int ObjLoader::load(const char* filename)
{
std::ifstream in(filename); //open the model file
if(!in.is_open())
{
std::cout << "Not opened" << std::endl; //if it's not opened then error message, and return with -1
return -1;
}
char buf[256]; //temp buffer
int curmat=0; //the current (default) material is 0, it's used, when we read the faces
while(!in.eof())
{
in.getline(buf,256); //while we are not in the end of the file, read everything as a string to the coord vector
coord.push_back(new std::string(buf));
}
for(int i=0;i<coord.size();i++) //and then go through all line and decide what kind of line it is
{
if((*coord[i])[0]=='#') //if it's a comment
continue; //we don't have to do anything with it
else if((*coord[i])[0]=='v' && (*coord[i])[1]==' ') //if a vertex
{
float tmpx,tmpy,tmpz;
sscanf_s(coord[i]->c_str(),"v %f %f %f",&tmpx,&tmpy,&tmpz); //read the 3 floats, which makes up the vertex
vertex.push_back(new coordinate(tmpx,tmpy,tmpz)); //and put it in the vertex vector
}else if((*coord[i])[0]=='v' && (*coord[i])[1]=='n') //if it's a normal vector
{
float tmpx,tmpy,tmpz;
sscanf_s(coord[i]->c_str(),"vn %f %f %f",&tmpx,&tmpy,&tmpz);
normals.push_back(new coordinate(tmpx,tmpy,tmpz)); //basically do the same
isnormals=true;
}else if((*coord[i])[0]=='f') //if it's a face
{
int a,b,c,d,e;
if(count(coord[i]->begin(),coord[i]->end(),' ')==4) //if this is a quad
{
if(coord[i]->find("//")!=std::string::npos) //if it's contain a normal vector, but not contain texture coorinate
{
sscanf_s(coord[i]->c_str(),"f %d//%d %d//%d %d//%d %d//%d",&a,&b,&c,&b,&d,&b,&e,&b); //read in this form
faces.push_back(new face(b,a,c,d,e,0,0,0,0,curmat)); //and put to the faces, we don't care about the texture coorinate in this case
//and if there is no material, it doesn't matter, what is curmat
}else if(coord[i]->find("/")!=std::string::npos) //if we have texture coorinate and normal vectors
{
int t[4]; //texture coorinates
//read in this form, and put to the end of the vector
sscanf_s(coord[i]->c_str(),"f %d/%d/%d %d/%d/%d %d/%d/%d %d/%d/%d",&a,&t[0],&b,&c,&t[1],&b,&d,&t[2],&b,&e,&t[3],&b);
faces.push_back(new face(b,a,c,d,e,t[0],t[1],t[2],t[3],curmat));
}else{
//else we don't have normal vectors nor texture coorinate
sscanf_s(coord[i]->c_str(),"f %d %d %d %d",&a,&b,&c,&d);
faces.push_back(new face(-1,a,b,c,d,0,0,0,0,curmat));
}
}else{ //if it's a triangle
//do the same, except we use one less vertex/texture coorinate/face number
if(coord[i]->find("//")!=std::string::npos)
{
sscanf_s(coord[i]->c_str(),"f %d//%d %d//%d %d//%d",&a,&b,&c,&b,&d,&b);
faces.push_back(new face(b,a,c,d,0,0,0,curmat));
}else if(coord[i]->find("/")!=std::string::npos)
{
int t[3];
sscanf_s(coord[i]->c_str(),"f %d/%d/%d %d/%d/%d %d/%d/%d",&a,&t[0],&b,&c,&t[1],&b,&d,&t[2],&b);
faces.push_back(new face(b,a,c,d,t[0],t[1],t[2],curmat));
}else{
sscanf_s(coord[i]->c_str(),"f %d %d %d",&a,&b,&c);
faces.push_back(new face(-1,a,b,c,0,0,0,curmat));
}
}
}else if((*coord[i])[0]=='u' && (*coord[i])[1]=='s' && (*coord[i])[2]=='e') //use material material_name
{
char tmp[200];
sscanf_s(coord[i]->c_str(),"usemtl %s",tmp); //read the name of the material to tmp
for(int i=0;i<materials.size();i++) //go through all of the materials
{
if(strcmp(materials[i]->name.c_str(),tmp)==0) //and compare the tmp with the name of the material
{
curmat=i; //if it's equal then set the current material to that
break;
}
}
}else if((*coord[i])[0]=='m' && (*coord[i])[1]=='t' && (*coord[i])[2]=='l' && (*coord[i])[3]=='l') //material library, a file, which contain
//all of the materials
{
char filen[200];
sscanf_s(coord[i]->c_str(),"mtllib %s",filen); //read the filename
std::ifstream mtlin(filen); //open the file
if(!mtlin.is_open()) //if not opened error message, clean all memory, return with -1
{
std::cout << "cannot open the material file" << std::endl;
clean();
return -1;
}
ismaterial=true; //we use materials
std::vector<std::string> tmp;//contain all of the line of the file
char c[200];
while(!mtlin.eof())
{
mtlin.getline(c,200); //read all lines to tmp
tmp.push_back(c);
}
char name[200]; //name of the material
char filename[200]; //filename of the texture
float amb[3],dif[3],spec[3],alpha,ns,ni; //colors, shininess, and something else
int illum;
unsigned int texture;
bool ismat=false; //do we already have a material read in to these variables?
strcpy_s(filename,"\0"); //set filename to nullbyte character
for(int i=0;i<tmp.size();i++) //go through all lines of the mtllib file
{
if(tmp[i][0]=='#') //we don't care about comments
continue;
if(tmp[i][0]=='n' && tmp[i][1]=='e' && tmp[i][2]=='w') //new material
{
if(ismat) //if we have a material
{
if(strcmp(filename,"\0")!=0) //if we have a texture
{
materials.push_back(new material(name,alpha,ns,ni,dif,amb,spec,illum,texture)); //push back
strcpy_s(filename,"\0");
}else{
materials.push_back(new material(name,alpha,ns,ni,dif,amb,spec,illum,-1)); //push back, but use -1 to texture
}
}
ismat=false; //we start from a fresh material
sscanf_s(tmp[i].c_str(),"newmtl %s",name); //read in the name
}else if(tmp[i][0]=='N' && tmp[i][1]=='s') //the shininess
{
sscanf_s(tmp[i].c_str(),"Ns %f",&ns);
ismat=true;
}else if(tmp[i][0]=='K' && tmp[i][1]=='a') //the ambient
{
sscanf_s(tmp[i].c_str(),"Ka %f %f %f",&amb[0],&amb[1],&amb[2]);
ismat=true;
}else if(tmp[i][0]=='K' && tmp[i][1]=='d') //the diffuse
{
sscanf_s(tmp[i].c_str(),"Kd %f %f %f",&dif[0],&dif[1],&dif[2]);
ismat=true;
}else if(tmp[i][0]=='K' && tmp[i][1]=='s') //the specular
{
sscanf_s(tmp[i].c_str(),"Ks %f %f %f",&spec[0],&spec[1],&spec[2]);
ismat=true;
}else if(tmp[i][0]=='N' && tmp[i][1]=='i') //the I don't know what is this
{
sscanf_s(tmp[i].c_str(),"Ni %f",&ni);
ismat=true;
}else if(tmp[i][0]=='d' && tmp[i][1]==' ') //the alpha
{
sscanf_s(tmp[i].c_str(),"d %f",&alpha);
ismat=true;
}else if(tmp[i][0]=='i' && tmp[i][1]=='l') //the illum (don't ask)
{
sscanf_s(tmp[i].c_str(),"illum %d",&illum);
ismat=true;
}else if(tmp[i][0]=='m' && tmp[i][1]=='a') //and the texture
{
sscanf_s(tmp[i].c_str(),"map_Kd %s",filename);
texture=loadTexture(filename); //read the filename, and use the loadTexture function to load it, and get the id.
