assimp/code/AssetLib/MD2/MD2FileData.h

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

Copyright (c) 2006-2024, assimp team


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  following disclaimer.

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

/** @file  MD2FileData.h
 *  @brief Defines helper data structures for importing MD2 files
 *  http://linux.ucla.edu/~phaethon/q3/formats/md2-schoenblum.html
 */
#ifndef AI_MD2FILEHELPER_H_INC
#define AI_MD2FILEHELPER_H_INC

#include <assimp/types.h>
#include <stdint.h>

#include <assimp/Compiler/pushpack1.h>

namespace Assimp    {
namespace MD2   {

// to make it easier for us, we test the magic word against both "endianesses"
#define AI_MD2_MAGIC_NUMBER_BE  AI_MAKE_MAGIC("IDP2")
#define AI_MD2_MAGIC_NUMBER_LE  AI_MAKE_MAGIC("2PDI")

// common limitations
#define AI_MD2_VERSION          15
#define AI_MD2_MAXQPATH         64
#define AI_MD2_MAX_FRAMES       512
#define AI_MD2_MAX_SKINS        32
#define AI_MD2_MAX_VERTS        2048
#define AI_MD2_MAX_TRIANGLES    4096

// ---------------------------------------------------------------------------
/** \brief Data structure for the MD2 main header
 */
struct Header
{
    uint32_t magic;
    uint32_t version;
    uint32_t skinWidth;
    uint32_t skinHeight;
    uint32_t frameSize;
    uint32_t numSkins;
    uint32_t numVertices;
    uint32_t numTexCoords;
    uint32_t numTriangles;
    uint32_t numGlCommands;
    uint32_t numFrames;
    uint32_t offsetSkins;
    uint32_t offsetTexCoords;
    uint32_t offsetTriangles;
    uint32_t offsetFrames;
    uint32_t offsetGlCommands;
    uint32_t offsetEnd;

} PACK_STRUCT;

// ---------------------------------------------------------------------------
/** \brief Data structure for a MD2 OpenGl draw command
 */
struct GLCommand
{
   float s, t;
   uint32_t vertexIndex;
} PACK_STRUCT;

// ---------------------------------------------------------------------------
/** \brief Data structure for a MD2 triangle
 */
struct Triangle
{
    uint16_t vertexIndices[3];
    uint16_t textureIndices[3];
} PACK_STRUCT;

// ---------------------------------------------------------------------------
/** \brief Data structure for a MD2 vertex
 */
struct Vertex
{
    uint8_t vertex[3];
    uint8_t lightNormalIndex;
} PACK_STRUCT;

// ---------------------------------------------------------------------------
/** \brief Data structure for a MD2 frame
 */
struct Frame
{
    float scale[3];
    float translate[3];
    char name[16];
    Vertex vertices[1];
} PACK_STRUCT;

// ---------------------------------------------------------------------------
/** \brief Data structure for a MD2 texture coordinate
 */
struct TexCoord
{
    uint16_t s;
    uint16_t t;
} PACK_STRUCT;

// ---------------------------------------------------------------------------
/** \brief Data structure for a MD2 skin
 */
struct Skin
{
    char name[AI_MD2_MAXQPATH];              /* texture file name */
} PACK_STRUCT;

#include <assimp/Compiler/poppack1.h>


// ---------------------------------------------------------------------------
//! Lookup a normal vector from Quake's normal lookup table
//! \param index Input index (0-161)
//! \param vOut Receives the output normal
void LookupNormalIndex(uint8_t index,aiVector3D& vOut);


}
}

#endif // !! include guard