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
14ALL RIGHTS RESERVED
15
16Permission to use, copy, modify, and distribute this software
17for any purpose and without fee is hereby granted, provided
18that the above copyright notice appear in all copies and that
19both the copyright notice and this permission notice appear in
20supporting documentation, and that the name of Silicon
21Graphics, Inc. not be used in advertising or publicity
22pertaining to distribution of the software without specific,
23written prior permission.
24
25THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU
26"AS-IS" AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR
27OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF
28MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  IN NO
29EVENT SHALL SILICON GRAPHICS, INC.  BE LIABLE TO YOU OR ANYONE
30ELSE FOR ANY DIRECT, SPECIAL, INCIDENTAL, INDIRECT OR
31CONSEQUENTIAL DAMAGES OF ANY KIND, OR ANY DAMAGES WHATSOEVER,
32INCLUDING WITHOUT LIMITATION, LOSS OF PROFIT, LOSS OF USE,
33SAVINGS OR REVENUE, OR THE CLAIMS OF THIRD PARTIES, WHETHER OR
34NOT SILICON GRAPHICS, INC.  HAS BEEN ADVISED OF THE POSSIBILITY
35OF SUCH LOSS, HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
36ARISING OUT OF OR IN CONNECTION WITH THE POSSESSION, USE OR
37PERFORMANCE OF THIS SOFTWARE.
38
39US Government Users Restricted Rights
40
41Use, duplication, or disclosure by the Government is subject to
42restrictions set forth in FAR 52.227.19(c)(2) or subparagraph
43(c)(1)(ii) of the Rights in Technical Data and Computer
44Software clause at DFARS 252.227-7013 and/or in similar or
45successor clauses in the FAR or the DOD or NASA FAR
46Supplement.  Unpublished-- rights reserved under the copyright
47laws of the United States.  Contractor/manufacturer is Silicon
48Graphics, Inc., 2011 N.  Shoreline Blvd., Mountain View, CA
4994039-7311.
50
51OpenGL(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
61static 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
92static 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
137static float tex[2][2][2] =
138{
139  { {0, 0},
140    {1, 0}},
141  { {0, 1},
142    {1, 1}}
143};
144
145/* *INDENT-ON* */
146
147static void
148teapot(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 */
207void APIENTRY
208glutSolidTeapot(GLdouble scale)
209{
210  teapot(14, scale, GL_FILL);
211}
212
213void APIENTRY
214glutWireTeapot(GLdouble scale)
215{
216  teapot(10, scale, GL_LINE);
217}
218
219/* ENDCENTRY */
220