void LfoController::updateValueBuffer()
{
m_phaseOffset = m_phaseModel.value() / 360.0;
float * values = m_valueBuffer.values();
float phase = m_currentPhase + m_phaseOffset;
// roll phase up until we're in sync with period counter
m_bufferLastUpdated++;
if( m_bufferLastUpdated < s_periods )
{
int diff = s_periods - m_bufferLastUpdated;
phase += static_cast<float>( engine::framesPerTick() * diff ) / m_duration;
m_bufferLastUpdated += diff;
}
for( int i = 0; i < m_valueBuffer.length(); i++ )
{
const float currentSample = m_sampleFunction != NULL
? m_sampleFunction( phase )
: m_userDefSampleBuffer->userWaveSample( phase );
values[i] = qBound( 0.0f, m_baseModel.value() + ( m_amountModel.value() * currentSample / 2.0f ), 1.0f );
phase += 1.0 / m_duration;
}
m_currentPhase = absFraction( phase - m_phaseOffset );
}
// should be called every time phase-offset is changed...
inline void Oscillator::recalcPhase()
{
if( !typeInfo<float>::isEqual( m_phaseOffset, m_ext_phaseOffset ) )
{
m_phase -= m_phaseOffset;
m_phaseOffset = m_ext_phaseOffset;
m_phase += m_phaseOffset;
}
m_phase = absFraction( m_phase )+2; // make sure we're not running
// negative when doing PM
}
