Well, I've finally found the problem. It is in Model::readOBJ() method in obj.cpp file.
The problem is that sscanf() reads data from *.obj file in default locale. Qt has the following code inside its QCoreApplication constructor: Code: setlocale(LC_ALL, ""); // use correct char set mapping Which means setting the entire default locale (http://www.cplusplus.com/reference/clibrary/clocale/setlocale/). Given that, sscanf starts to interpret '.' character as alphabetic in some locales (including mine, ru_RU.UTF-8 where floats are divided by ',' symbol). So it reads values (for instance, vertex coordinates) until the first '.' appears. Now it stops, x coord gets integer part of float and the rest y and z gets 0. Then, duplicate search in TriStripifyVisitor finds many, many duplicate and only 100 or so unique vertices. As a result, stripify() function works extremely slow with such an input data. I think it should be set "C" locale before reading *.obj file in readOBJ as *.obj format is so restrictive and not dependent of current user locale. ------------------ Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=41097#41097 _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
