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  * GPL licensing not permitted.
   6  *
   7  * Authors:
   8  *      Mark Kilgard
   9  */
  10
  11 /**
  12 (c) Copyright 1993, Silicon Graphics, Inc.
  13
  14 ALL RIGHTS RESERVED
  15
  16 Permission to use, copy, modify, and distribute this software
  17 for any purpose and without fee is hereby granted, provided
  18 that the above copyright notice appear in all copies and that
  19 both the copyright notice and this permission notice appear in
  20 supporting documentation, and that the name of Silicon
  21 Graphics, Inc. not be used in advertising or publicity
  22 pertaining to distribution of the software without specific,
  23 written prior permission.
  24
  25 THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU
  26 "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR
  27 OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF
  28 MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  IN NO
  29 EVENT SHALL SILICON GRAPHICS, INC.  BE LIABLE TO YOU OR ANYONE
  30 ELSE FOR ANY DIRECT, SPECIAL, INCIDENTAL, INDIRECT OR
  31 CONSEQUENTIAL DAMAGES OF ANY KIND, OR ANY DAMAGES WHATSOEVER,
  32 INCLUDING WITHOUT LIMITATION, LOSS OF PROFIT, LOSS OF USE,
  33 SAVINGS OR REVENUE, OR THE CLAIMS OF THIRD PARTIES, WHETHER OR
  34 NOT SILICON GRAPHICS, INC.  HAS BEEN ADVISED OF THE POSSIBILITY
  35 OF SUCH LOSS, HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  36 ARISING OUT OF OR IN CONNECTION WITH THE POSSESSION, USE OR
  37 PERFORMANCE OF THIS SOFTWARE.
  38
  39 US Government Users Restricted Rights
  40
  41 Use, duplication, or disclosure by the Government is subject to
  42 restrictions set forth in FAR 52.227.19(c)(2) or subparagraph
  43 (c)(1)(ii) of the Rights in Technical Data and Computer
  44 Software clause at DFARS 252.227-7013 and/or in similar or
  45 successor clauses in the FAR or the DOD or NASA FAR
  46 Supplement.  Unpublished-- rights reserved under the copyright
  47 laws of the United States.  Contractor/manufacturer is Silicon
  48 Graphics, Inc., 2011 N.  Shoreline Blvd., Mountain View, CA
  49 94039-7311.
  50
  51 OpenGL(TM) is a trademark of Silicon Graphics, Inc.
  52 */
  53
  54
  55 #include "glutint.h"
  56
  57
  58 /* Rim, body, lid, and bottom data must be reflected in x and
  59    y; handle and spout data across the y axis only.  */
  60
  61 static int patchdata[][16] =
  62 {
  63     /* rim */
  64   {102, 103, 104, 105, 4, 5, 6, 7, 8, 9, 10, 11,
  65     12, 13, 14, 15},
  66     /* body */
  67   {12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23,
  68     24, 25, 26, 27},
  69   {24, 25, 26, 27, 29, 30, 31, 32, 33, 34, 35, 36,
  70     37, 38, 39, 40},
  71     /* lid */
  72   {96, 96, 96, 96, 97, 98, 99, 100, 101, 101, 101,
  73     101, 0, 1, 2, 3,},
  74   {0, 1, 2, 3, 106, 107, 108, 109, 110, 111, 112,
  75     113, 114, 115, 116, 117},
