esp32-sk6812/src/Animation/ConnectingAnimation.cpp

#include "fasttrigon.h"

#include "Animation/ConnectingAnimation.h"

ConnectingAnimation::ConnectingAnimation(Fader *fader)
    : Animation(fader), m_stopping(false)
{}

void ConnectingAnimation::loop(uint64_t frame)
{
    std::size_t nstrip = m_fader->strips();
    uint8_t intensity = 0;

    if(frame == 0) {
        m_fader->fade_color(Fader::Color{0, 0, 0, 0});
    }

    for(std::size_t strip = 0; strip < nstrip; strip++) {
        intensity = (FASTTRIGON_8BIT(fasttrigon::fastsin(1 * frame * fasttrigon::LUT_SIZE / 60 + fasttrigon::LUT_SIZE*3/4)) + 127) / 4;

        Fader::Color c;
        c.b = intensity;

        m_fader->set_color(strip, 0, c);
    }

    // stop the animation at maximum level for smooth transition to ConnectionEstablishedAnimation
    if(m_stopping && intensity == 63) {
        m_running = false;
    }
}