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#include <vector>
using namespace std;
//3つのベクトル
struct Vector3f{
float x;
float y;
float z;
}vec3d;
//4つのベクトル
struct Vector4f{
float x;
float y;
float z;
float w;
}vec4d;
//4つの反射
struct Reflection4{
float diffuse;
float ambient;
float emission;
float specular;
};
//4つのカラー
struct Color4{
float r;
float g;
float b;
float a;
};
//UV座標
struct UV{
float u;//u値
float v;//v値
}vec2d;
struct Vector4I{
int x;
int y;
int z;
int w;
};
//ポリゴンデータ
struct Triangle{
Vector3f TriVer;
Vector3f TriNor;
UV TriUV;
}Tri;
//ポリゴンデータ
struct Quadrangle{
Vector3f QuadVer;
Vector3f QuadNor;
UV QuadUV;
}Quad;
//マテリアル構造体
struct MATERIAL{
int MaterialID;//ID
string MaterialName;//マテリアル名
Color4 Color;//カラー
Reflection4 ReflectionColor;//反射
float Power;//shiness
string TextureName;//テクスチャ名
}mtl;
//モデルクラス
class MODEL{
protected:
bool LoadMaterialFromFile(char* FileName);//マテリアルロード
vector <Triangle> Tridata;
vector <Quadrangle> Quaddata;
public:
MODEL();
MODEL(char* FileName);//コンストラクタ
bool OBJ_Load(char* FileName);//ロード
void Draw();
};
MODEL::MODEL(){
}
MODEL::MODEL(char* FileName){
OBJ_Load(FileName);
}
void MODEL::Draw(){
glEnableClientState(GL_VERTEX_ARRAY);
glEnableClientState(GL_NORMAL_ARRAY);
if(Tridata.size()>1){
glVertexPointer(3, GL_FLOAT,sizeof(Tri) , &Tridata[0].TriVer.x);
glNormalPointer(GL_FLOAT,sizeof(Tri),&Tridata[0].TriNor.x);
glDrawArrays(GL_TRIANGLES,0,Tridata.size());
}
if(Quaddata.size()>1){
glVertexPointer(3, GL_FLOAT,sizeof(Quad) , &Quaddata[0].QuadVer.x);
glNormalPointer(GL_FLOAT,sizeof(Quad),&Quaddata[0].QuadNor.x);
glDrawArrays(GL_QUADS,0,Quaddata.size());
}
glDisableClientState(GL_VERTEX_ARRAY);
glDisableClientState(GL_NORMAL_ARRAY);
}
//OBJファイル読み込み
bool MODEL::OBJ_Load(char* FileName){
Vector4I Face[3];//一時代入用
vector <Vector3f> Vertex;//頂点
vector <Vector3f> Normal;//法線
vector <UV> uv;//UV
vector <unsigned int> TriVerID;
vector <unsigned int> TriNorID;
vector <unsigned int> TriUVID;
vector <unsigned int> QuadVerID;
vector <unsigned int> QuadNorID;
vector <unsigned int> QuadUVID;
char key[255]={0};
//OBJファイルを開いて内容を読み込む
FILE* fp=NULL;
fopen_s(&fp,FileName,"rt");
//読み込み
fseek(fp,SEEK_SET,0);
while(!feof(fp))
{
//キーワード
ZeroMemory(key,sizeof(key));
fscanf_s(fp,"%s ",key,sizeof(key));
//マテリアル
if(strcmp(key,"mtllib")==0){
fscanf_s(fp,"%s ",key,sizeof(key));
LoadMaterialFromFile(key);
}
//頂点
if(strcmp(key,"v")==0){
fscanf_s(fp,"%f %f %f",&vec3d.x,&vec3d.y,&vec3d.z);
Vertex.push_back(vec3d);
}
//法線
if(strcmp(key,"vn")==0){
fscanf_s(fp,"%f %f %f",&vec3d.x,&vec3d.y,&vec3d.z);
Normal.push_back(vec3d);
}
//テクスチャ
if(strcmp(key,"vt")==0){
fscanf_s(fp,"%f %f",&vec2d.u,&vec2d.v);
uv.push_back(vec2d);
}
//面のインデックス 0=頂点 1=UV 2=法線
if(strcmp(key,"f")==0){
Face[0].w=-1;
Face[1].w=-1;
Face[2].w=-1;
fscanf_s(fp,"%d/%d/%d %d/%d/%d %d/%d/%d
%d/%d/%d",&Face[0].x,&Face[1].x,&Face[2].x,&Face[0].y,&Face[1].y,&Face[2].y,&Face[0].z,&Face[1].z,&Face[2].z,&Face[0].w,&Face[1].w,&Face[2].w);
if((Face[0].w == -1) && (Face[1].w == -1) && (Face[2].w ==
-1)){
//三角面
TriVerID.push_back(Face[0].x-1);
TriVerID.push_back(Face[0].y-1);
TriVerID.push_back(Face[0].z-1);
TriUVID.push_back(Face[1].x-1);
TriUVID.push_back(Face[1].y-1);
TriUVID.push_back(Face[1].z-1);
TriNorID.push_back(Face[2].x-1);
TriNorID.push_back(Face[2].y-1);
TriNorID.push_back(Face[2].z-1);
}else{
//四角面
QuadVerID.push_back(Face[0].x-1);
QuadVerID.push_back(Face[0].y-1);
QuadVerID.push_back(Face[0].z-1);
QuadVerID.push_back(Face[0].w-1);
QuadUVID.push_back(Face[1].x-1);
QuadUVID.push_back(Face[1].y-1);
QuadUVID.push_back(Face[1].z-1);
QuadUVID.push_back(Face[1].w-1);
QuadNorID.push_back(Face[2].x-1);
QuadNorID.push_back(Face[2].y-1);
QuadNorID.push_back(Face[2].z-1);
QuadNorID.push_back(Face[2].w-1);
}
}
}
for(int i=0;i<(signed)TriVerID.size();i++){
Tri.TriVer=Vertex[TriVerID[i]];
Tri.TriNor=Normal[TriNorID[i]];
Tri.TriUV=uv[TriUVID[i]];
Tridata.push_back(Tri);
}
printf("%d",Tridata.size());
for(int i=0;i<(signed)QuadVerID.size();i++){
Quad.QuadVer=Vertex[QuadVerID[i]];
Quad.QuadNor=Normal[QuadNorID[i]];
Quad.QuadUV=uv[QuadUVID[i]];
Quaddata.push_back(Quad);
}
Vertex.clear();
Normal.clear();
uv.clear();
TriVerID.clear();
TriNorID.clear();
TriUVID.clear();
QuadVerID.clear();
QuadNorID.clear();
QuadUVID.clear();
return true;
}
bool MODEL::LoadMaterialFromFile(char *FileName){
return true;
}
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