMAN  AI_IFF_FOURCC('S','M','A','N')
#define AI_LWO_SIDE  AI_IFF_FOURCC('S','I','D','E')
#define AI_LWO_CLRH  AI_IFF_FOURCC('C','L','R','H')
#define AI_LWO_CLRF  AI_IFF_FOURCC('C','L','R','F')
#define AI_LWO_ADTR  AI_IFF_FOURCC('A','D','T','R')
#define AI_LWO_SHRP  AI_IFF_FOURCC('S','H','R','P')
#define AI_LWO_LINE  AI_IFF_FOURCC('L','I','N','E')
#define AI_LWO_LSIZ  AI_IFF_FOURCC('L','S','I','Z')
#define AI_LWO_ALPH  AI_IFF_FOURCC('A','L','P','H')
#define AI_LWO_AVAL  AI_IFF_FOURCC('A','V','A','L')
#define AI_LWO_GVAL  AI_IFF_FOURCC('G','V','A','L')
#define AI_LWO_BLOK  AI_IFF_FOURCC('B','L','O','K')
#define AI_LWO_VCOL  AI_IFF_FOURCC('V','C','O','L')

/* texture layer */
#define AI_LWO_TYPE  AI_IFF_FOURCC('T','Y','P','E')
#define AI_LWO_CHAN  AI_IFF_FOURCC('C','H','A','N')
#define AI_LWO_NAME  AI_IFF_FOURCC('N','A','M','E')
#define AI_LWO_ENAB  AI_IFF_FOURCC('E','N','A','B')
#define AI_LWO_OPAC  AI_IFF_FOURCC('O','P','A','C')
#define AI_LWO_FLAG  AI_IFF_FOURCC('F','L','A','G')
#define AI_LWO_PROJ  AI_IFF_FOURCC('P','R','O','J')
#define AI_LWO_STCK  AI_IFF_FOURCC('S','T','C','K')
#define AI_LWO_TAMP  AI_IFF_FOURCC('T','A','M','P')

/* texture coordinates */
#define AI_LWO_TMAP  AI_IFF_FOURCC('T','M','A','P')
#define AI_LWO_AXIS  AI_IFF_FOURCC('A','X','I','S')
#define AI_LWO_CNTR  AI_IFF_FOURCC('C','N','T','R')
#define AI_LWO_SIZE  AI_IFF_FOURCC('S','I','Z','E')
#define AI_LWO_ROTA  AI_IFF_FOURCC('R','O','T','A')
#define AI_LWO_OREF  AI_IFF_FOURCC('O','R','E','F')
#define AI_LWO_FALL  AI_IFF_FOURCC('F','A','L','L')
#define AI_LWO_CSYS  AI_IFF_FOURCC('C','S','Y','S')

/* image map */
#define AI_LWO_IMAP  AI_IFF_FOURCC('I','M','A','P')
#define AI_LWO_IMAG  AI_IFF_FOURCC('I','M','A','G')
#define AI_LWO_WRAP  AI_IFF_FOURCC('W','R','A','P')
#define AI_LWO_WRPW  AI_IFF_FOURCC('W','R','P','W')
#define AI_LWO_WRPH  AI_IFF_FOURCC('W','R','P','H')
#define AI_LWO_VMAP  AI_IFF_FOURCC('V','M','A','P')
#define AI_LWO_AAST  AI_IFF_FOURCC('A','A','S','T')
#define AI_LWO_PIXB  AI_IFF_FOURCC('P','I','X','B')

/* procedural */
#define AI_LWO_PROC  AI_IFF_FOURCC('P','R','O','C')
#define AI_LWO_COLR  AI_IFF_FOURCC('C','O','L','R')
#define AI_LWO_VALU  AI_IFF_FOURCC('V','A','L','U')
#define AI_LWO_FUNC  AI_IFF_FOURCC('F','U','N','C')
#define AI_LWO_FTPS  AI_IFF_FOURCC('F','T','P','S')
#define AI_LWO_ITPS  AI_IFF_FOURCC('I','T','P','S')
#define AI_LWO_ETPS  AI_IFF_FOURCC('E','T','P','S')

