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mtllib fix 

some tools do not add the mtllib line in the header, and simply call the mtl file like the main object file. Added a fall-back code to cover these cases
This commit is contained in:
Marco Callieri 2018-02-01 17:45:01 +01:00
parent e5cdab35e4
commit 2fdad915cc
1 changed files with 9 additions and 0 deletions
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9
wrap/io_trimesh/import_obj.h
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@ -615,6 +615,15 @@ namespace vcg {
}
else if ((header.compare("usemtl")==0) && (tokens.size() > 1)) // material usage
{
// emergency check. If there are no materials, the materail library failed to load or was not specified
// but there are tools that save the material library with the same name of the file, but do not add the
// "mtllib" definition in the header. So, we can try to see if this is the case
if ((materials.size() == 1)&&(materials[0].materialName == "")){
std::string materialFileName(filename);
materialFileName.replace(materialFileName.end()-4, materialFileName.end(), ".mtl");
LoadMaterials(materialFileName.c_str(), materials, m.textures);
}
std::string materialName;
if (tokens.size() == 2)
materialName = tokens[1]; //play it safe