First checkin for OpenMesh 2.0

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

Core/IO/reader/STLReader.hh

@@ -0,0 +1,124 @@
+/*===========================================================================*\
+ *                                                                           *
+ *                               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 2.1.                            *
+ *                                                                           *
+ *  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.                *
+ *                                                                           *
+\*===========================================================================*/
+
+
+//=============================================================================
+//
+//  Implements an reader module for STL files
+//
+//=============================================================================
+
+
+#ifndef __STLREADER_HH__
+#define __STLREADER_HH__
+
+
+//=== INCLUDES ================================================================
+
+
+#include <stdio.h>
+#include <string>
+
+#include <OpenMesh/Core/System/config.h>
+#include <OpenMesh/Core/Utils/SingletonT.hh>
+#include <OpenMesh/Core/IO/reader/BaseReader.hh>
+
+#ifndef WIN32
+#include <string.h>
+#endif
+
+
+//== NAMESPACES ===============================================================
+
+
+namespace OpenMesh {
+namespace IO {
+
+//== FORWARDS =================================================================
+
+class BaseImporter;
+
+//== IMPLEMENTATION ===========================================================
+
+
+/** 
+    Implementation of the STL format reader. This class is singleton'ed by 
+    SingletonT to STLReader.
+*/
+class _STLReader_ : public BaseReader
+{
+public:
+
+  // constructor
+  _STLReader_();
+
+
+  std::string get_description() const 
+  { return "Stereolithography Interface Format"; }
+  std::string get_extensions() const { return "stl stla stlb"; }
+
+  bool read(const std::string& _filename, 
+	    BaseImporter& _bi,
+            Options& _opt);
+
+
+  /** Set the threshold to be used for considering two point to be equal.
+      Can be used to merge small gaps */
+  void set_epsilon(float _eps) { eps_=_eps; }
+
+  /// Returns the threshold to be used for considering two point to be equal.
+  float epsilon() const { return eps_; }
+
+
+  
+private:
+
+  enum STL_Type { STLA, STLB, NONE };
+  STL_Type check_stl_type(const std::string& _filename) const;
+
+  bool read_stla(const std::string& _filename, BaseImporter& _bi) const;
+  bool read_stlb(const std::string& _filename, BaseImporter& _bi) const;
+
+
+private:
+
+  float eps_;
+};
+
+
+//== TYPE DEFINITION ==========================================================
+
+
+/// Declare the single entity of the STL reader
+extern _STLReader_  __STLReaderInstance;
+_STLReader_&  STLReader();
+
+
+//=============================================================================
+} // namespace IO
+} // namespace OpenMesh
+//=============================================================================
+#endif
+//=============================================================================