ismat=true;
}
}
if(ismat) //there is no newmat after the last newmat, so we have to put the last material 'manually'
{
if(strcmp(filename,"\0")!=0)
{
materials.push_back(new material(name,alpha,ns,ni,dif,amb,spec,illum,texture));
}else{
materials.push_back(new material(name,alpha,ns,ni,dif,amb,spec,illum,-1));
}
}
}else if((*coord[i])[0]=='v' && (*coord[i])[1]=='t') //back to the obj file, texture coorinate
{
float u,v;
sscanf_s(coord[i]->c_str(),"vt %f %f",&u,&v); //read the uv coordinate
texturecoordinate.push_back(new texcoord(u,1-v)); //I push back 1-v instead of normal v, because obj file use the upper left corner as 0,0 coorinate
//but OpenGL use bottom left corner as 0,0, so I convert it
istexture=true;
}
}
if(materials.size()==0) //if some reason the material file doesn't contain any material, we don't have material
ismaterial=false;
else //else we have
ismaterial=true;
std::cout << vertex.size() << " " << normals.size() << " " << faces.size() << " " << materials.size() << std::endl; //test purposes
//draw
int num;
num=glGenLists(1); //I generate a unique identifier for the list
glNewList(num,GL_COMPILE);
int last=-1; //the last material (default -1, which doesn't exist, so we use the first material)
for(int i=0;i<faces.size();i++) //go throught all faces
{
if(last!=faces[i]->mat && ismaterial) //if we have a meterial AND the last material is not the same
{
//set all of the material property
float diffuse[]={materials[faces[i]->mat]->dif[0],materials[faces[i]->mat]->dif[1],materials[faces[i]->mat]->dif[2],1.0};
float ambient[]={materials[faces[i]->mat]->amb[0],materials[faces[i]->mat]->amb[1],materials[faces[i]->mat]->amb[2],1.0};
float specular[]={materials[faces[i]->mat]->spec[0],materials[faces[i]->mat]->spec[1],materials[faces[i]->mat]->spec[2],1.0};
glMaterialfv(GL_FRONT,GL_AMBIENT,diffuse);
glMaterialfv(GL_FRONT,GL_AMBIENT,ambient);
glMaterialfv(GL_FRONT,GL_AMBIENT,specular);
glColor3f(diffuse[0], diffuse[1], diffuse[2]);
glMaterialf(GL_FRONT,GL_SHININESS,materials[faces[i]->mat]->ns);
last=faces[i]->mat; //set the current to last
if(materials[faces[i]->mat]->texture==-1) //if we don't have texture, disable it, else enable it
glDisable(GL_TEXTURE_2D);
else{
glEnable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D,materials[faces[i]->mat]->texture); //and use it
}
}
if(faces[i]->four) //if quad
{
glBegin(GL_QUADS);
if(isnormals) //if there are normals
glNormal3f(normals[faces[i]->facenum-1]->x,normals[faces[i]->facenum-1]->y,normals[faces[i]->facenum-1]->z); //use them
if(istexture && materials[faces[i]->mat]->texture!=-1) //if there are textures
glTexCoord2f(texturecoordinate[faces[i]->texcoord[0]-1]->u,texturecoordinate[faces[i]->texcoord[0]-1]->v); //set the texture coorinate
glVertex3f(vertex[faces[i]->faces[0]-1]->x,vertex[faces[i]->faces[0]-1]->y,vertex[faces[i]->faces[0]-1]->z);
if(istexture && materials[faces[i]->mat]->texture!=-1)
glTexCoord2f(texturecoordinate[faces[i]->texcoord[1]-1]->u,texturecoordinate[faces[i]->texcoord[1]-1]->v);
glVertex3f(vertex[faces[i]->faces[1]-1]->x,vertex[faces[i]->faces[1]-1]->y,vertex[faces[i]->faces[1]-1]->z);
if(istexture && materials[faces[i]->mat]->texture!=-1)
glTexCoord2f(texturecoordinate[faces[i]->texcoord[2]-1]->u,texturecoordinate[faces[i]->texcoord[2]-1]->v);
glVertex3f(vertex[faces[i]->faces[2]-1]->x,vertex[faces[i]->faces[2]-1]->y,vertex[faces[i]->faces[2]-1]->z);
if(istexture && materials[faces[i]->mat]->texture!=-1)
glTexCoord2f(texturecoordinate[faces[i]->texcoord[3]-1]->u,texturecoordinate[faces[i]->texcoord[3]-1]->v);
glVertex3f(vertex[faces[i]->faces[3]-1]->x,vertex[faces[i]->faces[3]-1]->y,vertex[faces[i]->faces[3]-1]->z);
glEnd();
}else{
glBegin(GL_TRIANGLES);
if(isnormals) //if there are normals
glNormal3f(normals[faces[i]->facenum-1]->x,normals[faces[i]->facenum-1]->y,normals[faces[i]->facenum-1]->z);
if(istexture && materials[faces[i]->mat]->texture!=-1)
glTexCoord2f(texturecoordinate[faces[i]->texcoord[0]-1]->u,texturecoordinate[faces[i]->texcoord[0]-1]->v);
glVertex3f(vertex[faces[i]->faces[0]-1]->x,vertex[faces[i]->faces[0]-1]->y,vertex[faces[i]->faces[0]-1]->z);
if(istexture && materials[faces[i]->mat]->texture!=-1)
glTexCoord2f(texturecoordinate[faces[i]->texcoord[1]-1]->u,texturecoordinate[faces[i]->texcoord[1]-1]->v);
glVertex3f(vertex[faces[i]->faces[1]-1]->x,vertex[faces[i]->faces[1]-1]->y,vertex[faces[i]->faces[1]-1]->z);
if(istexture && materials[faces[i]->mat]->texture!=-1)
glTexCoord2f(texturecoordinate[faces[i]->texcoord[2]-1]->u,texturecoordinate[faces[i]->texcoord[2]-1]->v);
glVertex3f(vertex[faces[i]->faces[2]-1]->x,vertex[faces[i]->faces[2]-1]->y,vertex[faces[i]->faces[2]-1]->z);
glEnd();
}
}
glEndList();
clean();
lists.push_back(num);
return num;
}
int objloader::load(const char* filename)
{
std::ifstream in(filename);
if(!in.is_open())
{
std::cout << "Nor oepened" << std::endl;
return -1;
}
char buf[256];
int curmat=0;
while(!in.eof())
{
in.getline(buf,256);
coord.push_back(new std::string(buf));
}
for(int i=0;i<coord.size();i++)
{
if((*coord[i])[0]=='#')
continue;
