PlanetaryKeys.pde

/**
 * Planetary Keys
 * by tchnmncr @ hyperritual.com
 * for use with conductive-painted keyboard
 * and MaKey MaKey
 */

import ddf.minim.*;
import ddf.minim.signals.*;

Minim minim;
AudioOutput out;
SineWave sine;

public int ndx = 0; // index

void setup() {
  size(400, 400);

  minim = new Minim(this);
  // get a line out from Minim, default bufferSize is 1024,
  // default sample rate is 44100, bit depth is 16
  out = minim.getLineOut(Minim.MONO);
  // create a sine wave Oscillator, set to 440 Hz, at 0.5 amplitude,
  // sample rate from line out
  sine = new SineWave(440, 0.5, out.sampleRate());
  // add the oscillator to the line out
  out.addSignal(sine);
}

void draw() {
  switch(ndx) { // based on index value...
    case 0: // stop
      background(0);
      sine.setFreq(0);
      break;
    case 1: // Jupiter
      background(color(128,0,128)); // Violet
      sine.setFreq(466.16); // A#
      break;
    case 2: // Sun
      background(color(255,128,0)); // Orange
      sine.setFreq(293.66); // D
      break;
    case 3: // Mercury
      background(color(255,255,0)); // Yellow
      sine.setFreq(329.63); // E
      break;
    case 4: // Saturn
      background(color(64,0,192)); // Blue-Violet
      sine.setFreq(440); // A
      break;
    case 5: // Mars
      background(color(255,0,0)); // Red
      sine.setFreq(261.63); // C
      break;
    case 6: // Venus
      background(color(0,128,0)); // Green
      sine.setFreq(369.99); // F#
      break;
  }
}

void keyPressed() { // change index val when key pressed
  switch(key) {
    case 'w': // Jupiter
      ndx = 1;
      break;
    case 'a': // Sun
      ndx = 2;
      break;
    case 's': // Mercury
      ndx = 3;
      break;
    case 'd': // Saturn
      ndx = 4;
      break;
    case 'f': // Mars
      ndx = 5;
      break;
    case 'g': // Venus
      ndx = 6;
  }
}

void keyReleased() { // reset index val when key released
  ndx = 0;
}

void stop() {
  // close output and stop minim
  out.close();
  minim.stop();

  super.stop();
}