diff --git a/apps/nexus/metric.h b/apps/nexus/metric.h
index 8b0e60ce..0116308c 100644
--- a/apps/nexus/metric.h
+++ b/apps/nexus/metric.h
@@ -24,6 +24,9 @@
   History
 
 $Log: not supported by cvs2svn $
+Revision 1.7  2005/02/20 19:49:44  ponchio
+cleaning (a bit more).
+
 Revision 1.6  2005/02/20 18:07:01  ponchio
 cleaning.
 
@@ -79,13 +82,15 @@ namespace nxs {
       if(culling) {
 	float remote = frustum.Remoteness(sph.Center(), sph.Radius());      
 	if(remote > 0) {
-	  //TODO remoteness is bugged when the sphere is really close
-	  //FIX it!
+	  // TODO FIXME remoteness is bugged... (not much only bit
+	  //if we are close to the surface, the projection of
+	  //the bounding sphere in screen space comes out too small
+	  //just using resolution and radius. Im too lazy to fix it.
 	  if(frustum.IsOutside(sph.Center(), sph.Radius()))
 	    visible = false;
 	  error /= remote;
 	} else if(entry.cone.Backface(sph, frustum.ViewPoint())) {
-	  visible = false;
+	  //visible = false;
 	}
       }
       return error;
diff --git a/apps/nexus/normalscone.cpp b/apps/nexus/normalscone.cpp
index cd6e95af..7b9d963b 100644
--- a/apps/nexus/normalscone.cpp
+++ b/apps/nexus/normalscone.cpp
@@ -155,7 +155,7 @@ void NCone3s::Import(const ANCone3f &c) {
 bool NCone3s::Backface(const vcg::Sphere3f &sphere, 
 		       const vcg::Point3f &view) const {
   vcg::Point3f norm(n[0]/32766.0f, n[1]/32766.0f, n[2]/32766.0f);
-  vcg::Point3f d = (sphere.Center() + norm * sphere.Radius()) - view;
+  vcg::Point3f d = (sphere.Center() - norm * sphere.Radius()) - view;
   norm *= n[3]/3276.0f;
 
   float f = d * norm;
@@ -167,7 +167,7 @@ bool NCone3s::Backface(const vcg::Sphere3f &sphere,
 bool NCone3s::Frontface(const vcg::Sphere3f &sphere, 
 			const vcg::Point3f &view) const {
   vcg::Point3f norm(n[0]/32766.0f, n[1]/32766.0f, n[2]/32766.0f);
-  vcg::Point3f d = (sphere.Center() - norm * sphere.Radius()) - view;
+  vcg::Point3f d = (sphere.Center() + norm * sphere.Radius()) - view;
   norm *= n[3]/3276.0f;
   
   float f = -d * norm;