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-rw-r--r--progs/redbook/depthcue.c29
1 files changed, 21 insertions, 8 deletions
diff --git a/progs/redbook/depthcue.c b/progs/redbook/depthcue.c
index 41af19cf96..a3e5b743aa 100644
--- a/progs/redbook/depthcue.c
+++ b/progs/redbook/depthcue.c
@@ -3,14 +3,14 @@
/*
* (c) Copyright 1993, Silicon Graphics, Inc.
- * ALL RIGHTS RESERVED
- * Permission to use, copy, modify, and distribute this software for
+ * 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
+ * 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.
+ * 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,
@@ -24,8 +24,8 @@
* 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
+ *
+ * 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
@@ -39,7 +39,7 @@
*/
/*
* depthcue.c
- * This program draws a wireframe model, which uses
+ * This program draws a wireframe model, which uses
* intensity (brightness) to give clues to distance.
* Fog is used to achieve this effect.
*/
@@ -86,6 +86,19 @@ void myReshape(int w, int h)
glTranslatef (0.0, 0.0, -4.0); /* move object into view */
}
+static void
+key(unsigned char k, int x, int y)
+{
+ switch (k) {
+ case 27: /* Escape */
+ exit(0);
+ break;
+ default:
+ return;
+ }
+ glutPostRedisplay();
+}
+
/* Main Loop
*/
int main(int argc, char** argv)
@@ -96,7 +109,7 @@ int main(int argc, char** argv)
myinit();
glutReshapeFunc(myReshape);
glutDisplayFunc(display);
+ glutKeyboardFunc(key);
glutMainLoop();
return 0; /* ANSI C requires main to return int. */
}
-