{

// load the OBJ file here

char buffer[MAX_BUFFER_SIZE];

bool has_normal=false, has_texture = false,has_group = false;

string matlFileName;

while(cin.getline(buffer, MAX_BUFFER_SIZE)!=0)

{

stringstream ss(buffer);

std::string line = ss.str();

// empty line stream

if(line.empty()){

continue; //skip blank lines

//cout<<"this is empty"<<endl;

}

trimline(line);

std::vector < std::string > values = splitline(line, ' ');

Vector3f v;

//skipping comments

if(values[0] == "#"){

continue;

}

//mtlib file name

else if(values[0] == "mtllib"){

matlFileName = values[1];

readMaterial(matlFileName);

continue;

}

//groups / objects

else if(values[0] == "g"){

has_group = true;

obj = new Object;

Model.push_back(obj);

obj->obj_name = values[1];

}

//usemtl

//Reading Vertices

else if(values[0] == "v"){

//std::cout << "Reading Vertices :" << '\t' << values[1] << '\t'<< values[2]<< '\t' <<

//values[3]

//<< std::endl;

v[0] = std::atof(values[1].c_str());

v[1] = std::atof(values[2].c_str());

v[2] = std::atof(values[3].c_str());

if(v[0]<xmin)

xmin=v[0];

if(v[0]>xmax)

xmax=v[0];

if(v[1]<ymin)

ymin=v[1];

if(v[1]>ymax)

ymax=v[1];

if(v[2]<zmin)

zmin=v[2];

if(v[2]>zmax)

zmax=v[2];

//cout << v[0] << endl;

vecv.push_back(v);

//cout << obj->vecv[0] << endl;

}

//Reading texture

else if(values[0] == "vt"){

has_texture = true;

if(values.size() == 4){

v[0] = std::atof(values[1].c_str());

v[1] = std::atof(values[2].c_str());

v[2] = std::atof(values[3].c_str());

}

else if(values.size() == 3){

v[0] = std::atof(values[1].c_str());

v[1] = std::atof(values[2].c_str());

v[2] = 0;

}

else{

v[0] = std::atof(values[1].c_str());

v[1] = 0;

v[2] = 0;

}

vec_tex.push_back(v);

}

//Reading Normals

else if(values[0] == "vn"){

has_normal = true;

if(values.size() == 4){

v[0] = std::atof(values[1].c_str());

v[1] = std::atof(values[2].c_str());

v[2] = std::atof(values[3].c_str());

// std::cout << "Reading Vertex Normal :" << '\t'<< values[1] << '\t'<< values[2]<< '\t' <<

//values[3]

//<< std::endl;

}

// for less than two need to add

vecn.push_back(v);

}

//Reading Faces (f v/vt/vn v/vt/vn v/vt/vn v/vt/vn a/b/c d/e/f g/h/i)

else if(values[0] == "f"){

//for triangles

if(!has_group){

obj = new Object;

Model.push_back(obj);

obj->obj_name = "group_default";

has_group = true;

}

vector<unsigned> face;

//with both texture and normal variables

if(has_normal == true && has_texture == true){

vector<string> flds1 = splitline(values[1],'/');

vector<string> flds2 = splitline(values[2],'/');

vector<string> flds3 = splitline(values[3],'/');

face.push_back(atoi(flds1[0].c_str()));face.push_back(atoi(flds1[1].c_str()));face.push_back(atoi(flds1[2].c_str()));

face.push_back(atoi(flds2[0].c_str()));face.push_back(atoi(flds2[1].c_str()));face.push_back(atoi(flds2[2].c_str()));

face.push_back(atoi(flds3[0].c_str()));face.push_back(atoi(flds3[1].c_str()));face.push_back(atoi(flds3[2].c_str()));

obj->vecf.push_back(face);

//cout << "1st loop" <<endl;

}

else if(has_normal == true && has_texture == false){ //b e and h are absent

//cout << "2nd loop" <<endl;

vector<string> flds1 = splitline(values[1],'/');

vector<string> flds2 = splitline(values[2],'/');

vector<string> flds3 = splitline(values[3],'/');

//cout << flds1.size() << endl;

face.push_back(atoi(flds1[0].c_str()));face.push_back(0);face.push_back(atoi(flds1[1].c_str()));

face.push_back(atoi(flds2[0].c_str()));face.push_back(0);face.push_back(atoi(flds2[1].c_str()));

face.push_back(atoi(flds3[0].c_str()));face.push_back(0);face.push_back(atoi(flds3[1].c_str()));

obj->vecf.push_back(face);

}

else if(has_normal == false && has_texture == true){ //c f and i are absent

vector<string> flds1 = splitline(values[1],'/');

vector<string> flds2 = splitline(values[2],'/');

vector<string> flds3 = splitline(values[3],'/');

face.push_back(atoi(flds1[0].c_str()));face.push_back(atoi(flds1[1].c_str()));face.push_back(0);

face.push_back(atoi(flds2[0].c_str()));face.push_back(atoi(flds2[1].c_str()));face.push_back(0);

face.push_back(atoi(flds3[0].c_str()));face.push_back(atoi(flds3[1].c_str()));face.push_back(0);

obj->vecf.push_back(face);

//cout << "3rd loop" <<endl;

}

else if(has_normal == false && has_texture == false){

std::size_t found = values[1].find_first_of('/');

if(found != std::string::npos){

vector<string> flds1 = splitline(values[1],'/');

vector<string> flds2 = splitline(values[2],'/');

vector<string> flds3 = splitline(values[3],'/');

face.push_back(atoi(flds1[0].c_str()));face.push_back(0);face.push_back(0);

face.push_back(atoi(flds2[0].c_str()));face.push_back(0);face.push_back(0);

face.push_back(atoi(flds3[0].c_str()));face.push_back(0);face.push_back(0);

obj->vecf.push_back(face);

}

else{

//cout << values[1] << '\t' << values[2] << '\t' << values[3] << endl;

face.push_back(atoi(values[1].c_str()));face.push_back(atoi("0"));face.push_back(atoi("0"));

face.push_back(atoi(values[2].c_str()));face.push_back(atoi("0"));face.push_back(atoi("0"));

face.push_back(atoi(values[3].c_str()));face.push_back(atoi("0"));face.push_back(atoi("0"));

obj->vecf.push_back(face);

}

}

} //face loop ends

}

for(unsigned int i=0; i< Model.size(); i++){

if(Model[i]->vecf.size() == 0)

Model.erase(Model.begin()+i);

}

cout<<vecv.size()<<"\t"<<vecn.size() <<"\t" << vec_tex.size()<<endl;

cout <<"Model Size \t" << Model.size() << endl;

//cout << "Model Name \t" << Model[0]->obj_name << endl;

//cout << "Face Index \t" << Model[0]->vecf[0][3] << Model[0]->vecf[0][4] << Model[0]->vecf[0][5] << endl;

cout << "Vecf size\t" << Model[0]->vecf.size() << endl;