nel/src/3d/vegetable_instance_group.cpp

   1 // NeL - MMORPG Framework <http://dev.ryzom.com/projects/nel/>
   2 // Copyright (C) 2010  Winch Gate Property Limited
   3 //
   4 // This program is free software: you can redistribute it and/or modify
   5 // it under the terms of the GNU Affero General Public License as
   6 // published by the Free Software Foundation, either version 3 of the
   7 // License, or (at your option) any later version.
   8 //
   9 // This program is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU Affero General Public License for more details.
  13 //
  14 // You should have received a copy of the GNU Affero General Public License
  15 // along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16
  17 #include "std3d.h"
  18
  19 #include "nel/3d/vegetable_instance_group.h"
  20
  21 #ifdef DEBUG_NEW
  22 #define new DEBUG_NEW
  23 #endif
  24
  25 namespace NL3D
  26 {
  27
  28
  29 // ***************************************************************************
  30 CVegetableInstanceGroup::CVegetableInstanceGroup()
  31 {
  32         _ClipOwner= NULL;
  33         _SortOwner= NULL;
  34         _HasZSortPassInstances= false;
  35         _TriangleQuadrantOrderNumTriangles= 0;
  36         _ULPrec= this;
  37         _ULNext= this;
  38         _ULNumVertices= 0;
  39 }
  40
  41
  42 // ***************************************************************************
  43 CVegetableInstanceGroup::~CVegetableInstanceGroup()
  44 {
  45         unlinkUL();
  46 }
  47
  48
  49 // ***************************************************************************
  50 void                    CVegetableInstanceGroup::linkBeforeUL(CVegetableInstanceGroup *igNext)
  51 {
  52         nlassert(igNext);
  53
  54         // first, unlink others from me. NB: works even if _ULPrec==_ULNext==this.
  55         _ULNext->_ULPrec= _ULPrec;
  56         _ULPrec->_ULNext= _ULNext;
  57         // link to igNext.
  58         _ULNext= igNext;
  59         _ULPrec= igNext->_ULPrec;
  60         // link others to me.
  61         _ULNext->_ULPrec= this;
  62         _ULPrec->_ULNext= this;
  63 }
  64
  65 // ***************************************************************************
  66 void                    CVegetableInstanceGroup::unlinkUL()
  67 {
  68         // unlink others from me. NB: works even if _ULPrec==_ULNext==this.
  69         _ULNext->_ULPrec= _ULPrec;
  70         _ULPrec->_ULNext= _ULNext;
  71         // reset
  72         _ULPrec= this;
  73         _ULNext= this;
  74 }
  75
  76
  77 // ***************************************************************************
  78 CVegetableInstanceGroupReserve::CVegetableInstanceGroupReserve()
  79 {
  80 }
  81
  82
  83 // ***************************************************************************
  84 bool                    CVegetableInstanceGroup::isEmpty() const
  85 {
  86         for(uint i=0; i<NL3D_VEGETABLE_NRDRPASS; i++)
  87         {
  88                 const CVegetableRdrPass &vegetRdrPass= _RdrPass[i];
  89                 // If some triangles to render, the ig is not empty
  90                 if(vegetRdrPass.NTriangles != 0)
  91                         return false;
  92         }
  93
  94         // for all pass, no triangles to render => the ig is empty.
  95         return true;
  96 }
  97
  98
  99
 100 } // NL3D