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rbnpi/Hydra Sketch2

Created December 31, 2022 22:30
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  1. rbnpi created this gist Dec 31, 2022.
    40 changes: 40 additions & 0 deletions Hydra Sketch2
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    //Sonic Pi controlled code using midi and audio input by Robin Newman
    // register WebMIDI
    navigator.requestMIDIAccess()
    .then(onMIDISuccess, onMIDIFailure);

    function onMIDISuccess(midiAccess) {
    console.log(midiAccess);
    var inputs = midiAccess.inputs;
    var outputs = midiAccess.outputs;
    for (var input of midiAccess.inputs.values()){
    input.onmidimessage = getMIDIMessage;
    }
    }

    function onMIDIFailure() {
    console.log('Could not access your MIDI devices.');
    }

    //create an array to hold our cc values and init to a normalized value
    var cc=Array(128).fill(0.5)

    getMIDIMessage = function(midiMessage) {
    var arr = midiMessage.data
    var index = arr[1]
    //console.log('Midi received on cc#' + index + ' value:' + arr[2]) // uncomment to monitor incoming Midi
    //var val = (arr[2]+1)/128.0 // normalize CC values to 0.0 - 1.0
    var val = arr[2]
    cc[index]=val
    }

    //cc[0] controls kaleid, cc[1]-cc[3] control rgb solid mask, cc[4] controls masks alpha: can blank the screen.
    //audio controls colour out of voronoi
    voronoi(3,0.3,-0.3).color(()=>a.fft[0]*3,0.9,-0.7)

    .scale(0.3,1)
    .kaleid(()=>cc[0])
    .luma(-0.8)
    .colorama(0.05,-0.6)
    .mult(solid(()=> cc[1],()=> cc[2],()=> cc[3],()=> cc[4]))
    .out(o0)
    56 changes: 56 additions & 0 deletions SonicPiCode.rb
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    #sonic pi code by Robin Newman, Dec 31 2022
    #drives sketch on hydra.ojack.xyz running on Chrome browser
    #requires Sonic Pi audio output looped back to Chrome browser
    use_midi_defaults channel: 1,port: "iac_driver_bus"
    set :kill,false
    midi_cc 4,1
    comment do #uncomment to stop Bass note will take time to die away
    midi_cc 4,0
    set :kill,true
    end
    use_midi_logging false
    use_debug false
    sf=2

    live_loop :mid0 do
    stop if get(:kill)
    midi_cc 0, [3,6,9,5,10,15].tick # sends to control 0 a random integer between 3 and 6
    sleep 0.125*sf
    end
    live_loop :mid1 do
    stop if get(:kill)
    midi_cc 1,[0,1].tick
    sleep 0.125*sf #rates of change of r,g,b cc all different
    end
    live_loop :mid2 do
    stop if get(:kill)
    midi_cc 2,[0,1,].tick
    sleep 0.25*sf
    end
    live_loop :mid3 do
    stop if get(:kill)
    midi_cc 3,[1,0,0,0,1,1,1,1].tick #mask out possibility of r,g,b cc all 0
    sleep 0.5*sf
    end

    with_fx :reverb,room: 0.7,mix: 0.7 do
    live_loop :aud do
    stop if get(:kill)
    if tick%64 == 0
    use_transpose [0,5,7,-5].tick(:tr)
    if look(:tr)==4
    set :kill,true
    midi_cc 4,0
    end
    synth :fm,note: (octs :e2,3),sustain: 10*0.125*sf,release: 64*0.125*sf,amp: 2
    end

    density dice(2) do
    use_synth :tb303
    k=play scale(:e2,:minor_pentatonic,num_octaves: 2).choose,release: 0.125*sf*2,cutoff: rrand_i(70,110)
    control k,cutoff: 100,cut_off_slide: 0.125*sf*2
    end
    sleep [0.125*sf,0.25*sf].choose
    end
    end