First checkin for OpenMesh 2.0

git-svn-id: http://www.openmesh.org/svnrepo/OpenMesh/trunk@2 fdac6126-5c0c-442c-9429-916003d36597

Tools/VDPM/VFront.cc

@@ -0,0 +1,95 @@
+/*===========================================================================*\
+ *                                                                           *
+ *                               OpenMesh                                    *
+ *      Copyright (C) 2001-2003 by Computer Graphics Group, RWTH Aachen      *
+ *                           www.openmesh.org                                *
+ *                                                                           *
+ *---------------------------------------------------------------------------* 
+ *                                                                           *
+ *                                License                                    *
+ *                                                                           *
+ *  This library is free software; you can redistribute it and/or modify it  *
+ *  under the terms of the GNU Lesser General Public License as published    *
+ *  by the Free Software Foundation, version 2.1.                            *
+ *                                                                           *
+ *  This library is distributed in the hope that it will be useful, but      *
+ *  WITHOUT ANY WARRANTY; without even the implied warranty of               *
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU        *
+ *  Lesser General Public License for more details.                          *
+ *                                                                           *
+ *  You should have received a copy of the GNU Lesser General Public         *
+ *  License along with this library; if not, write to the Free Software      *
+ *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.                *
+ *                                                                           *
+\*===========================================================================*/
+
+//=============================================================================
+//
+//  CLASS newClass - IMPLEMENTATION
+//
+//=============================================================================
+
+
+//== INCLUDES =================================================================
+
+#include <OpenMesh/Tools/VDPM/VFront.hh>
+
+//== NAMESPACES ===============================================================
+
+namespace OpenMesh {
+namespace VDPM {
+
+//== IMPLEMENTATION ========================================================== 
+
+
+VFront::VFront()
+{  
+}
+
+
+void
+VFront::
+add(VHierarchyNodeHandle _node_handle)
+{
+  front_location_[_node_handle.idx()] = front_.insert(front_.end(), _node_handle);
+}
+
+
+void
+VFront::
+remove(VHierarchyNodeHandle _node_handle)
+{
+  VHierarchyNodeHandleListIter node_it = front_location_[_node_handle.idx()];
+  VHierarchyNodeHandleListIter next_it = front_.erase(node_it);
+  front_location_[_node_handle.idx()] = front_.end();
+
+  if (front_it_ == node_it)
+    front_it_ = next_it;
+}
+
+bool
+VFront::
+is_active(VHierarchyNodeHandle _node_handle)
+{
+  return  (front_location_[_node_handle.idx()] != front_.end()) ? true : false;
+}
+
+void 
+VFront::
+init(VHierarchyNodeHandleContainer &_roots, unsigned int _n_details)
+{
+  unsigned int i;
+
+  front_location_.resize(_roots.size() + 2*_n_details);
+  for (i=0; i<front_location_.size(); ++i)
+    front_location_[i] = front_.end();
+
+  for (i=0; i<_roots.size(); ++i)
+    add(_roots[i]);
+}
+
+
+//=============================================================================
+} // namespace VDPM
+} // namespace OpenMesh
+//=============================================================================