Source/System/NodeCores/Drawables/Geometry/Util/OSGKDTreeIntersectProxyAttachment.cpp

   1 /*---------------------------------------------------------------------------*\
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   5  *               Copyright (C) 2000-2006 by the OpenSG Forum                 *
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  28 \*---------------------------------------------------------------------------*/
  29 /*---------------------------------------------------------------------------*\
  30  *                                Changes                                    *
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  37 \*---------------------------------------------------------------------------*/
  38
  39 //---------------------------------------------------------------------------
  40 //  Includes
  41 //---------------------------------------------------------------------------
  42
  43 #include <cstdlib>
  44 #include <cstdio>
  45 #include <boost/cast.hpp>
  46
  47 #include "OSGConfig.h"
  48 #include "OSGKDTreeIntersectProxyAttachment.h"
  49
  50 #include "OSGIntersectAction.h"
  51 #include "OSGIntersectKDTree.h"
  52 #include "OSGGeometry.h"
  53
  54 OSG_BEGIN_NAMESPACE
  55
  56 // Documentation for this class is emitted in the
  57 // OSGKDTreeIntersectProxyAttachmentBase.cpp file.
  58 // To modify it, please change the .fcd file (OSGKDTreeIntersectProxyAttachment.fcd) and
  59 // regenerate the base file.
  60
  61 /***************************************************************************\
  62  *                           Class variables                               *
  63 \***************************************************************************/
  64
  65 /***************************************************************************\
  66  *                           Class methods                                 *
  67 \***************************************************************************/
  68
  69 void KDTreeIntersectProxyAttachment::initMethod(InitPhase ePhase)
  70 {
  71     Inherited::initMethod(ePhase);
  72
  73     if(ePhase == TypeObject::SystemPost)
  74     {
  75     }
  76 }
  77
  78
  79 /***************************************************************************\
  80  *                           Instance methods                              *
  81 \***************************************************************************/
  82
  83 /*-------------------------------------------------------------------------*\
  84  -  private                                                                 -
  85 \*-------------------------------------------------------------------------*/
  86
  87 /*----------------------- constructors & destructors ----------------------*/
  88
  89 KDTreeIntersectProxyAttachment::KDTreeIntersectProxyAttachment(void) :
  90     Inherited()
  91 {
  92 }
  93
  94 KDTreeIntersectProxyAttachment::KDTreeIntersectProxyAttachment(const KDTreeIntersectProxyAttachment &source) :
  95     Inherited(source)
  96 {
  97 }
  98
  99 KDTreeIntersectProxyAttachment::~KDTreeIntersectProxyAttachment(void)
 100 {
 101 }
 102
 103 /*----------------------------- class specific ----------------------------*/
 104
 105 /* virtual */ Action::ResultE
 106 KDTreeIntersectProxyAttachment::intersectEnter(Node *node, Action *action)
 107 {
 108     Action::ResultE  res  = Inherited::intersectEnter(node, action);
 109     IntersectAction *iact =
 110         boost::polymorphic_downcast<IntersectAction *>(action);
 111
 112     Real32 closestHitT = iact->didHit() ? iact->getHitT() : iact->getMaxDist();
 113     Vec3f  hitNormal;
 114     UInt32 hitTriangle;
 115
 116     if(_mfTreeNodes.empty() == false)
 117     {
 118         UInt32 numTris = 0;
 119         bool hit = intersectIntersectKDTree(iact->getLine(),
 120                                             node->getVolume(),
 121                                             _sfGeometry.getValue(),
 122                                             &_mfTreeNodes,
 123                                             &_mfTriIndices,
 124                                             closestHitT,
 125                                             hitNormal,
 126                                             hitTriangle,
 127                                             &numTris    );
 128
 129         if(hit == true)
 130         {
 131             iact->setHit(closestHitT,
 132                          node,
 133                          hitTriangle,
 134                          hitNormal, 0);
 135         }
 136
 137         iact->getStatCollector()->getElem(
 138             IntersectAction::statNTriangles)->add(numTris);
 139     }
 140     else
 141     {
 142         // tree was empty - skip this proxy and use conventional
 143         // intersect
 144         res = Action::Continue;
 145     }
 146
 147     return res;
 148 }
 149
 150 void KDTreeIntersectProxyAttachment::changed(ConstFieldMaskArg whichField,
 151                             UInt32            origin,
 152                             BitVector         details)
 153 {
 154     if(whichField & GeometryFieldMask)
 155     {
 156         editMField(TreeNodesFieldMask,  _mfTreeNodes );
 157         editMField(TriIndicesFieldMask, _mfTriIndices);
 158
 159         _mfTreeNodes .clear();
 160         _mfTriIndices.clear();
 161
 162         buildIntersectKDTree(_sfGeometry.getValue(),
 163                              _sfMaxDepth.getValue(),
 164                              &_mfTreeNodes,
 165                              &_mfTriIndices        );
 166     }
 167
 168     Inherited::changed(whichField, origin, details);
 169 }
 170
 171 void KDTreeIntersectProxyAttachment::dump(      UInt32    ,
 172                                           const BitVector ) const
 173 {
 174     SLOG << "Dump KDTreeIntersectProxyAttachment NI" << std::endl;
 175 }
 176
 177 OSG_END_NAMESPACE