Equalizer  1.6.1
eqPly/vertexBufferBase.h
1 
2 /* Copyright (c) 2007, Tobias Wolf <twolf@access.unizh.ch>
3  * 2008-2012, Stefan Eilemann <eile@equalizergraphics.com>
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions are met:
7  *
8  * - Redistributions of source code must retain the above copyright notice, this
9  * list of conditions and the following disclaimer.
10  * - Redistributions in binary form must reproduce the above copyright notice,
11  * this list of conditions and the following disclaimer in the documentation
12  * and/or other materials provided with the distribution.
13  * - Neither the name of Eyescale Software GmbH nor the names of its
14  * contributors may be used to endorse or promote products derived from this
15  * software without specific prior written permission.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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28 
29 
30  Header file of the abstract VertexBufferBase class.
31 */
32 
33 
34 #ifndef MESH_VERTEXBUFFERBASE_H
35 #define MESH_VERTEXBUFFERBASE_H
36 
37 
38 #include "typedefs.h"
39 #include <fstream>
40 
41 namespace eqPly
42 {
43  class VertexBufferDist;
44 }
45 
46 namespace mesh
47 {
48  // defined elsewhere
49  class VertexData;
50  class VertexBufferData;
51  class VertexBufferState;
52 
53  /* The abstract base class for all kinds of kd-tree nodes. */
55  {
56  public:
57  virtual ~VertexBufferBase() {};
58 
59  virtual void draw( VertexBufferState& state ) const = 0;
60  void drawBoundingSphere( VertexBufferState& state ) const;
61  virtual Index getNumberOfVertices() const = 0;
62 
63  const BoundingSphere& getBoundingSphere() const
64  { return _boundingSphere; }
65 
66  const float* getRange() const { return &_range[0]; }
67 
68  virtual const VertexBufferBase* getLeft() const { return 0; }
69  virtual const VertexBufferBase* getRight() const { return 0; }
70 
71  virtual const BoundingSphere& updateBoundingSphere() = 0;
72 
73  protected:
74  VertexBufferBase() : _boundingSphere( 0.0f )
75  {
76  _range[0] = 0.0f;
77  _range[1] = 1.0f;
78  }
79 
80  virtual void toStream( std::ostream& os )
81  {
82  os.write( reinterpret_cast< char* >( &_boundingSphere ),
83  sizeof( BoundingSphere ) );
84  os.write( reinterpret_cast< char* >( &_range ), sizeof( Range ) );
85  }
86 
87  virtual void fromMemory( char** addr, VertexBufferData& globalData )
88  {
89  memRead( reinterpret_cast< char* >( &_boundingSphere ), addr,
90  sizeof( BoundingSphere ) );
91  memRead( reinterpret_cast< char* >( &_range ), addr,
92  sizeof( Range ) );
93  }
94 
95  virtual void setupTree( VertexData& data, const Index start,
96  const Index length, const Axis axis,
97  const size_t depth,
98  VertexBufferData& globalData ) = 0;
99 
100  virtual void updateRange() = 0;
101 
102  BoundingSphere _boundingSphere;
103  Range _range;
104  friend class eqPly::VertexBufferDist;
105 
106  private:
107  };
108 }
109 
110 #endif // MESH_VERTEXBUFFERBASE_H
Holds the final kd-tree data, sorted and reindexed.
co::Object to distribute a model, holds a VertexBufferBase node.