1
2/* Copyright (c) Mark J. Kilgard, 1994. */
3
4/**
5(c) Copyright 1993, Silicon Graphics, Inc.
6
7ALL RIGHTS RESERVED
8
9Permission to use, copy, modify, and distribute this software
10for any purpose and without fee is hereby granted, provided
11that the above copyright notice appear in all copies and that
12both the copyright notice and this permission notice appear in
13supporting documentation, and that the name of Silicon
14Graphics, Inc. not be used in advertising or publicity
15pertaining to distribution of the software without specific,
16written prior permission.
17
18THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU
19"AS-IS" AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR
20OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF
21MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  IN NO
22EVENT SHALL SILICON GRAPHICS, INC.  BE LIABLE TO YOU OR ANYONE
23ELSE FOR ANY DIRECT, SPECIAL, INCIDENTAL, INDIRECT OR
24CONSEQUENTIAL DAMAGES OF ANY KIND, OR ANY DAMAGES WHATSOEVER,
25INCLUDING WITHOUT LIMITATION, LOSS OF PROFIT, LOSS OF USE,
26SAVINGS OR REVENUE, OR THE CLAIMS OF THIRD PARTIES, WHETHER OR
27NOT SILICON GRAPHICS, INC.  HAS BEEN ADVISED OF THE POSSIBILITY
28OF SUCH LOSS, HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
29ARISING OUT OF OR IN CONNECTION WITH THE POSSESSION, USE OR
30PERFORMANCE OF THIS SOFTWARE.
31
32US Government Users Restricted Rights
33
34Use, duplication, or disclosure by the Government is subject to
35restrictions set forth in FAR 52.227.19(c)(2) or subparagraph
36(c)(1)(ii) of the Rights in Technical Data and Computer
37Software clause at DFARS 252.227-7013 and/or in similar or
38successor clauses in the FAR or the DOD or NASA FAR
39Supplement.  Unpublished-- rights reserved under the copyright
40laws of the United States.  Contractor/manufacturer is Silicon
41Graphics, Inc., 2011 N.  Shoreline Blvd., Mountain View, CA
4294039-7311.
43
44OpenGL(TM) is a trademark of Silicon Graphics, Inc.
45*/
46
47#include "glutint.h"
48
49/* Rim, body, lid, and bottom data must be reflected in x and
50   y; handle and spout data across the y axis only.  */
51
52static int patchdata[][16] =
53{
54    /* rim */
55  {102, 103, 104, 105, 4, 5, 6, 7, 8, 9, 10, 11,
56    12, 13, 14, 15},
57    /* body */
58  {12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23,
59    24, 25, 26, 27},
60  {24, 25, 26, 27, 29, 30, 31, 32, 33, 34, 35, 36,
61    37, 38, 39, 40},
62    /* lid */
63  {96, 96, 96, 96, 97, 98, 99, 100, 101, 101, 101,
64    101, 0, 1, 2, 3,},
65  {0, 1, 2, 3, 106, 107, 108, 109, 110, 111, 112,
66    113, 114, 115, 116, 117},
67    /* bottom */
68  {118, 118, 118, 118, 124, 122, 119, 121, 123, 126,
