Source/System/NodeCores/Drawables/Geometry/Util/OSGIntersectKDTreeNode.h

   1 /*---------------------------------------------------------------------------*\
   2  *                                OpenSG                                     *
   3  *                                                                           *
   4  *                                                                           *
   5  *                Copyright (C) 2011 by the OpenSG Forum                     *
   6  *                                                                           *
   7  *                            www.opensg.org                                 *
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   9  *   contact: dirk@opensg.org, gerrit.voss@vossg.org, jbehr@zgdv.de          *
  10  *                                                                           *
  11 \*---------------------------------------------------------------------------*/
  12 /*---------------------------------------------------------------------------*\
  13  *                                License                                    *
  14  *                                                                           *
  15  * This library is free software; you can redistribute it and/or modify it   *
  16  * under the terms of the GNU Library General Public License as published    *
  17  * by the Free Software Foundation, version 2.                               *
  18  *                                                                           *
  19  * This library is distributed in the hope that it will be useful, but       *
  20  * WITHOUT ANY WARRANTY; without even the implied warranty of                *
  21  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU         *
  22  * Library General Public License for more details.                          *
  23  *                                                                           *
  24  * You should have received a copy of the GNU Library General Public         *
  25  * License along with this library; if not, write to the Free Software       *
  26  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.                 *
  27  *                                                                           *
  28 \*---------------------------------------------------------------------------*/
  29
  30 #ifndef _OSGINTERSECTKDTREENODE_H_
  31 #define _OSGINTERSECTKDTREENODE_H_
  32
  33 #include "OSGConfig.h"
  34 #include "OSGDrawableDef.h"
  35 #include "OSGBaseTypes.h"
  36
  37 OSG_BEGIN_NAMESPACE
  38
  39 class OSG_DRAWABLE_DLLMAPPING IntersectKDTreeNode
  40 {
  41   public:
  42     enum FlagsE
  43     {
  44         AxisX = 0x00,
  45         AxisY = 0x01,
  46         AxisZ = 0x02,
  47         Leaf  = 0x03
  48     };
  49
  50     void   setLeaf    (UInt32 triCount, UInt32 triOffset                );
  51     void   setInterior(FlagsE axis,     UInt32 childOffset, Real32 split);
  52
  53     bool   isLeaf        (void) const;
  54
  55     UInt32 getChildOffset(void) const;
  56     UInt32 getSplitAxis  (void) const;
  57     Real32 getSplit      (void) const;
  58
  59     UInt32 getTriCount   (void) const;
  60     UInt32 getTriOffset  (void) const;
  61
  62   private:
  63
  64     UInt32 _flags :  2;     // both
  65     UInt32 _count : 30;     // child offset / tri count
  66
  67     union
  68     {
  69         UInt32 _triOffset;  // leaf,     triangle indices start
  70         Real32 _split;      // interior, split position
  71     };
  72 };
  73
  74 OSG_DRAWABLE_DLLMAPPING bool
  75 operator==(const IntersectKDTreeNode &lhs, const IntersectKDTreeNode &rhs);
  76
  77 OSG_END_NAMESPACE
  78
  79 #include "OSGIntersectKDTreeNode.inl"
  80
  81 #endif /* _OSGINTERSECTKDTREENODE_H_ */