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31 * Unpublished-- rights reserved under the copyright laws of the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 *  list.c
40 *  This program demonstrates how to make and execute a
41 *  display list.  Note that attributes, such as current
42 *  color and matrix, are changed.
43 */
44#include "glut_wrap.h"
45#include <stdlib.h>
46
47GLuint listName;
48
49static void init (void)
50{
51   listName = glGenLists (1);
52   glNewList (listName, GL_COMPILE);
53      glColor3f (1.0, 0.0, 0.0);  /*  current color red  */
54      glBegin (GL_TRIANGLES);
55      glVertex2f (0.0, 0.0);
56      glVertex2f (1.0, 0.0);
57      glVertex2f (0.0, 1.0);
58      glEnd ();
59      glTranslatef (1.5, 0.0, 0.0); /*  move position  */
60   glEndList ();
61   glShadeModel (GL_FLAT);
62}
63
64static void drawLine (void)
65{
66   glBegin (GL_LINES);
67   glVertex2f (0.0, 0.5);
68   glVertex2f (15.0, 0.5);
69   glEnd ();
70}
71
72static void display(void)
73{
74   GLuint i;
75
76   glClear (GL_COLOR_BUFFER_BIT);
77   glColor3f (0.0, 1.0, 0.0);  /*  current color green  */
78   for (i = 0; i < 10; i++)    /*  draw 10 triangles    */
79      glCallList (listName);
80   drawLine ();  /*  is this line green?  NO!  */
81                 /*  where is the line drawn?  */
82   glFlush ();
83}
84
85static void reshape(int w, int h)
86{
87   glViewport(0, 0, w, h);
88   glMatrixMode(GL_PROJECTION);
89   glLoadIdentity();
90   if (w <= h)
91      gluOrtho2D (0.0, 2.0, -0.5 * (GLfloat) h/(GLfloat) w,
92         1.5 * (GLfloat) h/(GLfloat) w);
93   else
94      gluOrtho2D (0.0, 2.0 * (GLfloat) w/(GLfloat) h, -0.5, 1.5);
95   glMatrixMode(GL_MODELVIEW);
96   glLoadIdentity();
97}
98
99/* ARGSUSED1 */
100static void keyboard(unsigned char key, int x, int y)
101{
102   switch (key) {
103      case 27:
104         exit(0);
105         break;
106   }
107}
108
109/*  Main Loop
110 *  Open window with initial window size, title bar,
111 *  RGBA display mode, and handle input events.
112 */
113int main(int argc, char** argv)
114{
115   glutInit(&argc, argv);
116   glutInitDisplayMode (GLUT_SINGLE | GLUT_RGB);
117   glutInitWindowSize(650, 50);
118   glutCreateWindow(argv[0]);
119   init ();
120   glutReshapeFunc (reshape);
121   glutDisplayFunc (display);
122   glutKeyboardFunc (keyboard);
123   glutMainLoop();
124   return 0;
125}
126