ObjParser::ObjParser(const char* baseDir, const char* objFilename) {
m_baseDir = (char*)malloc(sizeof(char) * (strlen(baseDir) + 1));
strcpy(m_baseDir, baseDir);
m_objFilename = (char*)malloc(sizeof(char) * (strlen(m_baseDir) + strlen(objFilename) + 1));
strcpy(m_objFilename, m_baseDir);
strcat(m_objFilename, objFilename);
parseObj();
parseMtl();
}
void
ObjModelLoader::firstPass()
{
string lastType = "";
fs::path my_path(mPriFName);
fs::ifstream objFile;
objFile.open(my_path, ios::in);
char line[200];
vector<string> tokens;
while (objFile.getline(line, 200)) {
tokens = splitSpace(string(line));
if (tokens[0] == ("o")) {
//++grpCount;
lastType = "o";
}
else if (tokens[0] == ("g")) {
// removeSpecialCharsFromName(tokens[1]);
string longname("");
for (unsigned int i = 1; i < tokens.size(); ++i) {
longname.append(tokens[i]);
longname.append("_");
}
longname.erase(longname.end() - 1);
mPriModelPtr->addGrpPtr(new MetaGroup(longname));
lastType = "g";
}
else if (tokens[0] == ("mtllib")) {
string longname("");
for (unsigned int i = 1; i < tokens.size(); ++i) {
longname.append(tokens[i]);
longname.append(" ");
}
longname.erase(longname.end() - 1);
parseMtl(fs::path(my_path.parent_path() / longname));
lastType = "mtllib";
}
else if (tokens[0] == ("v")) {
V3f* v = new V3f(atof(tokens[1].c_str()), atof(tokens[2].c_str()),
atof(tokens[3].c_str()));
mPriModelPtr->addVPtr(v);
lastType = "v";
}
else if (tokens[0] == ("vt")) {
V3f* t = new V3f(atof(tokens[1].c_str()), atof(tokens[2].c_str()),
atof(tokens[3].c_str()));
mPriModelPtr->addTPtr(t);
lastType = "vt";
}
else if (tokens[0] == ("vn")) {
V3b *n = new V3b((char) 127.0f * atof(tokens[1].c_str()),
(char) 127.0f * atof(tokens[2].c_str()), (char) 127.0f * atof(tokens[3].c_str()));
mPriModelPtr->addNPtr(n);
lastType = "vn";
}
else if (tokens[0] == ("f")) {
lastType = "f";
}
}
objFile.close();
// if we have not read any groups in, create a default group
if (mPriModelPtr->getGrpCount() < 1) {
mPriModelPtr->addGrpPtr(new MetaGroup());
}
}
bool OBJParser::parseLine(YFile* file, const wchar_t* lineContent)
{
Assert(NULL != file);
Assert(NULL != lineContent);
OBJ_SPECIFIER specifier = OBJ_OTEHR;
getOBJSpecifier(lineContent, &specifier);
switch(specifier)
{
case OBJ_COMMENT:
break;
case MTLLIB:
{
wchar_t pathStr[MAX_PATH_LEN];
YString::Scan(lineContent, L"%*s %s", pathStr);
wchar_t mtlFilePath[MAX_PATH_LEN];
YString::GetParentDirPath(mtlFilePath, _countof(mtlFilePath), mFilePath);
YString::Concat(mtlFilePath, _countof(mtlFilePath), L"/", pathStr);
//YString::GetFullPath(mtlFilePath, _countof(mtlFilePath));
parseMtl(mtlFilePath);
break;
}
case VERT_POS:
{
wchar_t lineStrs[3][MAX_STR_LEN];
YString::Scan(lineContent, L"%*c %s %s %s", &lineStrs[0], &lineStrs[1], &lineStrs[2]);
mPosData.push_back(Vector3((float)_wtof(lineStrs[0]), (float)_wtof(lineStrs[1]), (float)_wtof(lineStrs[2])));
break;
}
case VERT_UV:
{
wchar_t lineStrs[2][MAX_STR_LEN];
YString::Scan(lineContent, L"%*s %s %s", &lineStrs[0], &lineStrs[1]);
//uvData.push_back(Vector2(1.0f - (float)_wtof(lineStrs[0]), 1.0f - (float)_wtof(lineStrs[1])));
uvData.push_back(Vector2((float)_wtof(lineStrs[0]), 1.0f - (float)_wtof(lineStrs[1])));
break;
}
case VERT_NORMAL:
{
wchar_t lineStrs[3][MAX_STR_LEN];
YString::Scan(lineContent, L"%*c %s %s %s", &lineStrs[0], &lineStrs[1], &lineStrs[2]);
normalData.push_back(Vector3((float)_wtof(lineStrs[0]), (float)_wtof(lineStrs[1]), (float)_wtof(lineStrs[2])));
break;
}
case GROUP:
{
break;
}
case MESH_MTL:
{
determineDataContentType();
std::vector<std::wstring> blockContent;
blockContent.push_back(lineContent);
wchar_t blockLineContent[MAX_STR_LEN];
while(file->ReadLine(blockLineContent, _countof(blockLineContent)) != NULL)
{
OBJ_SPECIFIER specifier = OBJ_OTEHR;
getOBJSpecifier(blockLineContent, &specifier);
if(specifier == MESH_MTL || specifier == VERT_POS || specifier == VERT_UV || specifier == VERT_NORMAL)
break;
blockContent.push_back(blockLineContent);
}
parseTrianglesBlock(blockContent);
if(!file->ReachEnd())
parseLine(file, blockLineContent);
break;
}
case OBJ_OTEHR:
{
break;
}
default:
_Assert(false);
}
Exit:
return false;
}