src/libs/glut/glut_teapot.c

   1 /*
   2  * Copyright 1994-1997 Mark Kilgard, All rights reserved.
   3  * Distributed under the terms of the MIT License.
   4  *
   5  * Authors:
   6  *      Mark Kilgard
   7  */
   8
   9 /**
  10 (c) Copyright 1993, Silicon Graphics, Inc.
  11
  12 ALL RIGHTS RESERVED
  13
  14 Permission to use, copy, modify, and distribute this software
  15 for any purpose and without fee is hereby granted, provided
  16 that the above copyright notice appear in all copies and that
  17 both the copyright notice and this permission notice appear in
  18 supporting documentation, and that the name of Silicon
  19 Graphics, Inc. not be used in advertising or publicity
  20 pertaining to distribution of the software without specific,
  21 written prior permission.
  22
  23 THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU
  24 "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR
  25 OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF
  26 MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  IN NO
  27 EVENT SHALL SILICON GRAPHICS, INC.  BE LIABLE TO YOU OR ANYONE
  28 ELSE FOR ANY DIRECT, SPECIAL, INCIDENTAL, INDIRECT OR
  29 CONSEQUENTIAL DAMAGES OF ANY KIND, OR ANY DAMAGES WHATSOEVER,
  30 INCLUDING WITHOUT LIMITATION, LOSS OF PROFIT, LOSS OF USE,
  31 SAVINGS OR REVENUE, OR THE CLAIMS OF THIRD PARTIES, WHETHER OR
  32 NOT SILICON GRAPHICS, INC.  HAS BEEN ADVISED OF THE POSSIBILITY
  33 OF SUCH LOSS, HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  34 ARISING OUT OF OR IN CONNECTION WITH THE POSSESSION, USE OR
  35 PERFORMANCE OF THIS SOFTWARE.
  36
  37 US Government Users Restricted Rights
  38
  39 Use, duplication, or disclosure by the Government is subject to
  40 restrictions set forth in FAR 52.227.19(c)(2) or subparagraph
  41 (c)(1)(ii) of the Rights in Technical Data and Computer
  42 Software clause at DFARS 252.227-7013 and/or in similar or
  43 successor clauses in the FAR or the DOD or NASA FAR
  44 Supplement.  Unpublished-- rights reserved under the copyright
  45 laws of the United States.  Contractor/manufacturer is Silicon
  46 Graphics, Inc., 2011 N.  Shoreline Blvd., Mountain View, CA
  47 94039-7311.
  48
  49 OpenGL(TM) is a trademark of Silicon Graphics, Inc.
  50 */
  51
  52
  53 #include "glutint.h"
  54
  55
  56 /* Rim, body, lid, and bottom data must be reflected in x and
  57    y; handle and spout data across the y axis only.  */
  58
  59 static int patchdata[][16] =
  60 {
  61     /* rim */
  62   {102, 103, 104, 105, 4, 5, 6, 7, 8, 9, 10, 11,
  63     12, 13, 14, 15},
  64     /* body */
  65   {12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23,
  66     24, 25, 26, 27},
  67   {24, 25, 26, 27, 29, 30, 31, 32, 33, 34, 35, 36,
  68     37, 38, 39, 40},
  69     /* lid */
  70   {96, 96, 96, 96, 97, 98, 99, 100, 101, 101, 101,
  71     101, 0, 1, 2, 3,},
  72   {0, 1, 2, 3, 106, 107, 108, 109, 110, 111, 112,
