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Apache License
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package net.simonvt.menudrawer; //from w w w . java2s . co m import android.view.animation.Interpolator; /** * Interpolator which, when drawn from 0 to 1, looks like half a sine-wave. Used for smoother opening/closing when * peeking at the drawer. */ class SinusoidalInterpolator implements Interpolator { @Override public float getInterpolation(float input) { return (float) (0.5f + 0.5f * Math.sin(input * Math.PI - Math.PI / 2.f)); } }