First checkin for OpenMesh 2.0

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

Tools/Decimater/ModProgMeshT.hh

@@ -0,0 +1,180 @@
+//=============================================================================
+//
+//                               OpenMesh
+//        Copyright (C) 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.
+//
+//   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.
+//
+//-----------------------------------------------------------------------------
+//
+//   $Revision: 1802 $
+//   $Date: 2008-05-19 11:55:07 +0200 (Mo, 19. Mai 2008) $
+//
+//=============================================================================
+
+/** \file ModProgMeshT.hh
+
+ */
+
+//=============================================================================
+//
+//  CLASS ModProgMeshT
+//
+//=============================================================================
+
+#ifndef OPENMESH_TOOLS_MODPROGMESHT_HH
+#define OPENMESH_TOOLS_MODPROGMESHT_HH
+
+
+//== INCLUDES =================================================================
+
+#include <OpenMesh/Tools/Decimater/ModBaseT.hh>
+#include <OpenMesh/Core/Utils/Property.hh>
+
+
+//== NAMESPACE ================================================================
+
+namespace OpenMesh  {
+namespace Decimater {
+
+
+//== CLASS DEFINITION =========================================================
+
+
+/** Collect progressive mesh information while decimating.
+ *
+ *  The progressive mesh data is stored in an internal structure, which
+ *  can be evaluated after the decimation process and (!) before calling
+ *  the garbage collection of the decimated mesh.
+ */
+template <class DecimaterType>
+class ModProgMeshT : public ModBaseT<DecimaterType>
+{
+public:
+
+  DECIMATING_MODULE( ModProgMeshT, DecimaterType, ProgMesh );
+
+  /** Struct storing progressive mesh information
+   *  \see CollapseInfoT, ModProgMeshT
+   */
+  struct Info
+  {
+    /// Initializing constructor copies appropriate handles from
+    /// collapse information \c _ci.
+    Info( const CollapseInfo& _ci )
+      : v0(_ci.v0), v1(_ci.v1), vl(_ci.vl),vr(_ci.vr)
+    {}
+
+    typename Mesh::VertexHandle v0; ///< See CollapseInfoT::v0
+    typename Mesh::VertexHandle v1; ///< See CollapseInfoT::v1
+    typename Mesh::VertexHandle vl; ///< See CollapseInfoT::vl
+    typename Mesh::VertexHandle vr; ///< See CollapseInfoT::vr
+
+  };
+
+  /// Type of the list storing the progressive mesh info Info.
+  typedef std::vector<Info>           InfoList;
+
+
+public:
+
+   /// Constructor
+  ModProgMeshT( DecimaterType &_dec ) : Base(_dec, true)
+  {
+    Base::mesh().add_property( idx_ );
+  }
+
+
+  /// Destructor
+  ~ModProgMeshT()
+  {
+    Base::mesh().remove_property( idx_ );
+  }
+
+  const InfoList&                            pmi() const
+  {
+    return pmi_;
+  }
+
+public: // inherited
+
+
+  /// Stores collapse information in a queue.
+  /// \see infolist()
+  void postprocess_collapse(const CollapseInfo& _ci)
+  {
+    pmi_.push_back( Info( _ci ) );
+  }
+
+
+  bool is_binary(void) const { return true; }
+
+
+public: // specific methods
+
+  /** Write progressive mesh data to a file in proprietary binary format .pm.
+   *
+   *  The methods uses the collected data to write a progressive mesh
+   *  file. It's a binary format with little endian byte ordering:
+   *
+   *  - The first 8 bytes contain the word "ProgMesh".
+   *  - 32-bit int for the number of vertices \c NV in the base mesh.
+   *  - 32-bit int for the number of faces in the base mesh.
+   *  - 32-bit int for the number of halfedge collapses (now vertex splits)
+   *  - Positions of vertices of the base mesh (32-bit float triplets).<br>
+   *    \c [x,y,z][x,y,z]...
+   *  - Triplets of indices (32-bit int) for each triangle (index in the
+   *    list of vertices of the base mesh defined by the positions.<br>
+   *    \c [v0,v1,v2][v0,v1,v2]...
+   *  - For each collapse/split a detail information package made of
+   *    3 32-bit floats for the positions of vertex \c v0, and 3 32-bit
+   *    int indices for \c v1, \c vl, and \c vr.
+   *    The index for \c vl or \c vr might be -1, if the face on this side
+   *    of the edge does not exists.
+   *
+   *  \remark Write file before calling the garbage collection of the mesh.
+   *  \param _ofname Name of the file, where to write the progressive mesh
+   *  \return \c true on success of the operation, else \c false.
+   */
+  bool write( const std::string& _ofname );
+  /// Reference to collected information
+  const InfoList& infolist() const { return pmi_; }
+
+private:
+
+  // hide this method form user
+  void set_binary(bool _b) {}
+
+  InfoList          pmi_;
+  VPropHandleT<int> idx_;
+};
+
+
+//=============================================================================
+} // END_NS_DECIMATER
+} // END_NS_OPENMESH
+//=============================================================================
+#if defined(OM_INCLUDE_TEMPLATES) && !defined(OPENMESH_DECIMATER_MODPROGMESH_CC)
+#define OSG_MODPROGMESH_TEMPLATES
+#include "ModProgMeshT.cc"
+#endif
+//=============================================================================
+#endif // OPENMESH_TOOLS_PROGMESHT_HH defined
+//=============================================================================
+