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74 lines
1.8 KiB
Plaintext
74 lines
1.8 KiB
Plaintext
4 years ago
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import themidibus.*;
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MidiBus myBus;
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int y = 0;
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float vel = 0;
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int MIN_NOTE = 36;
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int MAX_NOTE = 98;
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void setup() {
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size(1440, 900, P2D);
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// size(720, 820, P2D);
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background(0);
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myBus = new MidiBus(this, 0, -1);
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}
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void draw() {
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background(0, 0.0, 0);
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// if (countOff >= countOn) { return; }
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colorMode(HSB, 12, 1.0, 1.0, 1.0);
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noFill();
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int octave = y / 12;
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float oct = norm(octave, 2, 8) * 0.5;
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float hue = y % 12 + (2.0 * bend);
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stroke(hue, 0.8, 0.8, vel);
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strokeWeight(pow(vel, 1.3) * 80);
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float ny = height - (norm(y, MIN_NOTE, MAX_NOTE) * height);
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float dy = vel * bend * 120.0;
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bezier(0, ny, 0.25 * width, ny - dy, 0.75 * width, ny - dy, width, ny);
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}
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int countOn;
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void noteOn(int channel, int pitch, int velocity) {
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vel = norm(velocity, 0, 127);
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y = pitch;
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countOn++;
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println("<on " + countOn + " channel:" + channel + " pitch:" + pitch + " velocity:" + velocity + ">");
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}
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void noteOff(int channel, int pitch, int velocity) {
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countOn--;
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if (pitch == y) {
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vel = 0;
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}
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println("<off " + countOn + " channel:" + channel + " pitch:" + pitch + " velocity:" + velocity + ">");
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}
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void controllerChange(int channel, int number, int value) {
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if (channel == 0 && number == 2) {
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if (countOn > 0 || value == 0) {
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vel = norm(value, 0, 127);
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}
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return;
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}
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// println("<cc " + " channel:" + channel + " number:" + number + " value:" + value + ">");
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}
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float bend = 0.0;
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void rawMidi(byte[] data) { // You can also use rawMidi(byte[] data, String bus_name)
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int status = (int)(data[0] & 0xFF);
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switch (status) {
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case 176: // breath velocity
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return;
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case 144: // noteOn
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return;
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case 128: // noteOff
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return;
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case 224: // pitch bend
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bend = norm(data[1] & 127 | (data[2] & 127) << 7, 0, (1 << 14) - 1) * 2.0 - 1.0;
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return;
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}
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}
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