/* gradient */
#define AI_LWO_GRAD  AI_IFF_FOURCC('G','R','A','D')
#define AI_LWO_GRST  AI_IFF_FOURCC('G','R','S','T')
#define AI_LWO_GREN  AI_IFF_FOURCC('G','R','E','N')
#define AI_LWO_PNAM  AI_IFF_FOURCC('P','N','A','M')
#define AI_LWO_INAM  AI_IFF_FOURCC('I','N','A','M')
#define AI_LWO_GRPT  AI_IFF_FOURCC('G','R','P','T')
#define AI_LWO_FKEY  AI_IFF_FOURCC('F','K','E','Y')
#define AI_LWO_IKEY  AI_IFF_FOURCC('I','K','E','Y')

/* shader */
#define AI_LWO_SHDR  AI_IFF_FOURCC('S','H','D','R')
#define AI_LWO_DATA  AI_IFF_FOURCC('D','A','T','A')


/* VMAP types */
#define AI_LWO_TXUV  AI_IFF_FOURCC('T','X','U','V')
#define AI_LWO_RGB   AI_IFF_FOURCC('R','G','B',' ')
#define AI_LWO_RGBA  AI_IFF_FOURCC('R','G','B','A')
#define AI_LWO_WGHT  AI_IFF_FOURCC('W','G','H','T')

#define AI_LWO_MNVW  AI_IFF_FOURCC('M','N','V','W')
#define AI_LWO_MORF  AI_IFF_FOURCC('M','O','R','F')
#define AI_LWO_SPOT  AI_IFF_FOURCC('S','P','O','T')
#define AI_LWO_PICK  AI_IFF_FOURCC('P','I','C','K')

// MODO extension - per-vertex normal vectors
#define AI_LWO_MODO_NORM AI_IFF_FOURCC('N', 'O', 'R', 'M')


// ---------------------------------------------------------------------------
/** \brief Data structure for a face in a LWO file
 *
 * \note We can't use the code in SmoothingGroups.inl here - the mesh
 *   structures of 3DS/ASE and LWO are too different.
 */
struct Face : public aiFace {
    //! Default construction
    Face() AI_NO_EXCEPT
    : surfaceIndex( 0 )
    , smoothGroup( 0 )
    , type( AI_LWO_FACE ) {
        // empty
    }

    //! Construction from given type
    explicit Face(uint32_t _type)
        : surfaceIndex  (0)
        , smoothGroup   (0)
        , type          (_type)
    {}

    //! Copy construction
    Face(const Face& f) : aiFace() {
        *this = f;
    }

    //! Zero-based index into tags chunk
    unsigned int surfaceIndex;

    //! Smooth group this face is assigned to
    unsigned int smoothGroup;

    //! Type of face
    uint32_t type;


    //! Assignment operator
    Face& operator=(const LWO::Face& f) {
        aiFace::operator =(f);
        surfaceIndex    = f.surfaceIndex;
        smoothGroup     = f.smoothGroup;
        type            = f.type;
        return *this;
    }
};

// ---------------------------------------------------------------------------
/** \brief Base structure for all vertex map representations
 */
struct VMapEntry
{
    explicit VMapEntry(unsigned int _dims)
        :  dims(_dims)
    {}

    virtual ~VMapEntry() {}

    //! allocates memory for the vertex map
    virtual void Allocate(unsigned int num)
    {
        if (!rawData.empty())
            return; // return if already allocated

        const unsigned int m = num*dims;
        rawData.reserve(m + (m>>2u)); // 25% as  extra storage for VMADs
        rawData.resize(m,0.f);
        abAssigned.resize(num,false);
    }

    std::string name;
    unsigned int dims;

    std::vector<float> rawData;
    std::vector<bool> abAssigned;
};

// ---------------------------------------------------------------------------
/** \brief Represents an extra vertex color channel
 */
struct VColorChannel : public VMapEntry
{
    VColorChannel()
        : VMapEntry(4)
    {}

    //! need to overwrite this function - the alpha channel must
    //! be initialized to 1.0 by default
    virtual void Allocate(unsigned int num)
    {
        if (!rawData.empty())
            return; // return if already allocated

        unsigned int m = num*dims;
        rawData.reserve(m + (m>>2u)); // 25% as  extra storage for VMADs
        rawData.resize(m);

        for (aiColor4D* p = (aiColor4D*)&rawData[0]; p < (aiColor4D*)&rawData[m-1]; ++p)
            p->a = 1.f;

        abAssigned.resize(num,false);
    }
};

