Source/System/NodeCores/Drawables/Nurbs/Internal/OSGpredicates.h

   1 /* GTS - Library for the manipulation of triangulated surfaces
   2  * Copyright (C) 1999 St�phane Popinet
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Library General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library 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 GNU
  12  * Library General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Library General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17  * Boston, MA 02111-1307, USA.
  18  */
  19 /* Header file for robust predicates by Jonathan Richard Shewchuk */
  20
  21 #ifndef __OSG_PREDICATES_H__
  22 #define __OSG_PREDICATES_H__
  23
  24 #ifdef __sgi
  25 #pragma once
  26 #endif
  27
  28 #include "OSGDrawableDef.h"
  29 #include "OSGConfig.h"
  30
  31 OSG_BEGIN_NAMESPACE
  32
  33 //#ifdef __cplusplus
  34 //extern "C" {
  35 //#endif
  36
  37 OSG_DRAWABLE_DLLMAPPING
  38 double orient2d            (double * pa,
  39                             double * pb,
  40                             double * pc);
  41
  42 OSG_DRAWABLE_DLLMAPPING
  43 double orient3d            (double * pa,
  44                             double * pb,
  45                             double * pc,
  46                             double * pd);
  47
  48 OSG_DRAWABLE_DLLMAPPING
  49 double incircle            (double * pa,
  50                             double * pb,
  51                             double * pc,
  52                             double * pd);
  53
  54 OSG_DRAWABLE_DLLMAPPING
  55 double insphere            (double * pa,
  56                             double * pb,
  57                             double * pc,
  58                             double * pd,
  59                             double * pe);
  60
  61 OSG_DRAWABLE_DLLMAPPING
  62 void exactinit             ();
  63
  64 //#ifdef __cplusplus
  65 //}
  66 //#endif
  67 OSG_END_NAMESPACE
  68
  69 #endif /* __OSG_PREDICATES_H__ */