qreal value(qreal t)
{
qreal p = (_p < 0) ? qreal(0.3) : _p;
qreal a = (_a < 0) ? qreal(1.0) : _a;
switch(_t) {
case In:
return easeInElastic(t, a, p);
case Out:
return easeOutElastic(t, a, p);
case InOut:
return easeInOutElastic(t, a, p);
case OutIn:
return easeOutInElastic(t, a, p);
default:
return t;
}
}
double valueForProgress ( double a_fProgress ) const
{
double fPeriod = (m_fPeriod < 0) ? 0.3 : m_fPeriod;
double fAmplitude = (m_fAmplitude < 0) ? 1.0 : m_fAmplitude;
switch ( m_eType )
{
case In:
return easeInElastic ( a_fProgress, fAmplitude, fPeriod );
case Out:
return easeOutElastic ( a_fProgress, fAmplitude, fPeriod );
case InOut:
return easeInOutElastic ( a_fProgress, fAmplitude, fPeriod );
case OutIn:
return easeOutInElastic ( a_fProgress, fAmplitude, fPeriod );
default:
return a_fProgress;
}
}
static qreal easeOutInElastic(qreal t)
{
const qreal a = 0;
const qreal p = 0.3;
return easeOutInElastic(t, a, p);
}
