Retired Document
Important: This sample code may not represent best practices for current development. The project may use deprecated symbols and illustrate technologies and techniques that are no longer recommended.
glut_teapot.c
/* Copyright (c) Mark J. Kilgard, 1994. */ |
/** |
(c) Copyright 1993, Silicon Graphics, Inc. |
ALL RIGHTS RESERVED |
Permission to use, copy, modify, and distribute this software |
for any purpose and without fee is hereby granted, provided |
that the above copyright notice appear in all copies and that |
both the copyright notice and this permission notice appear in |
supporting documentation, and that the name of Silicon |
Graphics, Inc. not be used in advertising or publicity |
pertaining to distribution of the software without specific, |
written prior permission. |
THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU |
"AS-IS" AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR |
OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF |
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. IN NO |
EVENT SHALL SILICON GRAPHICS, INC. BE LIABLE TO YOU OR ANYONE |
ELSE FOR ANY DIRECT, SPECIAL, INCIDENTAL, INDIRECT OR |
CONSEQUENTIAL DAMAGES OF ANY KIND, OR ANY DAMAGES WHATSOEVER, |
INCLUDING WITHOUT LIMITATION, LOSS OF PROFIT, LOSS OF USE, |
SAVINGS OR REVENUE, OR THE CLAIMS OF THIRD PARTIES, WHETHER OR |
NOT SILICON GRAPHICS, INC. HAS BEEN ADVISED OF THE POSSIBILITY |
OF SUCH LOSS, HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
ARISING OUT OF OR IN CONNECTION WITH THE POSSESSION, USE OR |
PERFORMANCE OF THIS SOFTWARE. |
US Government Users Restricted Rights |
Use, duplication, or disclosure by the Government is subject to |
restrictions set forth in FAR 52.227.19(c)(2) or subparagraph |
(c)(1)(ii) of the Rights in Technical Data and Computer |
Software clause at DFARS 252.227-7013 and/or in similar or |
successor clauses in the FAR or the DOD or NASA FAR |
Supplement. Unpublished-- rights reserved under the copyright |
laws of the United States. Contractor/manufacturer is Silicon |
Graphics, Inc., 2011 N. Shoreline Blvd., Mountain View, CA |
94039-7311. |
OpenGL(TM) is a trademark of Silicon Graphics, Inc. |
*/ |
#if defined(__APPLE__) |
#include "glut.h" |
#include "macx_utilities.h" |
#else |
#include "glutint.h" |
#endif |
/* Rim, body, lid, and bottom data must be reflected in x and |
y; handle and spout data across the y axis only. */ |
static int patchdata[][16] = |
{ |
/* rim */ |
{102, 103, 104, 105, 4, 5, 6, 7, 8, 9, 10, 11, |
12, 13, 14, 15}, |
/* body */ |
