bool KAbstractObjParserPrivate::parse()
{
for (;;)
{
switch (nextToken())
{
case PT_ERROR:
qFatal("Encountered an error! Aborting");
return false;
case PT_EOF:
return true;
case PT_VERTEX:
parseVertex();
break;
case PT_TEXTURE:
parseTexture();
break;
case PT_NORMAL:
parseNormal();
break;
case PT_PARAMETER:
parseParameter();
break;
case PT_FACE:
parseFace();
case PT_ENDSTATEMENT:
break;
}
}
}
void parse(std::ifstream& file, ObjStore& obj) {
std::string line;
std::stringstream lineStream;
char firstChar;
std::cout << "Parsing Obj!" << std::endl;
while ( std::getline( file, line ) ) {
// reject empty lines
if ( line.empty() ) {
continue;
}
// make stream from line
lineStream.clear();
lineStream.str(line);
// check first char to determine type
lineStream.get(firstChar);
if (firstChar == 'v') {
parseVertex(lineStream, obj);
}
else if (firstChar == 'f') {
parseFace(lineStream, obj);
}
}
}
void Obj2::load(std::string const& path) {
ifstream file;
string work;
file.open(path.c_str(), ios::in);
//check ouverture
if (!file.good()) {
throw FileError(0,"Error in OBJ load : \n\timpossible to open " + path + ".");
}
objects.clear();
vertices.clear();
//boucle de parcours pour tout le fichier
int cptr = 0;
Object *currentObject = nullptr;
while (!file.eof()) {
cptr++;
file >> work;//premier mot de la ligne
//cas face
if (work == "f") {//on ne désespère pas. un jour on pourra switcher sur des strings. ptt.
if (currentObject == nullptr) throw FileError(1,"Error in OBJ load : \n\tface before first object at line " + to_string(cptr));
getline(file, work);
currentObject->addFace(parseFace(work));
}//cas vertice
else if (work == "v") {
getline(file, work);
addVertex(parseVertex(work));
}//cas objet
else if (work == "o") {
file >> work;
if (currentObject != nullptr) {
currentObject->setDimension((currentObject->nbrFaces() == 6) ? 0 : 1);
addObject(*currentObject);
}currentObject = new Object(work, 1);
}//cas commentaire
else if (work == "#") {
void ModelLoader::parseLine(char *line)
{
//check for an empty string
if(!strlen(line))
{
return;
}
char *linetype;
linetype = strtok(strdup(line), " ");
if(!strcmp(linetype, "v"))
{
parseVertex(line); //line is a vertex
}
else if(!strcmp(linetype, "vn"))
{
parseNormal(line); //line is a normal
}
else if(!strcmp(linetype, "vt"))
{
parseTexel(line); //line is a texel
}
else if(!strcmp(linetype, "f"))
{
parseFace(line); //line is a face
}
return;
}
void WFObject::parseLine(char *line)
{
if(!strlen(line))
{
return;
}
char *lineType;
lineType = strtok(_strdup(line), " ");
// Decide what to do
if(!strcmp(lineType, "v")) // Vertex
{
parseVertex(line);
}
else if (!strcmp(lineType, "vt"))
{
parseTexture(line);
}
else if(!strcmp(lineType, "vn")) // Normal
{
parseNormal(line);
}
else if(!strcmp(lineType, "f")) // Face
{
parseFace(line);
}
return;
}
void Mesh::parseLine(std::stringstream&& sin)
{
std::string s;
sin >> s;
if (s.compare("v") == 0) parseVertex(sin);
else if (s.compare("vt") == 0) parseTexcoord(sin);
else if (s.compare("vn") == 0) parseNormal(sin);
else if (s.compare("f") == 0) parseFace(sin);
}
void Geometry::parseObjFile(const std::string filePath, std::vector<GLfloat>& vboData, std::vector<GLushort>& iboData)
{
//temporary save values in arrays
std::vector<glm::vec3> vertices;
std::vector<glm::vec3> normals;
//save which data vbo already contains
std::list<IndexCombination> combinations;
//save next vbo index to use
GLushort nextVboIndex = 0;
//open file
std::ifstream objFile;
objFile.exceptions(std::ifstream::badbit | std::ifstream::failbit);
objFile.open(filePath);
std::string line;
while (!objFile.eof()) {
try {
std::getline(objFile, line);
}
catch (const std::exception &ex) {
if (!objFile.eof()) {
throw ex;
}
else {
continue;
}
}
std::istringstream lstream(line);
std::string type;
lstream >> type;
if (type.compare("v") == 0) {
parseVertex(lstream, vertices);
}
else if (type.compare("vn") == 0) {
parseNormal(lstream, normals);
}
else if (type.compare("f") == 0) {
parseFace(lstream, vboData, iboData, vertices, normals, &nextVboIndex, combinations);
}
else if (type.compare("s") == 0) {
//ignore line
}
else if (type.compare("o") == 0) {
//ignore line
}
else if (type.compare("#") == 0) {
//ignore line
}
else {
throw std::logic_error("Unknown start of line");
}
}
objFile.close();
}
void parsePolyline()
{
GROUP_BEGIN();
switch(group.code)
{
case(0):
if("VERTEX" == group.type){
parseVertex();
}else if("SEQEND" == group.type){
finished = true;
}
break;
}
GROUP_END();
}
void parseOBJLine(const std::string& line, std::vector<Vertex> &vertexList, std::vector<int> &indexList)
{
std::istringstream iss(line);
std::string key;
iss >> key;
if (key == "v") {
// parse vertex //
Vertex v = parseVertex(iss);
