// -------------------------------------------------------------------
// Set a new material definition as the current material.
void ObjFileParser::getNewMaterial()
{
m_DataIt = getNextToken<DataArrayIt>(m_DataIt, m_DataItEnd);
m_DataIt = getNextWord<DataArrayIt>(m_DataIt, m_DataItEnd);
if( m_DataIt == m_DataItEnd ) {
return;
}
char *pStart = &(*m_DataIt);
std::string strMat( pStart, *m_DataIt );
while( m_DataIt != m_DataItEnd && IsSpaceOrNewLine( *m_DataIt ) ) {
++m_DataIt;
}
std::map<std::string, ObjFile::Material*>::iterator it = m_pModel->m_MaterialMap.find( strMat );
if ( it == m_pModel->m_MaterialMap.end() )
{
// Show a warning, if material was not found
DefaultLogger::get()->warn("OBJ: Unsupported material requested: " + strMat);
m_pModel->m_pCurrentMaterial = m_pModel->m_pDefaultMaterial;
}
else
{
// Set new material
if ( needsNewMesh( strMat ) )
{
createMesh();
}
m_pModel->m_pCurrentMesh->m_uiMaterialIndex = getMaterialIndex( strMat );
}
m_DataIt = skipLine<DataArrayIt>( m_DataIt, m_DataItEnd, m_uiLine );
}
// -------------------------------------------------------------------
// Copy the next word in a temporary buffer
void ObjFileParser::copyNextWord(char *pBuffer, size_t length)
{
size_t index = 0;
m_DataIt = getNextWord<DataArrayIt>(m_DataIt, m_DataItEnd);
while( m_DataIt != m_DataItEnd && !IsSpaceOrNewLine( *m_DataIt ) ) {
pBuffer[index] = *m_DataIt;
index++;
if( index == length - 1 ) {
break;
}
++m_DataIt;
}
ai_assert(index < length);
pBuffer[index] = '\0';
}
// -------------------------------------------------------------------
// Stores values for a new object instance, name will be used to
// identify it.
void ObjFileParser::getObjectName()
{
m_DataIt = getNextToken<DataArrayIt>(m_DataIt, m_DataItEnd);
if( m_DataIt == m_DataItEnd ) {
return;
}
char *pStart = &(*m_DataIt);
while( m_DataIt != m_DataItEnd && !IsSpaceOrNewLine( *m_DataIt ) ) {
++m_DataIt;
}
std::string strObjectName(pStart, &(*m_DataIt));
if (!strObjectName.empty())
{
// Reset current object
m_pModel->m_pCurrent = NULL;
// Search for actual object
for (std::vector<ObjFile::Object*>::const_iterator it = m_pModel->m_Objects.begin();
it != m_pModel->m_Objects.end();
++it)
{
if ((*it)->m_strObjName == strObjectName)
{
m_pModel->m_pCurrent = *it;
break;
}
}
// Allocate a new object, if current one was not found before
if( NULL == m_pModel->m_pCurrent ) {
createObject( strObjectName );
}
}
m_DataIt = skipLine<DataArrayIt>( m_DataIt, m_DataItEnd, m_uiLine );
}
// ------------------------------------------------------------------------------------------------
void Tokenize(TokenList& output_tokens, const char* input)
{
ai_assert(input);
// line and column numbers numbers are one-based
unsigned int line = 1;
unsigned int column = 1;
bool comment = false;
bool in_double_quotes = false;
bool pending_data_token = false;
const char* token_begin = NULL, *token_end = NULL;
for (const char* cur = input;*cur;column += (*cur == '\t' ? ASSIMP_FBX_TAB_WIDTH : 1), ++cur) {
const char c = *cur;
if (IsLineEnd(c)) {
comment = false;
column = 0;
++line;
}
if(comment) {
continue;
}
if(in_double_quotes) {
if (c == '\"') {
in_double_quotes = false;
token_end = cur;
ProcessDataToken(output_tokens,token_begin,token_end,line,column);
pending_data_token = false;
}
continue;
}
switch(c)
{
case '\"':
if (token_begin) {
TokenizeError("unexpected double-quote", line, column);
}
token_begin = cur;
in_double_quotes = true;
continue;
case ';':
ProcessDataToken(output_tokens,token_begin,token_end,line,column);
comment = true;
continue;
case '{':
ProcessDataToken(output_tokens,token_begin,token_end, line, column);
output_tokens.push_back(new_Token(cur,cur+1,TokenType_OPEN_BRACKET,line,column));
continue;
case '}':
ProcessDataToken(output_tokens,token_begin,token_end,line,column);
output_tokens.push_back(new_Token(cur,cur+1,TokenType_CLOSE_BRACKET,line,column));
continue;
case ',':
if (pending_data_token) {
ProcessDataToken(output_tokens,token_begin,token_end,line,column,TokenType_DATA,true);
}
output_tokens.push_back(new_Token(cur,cur+1,TokenType_COMMA,line,column));
continue;
case ':':
if (pending_data_token) {
ProcessDataToken(output_tokens,token_begin,token_end,line,column,TokenType_KEY,true);
}
else {
TokenizeError("unexpected colon", line, column);
}
continue;
}
if (IsSpaceOrNewLine(c)) {
if (token_begin) {
// peek ahead and check if the next token is a colon in which
// case this counts as KEY token.
