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 easeInOutElastic(qreal t)
{
const qreal a = 0;
const qreal p = 0.3;
return easeInOutElastic(t, a, p);
}
