import pitaru.sonia_v2_9.*;

Sample mySample1, mySample2, mySample3, mySample4;
Sample mySample1F, mySample2F, mySample3F, mySample4F;

float[] data1, data2, data3, data4;
float[] data1F, data2F, data3F, data4F;

int sr = 11025;  // sampling rate


void setup()
{
  size(200, 200);
  colorMode(HSB, 360, height, height);
  Sonia.start(this);

  mySample1 = new Sample("flauto.aif");
    mySample2 = new Sample("oboe.wav");
      mySample3 = new Sample("tromba.wav");
        mySample4 = new Sample("violino.wav");

  mySample1F = new Sample("flauto.aif");
    mySample2F = new Sample("oboe.wav");
      mySample3F = new Sample("tromba.wav");
        mySample4F = new Sample("violino.wav");

  data1  = new float[mySample1.getNumFrames()]; // creates new arrays the length of the sample
    data2  = new float[mySample2.getNumFrames()]; // for the original sound
      data3  = new float[mySample3.getNumFrames()];
        data4  = new float[mySample4.getNumFrames()];

  data1F  = new float[mySample1.getNumFrames()]; // creates new arrays the length of the sample
    data2F  = new float[mySample2.getNumFrames()]; // for the filtered sound
      data3F  = new float[mySample3.getNumFrames()];
        data4F  = new float[mySample4.getNumFrames()];

  mySample1.read(data1);
    mySample2.read(data2);
      mySample3.read(data3);
        mySample4.read(data4);
}

void draw()
{
  stroke(255);
  strokeWeight(1);
  fill(0, 88, 88);
  ellipseMode(CORNER);
  ellipse(50,50,100,100);

  beginShape(LINES);
  vertex(50, 100);
  vertex(90, 100);

  vertex(110, 100);
  vertex(150, 100);

  vertex(100, 50);
  vertex(100, 90);

  vertex(100, 110);
  vertex(100, 150);
  endShape();
}

void mouseReleased()
{

float ro;
float roLin;
float wc;


  // FLAUTO
  if ((mouseX > 95) && (mouseX < 105)&& (mouseY > 50)&& (mouseY < 90)) {

    roLin = (mouseY-49.99)/41;
    ro = pow(roLin,.33);
    wc = 298*(TWO_PI/sr);
    filtra(data1F, data1, wc, ro);

    mySample1F.write(data1F);
    mySample1F.play();
  }

  // OBOE
  if ((mouseX > 110) && (mouseX < 149)&& (mouseY > 95)&& (mouseY < 105)) {

    roLin = (149.99-mouseX)/41;
    ro = pow(roLin,.33);
    wc = 220*(TWO_PI/sr);
    filtra(data2F, data2, wc, ro);

    mySample2F.write(data2F);
    mySample2F.play();
  }

  // TROMBA
  if ((mouseX > 95) && (mouseX < 105)&& (mouseY > 110)&& (mouseY < 149)) {

    roLin = (149.99-mouseY)/41;
    ro = pow(roLin,.33);
    wc = 347*(TWO_PI/sr);
    filtra(data3F, data3, wc, ro);

    mySample3F.write(data3F);
    mySample3F.play();
  }

  // VIOLINO
  if ((mouseX > 50) && (mouseX < 90)&& (mouseY > 95)&& (mouseY < 105)) {

    roLin = (mouseX-49.99)/41;
    ro = pow(roLin,.33);
    wc = 294*(TWO_PI/sr);
    filtra(data4F, data4, wc, ro);

    mySample4F.write(data4F);
    mySample4F.play();
  }
}

//filtra = new function
void filtra(float[] DATAF, float[] DATA, float WC, float RO) {

  float G;
  float RO2;
  RO2 = pow(RO, 2);
  G = (1-RO)*sqrt(1-2*RO*cos(2*WC)+RO2)*4; // (*4) is for having it louder
 
  for(int i = 3; i < DATA.length; i++){
    DATAF[i] = G*DATA[i]+2*RO*cos(WC)*DATAF[i-1]-RO2*DATAF[i-2];//filtraggio ricorsivo
  }
}

// safely stop the Sonia engine upon shutdown.
public void stop(){
  Sonia.stop();
  super.stop();
  
}