commit c1065ee977f70042e54a930a6cd3af819d4a9806
author Brian Paul <brian.paul@tungstengraphics.com> Sat Jan 08 23:52:01 2005 +0000
committer Brian Paul <brian.paul@tungstengraphics.com> Sat Jan 08 23:52:01 2005 +0000
tree 45053d22bc302bde8c627e9e8d2cc174a17c844a
parent 0261042bebe4c17afd3b581fac0ab5274dac3740

compute reasonable animate rate (Marcelo Magallon)

progs/samples/wave.c

diff --git a/progs/samples/wave.c b/progs/samples/wave.c
index 7ded49b..d3c4687 100644
--- a/progs/samples/wave.c
+++ b/progs/samples/wave.c
@@ -87,9 +87,26 @@
     255, 127, 127, 127,
 };
 
+#if !defined(GLUTCALLBACK)
+#define GLUTCALLBACK
+#endif
+
+
 void GLUTCALLBACK glut_post_redisplay_p(void)
 {
-      glutPostRedisplay();
+    static double t0 = -1.;
+    double t, dt;
+    t = glutGet(GLUT_ELAPSED_TIME) / 1000.;
+    if (t0 < 0.)
+       t0 = t;
+    dt = t - t0;
+
+    if (dt < 1./30.)
+        return;
+
+    t0 = t;
+
+    glutPostRedisplay();
 }
 
 static void Animate(void)