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BSP_FragTree.h

/**
 * $Id: BSP_FragTree.h,v 1.6 2003/01/12 19:48:50 loczar Exp $
 * ***** BEGIN GPL/BL DUAL LICENSE BLOCK *****
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version. The Blender
 * Foundation also sells licenses for use in proprietary software under
 * the Blender License.  See http://www.blender.org/BL/ for information
 * about this.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
 * All rights reserved.
 *
 * The Original Code is: all of this file.
 *
 * Contributor(s): none yet.
 *
 * ***** END GPL/BL DUAL LICENSE BLOCK *****
 */

#ifndef BSP_FragTree_h
#define BSP_FragTree_h

class BSP_FragNode;

#include "MEM_SmartPtr.h"
#include "MEM_NonCopyable.h"
#include "BSP_MeshPrimitives.h"

class BSP_CSGMesh;
class BSP_MeshFragment;
class BSP_CSGISplitter;

class BSP_FragTree : public MEM_NonCopyable
{
public :

      /**
       * Create a new BSP_FragTree allocated
       * on the heap for mesh. Note mesh will 
       * be divided up by this operation. If you
       * want to retain the original mesh make a copy 
       * of it first.
       */
      
      static
            MEM_SmartPtr<BSP_FragTree>
      New(
            BSP_CSGMesh *mesh,
            BSP_CSGISplitter & splitter
      );
      

      /**
       * Push a mesh fragment down the tree,
       * splitting the mesh as it goes. 
       * upon reaching leaves it puts polygons from fragments
       * of type keep into the output fragment.
       */

            void
      Push(
            BSP_MeshFragment *in_frag,
            BSP_MeshFragment *output,
            const BSP_Classification keep,
            const BSP_Classification current,
            const bool dominant,
            BSP_CSGISplitter & splitter
      ); 

            void
      Classify(
            BSP_CSGMesh *mesh,
            BSP_MeshFragment *in_frag,
            BSP_MeshFragment *out_frag,
            BSP_MeshFragment *on_frag,
            BSP_CSGISplitter & splitter
      );


      ~BSP_FragTree(
      );

private :

      friend class BSP_FragNode;

      BSP_FragTree(
      );

      BSP_FragTree(
            BSP_CSGMesh *mesh
      );

            void
      Build(
            BSP_MeshFragment * frag,
            BSP_CSGISplitter & splitter
      );


            void
      Classify(
            BSP_MeshFragment * frag,
            BSP_MeshFragment *in_frag,
            BSP_MeshFragment *out_frag,
            BSP_MeshFragment *on_frag,
            const BSP_Classification current,
            BSP_CSGISplitter & splitter
      );

private :

      /**
       * pointer to the mesh for this tree.
       * Tree is only valid whilst mesh is around.
       */

      BSP_CSGMesh *m_mesh;
      
      /**
       * The node owned by this tree.
       */

      MEM_SmartPtr<BSP_FragNode> m_node;
      
};

#endif


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