View difference between Paste ID: bpqE8B3x and Bpg4CCAf

 import processing.serial.*;
 
 Serial myPort;  // Create object from Serial class
 int val;     // Data received from the serial port
 int valOld;
 float[][] matrix;
 
 
 
 void setup()
 {
   // I know that the first port in the serial list on my mac
   // is Serial.list()[0].
   // On Windows machines, this generally opens COM1.
   // Open whatever port is the one you're using.
   String portName = Serial.list()[0]; //change the 0 to a 1 or 2 etc. to match your port
   myPort = new Serial(this, portName, 115200);
   matrix = new float[20][20];
   size(1000,1000);
   for(int i=0;i<16;i++){
       for(int j=0;j<12;j++){
          matrix[j][i]=0;
       }
   }
 }
 
 void draw()
 {
   if (mousePressed == true)
   {                           //if we clicked in the window
     myPort.write('1');         //send a 1
     println("1");
   }
   if ( myPort.available() > 0)
   {  // If data is available,
     for(int i=0;i<12;i++){
       for(int j=0;j<16;j++){
 
         val= myPort.read();         // read it and store it in val
         matrix[j][i]=Integer.valueOf(val);
         //println(val);
         delay(10);
         if(myPort.read()==-1){
           break;
         }
       }
     }
   }
 delay(10);
 
 //if(val!=valOld){
 //    for(int i=0;i<12;i++){
 //      for(int j=0;j<16;j++){
 //        print(matrix[j][i]); //print it out in the console
 //        print('\t');
 //      }
 //    println();
 //  }
 //valOld=val;
 //}
   for(int i=0;i<12;i++){
     for(int j=0;j<16;j++){
      float x=i*120;
      float y=j*120;
      if(matrix[j][i]==49){
      fill(0,0,0);
      }
      else if(matrix[j][i]==51){
      fill(64,0,0);
      }
      else if(matrix[j][i]==52){
      fill(128,0,0);
      }
      else if(matrix[j][i]==53){
      fill(255,0,0);
      }
      ellipse(60+x,60+y,120,120);
      }
   }
 
 }