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package com.android.launcher3;
import android.animation.TimeInterpolator;
public class LogDecelerateInterpolator implements TimeInterpolator {
int mBase;
int mDrift;
final float mLogScale;
public LogDecelerateInterpolator(int base, int drift) {
mBase = base;
mDrift = drift;
mLogScale = 1f / computeLog(1, mBase, mDrift);
}
static float computeLog(float t, int base, int drift) {
return (float) -Math.pow(base, -t) + 1 + (drift * t);
}
@Override
public float getInterpolation(float t) {
return computeLog(t, mBase, mDrift) * mLogScale;
}
}
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