else if((*coord[i])[0]=='v' && (*coord[i])[1]==' ')
{
float tmpx,tmpy,tmpz;
sscanf(coord[i]->c_str(),"v %f %f %f",&tmpx,&tmpy,&tmpz);
vertex.push_back(new coordinate(tmpx,tmpy,tmpz));
}else if((*coord[i])[0]=='v' && (*coord[i])[1]=='n')
{
float tmpx,tmpy,tmpz;
sscanf(coord[i]->c_str(),"vn %f %f %f",&tmpx,&tmpy,&tmpz);
normals.push_back(new coordinate(tmpx,tmpy,tmpz));
}else if((*coord[i])[0]=='f')
{
int a,b,c,d,e;
if(count(coord[i]->begin(),coord[i]->end(),' ')==4)
{
if(coord[i]->find("//")!=std::string::npos)
{
sscanf(coord[i]->c_str(),"f %d//%d %d//%d %d//%d %d//%d",&a,&b,&c,&b,&d,&b,&e,&b);
faces.push_back(new face(b,a,c,d,e,0,0,0,0,curmat));
}else if(coord[i]->find("/")!=std::string::npos)
{
int t[4];
sscanf(coord[i]->c_str(),"f %d/%d/%d %d/%d/%d %d/%d/%d %d/%d/%d",&a,&t[0],&b,&c,&t[1],&b,&d,&t[2],&b,&e,&t[3],&b);
faces.push_back(new face(b,a,c,d,e,t[0],t[1],t[2],t[3],curmat));
}else{
sscanf(coord[i]->c_str(),"f %d %d %d %d",&a,&b,&c,&d);
faces.push_back(new face(-1,a,b,c,d,0,0,0,0,curmat));
}
}else{
if(coord[i]->find("//")!=std::string::npos)
{
sscanf(coord[i]->c_str(),"f %d//%d %d//%d %d//%d",&a,&b,&c,&b,&d,&b);
faces.push_back(new face(b,a,c,d,0,0,0,curmat));
}else if(coord[i]->find("/")!=std::string::npos)
{
int t[3];
sscanf(coord[i]->c_str(),"f %d/%d/%d %d/%d/%d %d/%d/%d",&a,&t[0],&b,&c,&t[1],&b,&d,&t[2],&b);
faces.push_back(new face(b,a,c,d,t[0],t[1],t[2],curmat));
}else{
sscanf(coord[i]->c_str(),"f %d %d %d",&a,&b,&c);
faces.push_back(new face(-1,a,b,c,0,0,0,curmat));
}
}
}else if((*coord[i])[0]=='u' && (*coord[i])[1]=='s' && (*coord[i])[2]=='e')
{
char tmp[200];
sscanf(coord[i]->c_str(),"usemtl %s",tmp);
for(int i=0;i<materials.size();i++)
{
if(strcmp(materials[i]->name.c_str(),tmp)==0)
{
curmat=i;
break;
}
}
}else if((*coord[i])[0]=='m' && (*coord[i])[1]=='t' && (*coord[i])[2]=='l' && (*coord[i])[3]=='l')
{
char filen[200];
sscanf(coord[i]->c_str(),"mtllib %s",filen);
std::ifstream mtlin(filen);
if(!mtlin.is_open())
{
std::cout << "connot open the material file" << std::endl;
clean();
return -1;
}
ismaterial=true;
std::vector<std::string> tmp;
char c[200];
while(!mtlin.eof())
{
mtlin.getline(c,200);
tmp.push_back(c);
}
char name[200];
char filename[200];
float amb[3],dif[3],spec[3],alpha,ns,ni;
int illum;
unsigned int texture;
bool ismat=false;
strcpy(filename,"\0");
std::cout << tmp.size() << std::endl;
for(int i=0;i<tmp.size();i++)
{
if(tmp[i][0]=='#')
continue;
if(tmp[i][0]=='n' && tmp[i][1]=='e' && tmp[i][2]=='w')
{
if(ismat)
{
if(strcmp(filename,"\0")!=0)
{
materials.push_back(new material(name,alpha,ns,ni,dif,amb,spec,illum,texture));
strcpy(filename,"\0");
}else{
materials.push_back(new material(name,alpha,ns,ni,dif,amb,spec,illum,-1));
}
}
ismat=false;
sscanf(tmp[i].c_str(),"newmtl %s",name);
}else if(tmp[i][0]=='N' && tmp[i][1]=='s')
{
sscanf(tmp[i].c_str(),"Ns %f",&ns);
ismat=true;
}else if(tmp[i][0]=='K' && tmp[i][1]=='a')
{
sscanf(tmp[i].c_str(),"Ka %f %f %f",&amb[0],&amb[1],&amb[2]);
ismat=true;
}else if(tmp[i][0]=='K' && tmp[i][1]=='d')
{
sscanf(tmp[i].c_str(),"Kd %f %f %f",&dif[0],&dif[1],&dif[2]);
ismat=true;
}else if(tmp[i][0]=='K' && tmp[i][1]=='s')
{
sscanf(tmp[i].c_str(),"Ks %f %f %f",&spec[0],&spec[1],&spec[2]);
ismat=true;
}else if(tmp[i][0]=='N' && tmp[i][1]=='i')
{
sscanf(tmp[i].c_str(),"Ni %f",&ni);
ismat=true;
}else if(tmp[i][0]=='d' && tmp[i][1]==' ')
{
sscanf(tmp[i].c_str(),"d %f",&alpha);
ismat=true;
}else if(tmp[i][0]=='i' && tmp[i][1]=='l')
{
sscanf(tmp[i].c_str(),"illum %d",&illum);
ismat=true;
}else if(tmp[i][0]=='m' && tmp[i][1]=='a')
{
sscanf(tmp[i].c_str(),"map_Kd %s",filename);
texture=loadTexture(filename);
ismat=true;
}
}
if(ismat)
{
if(strcmp(filename,"\0")!=0)
{
materials.push_back(new material(name,alpha,ns,ni,dif,amb,spec,illum,texture));
}else{
materials.push_back(new material(name,alpha,ns,ni,dif,amb,spec,illum,-1));
}
}
}else if((*coord[i])[0]=='v' && (*coord[i])[1]=='t')
{
float u,v;
sscanf(coord[i]->c_str(),"vt %f %f",&u,&v);
texturecoordinate.push_back(new texcoord(u,1-v));
istexture=true;
}
}
if(materials.size()==0)
ismaterial=false;
else
ismaterial=true;
std::cout << vertex.size() << " " << normals.size() << " " << faces.size() << " " << materials.size() << std::endl;
//draw
if(isvertexnormal)
smoothnormals();
int num;
num=glGenLists(1);
glNewList(num,GL_COMPILE);
int last=-1;
for(int i=0;i<faces.size();i++)
{
if(last!=faces[i]->mat && ismaterial)
{
float diffuse[]={materials[faces[i]->mat]->dif[0],materials[faces[i]->mat]->dif[1],materials[faces[i]->mat]->dif[2],1.0};
float ambient[]={materials[faces[i]->mat]->amb[0],materials[faces[i]->mat]->amb[1],materials[faces[i]->mat]->amb[2],1.0};
float specular[]={materials[faces[i]->mat]->spec[0],materials[faces[i]->mat]->spec[1],materials[faces[i]->mat]->spec[2],1.0};
glMaterialfv(GL_FRONT,GL_DIFFUSE,diffuse);
glMaterialfv(GL_FRONT,GL_AMBIENT,ambient);
glMaterialfv(GL_FRONT,GL_SPECULAR,specular);
glMaterialf(GL_FRONT,GL_SHININESS,materials[faces[i]->mat]->ns);
last=faces[i]->mat;
if(materials[faces[i]->mat]->texture==-1)
glDisable(GL_TEXTURE_2D);
else{
