First checkin for OpenMesh 2.0

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

Core/IO/importer/BaseImporter.hh

@@ -0,0 +1,130 @@
+/*===========================================================================*\
+ *                                                                           *
+ *                               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 the baseclass for IOManager importer modules
+//
+//=============================================================================
+
+
+#ifndef __BASEIMPORTER_HH__
+#define __BASEIMPORTER_HH__
+
+
+//=== INCLUDES ================================================================
+
+
+// STL
+#include <vector>
+
+// OpenMesh
+#include <OpenMesh/Core/System/config.h>
+#include <OpenMesh/Core/Geometry/VectorT.hh>
+#include <OpenMesh/Core/Mesh/BaseKernel.hh>
+
+
+//== NAMESPACES ===============================================================
+
+
+namespace OpenMesh {
+namespace IO {
+
+
+//=== IMPLEMENTATION ==========================================================
+
+
+/**  Base class for importer modules. Importer modules provide an
+ *   interface between the loader modules and the target data
+ *   structure. This is basically a wrapper providing virtual versions
+ *   for the required mesh functions.
+ */
+class BaseImporter
+{
+public:
+
+  // base class needs virtual destructor
+  virtual ~BaseImporter() {}
+
+
+  // add a vertex with coordinate \c _point
+  virtual VertexHandle add_vertex(const Vec3f& _point) = 0;
+
+  // add a face with indices _indices refering to vertices
+  typedef std::vector<VertexHandle> VHandles;
+  virtual FaceHandle add_face(const VHandles& _indices) = 0;
+
+  // set vertex normal
+  virtual void set_normal(VertexHandle _vh, const Vec3f& _normal) = 0;
+
+  // set vertex color
+  virtual void set_color(VertexHandle _vh, const Vec3uc& _color) = 0;
+
+  // set vertex color
+  virtual void set_color(VertexHandle _vh, const Vec4uc& _color) = 0;
+
+  // set vertex texture coordinate
+  virtual void set_texcoord(VertexHandle _vh, const Vec2f& _texcoord) = 0;
+
+  // set face normal
+  virtual void set_normal(FaceHandle _fh, const Vec3f& _normal) = 0;
+
+  // set face color
+  virtual void set_color(FaceHandle _fh, const Vec3uc& _color) = 0;
+
+  // set face color
+  virtual void set_color(FaceHandle _fh, const Vec4uc& _color) = 0;
+
+  // get reference to base kernel
+  virtual BaseKernel* kernel() { return 0; }
+
+  virtual bool is_triangle_mesh()     const { return false; }
+
+  // reserve mem for elements
+  virtual void reserve( unsigned int /* nV */,
+		                  unsigned int /* nE */,
+		                  unsigned int /* nF */) {}
+
+  // query number of faces, vertices, normals, texcoords
+  virtual size_t n_vertices()   const = 0;
+  virtual size_t n_faces()      const = 0;
+  virtual size_t n_edges()      const = 0;
+
+
+  // pre-processing
+  virtual void prepare()  {}
+
+  // post-processing
+  virtual void finish()  {}
+};
+
+
+//=============================================================================
+} // namespace IO
+} // namespace OpenMesh
+//=============================================================================
+#endif
+//=============================================================================