Fixed range of example that did no longer work

samples/basic/viewer/main.cc

@@ -210,7 +210,7 @@ void advanced_visualization(pm::vertex_attribute<tg::pos3> const& pos)
         gv::view(pos, gv::mapping(vdata).linear(tg::color3::black, tg::color3::red, 0.1f, 0.3f), "vertex data");
 
         // map face data to red (small) to green (big) from 0.05 .. 0.5 (data outside this range is clamped)
-        gv::view(pos, gv::mapping(fdata).linear(tg::color3::red, tg::color3::green, 0.05f, 0.5f).clamped(), "face data");
+        gv::view(pos, gv::mapping(fdata).linear(tg::color3::red, tg::color3::green, 0.00001f, 0.001f).clamped(), "face data");
     }
 
     // masking