  76     /* bottom */
  77   {118, 118, 118, 118, 124, 122, 119, 121, 123, 126,
  78     125, 120, 40, 39, 38, 37},
  79     /* handle */
  80   {41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52,
  81     53, 54, 55, 56},
  82   {53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64,
  83     28, 65, 66, 67},
  84     /* spout */
  85   {68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
  86     80, 81, 82, 83},
  87   {80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91,
  88     92, 93, 94, 95}
  89 };
  90 /* *INDENT-OFF* */
  91
  92 static float cpdata[][3] =
  93 {
  94     {0.2, 0, 2.7}, {0.2, -0.112, 2.7}, {0.112, -0.2, 2.7}, {0,
  95     -0.2, 2.7}, {1.3375, 0, 2.53125}, {1.3375, -0.749, 2.53125},
  96     {0.749, -1.3375, 2.53125}, {0, -1.3375, 2.53125}, {1.4375,
  97     0, 2.53125}, {1.4375, -0.805, 2.53125}, {0.805, -1.4375,
  98     2.53125}, {0, -1.4375, 2.53125}, {1.5, 0, 2.4}, {1.5, -0.84,
  99     2.4}, {0.84, -1.5, 2.4}, {0, -1.5, 2.4}, {1.75, 0, 1.875},
 100     {1.75, -0.98, 1.875}, {0.98, -1.75, 1.875}, {0, -1.75,
 101     1.875}, {2, 0, 1.35}, {2, -1.12, 1.35}, {1.12, -2, 1.35},
 102     {0, -2, 1.35}, {2, 0, 0.9}, {2, -1.12, 0.9}, {1.12, -2,
 103     0.9}, {0, -2, 0.9}, {-2, 0, 0.9}, {2, 0, 0.45}, {2, -1.12,
 104     0.45}, {1.12, -2, 0.45}, {0, -2, 0.45}, {1.5, 0, 0.225},
 105     {1.5, -0.84, 0.225}, {0.84, -1.5, 0.225}, {0, -1.5, 0.225},
 106     {1.5, 0, 0.15}, {1.5, -0.84, 0.15}, {0.84, -1.5, 0.15}, {0,
 107     -1.5, 0.15}, {-1.6, 0, 2.025}, {-1.6, -0.3, 2.025}, {-1.5,
 108     -0.3, 2.25}, {-1.5, 0, 2.25}, {-2.3, 0, 2.025}, {-2.3, -0.3,
 109     2.025}, {-2.5, -0.3, 2.25}, {-2.5, 0, 2.25}, {-2.7, 0,
 110     2.025}, {-2.7, -0.3, 2.025}, {-3, -0.3, 2.25}, {-3, 0,
 111     2.25}, {-2.7, 0, 1.8}, {-2.7, -0.3, 1.8}, {-3, -0.3, 1.8},
 112     {-3, 0, 1.8}, {-2.7, 0, 1.575}, {-2.7, -0.3, 1.575}, {-3,
 113     -0.3, 1.35}, {-3, 0, 1.35}, {-2.5, 0, 1.125}, {-2.5, -0.3,
 114     1.125}, {-2.65, -0.3, 0.9375}, {-2.65, 0, 0.9375}, {-2,
 115     -0.3, 0.9}, {-1.9, -0.3, 0.6}, {-1.9, 0, 0.6}, {1.7, 0,
 116     1.425}, {1.7, -0.66, 1.425}, {1.7, -0.66, 0.6}, {1.7, 0,
 117     0.6}, {2.6, 0, 1.425}, {2.6, -0.66, 1.425}, {3.1, -0.66,
 118     0.825}, {3.1, 0, 0.825}, {2.3, 0, 2.1}, {2.3, -0.25, 2.1},
 119     {2.4, -0.25, 2.025}, {2.4, 0, 2.025}, {2.7, 0, 2.4}, {2.7,
 120     -0.25, 2.4}, {3.3, -0.25, 2.4}, {3.3, 0, 2.4}, {2.8, 0,
 121     2.475}, {2.8, -0.25, 2.475}, {3.525, -0.25, 2.49375},
 122     {3.525, 0, 2.49375}, {2.9, 0, 2.475}, {2.9, -0.15, 2.475},
 123     {3.45, -0.15, 2.5125}, {3.45, 0, 2.5125}, {2.8, 0, 2.4},
 124     {2.8, -0.15, 2.4}, {3.2, -0.15, 2.4}, {3.2, 0, 2.4}, {0, 0,
 125     3.15}, {0.8, 0, 3.15}, {0.8, -0.45, 3.15}, {0.45, -0.8,
 126     3.15}, {0, -0.8, 3.15}, {0, 0, 2.85}, {1.4, 0, 2.4}, {1.4,
 127     -0.784, 2.4}, {0.784, -1.4, 2.4}, {0, -1.4, 2.4}, {0.4, 0,
