src/glu/sgi/libnurbs/internals/nurbstess.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  * nurbstess.h
  37  *
  38  * $Date: 2003/10/15 21:11:13 $ $Revision: 1.3 $
  39  * $Header: /home/krh/git/sync/mesa-cvs-repo/Mesa/src/glu/sgi/libnurbs/internals/nurbstess.h,v 1.3 2003/10/15 21:11:13 brianp Exp $
  40  */
  41
  42 #ifndef __glunurbstess_h_
  43 #define __glunurbstess_h_
  44
  45 #include "mysetjmp.h"
  46 #include "subdivider.h"
  47 #include "renderhints.h"
  48 #include "backend.h"
  49 #include "maplist.h"
  50 #include "reader.h"
  51 #include "nurbsconsts.h"
  52
  53 struct Knotvector;
  54 class Quilt;
  55 class DisplayList;
  56 class BasicCurveEvaluator;
  57 class BasicSurfaceEvaluator;
  58
  59 class NurbsTessellator {
  60 public:
  61                         NurbsTessellator( BasicCurveEvaluator &c,
  62                                           BasicSurfaceEvaluator &e );
  63                         virtual ~NurbsTessellator( void );
  64
  65     void                getnurbsproperty( long, INREAL * );
  66     void                getnurbsproperty( long, long, INREAL * );
  67     void                setnurbsproperty( long, INREAL );
  68     void                setnurbsproperty( long, long, INREAL );
  69     void                setnurbsproperty( long, long, INREAL * );
  70     void                setnurbsproperty( long, long, INREAL *, long, long );
  71
  72     // called before a tessellation begins/ends
  73     virtual void        bgnrender( void );
  74     virtual void        endrender( void );
  75
  76     // called to make a display list of the output vertices
  77     virtual void        makeobj( int n );
  78     virtual void        closeobj( void );
  79
  80     // called when a error occurs
  81     virtual void        errorHandler( int );
  82
  83     void                bgnsurface( long );
  84     void                endsurface( void );
  85     void                bgntrim( void );
  86     void                endtrim( void );
  87     void                bgncurve( long );
  88     void                endcurve( void );
  89     void                pwlcurve( long, INREAL[], long, long );
  90     void                nurbscurve( long, INREAL[], long, INREAL[], long, long );
  91     void                nurbssurface( long, INREAL[], long, INREAL[], long, long,
  92                             INREAL[], long, long, long );
  93
  94     void                defineMap( long, long, long );
  95     void                redefineMaps( void );
  96
  97     // recording of input description
  98     void                discardRecording( void * );
  99     void *              beginRecording( void );
 100     void                endRecording( void );
 101     void                playRecording( void * );
 102
 103     //for optimizing untrimmed nurbs in the case of domain distance sampling
 104     void set_domain_distance_u_rate(REAL u_rate);
 105     void set_domain_distance_v_rate(REAL v_rate);
 106     void set_is_domain_distance_sampling(int flag);
 107
 108
 109 protected:
 110     Renderhints         renderhints;
 111     Maplist             maplist;
 112     Backend             backend;
 113
 114 private:
 115
 116     void                resetObjects( void );
 117     int                 do_check_knots( Knotvector *, char * );
 118     void                do_nurbserror( int );
 119     void                do_bgncurve( O_curve * );
 120     void                do_endcurve( void );
 121     void                do_freeall( void );
 122     void                do_freecurveall( O_curve * );
 123     void                do_freebgntrim( O_trim * );
 124     void                do_freebgncurve( O_curve * );
 125     void                do_freepwlcurve( O_pwlcurve * );
 126     void                do_freenurbscurve( O_nurbscurve * );
 127     void                do_freenurbssurface( O_nurbssurface * );
 128     void                do_freebgnsurface( O_surface * );
 129     void                do_bgnsurface( O_surface * );
 130     void                do_endsurface( void );
 131     void                do_bgntrim( O_trim * );
 132     void                do_endtrim( void );
 133     void                do_pwlcurve( O_pwlcurve * );
 134     void                do_nurbscurve( O_nurbscurve * );
 135     void                do_nurbssurface( O_nurbssurface * );
 136     void                do_freenurbsproperty( Property * );
 137     void                do_setnurbsproperty( Property * );
 138     void                do_setnurbsproperty2( Property * );
 139
 140     Subdivider          subdivider;
 141     JumpBuffer*         jumpbuffer;
 142     Pool                o_pwlcurvePool;
 143     Pool                o_nurbscurvePool;
 144     Pool                o_curvePool;
 145     Pool                o_trimPool;
 146     Pool                o_surfacePool;
 147     Pool                o_nurbssurfacePool;
 148     Pool                propertyPool;
 149 public:
 150     Pool                quiltPool;
 151 private:
 152     TrimVertexPool      extTrimVertexPool;
 153
 154     int                 inSurface;              /* bgnsurface seen */
 155     int                 inCurve;                /* bgncurve seen */
 156     int                 inTrim;                 /* bgntrim seen */
 157     int                 isCurveModified;        /* curve changed */
 158     int                 isTrimModified;         /* trim curves changed */
 159     int                 isSurfaceModified;      /* surface changed */
 160     int                 isDataValid;            /* all data is good */
 161     int                 numTrims;               /* valid trim regions */
 162     int                 playBack;
 163
 164     O_trim**            nextTrim;               /* place to link o_trim */
 165     O_curve**           nextCurve;              /* place to link o_curve */
 166     O_nurbscurve**      nextNurbscurve;         /* place to link o_nurbscurve */
 167     O_pwlcurve**        nextPwlcurve;           /* place to link o_pwlcurve */
 168     O_nurbssurface**    nextNurbssurface;       /* place to link o_nurbssurface */
 169
 170     O_surface*          currentSurface;
 171     O_trim*             currentTrim;
 172     O_curve*            currentCurve;
 173
 174     DisplayList         *dl;
 175
 176 };
 177
 178 #endif /* __glunurbstess_h_ */