- fixed writing face indices in different configurations regarding vertex texture coordinates and vertex normals

- adjusted the intial patch provided by Robert Luo

refs #1560

git-svn-id: http://www.openmesh.org/svnrepo/OpenMesh/trunk@824 fdac6126-5c0c-442c-9429-916003d36597

src/OpenMesh/Core/IO/writer/OBJWriter.cc

@@ -270,6 +270,10 @@ write(std::ostream& _out, BaseExporter& _be, Options _opt, std::streamsize _prec
 
   int lastMat = -1;
 
+  // we do not want to write seperators if we only write vertex indices
+  bool onlyVertices =    !_opt.check(Options::VertexTexCoord)
+                      && !_opt.check(Options::VertexNormal);
+
   // faces (indices starting at 1 not 0)
   for (i=0, nF=_be.n_faces(); i<nF; ++i)
   {
@@ -305,6 +309,7 @@ write(std::ostream& _out, BaseExporter& _be, Options _opt, std::streamsize _prec
       idx = vhandles[j].idx() + 1;
       _out << " " << idx;
 
+      if (!onlyVertices) {
         // write separator
         _out << "/" ;
 
@@ -312,13 +317,14 @@ write(std::ostream& _out, BaseExporter& _be, Options _opt, std::streamsize _prec
         if (_opt.check(Options::VertexTexCoord))
           _out  << idx;
 
+        // write vertex normal index
+        if ( _opt.check(Options::VertexNormal) ) {
           // write separator
           _out << "/" ;
-
-      // write vertex normal index
-      if ( _opt.check(Options::VertexNormal) )
           _out << idx;
         }
+      }
+    }
 
     _out << std::endl;
   }