// ---------------------------------------------------------------------------
/** \brief Represents an extra vertex UV channel
 */
struct UVChannel : public VMapEntry
{
    UVChannel()
        : VMapEntry(2)
    {}
};

// ---------------------------------------------------------------------------
/** \brief Represents a weight map
 */
struct WeightChannel : public VMapEntry
{
    WeightChannel()
        : VMapEntry(1)
    {}
};

// ---------------------------------------------------------------------------
/** \brief Represents a vertex-normals channel (MODO extension)
 */
struct NormalChannel : public VMapEntry
{
    NormalChannel()
        : VMapEntry(3)
    {}
};

// ---------------------------------------------------------------------------
/** \brief Data structure for a LWO file texture
 */
struct Texture
{
    // we write the enum values out here to make debugging easier ...
    enum BlendType
    {
        Normal          = 0,
        Subtractive     = 1,
        Difference      = 2,
        Multiply        = 3,
        Divide          = 4,
        Alpha           = 5,
        TextureDispl    = 6,
        Additive        = 7
    };

    enum MappingMode
    {
        Planar          = 0,
        Cylindrical     = 1,
        Spherical       = 2,
        Cubic           = 3,
        FrontProjection = 4,
        UV              = 5
    };

    enum Axes
    {
        AXIS_X          = 0,
        AXIS_Y          = 1,
        AXIS_Z          = 2
    };

    enum Wrap
    {
        RESET           = 0,
        REPEAT          = 1,
        MIRROR          = 2,
        EDGE            = 3
    };

    Texture()
        : mClipIdx(UINT_MAX)
        , mStrength         (1.0f)
        , type()
        , mUVChannelIndex   ("unknown")
        , mRealUVIndex      (UINT_MAX)
        , enabled           (true)
        , blendType         (Additive)
        , bCanUse           (true)
        , mapMode           (UV)
        , majorAxis         (AXIS_X)
        , wrapAmountH       (1.0f)
        , wrapAmountW       (1.0f)
        , wrapModeWidth     (REPEAT)
        , wrapModeHeight    (REPEAT)
        , ordinal           ("\x00")
    {}

    //! File name of the texture
    std::string mFileName;

    //! Clip index
    unsigned int mClipIdx;

    //! Strength of the texture - blend factor
    float mStrength;

    uint32_t type; // type of the texture

    //! Name of the corresponding UV channel
    std::string mUVChannelIndex;
    unsigned int mRealUVIndex;

    //! is the texture enabled?
    bool enabled;

    //! blend type
    BlendType blendType;

    //! are we able to use the texture?
    bool bCanUse;

    //! mapping mode
    MappingMode mapMode;

    //! major axis for planar, cylindrical, spherical projections
    Axes majorAxis;

    //! wrap amount for cylindrical and spherical projections
    float wrapAmountH,wrapAmountW;

    //! wrapping mode for the texture
    Wrap wrapModeWidth,wrapModeHeight;

    //! ordinal string of the texture
    std::string ordinal;
};

// ---------------------------------------------------------------------------
/** \brief Data structure for a LWO file clip
 */
struct Clip
{
    enum Type
    {
         STILL, SEQ, REF, UNSUPPORTED
    } type;

    Clip()
        : type   (UNSUPPORTED)
        , clipRef()
        , idx    (0)
        , negate (false)
    {}

    //! path to the base texture -
    std::string path;

    //! reference to another CLIP
    unsigned int clipRef;

    //! index of the clip
    unsigned int idx;

    //! Negate the clip?
    bool negate;
};


// ---------------------------------------------------------------------------
/** \brief Data structure for a LWO file shader
 *
 *  Later
 */
struct Shader
{
    Shader()
        :   ordinal         ("\x00")
        ,   functionName    ("unknown")
        ,   enabled         (true)
    {}

    std::string ordinal;
    std::string functionName;
    bool enabled;
};

typedef std::list < Texture >       TextureList;
typedef std::list < Shader >        ShaderList;

