map iso. set line width of VertexArray after every rebuild

fixes BZDNG-77

git-svn-id: https://dng.biozentrum.unibas.ch/svn/openstructure/trunk@1790 5a81b35b-ba03-0410-adc8-b2c5c5119f08

modules/gfx/src/map_iso.cc

@@ -119,6 +119,7 @@ void MapIso::OnRenderModeChange()
     render_mode_=RenderMode::SIMPLE;
     va_.SetLighting(false);
     va_.SetCullFace(false);
+    va_.SetLineWidth(this->GetLineWidth());
     va_.SetMode(0x2); // only lines
     va_.SetTwoSided(true);
   }