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