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