From 92eddb0fd404624ca198f19e4088927701eec7f5 Mon Sep 17 00:00:00 2001
From: Brian Paul <brian.paul@tungstengraphics.com>
Date: Sun, 9 Jan 2005 17:37:50 +0000
Subject: better animate rate (Marcelo Magallon)

---
 progs/demos/geartrain.c | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

(limited to 'progs/demos/geartrain.c')

diff --git a/progs/demos/geartrain.c b/progs/demos/geartrain.c
index ec31e743ab..3feb2a0524 100644
--- a/progs/demos/geartrain.c
+++ b/progs/demos/geartrain.c
@@ -912,14 +912,18 @@ draw (void)
 }
 
 
-
-
 static void
 idle (void)
 {
     int i;
+    static double t0 = -1.;
+    double dt, t = glutGet(GLUT_ELAPSED_TIME) / 1000.0;
+    if (t0 < 0.0)
+       t0 = t;
+    dt = t - t0;
+    t0 = t;
     for (i = 0; i < number_of_gears; i++)
-      g[i].angle += g[i].angular_velocity;
+      g[i].angle += g[i].angular_velocity * dt;
     glutPostRedisplay();
 }
 
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