2 * Copyright (c) 1993-1997, Silicon Graphics, Inc.
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.
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.
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31 * Unpublished-- rights reserved under the copyright laws of the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.
35 * OpenGL(R) is a registered trademark of Silicon Graphics, Inc.
40 * This is a simple double buffered program.
41 * Pressing the left mouse button rotates the rectangle.
42 * Pressing the middle mouse button stops the rotation.
47 static GLfloat spin
= 0.0;
48 static GLdouble t0
= 0.;
50 static void display(void)
52 glClear(GL_COLOR_BUFFER_BIT
);
54 glRotatef(spin
, 0.0, 0.0, 1.0);
55 glColor3f(1.0, 1.0, 1.0);
56 glRectf(-25.0, -25.0, 25.0, 25.0);
62 static GLdouble
gettime(void)
64 return (GLdouble
)(glutGet(GLUT_ELAPSED_TIME
)) / 1000.;
67 static void spinDisplay(void)
73 spin
= spin
+ 120.0*dt
;
79 static void init(void)
81 glClearColor (0.0, 0.0, 0.0, 0.0);
82 glShadeModel (GL_FLAT
);
85 static void reshape(int w
, int h
)
87 glViewport (0, 0, (GLsizei
) w
, (GLsizei
) h
);
88 glMatrixMode(GL_PROJECTION
);
90 glOrtho(-50.0, 50.0, -50.0, 50.0, -1.0, 1.0);
91 glMatrixMode(GL_MODELVIEW
);
96 static void mouse(int button
, int state
, int x
, int y
)
99 case GLUT_LEFT_BUTTON
:
100 if (state
== GLUT_DOWN
)
103 glutIdleFunc(spinDisplay
);
106 case GLUT_MIDDLE_BUTTON
:
107 if (state
== GLUT_DOWN
)
116 key(unsigned char k
, int x
, int y
)
119 case 27: /* Escape */
129 * Request double buffer display mode.
130 * Register mouse input callback functions
132 int main(int argc
, char** argv
)
134 glutInit(&argc
, argv
);
135 glutInitDisplayMode (GLUT_DOUBLE
| GLUT_RGB
);
136 glutInitWindowSize (250, 250);
137 glutInitWindowPosition (100, 100);
138 glutCreateWindow (argv
[0]);
140 glutDisplayFunc(display
);
141 glutReshapeFunc(reshape
);
142 glutMouseFunc(mouse
);
143 glutKeyboardFunc(key
);
145 return 0; /* ANSI C requires main to return int. */