glEnable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D,materials[faces[i]->mat]->texture);
}
}
if(faces[i]->four)
{
glBegin(GL_QUADS);
glNormal3f(normals[faces[i]->facenum-1]->x,normals[faces[i]->facenum-1]->y,normals[faces[i]->facenum-1]->z);
if(istexture && materials[faces[i]->mat]->texture!=-1)
glTexCoord2f(texturecoordinate[faces[i]->texcoord[0]-1]->u,texturecoordinate[faces[i]->texcoord[0]-1]->v);
if(isvertexnormal)
glNormal3f(vertexnormals[faces[i]->faces[0]-1]->x,vertexnormals[faces[i]->faces[0]-1]->y,vertexnormals[faces[i]->faces[0]-1]->z);
glVertex3f(vertex[faces[i]->faces[0]-1]->x,vertex[faces[i]->faces[0]-1]->y,vertex[faces[i]->faces[0]-1]->z);
if(istexture && materials[faces[i]->mat]->texture!=-1)
glTexCoord2f(texturecoordinate[faces[i]->texcoord[1]-1]->u,texturecoordinate[faces[i]->texcoord[1]-1]->v);
if(isvertexnormal)
glNormal3f(vertexnormals[faces[i]->faces[1]-1]->x,vertexnormals[faces[i]->faces[1]-1]->y,vertexnormals[faces[i]->faces[1]-1]->z);
glVertex3f(vertex[faces[i]->faces[1]-1]->x,vertex[faces[i]->faces[1]-1]->y,vertex[faces[i]->faces[1]-1]->z);
if(istexture && materials[faces[i]->mat]->texture!=-1)
glTexCoord2f(texturecoordinate[faces[i]->texcoord[2]-1]->u,texturecoordinate[faces[i]->texcoord[2]-1]->v);
if(isvertexnormal)
glNormal3f(vertexnormals[faces[i]->faces[2]-1]->x,vertexnormals[faces[i]->faces[2]-1]->y,vertexnormals[faces[i]->faces[2]-1]->z);
glVertex3f(vertex[faces[i]->faces[2]-1]->x,vertex[faces[i]->faces[2]-1]->y,vertex[faces[i]->faces[2]-1]->z);
if(istexture && materials[faces[i]->mat]->texture!=-1)
glTexCoord2f(texturecoordinate[faces[i]->texcoord[3]-1]->u,texturecoordinate[faces[i]->texcoord[3]-1]->v);
if(isvertexnormal)
glNormal3f(vertexnormals[faces[i]->faces[3]-1]->x,vertexnormals[faces[i]->faces[3]-1]->y,vertexnormals[faces[i]->faces[3]-1]->z);
glVertex3f(vertex[faces[i]->faces[3]-1]->x,vertex[faces[i]->faces[3]-1]->y,vertex[faces[i]->faces[3]-1]->z);
glEnd();
}else{
glBegin(GL_TRIANGLES);
glNormal3f(normals[faces[i]->facenum-1]->x,normals[faces[i]->facenum-1]->y,normals[faces[i]->facenum-1]->z);
if(istexture && materials[faces[i]->mat]->texture!=-1)
glTexCoord2f(texturecoordinate[faces[i]->texcoord[0]-1]->u,texturecoordinate[faces[i]->texcoord[0]-1]->v);
if(isvertexnormal)
glNormal3f(vertexnormals[faces[i]->faces[0]-1]->x,vertexnormals[faces[i]->faces[0]-1]->y,vertexnormals[faces[i]->faces[0]-1]->z);
glVertex3f(vertex[faces[i]->faces[0]-1]->x,vertex[faces[i]->faces[0]-1]->y,vertex[faces[i]->faces[0]-1]->z);
if(istexture && materials[faces[i]->mat]->texture!=-1)
glTexCoord2f(texturecoordinate[faces[i]->texcoord[1]-1]->u,texturecoordinate[faces[i]->texcoord[1]-1]->v);
if(isvertexnormal)
glNormal3f(vertexnormals[faces[i]->faces[1]-1]->x,vertexnormals[faces[i]->faces[1]-1]->y,vertexnormals[faces[i]->faces[1]-1]->z);
glVertex3f(vertex[faces[i]->faces[1]-1]->x,vertex[faces[i]->faces[1]-1]->y,vertex[faces[i]->faces[1]-1]->z);
if(istexture && materials[faces[i]->mat]->texture!=-1)
glTexCoord2f(texturecoordinate[faces[i]->texcoord[2]-1]->u,texturecoordinate[faces[i]->texcoord[2]-1]->v);
if(isvertexnormal)
glNormal3f(vertexnormals[faces[i]->faces[2]-1]->x,vertexnormals[faces[i]->faces[2]-1]->y,vertexnormals[faces[i]->faces[2]-1]->z);
glVertex3f(vertex[faces[i]->faces[2]-1]->x,vertex[faces[i]->faces[2]-1]->y,vertex[faces[i]->faces[2]-1]->z);
glEnd();
}
}
glEndList();
clean();
lists.push_back(num);
return num;
}
int objloader::load(const std::string& filename,std::vector<collisionplane>* collplane)
{
ismaterial=false;
isnormals=false;
istexture=false;
isvertexnormal=false;
std::ifstream in(filename.c_str());
if(!in.is_open())
{
out << "Not opened file " << filename << std::endl;
return -1;
}
std::string path=filename.substr(0,((filename.find_last_of('/')+1!=std::string::npos) ? (filename.find_last_of('/')+1):0));
out << filename << std::endl;
char buf[256];
int curmat=0;
bool coll=false;
int z=0;
int h=-1;
while(!in.eof())
{
in.getline(buf,256);
coord.push_back(new std::string(buf));
}
for(int i=0; i<coord.size(); i++)
{
if((*coord[i])[0]=='#')
continue;
else if((*coord[i])[0]=='v' && (*coord[i])[1]==' ')
{
float tmpx,tmpy,tmpz;
sscanf(coord[i]->c_str(),"v %f %f %f",&tmpx,&tmpy,&tmpz);
vertex.push_back(new coordinate(tmpx,tmpy,tmpz));
out << "v " << tmpx << " " << tmpy << " " << tmpz << std::endl;
}
else if((*coord[i])[0]=='v' && (*coord[i])[1]=='n')
{
float tmpx,tmpy,tmpz;
sscanf(coord[i]->c_str(),"vn %f %f %f",&tmpx,&tmpy,&tmpz);
normals.push_back(new coordinate(tmpx,tmpy,tmpz));
out << "vn " << tmpx << " " << tmpy << " " << tmpz << std::endl;
}
else if((*coord[i])[0]=='f')
{
int a,b,c,d,e;
if(coll && collplane!=NULL)
{
sscanf(coord[i]->c_str(),"f %d//%d %d//%d %d//%d %d//%d",&a,&b,&c,&b,&d,&b,&e,&b);
collplane->push_back(collisionplane(normals[b-1]->x,normals[b-1]->y,normals[b-1]->z,vertex[a-1]->x,vertex[a-1]->y,vertex[a-1]->z,vertex[c-1]->x,vertex[c-1]->y,vertex[c-1]->z,vertex[d-1]->x,vertex[d-1]->y,vertex[d-1]->z,vertex[e-1]->x,vertex[e-1]->y,vertex[e-1]->z));
}
else
{
if(count(coord[i]->begin(),coord[i]->end(),' ')==4)
{
if(coord[i]->find("//")!=std::string::npos)
{