 128     2.55}, {0.4, -0.224, 2.55}, {0.224, -0.4, 2.55}, {0, -0.4,
 129     2.55}, {1.3, 0, 2.55}, {1.3, -0.728, 2.55}, {0.728, -1.3,
 130     2.55}, {0, -1.3, 2.55}, {1.3, 0, 2.4}, {1.3, -0.728, 2.4},
 131     {0.728, -1.3, 2.4}, {0, -1.3, 2.4}, {0, 0, 0}, {1.425,
 132     -0.798, 0}, {1.5, 0, 0.075}, {1.425, 0, 0}, {0.798, -1.425,
 133     0}, {0, -1.5, 0.075}, {0, -1.425, 0}, {1.5, -0.84, 0.075},
 134     {0.84, -1.5, 0.075}
 135 };
 136
 137 static float tex[2][2][2] =
 138 {
 139   { {0, 0},
 140     {1, 0}},
 141   { {0, 1},
 142     {1, 1}}
 143 };
 144
 145 /* *INDENT-ON* */
 146
 147 static void
 148 teapot(GLint grid, GLdouble scale, GLenum type)
 149 {
 150   float p[4][4][3], q[4][4][3], r[4][4][3], s[4][4][3];
 151   long i, j, k, l;
 152
 153   glPushAttrib(GL_ENABLE_BIT | GL_EVAL_BIT);
 154   glEnable(GL_AUTO_NORMAL);
 155   glEnable(GL_NORMALIZE);
 156   glEnable(GL_MAP2_VERTEX_3);
 157   glEnable(GL_MAP2_TEXTURE_COORD_2);
 158   glPushMatrix();
 159   glRotatef(270.0, 1.0, 0.0, 0.0);
 160   glScalef(0.5 * scale, 0.5 * scale, 0.5 * scale);
 161   glTranslatef(0.0, 0.0, -1.5);
 162   for (i = 0; i < 10; i++) {
 163     for (j = 0; j < 4; j++) {
 164       for (k = 0; k < 4; k++) {
 165         for (l = 0; l < 3; l++) {
 166           p[j][k][l] = cpdata[patchdata[i][j * 4 + k]][l];
 167           q[j][k][l] = cpdata[patchdata[i][j * 4 + (3 - k)]][l];
 168           if (l == 1)
 169             q[j][k][l] *= -1.0;
 170           if (i < 6) {
 171             r[j][k][l] =
 172               cpdata[patchdata[i][j * 4 + (3 - k)]][l];
 173             if (l == 0)
 174               r[j][k][l] *= -1.0;
 175             s[j][k][l] = cpdata[patchdata[i][j * 4 + k]][l];
 176             if (l == 0)
 177               s[j][k][l] *= -1.0;
 178             if (l == 1)
 179               s[j][k][l] *= -1.0;
 180           }
 181         }
 182       }
 183     }
 184     glMap2f(GL_MAP2_TEXTURE_COORD_2, 0, 1, 2, 2, 0, 1, 4, 2,
 185       &tex[0][0][0]);
 186     glMap2f(GL_MAP2_VERTEX_3, 0, 1, 3, 4, 0, 1, 12, 4,
 187       &p[0][0][0]);
 188     glMapGrid2f(grid, 0.0, 1.0, grid, 0.0, 1.0);
 189     glEvalMesh2(type, 0, grid, 0, grid);
 190     glMap2f(GL_MAP2_VERTEX_3, 0, 1, 3, 4, 0, 1, 12, 4,
 191       &q[0][0][0]);
 192     glEvalMesh2(type, 0, grid, 0, grid);
 193     if (i < 6) {
 194       glMap2f(GL_MAP2_VERTEX_3, 0, 1, 3, 4, 0, 1, 12, 4,
 195         &r[0][0][0]);
 196       glEvalMesh2(type, 0, grid, 0, grid);
 197       glMap2f(GL_MAP2_VERTEX_3, 0, 1, 3, 4, 0, 1, 12, 4,
 198         &s[0][0][0]);
 199       glEvalMesh2(type, 0, grid, 0, grid);
 200     }
 201   }
 202   glPopMatrix();
 203   glPopAttrib();
 204 }
 205
 206 /* CENTRY */
 207 void APIENTRY
 208 glutSolidTeapot(GLdouble scale)
 209 {
 210   teapot(14, scale, GL_FILL);
 211 }
 212
 213 void APIENTRY
 214 glutWireTeapot(GLdouble scale)
 215 {
 216   teapot(10, scale, GL_LINE);
 217 }
 218
 219 /* ENDCENTRY */