- (void)accelerateWithX:(float)x Y:(float)y Z:(float)z
{
    // Use double filtering for passed coords
    acceleration[0] = x * kFilteringFactor + acceleration[0] * (1.0 - kFilteringFactor);
    x = x - acceleration[0];
    
    acceleration[1] = y * kFilteringFactor + acceleration[1] * (1.0 - kFilteringFactor);
    y = y - acceleration[1];
     
    acceleration[2] = z * kFilteringFactor + acceleration[2] * (1.0 - kFilteringFactor);
    z = z - acceleration[2];
}