nevrax.org : docs

00001 
+00007 /* Copyright, 2001 Nevrax Ltd.
+00008  *
+00009  * This file is part of NEVRAX NEL.
+00010  * NEVRAX NEL is free software; you can redistribute it and/or modify
+00011  * it under the terms of the GNU General Public License as published by
+00012  * the Free Software Foundation; either version 2, or (at your option)
+00013  * any later version.
+00014 
+00015  * NEVRAX NEL is distributed in the hope that it will be useful, but
+00016  * WITHOUT ANY WARRANTY; without even the implied warranty of
+00017  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+00018  * General Public License for more details.
+00019 
+00020  * You should have received a copy of the GNU General Public License
+00021  * along with NEVRAX NEL; see the file COPYING. If not, write to the
+00022  * Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+00023  * MA 02111-1307, USA.
+00024  */
+00025 
+00026 #include "std3d.h"
+00027 
+00028 #include "3d/vegetable_instance_group.h"
+00029 
+00030 
+00031 namespace NL3D 
+00032 {
+00033 
+00034 
+00035 // ***************************************************************************
+00036 CVegetableInstanceGroup::CVegetableInstanceGroup()
+00037 {
+00038         _ClipOwner= NULL;
+00039         _SortOwner= NULL;
+00040         _HasZSortPassInstances= false;
+00041         _TriangleQuadrantOrderNumTriangles= 0;
+00042         _ULPrec= this;
+00043         _ULNext= this;
+00044         _ULNumVertices= 0;
+00045 }
+00046 
+00047 
+00048 // ***************************************************************************
+00049 CVegetableInstanceGroup::~CVegetableInstanceGroup()
+00050 {
+00051         unlinkUL();
+00052 }
+00053 
+00054 
+00055 // ***************************************************************************
+00056 void                    CVegetableInstanceGroup::linkBeforeUL(CVegetableInstanceGroup *igNext)
+00057 {
+00058         nlassert(igNext);
+00059 
+00060         // first, unlink others from me. NB: works even if _ULPrec==_ULNext==this.
+00061         _ULNext->_ULPrec= _ULPrec;
+00062         _ULPrec->_ULNext= _ULNext;
+00063         // link to igNext.
+00064         _ULNext= igNext;
+00065         _ULPrec= igNext->_ULPrec;
+00066         // link others to me.
+00067         _ULNext->_ULPrec= this;
+00068         _ULPrec->_ULNext= this;
+00069 }
+00070 
+00071 // ***************************************************************************
+00072 void                    CVegetableInstanceGroup::unlinkUL()
+00073 {
+00074         // unlink others from me. NB: works even if _ULPrec==_ULNext==this.
+00075         _ULNext->_ULPrec= _ULPrec;
+00076         _ULPrec->_ULNext= _ULNext;
+00077         // reset
+00078         _ULPrec= this;
+00079         _ULNext= this;
+00080 }
+00081 
+00082 
+00083 // ***************************************************************************
+00084 CVegetableInstanceGroupReserve::CVegetableInstanceGroupReserve()
+00085 {
+00086 }
+00087 
+00088 
+00089 // ***************************************************************************
+00090 bool                    CVegetableInstanceGroup::isEmpty() const
+00091 {
+00092         for(uint i=0; i<NL3D_VEGETABLE_NRDRPASS; i++)
+00093         {
+00094                 const CVegetableRdrPass &vegetRdrPass= _RdrPass[i];
+00095                 // If some triangles to render, the ig is not empty
+00096                 if(vegetRdrPass.NTriangles != 0)
+00097                         return false;
+00098         }
+00099 
+00100         // for all pass, no triangles to render => the ig is empty.
+00101         return true;
+00102 }
+00103 
+00104 
+00105 
+00106 } // NL3D
+
vegetable_instance_group.cpp
