src/glu/sgi/libnurbs/internals/renderhints.cc

   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  * renderhints.c++
  37  *
  38  * $Date: 2001/03/17 00:25:41 $ $Revision: 1.1 $
  39  * $Header: /home/krh/git/sync/mesa-cvs-repo/Mesa/src/glu/sgi/libnurbs/internals/renderhints.cc,v 1.1 2001/03/17 00:25:41 brianp Exp $
  40  */
  41
  42 #include "glimports.h"
  43 #include "mystdio.h"
  44 #include "renderhints.h"
  45 #include "defines.h"
  46 #include "nurbsconsts.h"
  47
  48
  49 /*--------------------------------------------------------------------------
  50  * Renderhints::Renderhints - set all window specific options
  51  *--------------------------------------------------------------------------
  52  */
  53 Renderhints::Renderhints()
  54 {
  55     display_method      = N_FILL;
  56     errorchecking       = N_MSG;
  57     subdivisions        = 6.0;
  58     tmp1                = 0.0;
  59 }
  60
  61 void
  62 Renderhints::init( void )
  63 {
  64     maxsubdivisions = (int) subdivisions;
  65     if( maxsubdivisions < 0 ) maxsubdivisions = 0;
  66
  67
  68     if( display_method == N_FILL ) {
  69         wiretris = 0;
  70         wirequads = 0;
  71     } else if( display_method == N_OUTLINE_TRI ) {
  72         wiretris = 1;
  73         wirequads = 0;
  74     } else if( display_method == N_OUTLINE_QUAD ) {
  75         wiretris = 0;
  76         wirequads = 1;
  77     } else {
  78         wiretris = 1;
  79         wirequads = 1;
  80     }
  81 }
  82
  83 int
  84 Renderhints::isProperty( long property )
  85 {
  86     switch ( property ) {
  87         case N_DISPLAY:
  88         case N_ERRORCHECKING:
  89         case N_SUBDIVISIONS:
  90         case N_TMP1:
  91             return 1;
  92         default:
  93             return 0;
  94     }
  95 }
  96
  97 REAL
  98 Renderhints::getProperty( long property )
  99 {
 100     switch ( property ) {
 101         case N_DISPLAY:
 102             return display_method;
 103         case N_ERRORCHECKING:
 104             return errorchecking;
 105         case N_SUBDIVISIONS:
 106             return subdivisions;
 107         case N_TMP1:
 108             return tmp1;
 109         default:
 110             abort();
 111             return -1;  //not necessary, needed to shut up compiler
 112     }
 113 }
 114
 115 void
 116 Renderhints::setProperty( long property, REAL value )
 117 {
 118     switch ( property ) {
 119         case N_DISPLAY:
 120             display_method = value;
 121             break;
 122         case N_ERRORCHECKING:
 123             errorchecking = value;
 124             break;
 125         case N_SUBDIVISIONS:
 126             subdivisions = value;
 127             break;
 128         case N_TMP1: /* unused */
 129             tmp1 = value;
 130             break;
 131         default:
 132             abort();
 133             break;
 134     }
 135 }