69    125, 120, 40, 39, 38, 37},
70    /* handle */
71  {41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52,
72    53, 54, 55, 56},
73  {53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64,
74    28, 65, 66, 67},
75    /* spout */
76  {68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
77    80, 81, 82, 83},
78  {80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91,
79    92, 93, 94, 95}
80};
81/* *INDENT-OFF* */
82
83static float cpdata[][3] =
84{
85    {0.2, 0, 2.7}, {0.2, -0.112, 2.7}, {0.112, -0.2, 2.7}, {0,
86    -0.2, 2.7}, {1.3375, 0, 2.53125}, {1.3375, -0.749, 2.53125},
87    {0.749, -1.3375, 2.53125}, {0, -1.3375, 2.53125}, {1.4375,
88    0, 2.53125}, {1.4375, -0.805, 2.53125}, {0.805, -1.4375,
89    2.53125}, {0, -1.4375, 2.53125}, {1.5, 0, 2.4}, {1.5, -0.84,
90    2.4}, {0.84, -1.5, 2.4}, {0, -1.5, 2.4}, {1.75, 0, 1.875},
91    {1.75, -0.98, 1.875}, {0.98, -1.75, 1.875}, {0, -1.75,
92    1.875}, {2, 0, 1.35}, {2, -1.12, 1.35}, {1.12, -2, 1.35},
93    {0, -2, 1.35}, {2, 0, 0.9}, {2, -1.12, 0.9}, {1.12, -2,
94    0.9}, {0, -2, 0.9}, {-2, 0, 0.9}, {2, 0, 0.45}, {2, -1.12,
95    0.45}, {1.12, -2, 0.45}, {0, -2, 0.45}, {1.5, 0, 0.225},
96    {1.5, -0.84, 0.225}, {0.84, -1.5, 0.225}, {0, -1.5, 0.225},
97    {1.5, 0, 0.15}, {1.5, -0.84, 0.15}, {0.84, -1.5, 0.15}, {0,
98    -1.5, 0.15}, {-1.6, 0, 2.025}, {-1.6, -0.3, 2.025}, {-1.5,
99    -0.3, 2.25}, {-1.5, 0, 2.25}, {-2.3, 0, 2.025}, {-2.3, -0.3,
100    2.025}, {-2.5, -0.3, 2.25}, {-2.5, 0, 2.25}, {-2.7, 0,
101    2.025}, {-2.7, -0.3, 2.025}, {-3, -0.3, 2.25}, {-3, 0,
102    2.25}, {-2.7, 0, 1.8}, {-2.7, -0.3, 1.8}, {-3, -0.3, 1.8},
103    {-3, 0, 1.8}, {-2.7, 0, 1.575}, {-2.7, -0.3, 1.575}, {-3,
104    -0.3, 1.35}, {-3, 0, 1.35}, {-2.5, 0, 1.125}, {-2.5, -0.3,
105    1.125}, {-2.65, -0.3, 0.9375}, {-2.65, 0, 0.9375}, {-2,
106    -0.3, 0.9}, {-1.9, -0.3, 0.6}, {-1.9, 0, 0.6}, {1.7, 0,
107    1.425}, {1.7, -0.66, 1.425}, {1.7, -0.66, 0.6}, {1.7, 0,
108    0.6}, {2.6, 0, 1.425}, {2.6, -0.66, 1.425}, {3.1, -0.66,
109    0.825}, {3.1, 0, 0.825}, {2.3, 0, 2.1}, {2.3, -0.25, 2.1},
110    {2.4, -0.25, 2.025}, {2.4, 0, 2.025}, {2.7, 0, 2.4}, {2.7,
111    -0.25, 2.4}, {3.3, -0.25, 2.4}, {3.3, 0, 2.4}, {2.8, 0,
112    2.475}, {2.8, -0.25, 2.475}, {3.525, -0.25, 2.49375},
113    {3.525, 0, 2.49375}, {2.9, 0, 2.475}, {2.9, -0.15, 2.475},
114    {3.45, -0.15, 2.5125}, {3.45, 0, 2.5125}, {2.8, 0, 2.4},
115    {2.8, -0.15, 2.4}, {3.2, -0.15, 2.4}, {3.2, 0, 2.4}, {0, 0,
116    3.15}, {0.8, 0, 3.15}, {0.8, -0.45, 3.15}, {0.45, -0.8,
117    3.15}, {0, -0.8, 3.15}, {0, 0, 2.85}, {1.4, 0, 2.4}, {1.4,
118    -0.784, 2.4}, {0.784, -1.4, 2.4}, {0, -1.4, 2.4}, {0.4, 0,
119    2.55}, {0.4, -0.224, 2.55}, {0.224, -0.4, 2.55}, {0, -0.4,
