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Fixed broken indices for some cases of OBJ parsing by using two passes

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This commit is contained in:
Max Limper
2016-08-30 17:25:48 +02:00
parent ffba476751
commit f53429fdeb
2 changed files with 151 additions and 84 deletions
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196
src/OpenMesh/Core/IO/reader/OBJReader.cc
View File

@@ -279,37 +279,29 @@ read_material(std::fstream& _in)
}
return true;
}
//-----------------------------------------------------------------------------
bool
_OBJReader_::
read(std::istream& _in, BaseImporter& _bi, Options& _opt)
read_vertices(std::istream& _in, BaseImporter& _bi, Options& _opt,
std::vector<Vec3f> & normals,
std::vector<Vec3f> & colors,
std::vector<Vec3f> & texcoords3d,
std::vector<Vec2f> & texcoords,
std::vector<VertexHandle> & vertexHandles,
Options & fileOptions)
{
float x, y, z, u, v, w;
float r, g, b;
std::string line;
std::string keyWrd;
float x, y, z, u, v, w;
float r, g, b;
BaseImporter::VHandles vhandles;
std::vector<Vec3f> normals;
std::vector<Vec3f> colors;
std::vector<Vec3f> texcoords3d, face_texcoords3d;
std::vector<Vec2f> texcoords, face_texcoords;
std::vector<VertexHandle> vertexHandles;
std::string matname;
std::stringstream stream, lineData, tmp;
std::stringstream stream;
// Options supplied by the user
Options userOptions = _opt;
// Options collected via file parsing
Options fileOptions;
const Options & userOptions = _opt;
while( _in && !_in.eof() )
{
@@ -332,56 +324,8 @@ read(std::istream& _in, BaseImporter& _bi, Options& _opt)
stream >> keyWrd;
// material file
if (keyWrd == "mtllib")
{
std::string matFile;
// Get the rest of the line, removing leading or trailing spaces
// This will define the filename of the texture
std::getline(stream,matFile);
trimString(matFile);
matFile = path_ + matFile;
//omlog() << "Load material file " << matFile << std::endl;
std::fstream matStream( matFile.c_str(), std::ios_base::in );
if ( matStream ){
if ( !read_material( matStream ) )
omerr() << " Warning! Could not read file properly!\n";
matStream.close();
}else
omerr() << " Warning! Material file '" << matFile << "' not found!\n";
//omlog() << " " << materials_.size() << " materials loaded.\n";
for ( MaterialList::iterator material = materials_.begin(); material != materials_.end(); ++material )
{
// Save the texture information in a property
if ( (*material).second.has_map_Kd() )
_bi.add_texture_information( (*material).second.map_Kd_index() , (*material).second.map_Kd() );
}
}
// usemtl
else if (keyWrd == "usemtl")
{
stream >> matname;
if (materials_.find(matname)==materials_.end())
{
omerr() << "Warning! Material '" << matname
<< "' not defined in material file.\n";
matname="";
}
}
// vertex
else if (keyWrd == "v")
if (keyWrd == "v")
{
stream >> x; stream >> y; stream >> z;
@@ -453,9 +397,123 @@ read(std::istream& _in, BaseImporter& _bi, Options& _opt)
}
}
}
}
return true;
}
//-----------------------------------------------------------------------------
bool
_OBJReader_::
read(std::istream& _in, BaseImporter& _bi, Options& _opt)
{
std::string line;
std::string keyWrd;
std::vector<Vec3f> normals;
std::vector<Vec3f> colors;
std::vector<Vec3f> texcoords3d;
std::vector<Vec2f> texcoords;
std::vector<VertexHandle> vertexHandles;
BaseImporter::VHandles vhandles;
std::vector<Vec3f> face_texcoords3d;
std::vector<Vec2f> face_texcoords;
std::string matname;
std::stringstream stream, lineData, tmp;
// face
// Options supplied by the user
Options userOptions = _opt;
// Options collected via file parsing
Options fileOptions;
// pass 1: read vertices
if ( !read_vertices(_in, _bi, _opt,
normals, colors, texcoords3d, texcoords,
vertexHandles, fileOptions) ){
return false;
}
// reset stream for second pass
_in.clear();
_in.seekg(0, std::ios::beg);
// pass 2: read vertices
while( _in && !_in.eof() )
{
std::getline(_in,line);
if ( _in.bad() ){
omerr() << " Warning! Could not read file properly!\n";
return false;
}
// Trim Both leading and trailing spaces
trimString(line);
// comment
if ( line.size() == 0 || line[0] == '#' || isspace(line[0]) ) {
continue;
}
stream.str(line);
stream.clear();
stream >> keyWrd;
// material file
if (keyWrd == "mtllib")
{
std::string matFile;
// Get the rest of the line, removing leading or trailing spaces
// This will define the filename of the texture
std::getline(stream,matFile);
trimString(matFile);
matFile = path_ + matFile;
//omlog() << "Load material file " << matFile << std::endl;
std::fstream matStream( matFile.c_str(), std::ios_base::in );
if ( matStream ){
if ( !read_material( matStream ) )
omerr() << " Warning! Could not read file properly!\n";
matStream.close();
}else
omerr() << " Warning! Material file '" << matFile << "' not found!\n";
//omlog() << " " << materials_.size() << " materials loaded.\n";
for ( MaterialList::iterator material = materials_.begin(); material != materials_.end(); ++material )
{
// Save the texture information in a property
if ( (*material).second.has_map_Kd() )
_bi.add_texture_information( (*material).second.map_Kd_index() , (*material).second.map_Kd() );
}
}
// usemtl
else if (keyWrd == "usemtl")
{
stream >> matname;
if (materials_.find(matname)==materials_.end())
{
omerr() << "Warning! Material '" << matname
<< "' not defined in material file.\n";
matname="";
}
}
// faces
else if (keyWrd == "f")
{
int component(0), nV(0);

9
src/OpenMesh/Core/IO/reader/OBJReader.hh
View File

@@ -170,8 +170,17 @@ private:
bool read_material( std::fstream& _in );
private:
bool read_vertices(std::istream& _in, BaseImporter& _bi, Options& _opt,
std::vector<Vec3f> & normals,
std::vector<Vec3f> & colors,
std::vector<Vec3f> & texcoords3d,
std::vector<Vec2f> & texcoords,
std::vector<VertexHandle> & vertexHandles,
Options & fileOptions);
std::string path_;
};