hidden objects are no longer selection with the selection tool

fixes BZDNG-72

git-svn-id: https://dng.biozentrum.unibas.ch/svn/openstructure/trunk@1766 5a81b35b-ba03-0410-adc8-b2c5c5119f08

modules/gfx/src/entity.cc

@@ -385,22 +385,31 @@ void Entity::CustomRenderPov(PovState& pov)
 mol::AtomHandle Entity::PickAtom(const geom::Line3& line, Real line_width)
 {
   mol::AtomHandle picked_atom;
+  if (!this->IsVisible())
+    return picked_atom;  
   for (RendererMap::iterator i=renderer_.begin(), 
        e=renderer_.end(); i!=e; ++i) {
     impl::EntityRenderer* r=i->second;
+    if (r->HasDataToRender() && r->IsEnabled()) {
       r->PickAtom(line, line_width, picked_atom);      
     }
+  }
   return picked_atom;
 }
 
 mol::BondHandle Entity::PickBond(const geom::Line3& line, Real line_width)
 {
+
   mol::BondHandle picked_bond;
+  if (!this->IsVisible())
+    return picked_bond;  
   for (RendererMap::iterator i=renderer_.begin(), 
        e=renderer_.end(); i!=e; ++i) {
     impl::EntityRenderer* r=i->second;
+    if (r->HasDataToRender() && r->IsEnabled()) {
       r->PickBond(line, line_width, picked_bond);      
     }
+  }
   return picked_bond;
 }