Equalizer 1.0

vertexBufferNode.h

00001 
00002 /* Copyright (c) 2007, Tobias Wolf <twolf@access.unizh.ch>
00003  * Copyright (c) 2008, Stefan Eilemann <eile@equalizergraphics.com>
00004  *
00005  * Redistribution and use in source and binary forms, with or without
00006  * modification, are permitted provided that the following conditions are met:
00007  *
00008  * - Redistributions of source code must retain the above copyright notice, this
00009  *   list of conditions and the following disclaimer.
00010  * - Redistributions in binary form must reproduce the above copyright notice,
00011  *   this list of conditions and the following disclaimer in the documentation
00012  *   and/or other materials provided with the distribution.
00013  * - Neither the name of Eyescale Software GmbH nor the names of its
00014  *   contributors may be used to endorse or promote products derived from this
00015  *   software without specific prior written permission.
00016  *
00017  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
00018  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
00019  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
00020  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
00021  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
00022  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
00023  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
00024  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
00025  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
00026  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
00027  * POSSIBILITY OF SUCH DAMAGE.
00028   
00029     
00030     Header file of the VertexBufferNode class.
00031 */
00032 
00033 
00034 #ifndef MESH_VERTEXBUFFERNODE_H
00035 #define MESH_VERTEXBUFFERNODE_H
00036 
00037 
00038 #include "vertexBufferBase.h"
00039 
00040 namespace mesh 
00041 {
00042     /*  The class for regular (non-leaf) kd-tree nodes.  */
00043     class VertexBufferNode : public VertexBufferBase
00044     {
00045     public:
00046         VertexBufferNode() : _left( 0 ), _right( 0 ) {}
00047         virtual ~VertexBufferNode();
00048 
00049         virtual void render( VertexBufferState& state ) const;
00050         virtual Index getNumberOfVertices() const
00051             {return _left->getNumberOfVertices()+_right->getNumberOfVertices();}
00052 
00053         virtual const VertexBufferBase* getLeft() const { return _left; }
00054         virtual const VertexBufferBase* getRight() const { return _right; }
00055 
00056     protected:
00057         virtual void toStream( std::ostream& os );
00058         virtual void fromMemory( char** addr, VertexBufferData& globalData );
00059 
00060         virtual void setupTree( VertexData& data, const Index start,
00061                                 const Index length, const Axis axis,
00062                                 const size_t depth, 
00063                                 VertexBufferData& globalData );
00064         virtual const BoundingSphere& updateBoundingSphere();
00065         virtual void updateRange();
00066 
00067     private:
00068 
00069         VertexBufferBase*   _left;
00070         VertexBufferBase*   _right;
00071         friend class eqPly::VertexBufferDist;
00072     };
00073 }
00074 
00075 
00076 #endif // MESH_VERTEXBUFFERNODE_H
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