{12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, |
24, 25, 26, 27}, |
{24, 25, 26, 27, 29, 30, 31, 32, 33, 34, 35, 36, |
37, 38, 39, 40}, |
/* lid */ |
{96, 96, 96, 96, 97, 98, 99, 100, 101, 101, 101, |
101, 0, 1, 2, 3,}, |
{0, 1, 2, 3, 106, 107, 108, 109, 110, 111, 112, |
113, 114, 115, 116, 117}, |
/* bottom */ |
{118, 118, 118, 118, 124, 122, 119, 121, 123, 126, |
125, 120, 40, 39, 38, 37}, |
/* handle */ |
{41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, |
53, 54, 55, 56}, |
{53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, |
28, 65, 66, 67}, |
/* spout */ |
{68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, |
80, 81, 82, 83}, |
{80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, |
92, 93, 94, 95} |
}; |
/* *INDENT-OFF* */ |
static float cpdata[][3] = |
{ |
{0.2, 0, 2.7}, {0.2, -0.112, 2.7}, {0.112, -0.2, 2.7}, {0, |
-0.2, 2.7}, {1.3375, 0, 2.53125}, {1.3375, -0.749, 2.53125}, |
{0.749, -1.3375, 2.53125}, {0, -1.3375, 2.53125}, {1.4375, |
0, 2.53125}, {1.4375, -0.805, 2.53125}, {0.805, -1.4375, |
2.53125}, {0, -1.4375, 2.53125}, {1.5, 0, 2.4}, {1.5, -0.84, |
2.4}, {0.84, -1.5, 2.4}, {0, -1.5, 2.4}, {1.75, 0, 1.875}, |
{1.75, -0.98, 1.875}, {0.98, -1.75, 1.875}, {0, -1.75, |
1.875}, {2, 0, 1.35}, {2, -1.12, 1.35}, {1.12, -2, 1.35}, |
{0, -2, 1.35}, {2, 0, 0.9}, {2, -1.12, 0.9}, {1.12, -2, |
0.9}, {0, -2, 0.9}, {-2, 0, 0.9}, {2, 0, 0.45}, {2, -1.12, |
0.45}, {1.12, -2, 0.45}, {0, -2, 0.45}, {1.5, 0, 0.225}, |
{1.5, -0.84, 0.225}, {0.84, -1.5, 0.225}, {0, -1.5, 0.225}, |
{1.5, 0, 0.15}, {1.5, -0.84, 0.15}, {0.84, -1.5, 0.15}, {0, |
-1.5, 0.15}, {-1.6, 0, 2.025}, {-1.6, -0.3, 2.025}, {-1.5, |
-0.3, 2.25}, {-1.5, 0, 2.25}, {-2.3, 0, 2.025}, {-2.3, -0.3, |
2.025}, {-2.5, -0.3, 2.25}, {-2.5, 0, 2.25}, {-2.7, 0, |
2.025}, {-2.7, -0.3, 2.025}, {-3, -0.3, 2.25}, {-3, 0, |
2.25}, {-2.7, 0, 1.8}, {-2.7, -0.3, 1.8}, {-3, -0.3, 1.8}, |
{-3, 0, 1.8}, {-2.7, 0, 1.575}, {-2.7, -0.3, 1.575}, {-3, |
-0.3, 1.35}, {-3, 0, 1.35}, {-2.5, 0, 1.125}, {-2.5, -0.3, |
1.125}, {-2.65, -0.3, 0.9375}, {-2.65, 0, 0.9375}, {-2, |
-0.3, 0.9}, {-1.9, -0.3, 0.6}, {-1.9, 0, 0.6}, {1.7, 0, |
1.425}, {1.7, -0.66, 1.425}, {1.7, -0.66, 0.6}, {1.7, 0, |
0.6}, {2.6, 0, 1.425}, {2.6, -0.66, 1.425}, {3.1, -0.66, |
0.825}, {3.1, 0, 0.825}, {2.3, 0, 2.1}, {2.3, -0.25, 2.1}, |
{2.4, -0.25, 2.025}, {2.4, 0, 2.025}, {2.7, 0, 2.4}, {2.7, |
-0.25, 2.4}, {3.3, -0.25, 2.4}, {3.3, 0, 2.4}, {2.8, 0, |
2.475}, {2.8, -0.25, 2.475}, {3.525, -0.25, 2.49375}, |
{3.525, 0, 2.49375}, {2.9, 0, 2.475}, {2.9, -0.15, 2.475}, |
{3.45, -0.15, 2.5125}, {3.45, 0, 2.5125}, {2.8, 0, 2.4}, |
