src/redbook/cube.c

   1 /*
   2  * Copyright (c) 1993-1997, Silicon Graphics, Inc.
   3  * ALL RIGHTS RESERVED
   4  * Permission to use, copy, modify, and distribute this software for
   5  * any purpose and without fee is hereby granted, provided that the above
   6  * copyright notice appear in all copies and that both the copyright notice
   7  * and this permission notice appear in supporting documentation, and that
   8  * the name of Silicon Graphics, Inc. not be used in advertising
   9  * or publicity pertaining to distribution of the software without specific,
  10  * written prior permission.
  11  *
  12  * THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU "AS-IS"
  13  * AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR OTHERWISE,
  14  * INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY OR
  15  * FITNESS FOR A PARTICULAR PURPOSE.  IN NO EVENT SHALL SILICON
  16  * GRAPHICS, INC.  BE LIABLE TO YOU OR ANYONE ELSE FOR ANY DIRECT,
  17  * SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY
  18  * KIND, OR ANY DAMAGES WHATSOEVER, INCLUDING WITHOUT LIMITATION,
  19  * LOSS OF PROFIT, LOSS OF USE, SAVINGS OR REVENUE, OR THE CLAIMS OF
  20  * THIRD PARTIES, WHETHER OR NOT SILICON GRAPHICS, INC.  HAS BEEN
  21  * ADVISED OF THE POSSIBILITY OF SUCH LOSS, HOWEVER CAUSED AND ON
  22  * ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE
  23  * POSSESSION, USE OR PERFORMANCE OF THIS SOFTWARE.
  24  *
  25  * US Government Users Restricted Rights
  26  * Use, duplication, or disclosure by the Government is subject to
  27  * restrictions set forth in FAR 52.227.19(c)(2) or subparagraph
  28  * (c)(1)(ii) of the Rights in Technical Data and Computer Software
  29  * clause at DFARS 252.227-7013 and/or in similar or successor
  30  * clauses in the FAR or the DOD or NASA FAR Supplement.
  31  * Unpublished-- rights reserved under the copyright laws of the
  32  * United States.  Contractor/manufacturer is Silicon Graphics,
  33  * Inc., 2011 N.  Shoreline Blvd., Mountain View, CA 94039-7311.
  34  *
  35  * OpenGL(R) is a registered trademark of Silicon Graphics, Inc.
  36  */
  37
  38 /*
  39  *  cube.c
  40  *  This program demonstrates a single modeling transformation,
  41  *  glScalef() and a single viewing transformation, gluLookAt().
  42  *  A wireframe cube is rendered.
  43  */
  44 #include "glut_wrap.h"
  45 #include <stdlib.h>
  46
  47 static void init(void)
  48 {
  49    glClearColor (0.0, 0.0, 0.0, 0.0);
  50    glShadeModel (GL_FLAT);
  51 }
  52
  53 static void display(void)
  54 {
  55    glClear (GL_COLOR_BUFFER_BIT);
  56    glColor3f (1.0, 1.0, 1.0);
  57    glLoadIdentity ();             /* clear the matrix */
  58            /* viewing transformation  */
  59    gluLookAt (0.0, 0.0, 5.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0);
  60    glScalef (1.0, 2.0, 1.0);      /* modeling transformation */
  61    glutWireCube (1.0);
  62    glFlush ();
  63 }
  64
  65 static void reshape (int w, int h)
  66 {
  67    glViewport (0, 0, (GLsizei) w, (GLsizei) h);
  68    glMatrixMode (GL_PROJECTION);
  69    glLoadIdentity ();
  70    glFrustum (-1.0, 1.0, -1.0, 1.0, 1.5, 20.0);
  71    glMatrixMode (GL_MODELVIEW);
  72 }
  73
  74 /* ARGSUSED1 */
  75 static void keyboard(unsigned char key, int x, int y)
  76 {
  77    switch (key) {
  78       case 27:
  79          exit(0);
  80          break;
  81    }
  82 }
  83
  84 int main(int argc, char** argv)
  85 {
  86    glutInit(&argc, argv);
  87    glutInitDisplayMode (GLUT_SINGLE | GLUT_RGB);
  88    glutInitWindowSize (500, 500);
  89    glutInitWindowPosition (100, 100);
  90    glutCreateWindow (argv[0]);
  91    init ();
  92    glutDisplayFunc(display);
  93    glutReshapeFunc(reshape);
  94    glutKeyboardFunc(keyboard);
  95    glutMainLoop();
  96    return 0;
  97 }