sscanf(coord[i]->c_str(),"f %d//%d %d//%d %d//%d %d//%d",&a,&b,&c,&b,&d,&b,&e,&b);
faces.push_back(new face(b,a,c,d,e,0,0,0,0,curmat));
}
else if(coord[i]->find("/")!=std::string::npos)
{
int t[4];
sscanf(coord[i]->c_str(),"f %d/%d/%d %d/%d/%d %d/%d/%d %d/%d/%d",&a,&t[0],&b,&c,&t[1],&b,&d,&t[2],&b,&e,&t[3],&b);
out << t[0] << " " <<t[1] << " " <<t[2] << " " <<t[3] << " " << a << " " << b << " " << c << " " << d << " " << e << std::endl;
faces.push_back(new face(b,a,c,d,e,t[0],t[1],t[2],t[3],curmat));
}
else
{
sscanf(coord[i]->c_str(),"f %d %d %d %d",&a,&b,&c,&d);
faces.push_back(new face(-1,a,b,c,d,0,0,0,0,curmat));
}
}
else
{
if(coord[i]->find("//")!=std::string::npos)
{
sscanf(coord[i]->c_str(),"f %d//%d %d//%d %d//%d",&a,&b,&c,&b,&d,&b);
faces.push_back(new face(b,a,c,d,0,0,0,curmat));
}
else if(coord[i]->find("/")!=std::string::npos)
{
int t[3];
sscanf(coord[i]->c_str(),"f %d/%d/%d %d/%d/%d %d/%d/%d",&a,&t[0],&b,&c,&t[1],&b,&d,&t[2],&b);
faces.push_back(new face(b,a,c,d,t[0],t[1],t[2],curmat));
}
else
{
sscanf(coord[i]->c_str(),"f %d %d %d",&a,&b,&c);
faces.push_back(new face(-1,a,b,c,0,0,0,curmat));
}
}
}
}
else if((*coord[i])[0]=='u' && (*coord[i])[1]=='s' && (*coord[i])[2]=='e')
{
char tmp[200];
sscanf(coord[i]->c_str(),"usemtl %s",tmp);
if(strcmp(tmp,"collision")==0)
{
coll=true;
}
else
{
coll=false;
for(int i=0; i<materials.size(); i++)
{
if(strcmp(materials[i]->name.c_str(),tmp)==0)
{
curmat=i;
out << "curmat=" << i << std::endl;
break;
}
}
}
}
else if((*coord[i])[0]=='m' && (*coord[i])[1]=='t' && (*coord[i])[2]=='l' && (*coord[i])[3]=='l')
{
char filen[200];
sscanf(coord[i]->c_str(),"mtllib %s",filen);
std::string filen2=path+filen;
std::ifstream mtlin(filen2.c_str());
if(!mtlin.is_open())
{
out << "connot open the material file " << filen2 << std::endl;
clean();
return -1;
}
ismaterial=true;
std::vector<std::string> tmp;
char c[200];
while(!mtlin.eof())
{
mtlin.getline(c,200);
tmp.push_back(c);
}
char name[200];
char filename[200];
float amb[3],dif[3],spec[3],alpha,ns,ni;
int illum;
unsigned int texture=0;
bool ismat=false;
strcpy(filename,"\0");
// std::cout << tmp.size() << std::endl;
for(int i=0; i<tmp.size(); i++)
{
if(tmp[i][0]=='#')
continue;
if(tmp[i][0]=='n' && tmp[i][1]=='e' && tmp[i][2]=='w')
{
if(ismat)
{
if(strcmp(filename,"\0")!=0 && strcmp(filename,"collision")!=0)
{
materials.push_back(new material(name,alpha,ns,ni,dif,amb,spec,illum,texture));
strcpy(filename,"\0");
}
else
{
materials.push_back(new material(name,alpha,ns,ni,dif,amb,spec,illum,-1));
}
}
ismat=false;
sscanf(tmp[i].c_str(),"newmtl %s",name);
out << "newmtl " << name << std::endl;
}
else if(tmp[i][0]=='N' && tmp[i][1]=='s')
{
sscanf(tmp[i].c_str(),"Ns %f",&ns);
ismat=true;
}
else if(tmp[i][0]=='K' && tmp[i][1]=='a')
{
sscanf(tmp[i].c_str(),"Ka %f %f %f",&amb[0],&amb[1],&amb[2]);
ismat=true;
}
else if(tmp[i][0]=='K' && tmp[i][1]=='d')
{
sscanf(tmp[i].c_str(),"Kd %f %f %f",&dif[0],&dif[1],&dif[2]);
ismat=true;
}
else if(tmp[i][0]=='K' && tmp[i][1]=='s')
{
sscanf(tmp[i].c_str(),"Ks %f %f %f",&spec[0],&spec[1],&spec[2]);
ismat=true;
}
else if(tmp[i][0]=='N' && tmp[i][1]=='i')
{
sscanf(tmp[i].c_str(),"Ni %f",&ni);
ismat=true;
}
else if(tmp[i][0]=='d' && tmp[i][1]==' ')
{
sscanf(tmp[i].c_str(),"d %f",&alpha);
ismat=true;
}
else if(tmp[i][0]=='i' && tmp[i][1]=='l')
{
sscanf(tmp[i].c_str(),"illum %d",&illum);
ismat=true;
}
else if(tmp[i][0]=='m' && tmp[i][1]=='a')
{
sscanf(tmp[i].c_str(),"map_Kd %s",filename);
bool l=0;
out << "Opening image: " << filename << std::endl;
std::string filename2=path+filename;
for(int i=0; i<loadedTextures.size(); i++)
if(loadedTextures[i]==filename2)
{
out << "loading " << filename2 << std::endl;
texture=loadedTexturesNum[i];
l=1;
break;
}
if(l==0)
texture=loadTexture(filename2.c_str());
ismat=true;
}
}
if(ismat)
{
if(strcmp(filename,"\0")!=0)
{
materials.push_back(new material(name,alpha,ns,ni,dif,amb,spec,illum,texture));
}
else
{
materials.push_back(new material(name,alpha,ns,ni,dif,amb,spec,illum,-1));
}
}
}
else if((*coord[i])[0]=='v' && (*coord[i])[1]=='t')
{
float u,v;
sscanf(coord[i]->c_str(),"vt %f %f",&u,&v);
texturecoordinate.push_back(new texcoord(u,1-v));
istexture=true;
}
}
if(materials.size()==0)
ismaterial=false;
else
ismaterial=true;
out << "numvertex :" << vertex.size() << " " << normals.size() << " " << faces.size() << " " << materials.size() << std::endl;
//draw
if(isvertexnormal)
smoothnormals();
int num;
num=glGenLists(1);
glNewList(num,GL_COMPILE);
int last=-1;
for(int i=0; i<faces.size(); i++)
{
if(last!=faces[i]->mat && ismaterial)
{
float diffuse[]= {materials[faces[i]->mat]->dif[0],materials[faces[i]->mat]->dif[1],materials[faces[i]->mat]->dif[2],1.0};
float ambient[]= {materials[faces[i]->mat]->amb[0],materials[faces[i]->mat]->amb[1],materials[faces[i]->mat]->amb[2],1.0};
float specular[]= {materials[faces[i]->mat]->spec[0],materials[faces[i]->mat]->spec[1],materials[faces[i]->mat]->spec[2],1.0};
glMaterialfv(GL_FRONT,GL_DIFFUSE,diffuse);
glMaterialfv(GL_FRONT,GL_AMBIENT,ambient);
glMaterialfv(GL_FRONT,GL_SPECULAR,specular);