  73     113, 114, 115, 116, 117},
  74     /* bottom */
  75   {118, 118, 118, 118, 124, 122, 119, 121, 123, 126,
  76     125, 120, 40, 39, 38, 37},
  77     /* handle */
  78   {41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52,
  79     53, 54, 55, 56},
  80   {53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64,
  81     28, 65, 66, 67},
  82     /* spout */
  83   {68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
  84     80, 81, 82, 83},
  85   {80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91,
  86     92, 93, 94, 95}
  87 };
  88 /* *INDENT-OFF* */
  89
  90 static float cpdata[][3] =
  91 {
  92     {0.2, 0, 2.7}, {0.2, -0.112, 2.7}, {0.112, -0.2, 2.7}, {0,
  93     -0.2, 2.7}, {1.3375, 0, 2.53125}, {1.3375, -0.749, 2.53125},
  94     {0.749, -1.3375, 2.53125}, {0, -1.3375, 2.53125}, {1.4375,
  95     0, 2.53125}, {1.4375, -0.805, 2.53125}, {0.805, -1.4375,
  96     2.53125}, {0, -1.4375, 2.53125}, {1.5, 0, 2.4}, {1.5, -0.84,
  97     2.4}, {0.84, -1.5, 2.4}, {0, -1.5, 2.4}, {1.75, 0, 1.875},
  98     {1.75, -0.98, 1.875}, {0.98, -1.75, 1.875}, {0, -1.75,
  99     1.875}, {2, 0, 1.35}, {2, -1.12, 1.35}, {1.12, -2, 1.35},
 100     {0, -2, 1.35}, {2, 0, 0.9}, {2, -1.12, 0.9}, {1.12, -2,
 101     0.9}, {0, -2, 0.9}, {-2, 0, 0.9}, {2, 0, 0.45}, {2, -1.12,
 102     0.45}, {1.12, -2, 0.45}, {0, -2, 0.45}, {1.5, 0, 0.225},
 103     {1.5, -0.84, 0.225}, {0.84, -1.5, 0.225}, {0, -1.5, 0.225},
 104     {1.5, 0, 0.15}, {1.5, -0.84, 0.15}, {0.84, -1.5, 0.15}, {0,
 105     -1.5, 0.15}, {-1.6, 0, 2.025}, {-1.6, -0.3, 2.025}, {-1.5,
 106     -0.3, 2.25}, {-1.5, 0, 2.25}, {-2.3, 0, 2.025}, {-2.3, -0.3,
 107     2.025}, {-2.5, -0.3, 2.25}, {-2.5, 0, 2.25}, {-2.7, 0,
 108     2.025}, {-2.7, -0.3, 2.025}, {-3, -0.3, 2.25}, {-3, 0,
 109     2.25}, {-2.7, 0, 1.8}, {-2.7, -0.3, 1.8}, {-3, -0.3, 1.8},
 110     {-3, 0, 1.8}, {-2.7, 0, 1.575}, {-2.7, -0.3, 1.575}, {-3,
 111     -0.3, 1.35}, {-3, 0, 1.35}, {-2.5, 0, 1.125}, {-2.5, -0.3,
 112     1.125}, {-2.65, -0.3, 0.9375}, {-2.65, 0, 0.9375}, {-2,
 113     -0.3, 0.9}, {-1.9, -0.3, 0.6}, {-1.9, 0, 0.6}, {1.7, 0,
 114     1.425}, {1.7, -0.66, 1.425}, {1.7, -0.66, 0.6}, {1.7, 0,
 115     0.6}, {2.6, 0, 1.425}, {2.6, -0.66, 1.425}, {3.1, -0.66,
 116     0.825}, {3.1, 0, 0.825}, {2.3, 0, 2.1}, {2.3, -0.25, 2.1},
 117     {2.4, -0.25, 2.025}, {2.4, 0, 2.025}, {2.7, 0, 2.4}, {2.7,
 118     -0.25, 2.4}, {3.3, -0.25, 2.4}, {3.3, 0, 2.4}, {2.8, 0,
 119     2.475}, {2.8, -0.25, 2.475}, {3.525, -0.25, 2.49375},
 120     {3.525, 0, 2.49375}, {2.9, 0, 2.475}, {2.9, -0.15, 2.475},
 121     {3.45, -0.15, 2.5125}, {3.45, 0, 2.5125}, {2.8, 0, 2.4},
 122     {2.8, -0.15, 2.4}, {3.2, -0.15, 2.4}, {3.2, 0, 2.4}, {0, 0,
 123     3.15}, {0.8, 0, 3.15}, {0.8, -0.45, 3.15}, {0.45, -0.8,
 124     3.15}, {0, -0.8, 3.15}, {0, 0, 2.85}, {1.4, 0, 2.4}, {1.4,
 125     -0.784, 2.4}, {0.784, -1.4, 2.4}, {0, -1.4, 2.4}, {0.4, 0,
