//by Jia Tao
//2009.11


// Import the Sonia library
import pitaru.sonia_v2_9.*;

//initial key's position
int mx = 30;
int my = 10;
int r = 20; //size of each key
int rNum = 25;// how many keys on each colomn
int cNum = 47;//how many keys on each row



//initiate the first character
int a = 32;
//array for the postion of all keys
int[] positionX = new int[cNum];
int[] positionY = new int[rNum];
//starting number to store charArray
int ch = 0;


void setup() {
  size(980,660);
  Sonia.start(this); // Start Sonia engine.
  LiveInput.start(); // Start listening to the microphone
  smooth();
  background(80);

  //set up font type
  String s = "Courier";
  PFont font = createFont(s, 9);
  textFont(font);

  //draw round keys
  strokeWeight(0.5);//thin outline

  rectMode(CENTER);

  for(int i = 0; i< rNum; i++){
    for(int j = 0; j< cNum; j++){
      fill(255);
      //store every key's position
      positionX[j] = mx;
      positionY[i] = my;
      //draw the row of keys
      rect(mx, my,r,r);   
      fill(0);//black
      text(char(a), positionX[j]-2, positionY[i]+2);
      //store everykey's char

      mx+=20;
      a++;
    }
    //go to the next row
    mx = 30;
    my+=20;
  }



}

void draw() {
  // Get the overall volume (between 0 and 1.0)
  float vol = LiveInput.getLevel();

  //locate the row and the column of the picked chars
  int pickedC = int(random(cNum));
  int pickedR = int(random(rNum));

  //specify the position the picked char
  int x = positionX[pickedC];
  int y = positionY[pickedR];
  rectMode(CENTER);

  //array for char
  char[] charArray = new char[2000];

  // If the volume is greater than 0.01 a rectangle is drawn at a random location in the window. 
  // The louder the volume, the larger the rectangle.
  if (vol > 0.01) {


    noStroke();
    fill(random(255),random(255),random(255),180);
    rect(x,y,r,r );

    
    //calculate the char on certain row and column
    int whichChar = (31+pickedC+1+(pickedR*cNum));
    //store the picked chars
    charArray[ch] = char(whichChar);

    ch++;



  }
  //initiate the place of "typed" chars
  int charX = 30;
  int charY = 515;
//displays text in the textfield
  for (int i = 0; i< 2000; i++){
    if (charX< 940){

    text(charArray[i],charX,charY);
    charX+=9;
  }else {
  charX = 30;
  charY +=10;
  }
  
  }
  rectMode(CORNER);
  // Graph the overall volume
  // First draw a background strip
  fill(255);
  rect(0,0,20,height);
  rect(960,0,980,height);
  // Then draw a rectangle size according to volume
  fill(random(255),random(255),random(255));
  rect(0,height-vol*height,20,vol*height); 
  rect(960,height-vol*height,980,vol*height); 
}

// Close the sound engine
public void stop() {
  Sonia.stop();
  super.stop();
}