First checkin for OpenMesh 2.0

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

Core/IO/exporter/BaseExporter.hh

@@ -0,0 +1,114 @@
+/*===========================================================================*\
+ *                                                                           *
+ *                               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 MeshWriter exporter modules
+//
+//=============================================================================
+
+
+#ifndef __BASEEXPORTER_HH__
+#define __BASEEXPORTER_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 {
+
+
+//=== EXPORTER ================================================================
+
+
+/**
+   Base class for exporter modules.
+   The exporter modules provide an interface between the writer modules and
+   the target data structure. 
+*/
+
+class BaseExporter
+{
+public:
+
+  virtual ~BaseExporter() { }
+   
+
+  // get vertex data
+  virtual Vec3f  point(VertexHandle _vh)    const = 0;
+  virtual Vec3f  normal(VertexHandle _vh)   const = 0;
+  virtual Vec3uc color(VertexHandle _vh)    const = 0;
+  virtual Vec4uc colorA(VertexHandle _vh)   const = 0;
+  virtual Vec2f  texcoord(VertexHandle _vh) const = 0;
+
+  
+  // get face data
+  virtual unsigned int 
+  get_vhandles(FaceHandle _fh, 
+	       std::vector<VertexHandle>& _vhandles) const=0;
+  virtual Vec3f  normal(FaceHandle _fh)      const = 0;
+  virtual Vec3uc color (FaceHandle _fh)      const = 0;
+  virtual Vec4uc colorA(FaceHandle _fh)      const = 0;  
+
+  // get reference to base kernel
+  virtual const BaseKernel* kernel() { return 0; }
+
+
+  // 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;
+
+
+  // property information
+  virtual bool is_triangle_mesh()     const { return false; }
+  virtual bool has_vertex_normals()   const { return false; }
+  virtual bool has_vertex_colors()    const { return false; }
+  virtual bool has_vertex_texcoords() const { return false; }      
+  virtual bool has_face_normals()     const { return false; }
+  virtual bool has_face_colors()      const { return false; }
+};
+
+
+//=============================================================================
+} // namespace IO
+} // namespace OpenMesh
+//=============================================================================
+#endif
+//=============================================================================