textile touch matrix

CODE FOR PROCESSING

import processing.serial.*;

int t1_val = 0;
int t2_val = 0;
int t3_val = 0;

boolean t1_triggered = false;
boolean t2_triggered = false;
boolean t3_triggered = false;

int gridsize = 10;
int pad = 80;

Serial myPort;

void setup () {
  size(400,400);        // window size
 
 ellipseMode(CENTER);
 
  // List all the available serial ports
  //println(Serial.list());
  String portName = Serial.list()[1];
  myPort = new Serial(this,   portName, 9600);
  myPort.bufferUntil('\n');
  
  gridsize = int((width-pad )*.3333);
  myPort.write('s');
  
}

void serialEvent(Serial myport) {
  String portData = myport.readString();
  
  String[] stringData = split(portData, ',');
  
  float[] values = float(stringData);
  
  t1_val = int(values[0]);
  t2_val = int(values[1]);
  t3_val = int(values[2]);
  
     if(int(values[3]) == 1 ){t1_triggered=true; }else{ t1_triggered = false; }
     if(int(values[4]) == 1 ){t2_triggered=true; }else{ t2_triggered = false; }
     if(int(values[5]) == 1 ){t3_triggered=true; }else{ t3_triggered = false; }
   
   
  
  
  myPort.write('s');
}




void draw(){

  noStroke();
   background(222);
   fill(22);
  
  if(t1_triggered){fill(2);}else{fill(142);}
   ellipse(pad,pad, t1_val, t1_val);
  
   if(t2_triggered){fill(2);}else{fill(142);}
   ellipse(pad+gridsize,pad, t2_val, t2_val);
   
    if(t3_triggered){fill(2);}else{fill(142);}
   ellipse(pad+gridsize*2,pad, t3_val, t3_val);
  
}

CODE FOR ARDUINO/ESP32

// ----------------------------------
// -------MAIN LOOP -----------------
// ----------------------------------
 
// initalize the aTouch objects : aTouch namewahtevet(yourpinnumber);
aTouch touch1(2);
aTouch touch2(4);
aTouch touch3(12);
 
void setup() {
   
  Serial.begin(9600);
  Serial.println("0,0,0");
 
}
 
void loop() {
  
  // simply read input and do some calc
  touch1.readAndProcessInput();
  touch2.readAndProcessInput();
  touch3.readAndProcessInput();
 
 
if (Serial.available()>0){

   Serial.print(touch1.smoothed_val);
   Serial.print(",");
   Serial.print(touch2.smoothed_val);
   Serial.print(",");
   Serial.print(touch3.smoothed_val);
   Serial.print(",");
   if(touch1.is_triggered){Serial.print("1");}else{Serial.print("2");}
    Serial.print(",");
   if(touch2.is_triggered){Serial.print("1");}else{Serial.print("2");}
    Serial.print(",");
   if(touch3.is_triggered){Serial.println("1");}else{Serial.println("2");}
   
}

 
   
  delay(30);
 
}
// ----------------------------------
// ------- TRXYS TOUCH HELPERS ------
// ----------------------------------
// ( put this code PRIOR to your mainloop code or you will get nice errors :) )
 
  // simple lerp helper function
 
float return_lerp(float _s, int _target,int _time){
  
   _s = _s + (( float(_target) - _s)/float(_time));
   return _s;
    
}
 
class aTouch {
  private:
    bool prev_touch_state = false;
    byte pin;
    int smooth_time = 3;
    int trigger_threshold = 15;
    long ts = 0;
  public:
    int current_val = 0;
    int smoothed_val = 0;
    int diff_val = 0;
    bool is_triggered = false;
    bool on_pressed = false;
    bool on_released = false;
     bool is_holded = false;
    aTouch(byte pin) {
     this->pin = pin;
    }
     
 
    void readAndProcessInput() {
 
        // reset interaction states
        on_pressed = false;
        on_released = false;
         
         // directly read out values TWICE = BUGFIX for debouncing 
         current_val = touchRead(pin);
         delayMicroseconds(10);
         current_val = touchRead(pin);
 
        //calculate smoothed input values 
         smoothed_val = return_lerp(smoothed_val,current_val,smooth_time);
 
         // calc current differential sum of button
          diff_val =   smoothed_val - current_val;
 
          // check if there is a noticable difference input values
          if(  diff_val  > trigger_threshold){
 
              if(prev_touch_state == false){
                is_triggered = true;
                prev_touch_state = is_triggered;
                on_pressed = true;
                ts = millis(); // set timestamp for hold routine
             }
              
          }else if( diff_val < trigger_threshold*-.4){
 
              if(prev_touch_state == true){
                is_triggered = false;
                 prev_touch_state = is_triggered;
                 on_released = true;
              }
                 
          }
 
 
          // calculate timed holding function
           
          if( ts + 2500 < millis() && is_triggered){
 
                
              is_holded = true;
          }else{
 
              is_holded = false;
           }
       
     }
 
 
     void printAllMetadata() {
 
           // only use this on one touchinput only - it will skrew up else
           Serial.print (on_pressed);
           Serial.print(","); 
           Serial.print (on_released);
           Serial.print(","); 
           Serial.print (is_triggered);
           Serial.print(","); 
           Serial.print (current_val);
           Serial.print(","); 
           Serial.println(smoothed_val);
            
 
       
       
     }
};