dll/opengl/glu32/src/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 "nurbsconsts.h"
  44
  45
  46 /*--------------------------------------------------------------------------
  47  * Renderhints::Renderhints - set all window specific options
  48  *--------------------------------------------------------------------------
  49  */
  50 Renderhints::Renderhints()
  51 {
  52     display_method      = N_FILL;
  53     errorchecking       = N_MSG;
  54     subdivisions        = 6.0;
  55     tmp1                = 0.0;
  56     displaydomain       = 0;
  57     maxsubdivisions     = (int) subdivisions;
  58     wiretris            = 0;
  59     wirequads           = 0;
  60 }
  61
  62 void
  63 Renderhints::init( void )
  64 {
  65     maxsubdivisions = (int) subdivisions;
  66     if( maxsubdivisions < 0 ) maxsubdivisions = 0;
  67
  68
  69     if( display_method == N_FILL ) {
  70         wiretris = 0;
  71         wirequads = 0;
  72     } else if( display_method == N_OUTLINE_TRI ) {
  73         wiretris = 1;
  74         wirequads = 0;
  75     } else if( display_method == N_OUTLINE_QUAD ) {
  76         wiretris = 0;
  77         wirequads = 1;
  78     } else {
  79         wiretris = 1;
  80         wirequads = 1;
  81     }
  82 }
  83
  84 int
  85 Renderhints::isProperty( long property )
  86 {
  87     switch ( property ) {
  88         case N_DISPLAY:
  89         case N_ERRORCHECKING:
  90         case N_SUBDIVISIONS:
  91         case N_TMP1:
  92             return 1;
  93         default:
  94             return 0;
  95     }
  96 }
  97
  98 REAL
  99 Renderhints::getProperty( long property )
 100 {
 101     switch ( property ) {
 102         case N_DISPLAY:
 103             return display_method;
 104         case N_ERRORCHECKING:
 105             return errorchecking;
 106         case N_SUBDIVISIONS:
 107             return subdivisions;
 108         case N_TMP1:
 109             return tmp1;
 110         default:
 111             abort();
 112             return -1;  //not necessary, needed to shut up compiler
 113     }
 114 }
 115
 116 void
 117 Renderhints::setProperty( long property, REAL value )
 118 {
 119     switch ( property ) {
 120         case N_DISPLAY:
 121             display_method = value;
 122             break;
 123         case N_ERRORCHECKING:
 124             errorchecking = value;
 125             break;
 126         case N_SUBDIVISIONS:
 127             subdivisions = value;
 128             break;
 129         case N_TMP1: /* unused */
 130             tmp1 = value;
 131             break;
 132         default:
 133             abort();
 134             break;
 135     }
 136 }