Smoother Update, added function to respect feature vertices/lines/edges on the Mesh

Function skip_features()
Defaults to false

git-svn-id: http://www.openmesh.org/svnrepo/OpenMesh/trunk@86 fdac6126-5c0c-442c-9429-916003d36597

Tools/Smoother/SmootherT.cc

@@ -58,7 +58,8 @@ namespace Smoother {
 template <class Mesh>
 SmootherT<Mesh>::
 SmootherT(Mesh& _mesh)
-  : mesh_(_mesh)
+  : mesh_(_mesh),
+    skip_features_(false)
 {
   // request properties
   mesh_.request_vertex_status();
@@ -154,6 +155,30 @@ set_active_vertices()
     active = ((nothing_selected || mesh_.status(v_it).selected())
 	          && !mesh_.is_boundary(v_it)
 	          && !mesh_.status(v_it).locked());
+
+    if ( skip_features_ ) {
+
+      active = active && !mesh_.status(v_it).feature();
+
+      typename Mesh::VertexOHalfedgeIter  voh_it(mesh_,v_it);
+      for ( ; voh_it ; ++voh_it ) {
+
+        // If the edge is a feature edge, skip the current vertex while smoothing
+        if ( mesh_.status(mesh_.edge_handle(voh_it.handle())).feature() )
+          active = false;
+
+        typename Mesh::FaceHandle fh1 = mesh_.face_handle(voh_it.handle() );
+        typename Mesh::FaceHandle fh2 = mesh_.face_handle(mesh_.opposite_halfedge_handle(voh_it.handle() ) );
+
+        // If one of the faces is a feature, lock current vertex
+        if ( fh1.is_valid() && mesh_.status( fh1 ).feature() )
+          active = false;
+        if ( fh2.is_valid() && mesh_.status( fh2 ).feature() )
+          active = false;
+
+      }
+    }
+
     mesh_.property(is_active_, v_it) = active;
   }
 

Tools/Smoother/SmootherT.hh

@@ -85,16 +85,20 @@ public:
 
 public:
 
-  // constructor & destructor
+  /** \brief constructor & destructor
+   *
+   * @param _mesh Reference to the mesh
+   */
   SmootherT( Mesh& _mesh );
   virtual ~SmootherT();
 
 
 public:
 
-  /// Initialize smoother
-  /// \param _comp Determine component to smooth
-  /// \param _cont 
+  /** Initialize smoother
+   * \param _comp Determine component to smooth
+   * \param _cont Determine Continuity
+   */
   void initialize(Component _comp, Continuity _cont);
 
 
@@ -105,6 +109,12 @@ public:
   void disable_local_error_check();
   //@}
 
+  /** \brief enable or disable feature handling
+   *
+   * @param _state true  : If features are selected on the mesh, they will be left unmodified\n
+   *               false : Features will be ignored
+   */
+  void skip_features( bool _state ){ skip_features_ = _state; };
 
   /// Do _n smoothing iterations
   virtual void smooth(unsigned int _n);
@@ -158,6 +168,7 @@ protected:
 protected:
 
   Mesh&  mesh_;
+  bool   skip_features_;
 
 
 private: