Espirografico

/*
ESPIROGRAFICO v.0.1
Curves and lines appear on central axis.
Now with sound (mod of synthesizesound minim example)
Instructions: Click and drag to draw.

KEYS:
A: Clean canvas.
S: Save image.
1-5: Change stroke and sound.
*/

// required minim library
import ddf.minim.*;
import ddf.minim.ugens.*;

Minim minim;
AudioOutput out;
Oscil wave;

void setup(){
  size(1280,720,P2D);
  background(200);
  smooth();
  cursor(CROSS);
  stroke (100);
  strokeWeight(0.5);
  noFill();
  ellipseMode(CENTER);

  minim = new Minim(this);
  out = minim.getLineOut();
  wave = new Oscil( 100, 0.5f, Waves.SINE );
  wave.patch(out);
}

void draw(){
 
  if (mousePressed){

  float amp = map(mouseY, 0, height, 1, 0);
  wave.setAmplitude(amp);
  float freq = map(mouseX, 0, width, 110, 880);
  wave.setFrequency(freq);

  line(width/2,height/2,mouseX+50,mouseY+50);
  ellipse(width/2,height/2,mouseX+50,mouseY+50);
}

// CLEAN CANVAS
if (keyPressed){
  if (key=='a' || key=='A'){
  background(200);
  }
}

// SAVE IMAGE
  if (keyPressed){
  if (key=='s' || key=='S'){
   saveFrame("espirografico-######.png");
  }
}

}

// CHANGE WAVES

void keyPressed()
{
  switch( key )
  {
    case '1':
      stroke(100,random(100));
      wave.setWaveform( Waves.SINE );
      break;
   
    case '2':
      stroke(150,random(100));
      wave.setWaveform( Waves.TRIANGLE );
      break;
   
    case '3':
      stroke(255,random(100));
      wave.setWaveform( Waves.SAW );
      break;
 
    case '4':
      strokeWeight(random(10));
      wave.setWaveform( Waves.SQUARE );
      break;
   
    case '5':
      wave.setWaveform( Waves.QUARTERPULSE );
      break;
   
    default: break;
  }
}

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