strike()

void MayaFlux::Nodes::Network::WaveguideNetwork::strike	(	double	position = 0.5,
		double	strength = 1.0
	)

Strike the string/tube with an impulse.

Parameters

position	Normalized strike position
strength	Excitation amplitude

Definition at line 261 of file WaveguideNetwork.cpp.

{
    position = std::clamp(position, 0.01, 0.99);
 
    if (m_exciter_type != ExciterType::CONTINUOUS) {
        m_exciter_type = ExciterType::NOISE_BURST;
        m_exciter_duration = 0.002;
        initialize_exciter();
    }
 
    if (m_segments.empty())
        return;
 
    auto& seg = m_segments[0];
    const size_t len = m_delay_length_integer;
    const auto strike_center = static_cast<size_t>(position * static_cast<double>(len));
    const size_t burst_width = std::max<size_t>(len / 10, 4);
    const double effective_strength = (m_exciter_type == ExciterType::CONTINUOUS)
        ? std::max(strength, 1.0)
        : strength;
 
    seg.p_plus = Memory::HistoryBuffer<double>(seg.p_plus.capacity());
    seg.p_minus = Memory::HistoryBuffer<double>(seg.p_minus.capacity());
 
    for (size_t s = 0; s < len; ++s) {
        const double dist = std::abs(static_cast<double>(s)
            - static_cast<double>(strike_center));
        const double window = std::exp(-(dist * dist)
            / (2.0 * static_cast<double>(burst_width * burst_width)));
        seg.p_plus.push(effective_strength * m_random_generator(-1.0, 1.0) * window);
    }
 
    if (m_exciter_type != ExciterType::CONTINUOUS) {
        m_exciter_active = false;
        m_exciter_samples_remaining = 0;
    }
}

References CONTINUOUS, initialize_exciter(), m_delay_length_integer, m_exciter_active, m_exciter_duration, m_exciter_samples_remaining, m_exciter_type, m_random_generator, m_segments, and NOISE_BURST.

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