 126     2.55}, {0.4, -0.224, 2.55}, {0.224, -0.4, 2.55}, {0, -0.4,
 127     2.55}, {1.3, 0, 2.55}, {1.3, -0.728, 2.55}, {0.728, -1.3,
 128     2.55}, {0, -1.3, 2.55}, {1.3, 0, 2.4}, {1.3, -0.728, 2.4},
 129     {0.728, -1.3, 2.4}, {0, -1.3, 2.4}, {0, 0, 0}, {1.425,
 130     -0.798, 0}, {1.5, 0, 0.075}, {1.425, 0, 0}, {0.798, -1.425,
 131     0}, {0, -1.5, 0.075}, {0, -1.425, 0}, {1.5, -0.84, 0.075},
 132     {0.84, -1.5, 0.075}
 133 };
 134
 135 static float tex[2][2][2] =
 136 {
 137   { {0, 0},
 138     {1, 0}},
 139   { {0, 1},
 140     {1, 1}}
 141 };
 142
 143 /* *INDENT-ON* */
 144
 145 static void
 146 teapot(GLint grid, GLdouble scale, GLenum type)
 147 {
 148   float p[4][4][3], q[4][4][3], r[4][4][3], s[4][4][3];
 149   long i, j, k, l;
 150
 151   glPushAttrib(GL_ENABLE_BIT | GL_EVAL_BIT);
 152   glEnable(GL_AUTO_NORMAL);
 153   glEnable(GL_NORMALIZE);
 154   glEnable(GL_MAP2_VERTEX_3);
 155   glEnable(GL_MAP2_TEXTURE_COORD_2);
 156   glPushMatrix();
 157   glRotatef(270.0, 1.0, 0.0, 0.0);
 158   glScalef(0.5 * scale, 0.5 * scale, 0.5 * scale);
 159   glTranslatef(0.0, 0.0, -1.5);
 160   for (i = 0; i < 10; i++) {
 161     for (j = 0; j < 4; j++) {
 162       for (k = 0; k < 4; k++) {
 163         for (l = 0; l < 3; l++) {
 164           p[j][k][l] = cpdata[patchdata[i][j * 4 + k]][l];
 165           q[j][k][l] = cpdata[patchdata[i][j * 4 + (3 - k)]][l];
 166           if (l == 1)
 167             q[j][k][l] *= -1.0;
 168           if (i < 6) {
 169             r[j][k][l] =
 170               cpdata[patchdata[i][j * 4 + (3 - k)]][l];
 171             if (l == 0)
 172               r[j][k][l] *= -1.0;
 173             s[j][k][l] = cpdata[patchdata[i][j * 4 + k]][l];
 174             if (l == 0)
 175               s[j][k][l] *= -1.0;
 176             if (l == 1)
 177               s[j][k][l] *= -1.0;
 178           }
 179         }
 180       }
 181     }
 182     glMap2f(GL_MAP2_TEXTURE_COORD_2, 0, 1, 2, 2, 0, 1, 4, 2,
 183       &tex[0][0][0]);
 184     glMap2f(GL_MAP2_VERTEX_3, 0, 1, 3, 4, 0, 1, 12, 4,
 185       &p[0][0][0]);
 186     glMapGrid2f(grid, 0.0, 1.0, grid, 0.0, 1.0);
 187     glEvalMesh2(type, 0, grid, 0, grid);
 188     glMap2f(GL_MAP2_VERTEX_3, 0, 1, 3, 4, 0, 1, 12, 4,
 189       &q[0][0][0]);
 190     glEvalMesh2(type, 0, grid, 0, grid);
 191     if (i < 6) {
 192       glMap2f(GL_MAP2_VERTEX_3, 0, 1, 3, 4, 0, 1, 12, 4,
 193         &r[0][0][0]);
 194       glEvalMesh2(type, 0, grid, 0, grid);
 195       glMap2f(GL_MAP2_VERTEX_3, 0, 1, 3, 4, 0, 1, 12, 4,
 196         &s[0][0][0]);
 197       glEvalMesh2(type, 0, grid, 0, grid);
 198     }
 199   }
 200   glPopMatrix();
 201   glPopAttrib();
 202 }
 203
 204 /* CENTRY */
 205 void APIENTRY
 206 glutSolidTeapot(GLdouble scale)
 207 {
 208   teapot(14, scale, GL_FILL);
 209 }
 210
 211 void APIENTRY
 212 glutWireTeapot(GLdouble scale)
 213 {
 214   teapot(10, scale, GL_LINE);
 215 }
 216
 217 /* ENDCENTRY */