diff options
| -rw-r--r-- | progs/demos/gears.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/progs/demos/gears.c b/progs/demos/gears.c index e9061ed6c92..fc797eb904c 100644 --- a/progs/demos/gears.c +++ b/progs/demos/gears.c @@ -1,4 +1,3 @@ - /* * 3-D gear wheels. This program is in the public domain. * @@ -28,6 +27,7 @@ static GLint T0 = 0; static GLint Frames = 0; static GLint autoexit = 0; + /** Draw a gear wheel. You'll probably want to call this function when @@ -215,7 +215,14 @@ draw(void) static void idle(void) { - angle += 2.0; + static double t0 = -1.; + double dt, t = glutGet(GLUT_ELAPSED_TIME) / 1000.0; + if (t0 < 0.0) + t0 = t; + dt = t - t0; + t0 = t; + + angle += 70.0 * dt; /* 90 degrees per second */ glutPostRedisplay(); } |