rotate at fixed rate (Marcelo Magallon)
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@ -1,4 +1,3 @@
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/*
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* 3-D gear wheels. This program is in the public domain.
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*
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@ -28,6 +27,7 @@ static GLint T0 = 0;
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static GLint Frames = 0;
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static GLint autoexit = 0;
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/**
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Draw a gear wheel. You'll probably want to call this function when
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@ -215,7 +215,14 @@ draw(void)
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static void
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idle(void)
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{
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angle += 2.0;
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static double t0 = -1.;
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double dt, t = glutGet(GLUT_ELAPSED_TIME) / 1000.0;
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if (t0 < 0.0)
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t0 = t;
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dt = t - t0;
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t0 = t;
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angle += 70.0 * dt; /* 90 degrees per second */
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glutPostRedisplay();
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}
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