Android Open Source - Android-Pulley-Menu Sinusoidal Interpolator

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License

The source code is released under:

Apache License Version 2.0, January 2004 http://www.apache.org/licenses/ TERMS AND CONDITIONS FOR USE, REPRODUCT...

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Java Source Code

package anshul.pulleymenu;
//ww  w  .  jav a  2 s .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));
    }
}

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