// ---------------------------------------------------------------------------
/** \brief Data structure for a LWO file surface (= material)
 */
struct Surface
{
    Surface()
        : mColor                (0.78431f,0.78431f,0.78431f)
        , bDoubleSided          (false)
        , mDiffuseValue         (1.f)
        , mSpecularValue        (0.f)
        , mTransparency         (0.f)
        , mGlossiness           (0.4f)
        , mLuminosity           (0.f)
        , mColorHighlights      (0.f)
        , mMaximumSmoothAngle   (0.f) // 0 == not specified, no smoothing
        , mVCMap                ("")
        , mVCMapType            (AI_LWO_RGBA)
        , mIOR                  (1.f) // vakuum
        , mBumpIntensity        (1.f)
        , mWireframe            (false)
        , mAdditiveTransparency (0.f)
    {}

    //! Name of the surface
    std::string mName;

    //! Color of the surface
    aiColor3D mColor;

    //! true for two-sided materials
    bool bDoubleSided;

    //! Various material parameters
    float mDiffuseValue,mSpecularValue,mTransparency,mGlossiness,mLuminosity,mColorHighlights;

    //! Maximum angle between two adjacent triangles
    //! that they can be smoothed - in degrees
    float mMaximumSmoothAngle;

    //! Vertex color map to be used to color the surface
    std::string mVCMap;
    uint32_t mVCMapType;

    //! Names of the special shaders to be applied to the surface
    ShaderList mShaders;

    //! Textures - the first entry in the list is evaluated first
    TextureList mColorTextures, // color textures are added to both diffuse and specular texture stacks
        mDiffuseTextures,
        mSpecularTextures,
        mOpacityTextures,
        mBumpTextures,
        mGlossinessTextures,
        mReflectionTextures;

    //! Index of refraction
    float mIOR;

    //! Bump intensity scaling
    float mBumpIntensity;

    //! Wireframe flag
    bool mWireframe;

    //! Intensity of additive blending
    float mAdditiveTransparency;
};

// ---------------------------------------------------------------------------
#define AI_LWO_VALIDATE_CHUNK_LENGTH(length,name,size) \
    if (length < size) \
    { \
        throw DeadlyImportError("LWO: "#name" chunk is too small"); \
    } \


// some typedefs ... to make life with loader monsters like this easier
typedef std::vector <   aiVector3D      >   PointList;
typedef std::vector <   LWO::Face       >   FaceList;
typedef std::vector <   LWO::Surface    >   SurfaceList;
typedef std::vector <   std::string     >   TagList;
typedef std::vector <   unsigned int    >   TagMappingTable;
typedef std::vector <   unsigned int    >   ReferrerList;
typedef std::vector <   WeightChannel   >   WeightChannelList;
typedef std::vector <   VColorChannel   >   VColorChannelList;
typedef std::vector <   UVChannel       >   UVChannelList;
typedef std::vector <   Clip            >   ClipList;
typedef std::vector <   Envelope        >   EnvelopeList;
typedef std::vector <   unsigned int    >   SortedRep;

// ---------------------------------------------------------------------------
/** \brief Represents a layer in the file
 */
struct Layer
{
    Layer()
        : mFaceIDXOfs   (0)
        , mPointIDXOfs  (0)
        , mParent       (0x0)
        , mIndex        (0xffff)
        , skip          (false)
    {}

    /** Temporary point list from the file */
    PointList mTempPoints;

    /** Lists for every point the index of another point
        that has been copied from *this* point or UINT_MAX if
        no copy of the point has been made */
    ReferrerList mPointReferrers;

    /** Weight channel list from the file */
    WeightChannelList mWeightChannels;

    /** Subdivision weight channel list from the file */
    WeightChannelList mSWeightChannels;

    /** Vertex color list from the file */
    VColorChannelList mVColorChannels;

    /** UV channel list from the file */
    UVChannelList mUVChannels;

    /** Normal vector channel from the file */
    NormalChannel mNormals;

    /** Temporary face list from the file*/
    FaceList mFaces;

    /** Current face indexing offset from the beginning of the buffers*/
    unsigned int mFaceIDXOfs;

    /** Current point indexing offset from the beginning of the buffers*/
    unsigned int mPointIDXOfs;

    /** Parent index */
    uint16_t mParent;

    /** Index of the layer */
    uint16_t mIndex;

    /** Name of the layer */
    std::string mName;

    /** Pivot point of the layer */
    aiVector3D mPivot;

    /** Skip this layer? */
    bool skip;
};

typedef std::list<LWO::Layer>       LayerList;


}}


#endif // !! AI_LWO_FILEDATA_INCLUDED