glMaterialf(GL_FRONT,GL_SHININESS,materials[faces[i]->mat]->ns);
glColor3f(diffuse[0],diffuse[1],diffuse[2]);
last=faces[i]->mat;
out << "1....." << std::endl;
if(materials[faces[i]->mat]->texture==-1)
glDisable(GL_TEXTURE_2D);
else
{
glEnable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D,materials[faces[i]->mat]->texture);
}
}
if(faces[i]->texcoord[0]==0)
istexture=false;
else
istexture=true;
out << "2....." << std::endl;
isnormals=false;
if(faces[i]->four)
{
glBegin(GL_QUADS);
out << "faces[i]->texcoord[0]-1 " << faces[i]->facenum-1 << std::endl;
if(isnormals)
glNormal3f(normals[faces[i]->facenum-1]->x,normals[faces[i]->facenum-1]->y,normals[faces[i]->facenum-1]->z);
if(istexture && materials[faces[i]->mat]->texture!=-1)
glTexCoord2f(texturecoordinate[faces[i]->texcoord[0]-1]->u,texturecoordinate[faces[i]->texcoord[0]-1]->v);
if(isvertexnormal)
glNormal3f(vertexnormals[faces[i]->faces[0]-1]->x,vertexnormals[faces[i]->faces[0]-1]->y,vertexnormals[faces[i]->faces[0]-1]->z);
out << "faces[i]->faces[0]-1: " << faces[i]->faces[0]-1 << " " << faces[i]->faces[1]-1 << " " << faces[i]->faces[2]-1 << " " << faces[i]->faces[3]-1 << " " << std::endl;
glVertex3f(vertex[faces[i]->faces[0]-1]->x,vertex[faces[i]->faces[0]-1]->y,vertex[faces[i]->faces[0]-1]->z);
if(istexture && materials[faces[i]->mat]->texture!=-1)
glTexCoord2f(texturecoordinate[faces[i]->texcoord[1]-1]->u,texturecoordinate[faces[i]->texcoord[1]-1]->v);
if(isvertexnormal)
glNormal3f(vertexnormals[faces[i]->faces[1]-1]->x,vertexnormals[faces[i]->faces[1]-1]->y,vertexnormals[faces[i]->faces[1]-1]->z);
glVertex3f(vertex[faces[i]->faces[1]-1]->x,vertex[faces[i]->faces[1]-1]->y,vertex[faces[i]->faces[1]-1]->z);
if(istexture && materials[faces[i]->mat]->texture!=-1)
glTexCoord2f(texturecoordinate[faces[i]->texcoord[2]-1]->u,texturecoordinate[faces[i]->texcoord[2]-1]->v);
if(isvertexnormal)
glNormal3f(vertexnormals[faces[i]->faces[2]-1]->x,vertexnormals[faces[i]->faces[2]-1]->y,vertexnormals[faces[i]->faces[2]-1]->z);
glVertex3f(vertex[faces[i]->faces[2]-1]->x,vertex[faces[i]->faces[2]-1]->y,vertex[faces[i]->faces[2]-1]->z);
if(istexture && materials[faces[i]->mat]->texture!=-1)
glTexCoord2f(texturecoordinate[faces[i]->texcoord[3]-1]->u,texturecoordinate[faces[i]->texcoord[3]-1]->v);
if(isvertexnormal)
glNormal3f(vertexnormals[faces[i]->faces[3]-1]->x,vertexnormals[faces[i]->faces[3]-1]->y,vertexnormals[faces[i]->faces[3]-1]->z);
glVertex3f(vertex[faces[i]->faces[3]-1]->x,vertex[faces[i]->faces[3]-1]->y,vertex[faces[i]->faces[3]-1]->z);
glEnd();
}
else
{
glBegin(GL_TRIANGLES);
if(isnormals)
glNormal3f(normals[faces[i]->facenum-1]->x,normals[faces[i]->facenum-1]->y,normals[faces[i]->facenum-1]->z);
if(istexture && materials[faces[i]->mat]->texture!=-1)
glTexCoord2f(texturecoordinate[faces[i]->texcoord[0]-1]->u,texturecoordinate[faces[i]->texcoord[0]-1]->v);
if(isvertexnormal)
glNormal3f(vertexnormals[faces[i]->faces[0]-1]->x,vertexnormals[faces[i]->faces[0]-1]->y,vertexnormals[faces[i]->faces[0]-1]->z);
glVertex3f(vertex[faces[i]->faces[0]-1]->x,vertex[faces[i]->faces[0]-1]->y,vertex[faces[i]->faces[0]-1]->z);
if(istexture && materials[faces[i]->mat]->texture!=-1)
glTexCoord2f(texturecoordinate[faces[i]->texcoord[1]-1]->u,texturecoordinate[faces[i]->texcoord[1]-1]->v);
if(isvertexnormal)
glNormal3f(vertexnormals[faces[i]->faces[1]-1]->x,vertexnormals[faces[i]->faces[1]-1]->y,vertexnormals[faces[i]->faces[1]-1]->z);
glVertex3f(vertex[faces[i]->faces[1]-1]->x,vertex[faces[i]->faces[1]-1]->y,vertex[faces[i]->faces[1]-1]->z);
if(istexture && materials[faces[i]->mat]->texture!=-1)
glTexCoord2f(texturecoordinate[faces[i]->texcoord[2]-1]->u,texturecoordinate[faces[i]->texcoord[2]-1]->v);
if(isvertexnormal)
glNormal3f(vertexnormals[faces[i]->faces[2]-1]->x,vertexnormals[faces[i]->faces[2]-1]->y,vertexnormals[faces[i]->faces[2]-1]->z);
glVertex3f(vertex[faces[i]->faces[2]-1]->x,vertex[faces[i]->faces[2]-1]->y,vertex[faces[i]->faces[2]-1]->z);
glEnd();
}
}
glEndList();
out << "3....." << std::endl;
clean();
lists.push_back(num);
return num;
}
int ObjLoader::Load(const char* fileName)
{
//Open the model file
ifstream in(fileName);
//Temp buffer
char buf[256];
if (!in.is_open())
{
//If it didn't load
cout << "Not opened" << endl;
return -1;
}
while (!in.eof())
{
//While we are not at the end of the file, read everything as a string to the coord vector
in.getline(buf, 256);
coord.push_back(new string(buf));
}
//Go through the line and decide what kind of line it is
for (int i = 0; i < coord.size(); i++)
{
//If it's a comment
if ((*coord[i])[0] == '#')
{
//We don't have to do anything with it
continue;
}
//If it's a vertex
else if ((*coord[i])[0] == 'v' && (*coord[i])[1] == ' ')
{
float tmpx, tmpy, tmpz;
//Read the 3 floats, which makes up the vertex
sscanf(coord[i]->c_str(), "v %f %f %f", &tmpx, &tmpy, &tmpz);
//And put it in the vertex vector
vertex.push_back(new Vector3D(tmpx, tmpy, tmpz));
}
//If it's a normal vector
else if ((*coord[i])[0] == 'v' && (*coord[i])[1] == 'n')
{
float tmpx, tmpy, tmpz;
//Read the 3 floats, which makes up the normal
