r_model_alias.h

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/*
Copyright (C) 1997-2001 Id Software, Inc.

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

*/

#pragma once

#define MODEL_MAX_PATH 64
#define MAX_ALIAS_TRIS 4096
#define MAX_ALIAS_VERTS 8192

#define mAliasCoord_t vec2_t

typedef struct mAliasVertex_s {
    vec3_t  point;
    vec3_t  normal;
} mAliasVertex_t;

typedef struct mAliasComplexVertex_s {
    vec3_t  point;
    vec3_t  normal;
    vec4_t  tangent;
} mAliasComplexVertex_t;

typedef struct mAliasBoneMatrix_s {
    vec4_t  matrix[3];
} mAliasBoneMatrix_t;

typedef struct mAliasBoneVertex_s {
    vec3_t  origin;         
    float   influence;      
    vec3_t  normal;         
    unsigned int bonenum;   
} mAliasBoneVertex_t;

typedef struct mAliasFrame_s {
    AABB    fBox;
    vec3_t  translate;
    vec3_t  scale;
    float   radius;
    mAliasBoneMatrix_t* boneMatrix;
} mAliasFrame_t;

typedef struct mAliasTagOrientation_s {
    vec3_t origin;
    vec3_t axis[3];
} mAliasTagOrientation_t;

typedef struct mAliasTag_s {
    char name[MODEL_MAX_PATH];
    mAliasTagOrientation_t* orient;
} mAliasTag_t;

typedef struct mAliasSkin_s {
    char    name[MODEL_MAX_PATH];
    int shader;
    image_t* skin;
} mAliasSkin_t;

typedef struct mIndexList_s {
    int length;
    int32_t* list;
} mIndexList_t;

typedef struct mAliasMesh_s {
    int32_t num_verts;
    char    name[MODEL_MAX_PATH];
    mAliasVertex_t* vertexes;
    mAliasCoord_t* stcoords;

    /* static meshes have vertex arrays */
    vec_t* verts;
    vec_t* texcoords;
    vec_t* normals;
    vec_t* tangents;
    vec_t* next_verts;
    vec_t* next_normals;
    vec_t* next_tangents;

    int num_tris;
    int32_t* indexes;
    int32_t num_indexes;
    mIndexList_t* revIndexes;

    int     num_bones;
    mAliasBoneVertex_t* bonesVertexes;

    int     num_skins;
    int     skinHeight;
    int     skinWidth;
    mAliasSkin_t* skins;
} mAliasMesh_t;

#define MAX_ANIMS       128
#define MAX_ANIMNAME    16

typedef struct mAliasAnim_s {
    char name[MAX_ANIMNAME];    
    int from;                   
    int to;                     
    int time;
} mAliasAnim_t;

typedef struct mAliasBone_s {
    char name[MAX_VAR];
    int flags;
    int parent; /* -1 for no parent */
} mAliasBone_t;

typedef struct  mAliasModel_s {
    int     num_frames;
    mAliasFrame_t* frames;
    int     curFrame;
    int     oldFrame;

    int     num_tags;
    mAliasTag_t* tags;

    int     num_meshes;
    mAliasMesh_t* meshes;

    int     num_bones;
    mAliasBone_t* bones;

    int num_anims;
    mAliasAnim_t* animdata;
    int curAnim;
} mAliasModel_t;

void R_ModLoadAnims(mAliasModel_t* mod, const char* animname);
bool R_ModLoadMDX(struct model_s* mod);
void R_ModCalcUniqueNormalsAndTangents(mAliasMesh_t* mesh, int nFrames, float smoothness);
void R_FillArrayData(mAliasModel_t* mod, mAliasMesh_t* mesh, float backlerp, int framenum, int oldframenum, bool prerender);
void R_ModLoadArrayData(mAliasModel_t* mod, mAliasMesh_t* mesh, bool loadNormals);