120    2.55}, {1.3, 0, 2.55}, {1.3, -0.728, 2.55}, {0.728, -1.3,
121    2.55}, {0, -1.3, 2.55}, {1.3, 0, 2.4}, {1.3, -0.728, 2.4},
122    {0.728, -1.3, 2.4}, {0, -1.3, 2.4}, {0, 0, 0}, {1.425,
123    -0.798, 0}, {1.5, 0, 0.075}, {1.425, 0, 0}, {0.798, -1.425,
124    0}, {0, -1.5, 0.075}, {0, -1.425, 0}, {1.5, -0.84, 0.075},
125    {0.84, -1.5, 0.075}
126};
127
128static float tex[2][2][2] =
129{
130  { {0, 0},
131    {1, 0}},
132  { {0, 1},
133    {1, 1}}
134};
135
136/* *INDENT-ON* */
137
138static void
139teapot(GLint grid, GLdouble scale, GLenum type)
140{
141  float p[4][4][3], q[4][4][3], r[4][4][3], s[4][4][3];
142  long i, j, k, l;
143
144  glPushAttrib(GL_ENABLE_BIT | GL_EVAL_BIT);
145  glEnable(GL_AUTO_NORMAL);
146  glEnable(GL_NORMALIZE);
147  glEnable(GL_MAP2_VERTEX_3);
148  glEnable(GL_MAP2_TEXTURE_COORD_2);
149  glPushMatrix();
150  glRotatef(270.0, 1.0, 0.0, 0.0);
151  glScalef(0.5 * scale, 0.5 * scale, 0.5 * scale);
152  glTranslatef(0.0, 0.0, -1.5);
153  for (i = 0; i < 10; i++) {
154    for (j = 0; j < 4; j++) {
155      for (k = 0; k < 4; k++) {
156        for (l = 0; l < 3; l++) {
157          p[j][k][l] = cpdata[patchdata[i][j * 4 + k]][l];
158          q[j][k][l] = cpdata[patchdata[i][j * 4 + (3 - k)]][l];
159          if (l == 1)
160            q[j][k][l] *= -1.0;
161          if (i < 6) {
162            r[j][k][l] =
163              cpdata[patchdata[i][j * 4 + (3 - k)]][l];
164            if (l == 0)
165              r[j][k][l] *= -1.0;
166            s[j][k][l] = cpdata[patchdata[i][j * 4 + k]][l];
167            if (l == 0)
168              s[j][k][l] *= -1.0;
169            if (l == 1)
170              s[j][k][l] *= -1.0;
171          }
172        }
173      }
174    }
175    glMap2f(GL_MAP2_TEXTURE_COORD_2, 0, 1, 2, 2, 0, 1, 4, 2,
176      &tex[0][0][0]);
177    glMap2f(GL_MAP2_VERTEX_3, 0, 1, 3, 4, 0, 1, 12, 4,
178      &p[0][0][0]);
179    glMapGrid2f(grid, 0.0, 1.0, grid, 0.0, 1.0);
180    glEvalMesh2(type, 0, grid, 0, grid);
181    glMap2f(GL_MAP2_VERTEX_3, 0, 1, 3, 4, 0, 1, 12, 4,
182      &q[0][0][0]);
183    glEvalMesh2(type, 0, grid, 0, grid);
184    if (i < 6) {
185      glMap2f(GL_MAP2_VERTEX_3, 0, 1, 3, 4, 0, 1, 12, 4,
186        &r[0][0][0]);
187      glEvalMesh2(type, 0, grid, 0, grid);
188      glMap2f(GL_MAP2_VERTEX_3, 0, 1, 3, 4, 0, 1, 12, 4,
189        &s[0][0][0]);
190      glEvalMesh2(type, 0, grid, 0, grid);
191    }
192  }
193  glPopMatrix();
194  glPopAttrib();
195}
196
197/* CENTRY */
198void GLUTAPIENTRY
199glutSolidTeapot(GLdouble scale)
200{
201  teapot(7, scale, GL_FILL);
202}
203
204void GLUTAPIENTRY
205glutWireTeapot(GLdouble scale)
206{
207  teapot(10, scale, GL_LINE);
208}
209
210/* ENDCENTRY */
211