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67 lines
1.6 KiB
67 lines
1.6 KiB
/**
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* A drum pattern generator that creates a 4 beat pattern,
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* playtes it then generates another 4 beat pattern, and so on.
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* SoundCipher's callback facility is used to provide the loop
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* regeneration notification at the end of the pattern.
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* Simple drawing in time with the music is triggered by callbacks also.
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*
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* A SoundCipher example by Andrew R. Brown
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*/
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import arb.soundcipher.*;
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SCScore score = new SCScore();
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float[] r = new float[4];
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void setup() {
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noLoop();
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score.tempo(112);
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score.addCallbackListener(this);
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makeMusic();
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}
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void makeMusic() {
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score.empty();
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for (float i=0; i<16; i++) {
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if (i%8 == 0 || i%16 == 14) {
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score.addNote(i/4, 9, 0, 36, 100, 0.25, 0.8, 64);
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score.addCallback(i/4, 1);
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} else if (random(10) < 1) score.addNote(i/4, 9, 0, 36, 70, 0.25, 0.8, 64);
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if (i%8 == 4) {
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score.addNote(i/4, 9, 0, 38, 100, 0.25, 0.8, 64);
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score.addCallback(i/4, 2);
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} else if (random(10) < 2) score.addNote(i/4, 9, 0, 38, 60, 0.25, 0.8, 64);
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if(random(10) < 8) {
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score.addNote(i/4, 9, 0, 42, random(40) + 70, 0.25, 0.8, 64);
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} else score.addNote(i/4, 9, 0, 46, 80, 0.25, 0.8, 64);
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}
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score.addCallback(4, 0);
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score.play();
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}
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void handleCallbacks(int callbackID) {
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switch (callbackID) {
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case 0:
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score.stop();
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makeMusic();
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break;
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case 1:
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float w = random(20);
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r = new float[] {50-w, 50-w, w*2, w*2};
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redraw();
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break;
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case 2:
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r = new float[] {20, 20, 60, 60};
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redraw();
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break;
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}
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}
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void draw() {
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background(120);
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rect(r[0], r[1], r[2], r[3]);
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}
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void stop() {
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score.stop();
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}
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