sscanf(coord[i]->c_str(), "vn %f %f %f", &tmpx, &tmpy, &tmpz);
//And put it in the normal vector
normals.push_back(new Vector3D(tmpx, tmpy, tmpz));
isnormals = true;
}
//If it's a face
else if ((*coord[i])[0] == 'f')
{
int a, b, c, d, e;
//If this is a quad
if (count(coord[i]->begin(), coord[i]->end(), ' ') == 4)
{
//If it contains a normal vector, but doesn't contain a texture coorinate
if (coord[i]->find("//") != string::npos)
{
//Read in this form
sscanf(coord[i]->c_str(), "f %d//%d %d//%d %d//%d %d//%d", &a, &b, &c, &b, &d, &b, &e, &b);
//We don't care about the texture coorinate in this case
faces.push_back(new face(b, a, c, d, e, 0, 0, 0, 0, curmat));
}
//If we have texture coorinate and normal vectors
else if (coord[i]->find("/") != string::npos)
{
//Texture Coorinates
int t[4];
//Read in this form, and put to the end of the vector
sscanf(coord[i]->c_str(), "f %d/%d/%d %d/%d/%d %d/%d/%d %d/%d/%d", &a, &t[0], &b, &c, &t[1], &b, &d, &t[2], &b, &e, &t[3], &b);
faces.push_back(new face(b, a, c, d, e, t[0], t[1], t[2], t[3], curmat));
}
//Else we don't have normal vectors or texture coorinates
else
{
sscanf(coord[i]->c_str(), "f %d %d %d %d", &a, &b, &c, &d);
faces.push_back(new face(-1, a, b, c, d, 0, 0, 0, 0, curmat));
}
}
//If it's a triangle
else
{
//Do the same, except we use one less vertex/texture coorinate/face number
if (coord[i]->find("//") != string::npos)
{
sscanf(coord[i]->c_str(), "f %d//%d %d//%d %d//%d", &a, &b, &c, &b, &d, &b);
faces.push_back(new face(b, a, c, d, 0, 0, 0, curmat));
}
else if (coord[i]->find("/") != string::npos)
{
int t[3];
sscanf(coord[i]->c_str(), "f %d/%d/%d %d/%d/%d %d/%d/%d", &a, &t[0], &b, &c, &t[1], &b, &d, &t[2], &b);
faces.push_back(new face(b, a, c, d, t[0], t[1], t[2], curmat));
}
else
{
sscanf(coord[i]->c_str(), "f %d %d %d", &a, &b, &c);
faces.push_back(new face(-1, a, b, c, 0, 0, 0, curmat));
}
}
}
//Use material_name
else if ((*coord[i])[0] == 'u' && (*coord[i])[1] == 's' && (*coord[i])[2] == 'e')
{
char tmp[200];
//Read the name of the material to tmp
sscanf(coord[i]->c_str(), "usemtl %s", tmp);
//Go through all of the materials
for (int i = 0; i<materials.size(); i++)
{
//And compare the tmp with the name of the material
if (strcmp(materials[i]->name.c_str(), tmp) == 0)
{
//If it's equal then set the current material to that
curmat = i;
break;
}
}
}
//Material library, a file, which contain all of the materials
else if ((*coord[i])[0] == 'm' && (*coord[i])[1] == 't' && (*coord[i])[2] == 'l' && (*coord[i])[3] == 'l')
{
char filen[200];
//Read the fileName
sscanf(coord[i]->c_str(), "mtllib %s", filen);
//Open the file
ifstream mtlin(filen);
//If not opened, show a error message, clean all memory, then return with -1
if (!mtlin.is_open())
{
cout << "connot open the material file" << endl;
clean();
return -1;
}
//We use materials
ismaterial = true;
//Contain the line of the file
vector<string> tmp;
char c[200];
while (!mtlin.eof())
{
//Read all lines to tmp
mtlin.getline(c, 200);
tmp.push_back(c);
}
//Name of the material
char name[200];
//fileName of the texture
char fileName[200];
//Colors, shininess, etc
float amb[3], dif[3], spec[3], alpha, ns, ni;
int illum;
unsigned int texture;
//Do we already have a material read in to these variables?
bool ismat = false;
//Set fileName to nullbyte character
strcpy(fileName, "\0");
//Go through all lines of the mtllib file
for (int i = 0; i<tmp.size(); i++)
{
//Ignore comments
if (tmp[i][0] == '#')
continue;
//New material
if (tmp[i][0] == 'n' && tmp[i][1] == 'e' && tmp[i][2] == 'w')
{
//If we have a material
if (ismat)
{
//If we have a texture
if (strcmp(fileName, "\0") != 0)
{
//Push back
materials.push_back(new materialObj(name, alpha, ns, ni, dif, amb, spec, illum, texture));
strcpy(fileName, "\0");
}
//Push back, but use -1 to texture
else
{
materials.push_back(new materialObj(name, alpha, ns, ni, dif, amb, spec, illum, -1));
}
}
//We start from a fresh material
ismat = false;
//Read in the name
sscanf(tmp[i].c_str(), "newmtl %s", name);
}
//Shininess
else if (tmp[i][0] == 'N' && tmp[i][1] == 's')
{
sscanf(tmp[i].c_str(), "Ns %f", &ns);
ismat = true;
}
//Ambient
else if (tmp[i][0] == 'K' && tmp[i][1] == 'a')
{
sscanf(tmp[i].c_str(), "Ka %f %f %f", &amb[0], &amb[1], &amb[2]);
ismat = true;
}
//Diffuse
else if (tmp[i][0] == 'K' && tmp[i][1] == 'd')
{
sscanf(tmp[i].c_str(), "Kd %f %f %f", &dif[0], &dif[1], &dif[2]);
ismat = true;
}
//Specular
else if (tmp[i][0] == 'K' && tmp[i][1] == 's')
{
sscanf(tmp[i].c_str(), "Ks %f %f %f", &spec[0], &spec[1], &spec[2]);
ismat = true;
}
//Others
else if (tmp[i][0] == 'N' && tmp[i][1] == 'i')
{
sscanf(tmp[i].c_str(), "Ni %f", &ni);
ismat = true;
}
//Alpha
else if (tmp[i][0] == 'd' && tmp[i][1] == ' ')
{
sscanf(tmp[i].c_str(), "d %f", &alpha);
ismat = true;
}
//Illum (Not Used)
else if (tmp[i][0] == 'i' && tmp[i][1] == 'l')
{
sscanf(tmp[i].c_str(), "illum %d", &illum);
ismat = true;
}
//Texture
else if (tmp[i][0] == 'm' && tmp[i][1] == 'a')
{
sscanf(tmp[i].c_str(), "map_Kd %s", fileName);
//Read the fileName, and use the loadTexture function to load it, and get the id.