TokenType type = TokenType_DATA;
for (const char* peek = cur; *peek && IsSpaceOrNewLine(*peek); ++peek) {
if (*peek == ':') {
type = TokenType_KEY;
cur = peek;
break;
}
}
ProcessDataToken(output_tokens,token_begin,token_end,line,column,type);
}
pending_data_token = false;
}
else {
token_end = cur;
if (!token_begin) {
token_begin = cur;
}
pending_data_token = true;
}
}
}
// -------------------------------------------------------------------
// Get values for a new face instance
void ObjFileParser::getFace(aiPrimitiveType type)
{
copyNextLine(m_buffer, BUFFERSIZE);
if (m_DataIt == m_DataItEnd)
return;
char *pPtr = m_buffer;
char *pEnd = &pPtr[BUFFERSIZE];
pPtr = getNextToken<char*>(pPtr, pEnd);
if (pPtr == pEnd || *pPtr == '\0')
return;
std::vector<unsigned int> *pIndices = new std::vector<unsigned int>;
std::vector<unsigned int> *pTexID = new std::vector<unsigned int>;
std::vector<unsigned int> *pNormalID = new std::vector<unsigned int>;
bool hasNormal = false;
const int vSize = m_pModel->m_Vertices.size();
const int vtSize = m_pModel->m_TextureCoord.size();
const int vnSize = m_pModel->m_Normals.size();
const bool vt = (!m_pModel->m_TextureCoord.empty());
const bool vn = (!m_pModel->m_Normals.empty());
int iStep = 0, iPos = 0;
while (pPtr != pEnd)
{
iStep = 1;
if (IsLineEnd(*pPtr))
break;
if (*pPtr=='/' )
{
if (type == aiPrimitiveType_POINT) {
DefaultLogger::get()->error("Obj: Separator unexpected in point statement");
}
if (iPos == 0)
{
//if there are no texture coordinates in the file, but normals
if (!vt && vn) {
iPos = 1;
iStep++;
}
}
iPos++;
}
else if( IsSpaceOrNewLine( *pPtr ) )
{
iPos = 0;
}
else
{
//OBJ USES 1 Base ARRAYS!!!!
const int iVal = atoi( pPtr );
// increment iStep position based off of the sign and # of digits
int tmp = iVal;
if (iVal < 0)
++iStep;
while ( ( tmp = tmp / 10 )!=0 )
++iStep;
if ( iVal > 0 )
{
// Store parsed index
if ( 0 == iPos )
{
pIndices->push_back( iVal-1 );
}
else if ( 1 == iPos )
{
pTexID->push_back( iVal-1 );
}
else if ( 2 == iPos )
{
pNormalID->push_back( iVal-1 );
hasNormal = true;
}
else
{
reportErrorTokenInFace();
}
}
else if ( iVal < 0 )
{
// Store relatively index
if ( 0 == iPos )
{
pIndices->push_back( vSize + iVal );
}
else if ( 1 == iPos )
{
pTexID->push_back( vtSize + iVal );
}
else if ( 2 == iPos )
{
pNormalID->push_back( vnSize + iVal );
hasNormal = true;
}
else
{
reportErrorTokenInFace();
}
}
}
pPtr += iStep;
}
if ( pIndices->empty() )
{
DefaultLogger::get()->error("Obj: Ignoring empty face");
m_DataIt = skipLine<DataArrayIt>( m_DataIt, m_DataItEnd, m_uiLine );
delete pTexID;
return;
}
ObjFile::Face *face = new ObjFile::Face( pIndices, pNormalID, pTexID, type );
// Set active material, if one set
if (NULL != m_pModel->m_pCurrentMaterial)
face->m_pMaterial = m_pModel->m_pCurrentMaterial;
else
face->m_pMaterial = m_pModel->m_pDefaultMaterial;
// Create a default object, if nothing is there
if ( NULL == m_pModel->m_pCurrent )
createObject( "defaultobject" );
// Assign face to mesh
if ( NULL == m_pModel->m_pCurrentMesh )
{
createMesh();
}
// Store the face
m_pModel->m_pCurrentMesh->m_Faces.push_back( face );
m_pModel->m_pCurrentMesh->m_uiNumIndices += (unsigned int)face->m_pVertices->size();
m_pModel->m_pCurrentMesh->m_uiUVCoordinates[ 0 ] += (unsigned int)face->m_pTexturCoords[0].size();
if( !m_pModel->m_pCurrentMesh->m_hasNormals && hasNormal )
{
m_pModel->m_pCurrentMesh->m_hasNormals = true;
}
// Skip the rest of the line
m_DataIt = skipLine<DataArrayIt>( m_DataIt, m_DataItEnd, m_uiLine );
}