{2.8, -0.15, 2.4}, {3.2, -0.15, 2.4}, {3.2, 0, 2.4}, {0, 0, |
3.15}, {0.8, 0, 3.15}, {0.8, -0.45, 3.15}, {0.45, -0.8, |
3.15}, {0, -0.8, 3.15}, {0, 0, 2.85}, {1.4, 0, 2.4}, {1.4, |
-0.784, 2.4}, {0.784, -1.4, 2.4}, {0, -1.4, 2.4}, {0.4, 0, |
2.55}, {0.4, -0.224, 2.55}, {0.224, -0.4, 2.55}, {0, -0.4, |
2.55}, {1.3, 0, 2.55}, {1.3, -0.728, 2.55}, {0.728, -1.3, |
2.55}, {0, -1.3, 2.55}, {1.3, 0, 2.4}, {1.3, -0.728, 2.4}, |
{0.728, -1.3, 2.4}, {0, -1.3, 2.4}, {0, 0, 0}, {1.425, |
-0.798, 0}, {1.5, 0, 0.075}, {1.425, 0, 0}, {0.798, -1.425, |
0}, {0, -1.5, 0.075}, {0, -1.425, 0}, {1.5, -0.84, 0.075}, |
{0.84, -1.5, 0.075} |
}; |
static float tex[2][2][2] = |
{ |
{ {0, 0}, |
{1, 0}}, |
{ {0, 1}, |
{1, 1}} |
}; |
/* *INDENT-ON* */ |
static void |
teapot(GLint grid, GLdouble scale, GLenum type) |
{ |
float p[4][4][3], q[4][4][3], r[4][4][3], s[4][4][3]; |
int i, j, k, l; |
glPushAttrib(GL_ENABLE_BIT | GL_EVAL_BIT); |
glEnable(GL_AUTO_NORMAL); |
glEnable(GL_NORMALIZE); |
glEnable(GL_MAP2_VERTEX_3); |
glEnable(GL_MAP2_TEXTURE_COORD_2); |
glPushMatrix(); |
glRotatef(270.0, 1.0, 0.0, 0.0); |
glScalef(0.5 * scale, 0.5 * scale, 0.5 * scale); |
glTranslatef(0.0, 0.0, -1.5); |
for (i = 0; i < 10; i++) { |
for (j = 0; j < 4; j++) { |
for (k = 0; k < 4; k++) { |
for (l = 0; l < 3; l++) { |
p[j][k][l] = cpdata[patchdata[i][j * 4 + k]][l]; |
q[j][k][l] = cpdata[patchdata[i][j * 4 + (3 - k)]][l]; |
if (l == 1) |
q[j][k][l] *= -1.0; |
if (i < 6) { |
r[j][k][l] = |
cpdata[patchdata[i][j * 4 + (3 - k)]][l]; |
if (l == 0) |
r[j][k][l] *= -1.0; |
s[j][k][l] = cpdata[patchdata[i][j * 4 + k]][l]; |
if (l == 0) |
s[j][k][l] *= -1.0; |
if (l == 1) |
s[j][k][l] *= -1.0; |
} |
} |
} |
} |
glMap2f(GL_MAP2_TEXTURE_COORD_2, 0, 1, 2, 2, 0, 1, 4, 2, |
&tex[0][0][0]); |
glMap2f(GL_MAP2_VERTEX_3, 0, 1, 3, 4, 0, 1, 12, 4, |
&p[0][0][0]); |
glMapGrid2f(grid, 0.0, 1.0, grid, 0.0, 1.0); |
glEvalMesh2(type, 0, grid, 0, grid); |
glMap2f(GL_MAP2_VERTEX_3, 0, 1, 3, 4, 0, 1, 12, 4, |
&q[0][0][0]); |
glEvalMesh2(type, 0, grid, 0, grid); |
if (i < 6) { |
glMap2f(GL_MAP2_VERTEX_3, 0, 1, 3, 4, 0, 1, 12, 4, |
&r[0][0][0]); |
glEvalMesh2(type, 0, grid, 0, grid); |
glMap2f(GL_MAP2_VERTEX_3, 0, 1, 3, 4, 0, 1, 12, 4, |
&s[0][0][0]); |
glEvalMesh2(type, 0, grid, 0, grid); |
} |
} |
glPopMatrix(); |
glPopAttrib(); |
} |
/* CENTRY */ |
void APIENTRY |
glutSolidTeapot(GLdouble scale) |
{ |
teapot(14, scale, GL_FILL); |
} |
void APIENTRY |
glutWireTeapot(GLdouble scale) |
{ |
teapot(10, scale, GL_LINE); |
} |
/* ENDCENTRY */ |
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