texture = loadTexture(fileName);
ismat = true;
}
}
//There is no newmat after the last newmat, so we have to put the last material 'manually'
if (ismat)
{
if (strcmp(fileName, "\0") != 0)
{
materials.push_back(new materialObj(name, alpha, ns, ni, dif, amb, spec, illum, texture));
}
else{
materials.push_back(new materialObj(name, alpha, ns, ni, dif, amb, spec, illum, -1));
}
}
}
//Back to the obj file, texture coorinate
else if ((*coord[i])[0] == 'v' && (*coord[i])[1] == 't')
{
float u, v;
//Read the uv coordinate
sscanf(coord[i]->c_str(), "vt %f %f", &u, &v);
//I push back 1-v instead of normal v, because obj file use the upper left corner as 0,0 coordinate
texturecoordinate.push_back(new texcoordObj(u, 1 - v));
//OpenGL usesvthe bottom left corner as 0, 0, so convert it
istexture = true;
}
}
//If for some reason the material file doesn't contain any material, we don't have a material
if (materials.size() == 0)
ismaterial = false;
//Else we have a material
else
ismaterial = true;
//Debug purposes
//cout << vertex.size() << " " << normals.size() << " " << faces.size() << " " << materials.size() << endl;
//Draw
int num;
//I generate a unique identifier for the list
num = glGenLists(1);
glNewList(num, GL_COMPILE);
//The last material (default -1, which doesn't exist, so we use the first material)
int last = -1;
//Go through all faces
for (int i = 0; i<faces.size(); i++)
{
//If we have a meterial AND the last material is not the same
if (last != faces[i]->mat && ismaterial)
{
//Set all of the material property
float diffuse[] = { materials[faces[i]->mat]->dif[0], materials[faces[i]->mat]->dif[1], materials[faces[i]->mat]->dif[2], 1.0 };
float ambient[] = { materials[faces[i]->mat]->amb[0], materials[faces[i]->mat]->amb[1], materials[faces[i]->mat]->amb[2], 1.0 };
float specular[] = { materials[faces[i]->mat]->spec[0], materials[faces[i]->mat]->spec[1], materials[faces[i]->mat]->spec[2], 1.0 };
glMaterialfv(GL_FRONT, GL_DIFFUSE, diffuse);
glMaterialfv(GL_FRONT, GL_AMBIENT, ambient);
glMaterialfv(GL_FRONT, GL_SPECULAR, specular);
glMaterialf(GL_FRONT, GL_SHININESS, materials[faces[i]->mat]->ns);
//Set the current to last
last = faces[i]->mat;
//if we don't have texture, disable it, else enable it
if (materials[faces[i]->mat]->texture == -1)
glDisable(GL_TEXTURE_2D);
else
{
glEnable(GL_TEXTURE_2D);
//And use it
glBindTexture(GL_TEXTURE_2D, materials[faces[i]->mat]->texture);
}
}
//If quad
if (faces[i]->four)
{
//glBegin(GL_QUADS);
//
////If there are normals
//if (isnormals)
//{
// //Use them
// glNormal3f(normals[faces[i]->facenum - 1]->x, normals[faces[i]->facenum - 1]->y, normals[faces[i]->facenum - 1]->z);
//}
//////If there are textures
////if (istexture && materials[faces[i]->mat]->texture != -1)
////{
// ////Set the texture coorinate
// //glTexCoord2f(texturecoordinate[faces[i]->texcoord[0] - 1]->u, texturecoordinate[faces[i]->texcoord[0] - 1]->v);
////}
//glVertex3f(vertex[faces[i]->faces[0] - 1]->x, vertex[faces[i]->faces[0] - 1]->y, vertex[faces[i]->faces[0] - 1]->z);
///*if (istexture && materials[faces[i]->mat]->texture != -1)
// glTexCoord2f(texturecoordinate[faces[i]->texcoord[1] - 1]->u, texturecoordinate[faces[i]->texcoord[1] - 1]->v);*/
//glVertex3f(vertex[faces[i]->faces[1] - 1]->x, vertex[faces[i]->faces[1] - 1]->y, vertex[faces[i]->faces[1] - 1]->z);
///*if (istexture && materials[faces[i]->mat]->texture != -1)
// glTexCoord2f(texturecoordinate[faces[i]->texcoord[2] - 1]->u, texturecoordinate[faces[i]->texcoord[2] - 1]->v);*/
//glVertex3f(vertex[faces[i]->faces[2] - 1]->x, vertex[faces[i]->faces[2] - 1]->y, vertex[faces[i]->faces[2] - 1]->z);
///*if (istexture && materials[faces[i]->mat]->texture != -1)
// glTexCoord2f(texturecoordinate[faces[i]->texcoord[3] - 1]->u, texturecoordinate[faces[i]->texcoord[3] - 1]->v);*/
//glVertex3f(vertex[faces[i]->faces[3] - 1]->x, vertex[faces[i]->faces[3] - 1]->y, vertex[faces[i]->faces[3] - 1]->z);
//glEnd();
}
else
{
glBegin(GL_TRIANGLES);
//If there are normals
if (isnormals)
glNormal3f(normals[faces[i]->facenum - 1]->x, normals[faces[i]->facenum - 1]->y, normals[faces[i]->facenum - 1]->z);
//if (istexture && materials[faces[i]->mat]->texture != -1)
//glTexCoord2f(texturecoordinate[faces[i]->texcoord[0] - 1]->u, texturecoordinate[faces[i]->texcoord[0] - 1]->v);
glVertex3f(vertex[faces[i]->faces[0] - 1]->x, vertex[faces[i]->faces[0] - 1]->y, vertex[faces[i]->faces[0] - 1]->z);
//if (istexture && materials[faces[i]->mat]->texture != -1)
//glTexCoord2f(texturecoordinate[faces[i]->texcoord[1] - 1]->u, texturecoordinate[faces[i]->texcoord[1] - 1]->v);
glVertex3f(vertex[faces[i]->faces[1] - 1]->x, vertex[faces[i]->faces[1] - 1]->y, vertex[faces[i]->faces[1] - 1]->z);
//if (istexture && materials[faces[i]->mat]->texture != -1)
//glTexCoord2f(texturecoordinate[faces[i]->texcoord[2] - 1]->u, texturecoordinate[faces[i]->texcoord[2] - 1]->v);
glVertex3f(vertex[faces[i]->faces[2] - 1]->x, vertex[faces[i]->faces[2] - 1]->y, vertex[faces[i]->faces[2] - 1]->z);
glEnd();
}
}
glEndList();
clean();
lists.push_back(num);
return num;
}