vertexList.push_back(v);
} else if (key == "f") {
// parse face //
unsigned int index;
iss >> index;
indexList.push_back(index);
iss >> index;
indexList.push_back(index);
iss >> index;
indexList.push_back(index);
}
static void emitreducecode(void)
{
int i, j, v1, v2;
set ind1, ind2;
for(i=0; i<vcs.sizet; i++) parsedverts[i]=parseVertex(i,1);
fermprgemit();
formblocks(&n_vrt);
makeprgcode();
for(i=0; i<vcs.sizet; i++) free(parsedverts[i]);
for (i = n_vrt - 1; i >= 1; i--)
{
v1 = prgcode[i-1][0];
v2 = prgcode[i-1][1];
ind1=vertinfo[v1-1].ind;
ind2=vertinfo[v2-1].ind;
r_mult(v1,v2,set_and(ind1,ind2));
vertinfo[MIN(v1,v2)-1].g5 = vertinfo[v1-1].g5 + vertinfo[v2-1].g5;
vertinfo[MIN(v1,v2)-1].ind=
set_aun(set_or(ind1,ind2),set_and(ind1,ind2));
}
for (i = 0; i < vcs.sizet; i++)
for (j = 0; j <vcs.valence[i]; j++)
{ int mom,np;
mom=vcs.vertlist[i][j].moment;
np =vcs.vertlist[i][j].partcl;
if (mom>0 && prtclbase1[np].hlp == 't')
{ writeF("Vrt_1:=Vrt_1*(%s**2",prtclbase1[np].massidnt);
if(prtclbase1[ghostmother(np)].hlp=='*') writeF(")$\n");
else writeF("-p%d.p%d)$\n",mom,mom);
}
}
writeF("%%\n");
}
void ObjFile::read(std::istream& from) {
std::vector<Eigen::Vector4f> points;
std::vector<Eigen::Vector4f> normals;
std::vector<int> indices;
std::vector<int> uvIndices;
std::vector<int> vnIndices;
std::vector<Eigen::Vector3f> uvs;
std::string curLine;
while (!from.eof()) {
std::getline(from, curLine);
utils::trim(&curLine);
if (curLine.compare(0, 2, "v ") == 0) {
points.push_back(parseVertex(curLine));
}
else if (curLine.compare(0, 2, "f ") == 0) {
auto tuple = parseIndex(curLine);
indices.insert(indices.end(), std::get<0>(tuple).begin(), std::get<0>(tuple).end());
uvIndices.insert(uvIndices.end(), std::get<1>(tuple).begin(), std::get<1>(tuple).end());
vnIndices.insert(vnIndices.end(), std::get<2>(tuple).begin(), std::get<2>(tuple).end());
} else if (curLine.compare(0, 3, "vt ") == 0) {
uvs.push_back(parseUV(curLine));
} else if (curLine.compare(0, 3, "vn ") == 0) {
normals.push_back(parseNormal(curLine));
}
}
//std::reverse(indices.begin(), indices.end());
//std::reverse(vnIndices.begin(), vnIndices.end());
//std::reverse(uvIndices.begin(), uvIndices.end());
_points = std::move(points);
_indices = std::move(indices);
_normals = std::move(normals);
_uvIndices = std::move(uvIndices);
_vnIndices = std::move(vnIndices);
_uvs = std::move(uvs);
}
void Model::parseMesh(std::string fileName) {
std::string line;
std::ifstream myFile(fileName.c_str());
if (myFile.is_open()) {
while (getline(myFile, line)) {
if (line.at(0) == 'o') {
meshName = parseName(line);
} else if (line.at(0) == 'v' && line.at(1) == ' ') {
vertexArray.push_back(parseVertex(line));
} else if (line.at(0) == 'f') {
std::vector<std::string> elements = split(line, ' ');
if ((elements.size() - 1) == 4) {
quadArray.push_back(parseFace(elements));
} else if ((elements.size() - 1) == 3) {
triArray.push_back(parseFace(elements));
}
elements.clear();
} else {
// N-Gons
}
}
}
myFile.close();
}
bool ofxOBJModel::load(string path) {
filePath = path;
path = ofToDataPath(path, true);
string line;
for(int i = 0; i < meshes.size(); i++) {
delete meshes[i];
}
meshes.clear();
ObjMesh *currMesh = NULL;
// this is a list of all points
// that we can drop after parsing
vector<ofPoint> points;
// obj file format vertexes are 1-indexed
points.push_back(ofPoint());
ifstream myfile (path.c_str());
if (myfile.is_open()) {
while (! myfile.eof()) {
getline (myfile,line);
// parse the obj format here.
//
// the only things we're interested in is
// lines beginning with 'g' - this says start of new object
// lines beginning with 'v ' - coordinate of a vertex
// lines beginning with 'f ' - specifies a face of a shape
// we take each number before the slash as the index
// of the vertex to join up to create a face.
if(line.find("g ")==0) { // new object definition
currMesh = new ObjMesh(line.substr(2));
meshes.push_back(currMesh);
} else if(line.find("v ")==0) { // new vertex
points.push_back(parseVertex(line));
} else if(line.find("f ")==0) { // face definition
if(currMesh!=NULL) {
line = line.substr(2); // lop off "f "
vector<string> indices = split(line, ' ');
// remove any texcoords (/xxx's)
for(int i = 0; i < indices.size(); i++) {
int slashPos = indices[i].find("/");
if(slashPos!=-1) {
indices[i] = indices[i].substr(0, slashPos);
}
}
ObjFace *face = new ObjFace();
for(int i = 0; i < indices.size(); i++) {
face->points.push_back(points[atoi(indices[i].c_str())]);
}
currMesh->addFace(face);
}
}
}
myfile.close();
printf("Successfully loaded %s\n-----\nVertices: %d\nMeshes: %d\n", path.c_str(), points.size(), meshes.size());
return true;
} else {
printf("Couldn't find the OBJ file %s\n", path.c_str());
return false;
}
}
