src/glu/sgi/libnurbs/internals/monotonizer.h

   1 /**************************************************************************
   2  *                                                                        *
   3  *               Copyright (C) 1999, Silicon Graphics, Inc.               *
   4  *                                                                        *
   5  *  These coded instructions, statements, and computer programs  contain  *
   6  *  unpublished  proprietary  information of Silicon Graphics, Inc., and  *
   7  *  are protected by Federal copyright law.  They  may  not be disclosed  *
   8  *  to  third  parties  or copied or duplicated in any form, in whole or  *
   9  *  in part, without the prior written consent of Silicon Graphics, Inc.  *
  10  *                                                                        *
  11  **************************************************************************/
  12
  13 /*
  14  * monotonizer.h
  15  *
  16  * $Header: /home/krh/git/sync/mesa-cvs-repo/Mesa/src/glu/sgi/libnurbs/internals/monotonizer.h,v 1.1 2001/03/17 00:25:41 brianp Exp $
  17  */
  18
  19 #ifndef __glumonotonizer_h_
  20 #define __glumonotonizer_h_
  21
  22 #include "mysetjmp.h"
  23 #include "types.h"
  24
  25 class Arc;
  26 class ArcTessellator;
  27 class Pool;
  28 class Bin;
  29 class PwlArcPool;
  30 class Mapdesc;
  31
  32 class Monotonizer {
  33     ArcTessellator&     arctessellator;
  34     Pool&               arcpool;
  35     Pool&               pwlarcpool;
  36     jmp_buf&            nurbsJmpBuf;
  37
  38     enum dir            { down, same, up, none };
  39     void                tessellate( Arc *, REAL );
  40     void                monotonize( Arc *, Bin & );
  41     int                 isMonotone( Arc * );
  42 public:
  43                         Monotonizer( ArcTessellator& at, Pool& ap, Pool& p, jmp_buf& j )
  44                                 : arctessellator(at), arcpool(ap), pwlarcpool(p), nurbsJmpBuf(j) {}
  45     int                 decompose( Bin &, REAL );
  46 };
  47 #endif /* __glumonotonizer_h_ */