reactos/lib/glu32/libnurbs/internals/slicer.h

   1 /*
   2 ** License Applicability. Except to the extent portions of this file are
   3 ** made subject to an alternative license as permitted in the SGI Free
   4 ** Software License B, Version 1.1 (the "License"), the contents of this
   5 ** file are subject only to the provisions of the License. You may not use
   6 ** this file except in compliance with the License. You may obtain a copy
   7 ** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
   8 ** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
   9 **
  10 ** http://oss.sgi.com/projects/FreeB
  11 **
  12 ** Note that, as provided in the License, the Software is distributed on an
  13 ** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
  14 ** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
  15 ** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
  16 ** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
  17 **
  18 ** Original Code. The Original Code is: OpenGL Sample Implementation,
  19 ** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
  20 ** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
  21 ** Copyright in any portions created by third parties is as indicated
  22 ** elsewhere herein. All Rights Reserved.
  23 **
  24 ** Additional Notice Provisions: The application programming interfaces
  25 ** established by SGI in conjunction with the Original Code are The
  26 ** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
  27 ** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
  28 ** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
  29 ** Window System(R) (Version 1.3), released October 19, 1998. This software
  30 ** was created using the OpenGL(R) version 1.2.1 Sample Implementation
  31 ** published by SGI, but has not been independently verified as being
  32 ** compliant with the OpenGL(R) version 1.2.1 Specification.
  33 */
  34
  35 /*
  36  * slicer.h
  37  *
  38  * $Date$ $Revision: 1.1 $
  39  * $Header: /cygdrive/c/RCVS/CVS/ReactOS/reactos/lib/glu32/libnurbs/internals/slicer.h,v 1.1 2004/02/02 16:39:12 navaraf Exp $
  40  */
  41
  42 #ifndef __gluslicer_h_
  43 #define __gluslicer_h_
  44
  45 #include "trimregion.h"
  46 #include "mesher.h"
  47 #include "coveandtiler.h"
  48 #include "primitiveStream.h"
  49 #include "rectBlock.h"
  50
  51 class Backend;
  52 class Arc;
  53 class TrimVertex;
  54
  55 class Slicer : public CoveAndTiler, public Mesher {
  56 public:
  57                         Slicer( Backend & );
  58                         ~Slicer( void );
  59     void                slice( Arc_ptr );
  60     void                slice_old( Arc_ptr);
  61     void                slice_new( Arc_ptr );
  62     void                evalStream(primStream* );
  63     void                evalRBArray(rectBlockArray* rbArray, gridWrap* grid);
  64
  65     void                outline( Arc_ptr );
  66     void                setstriptessellation( REAL, REAL );
  67     void                setisolines( int );
  68
  69     void                set_ulinear(int ulinear_flag)
  70       {
  71         ulinear = ulinear_flag;
  72       }
  73     void                set_vlinear(int vlinear_flag)
  74       {
  75         vlinear = vlinear_flag;
  76       }
  77 private:
  78     Backend&            backend;
  79     REAL                oneOverDu;
  80     REAL                du, dv;
  81     int                 isolines;
  82
  83     void                outline( void );
  84     void                initGridlines( void );
  85     void                advanceGridlines( long );
  86
  87     int                ulinear; //indicate whether uorder is 2 or not
  88     int                vlinear; //indicate whether vorder is 2 or not
  89 };
  90 #endif /* __gluslicer_h_ */