Processing × スクーミー ③～画面のボタンでLEDを操作～【Java】

int ledPin = 10;            

void setup() {
  Serial.begin(9600);
  pinMode(ledPin, OUTPUT);
  }

void loop() {
  if(Serial.available() > 0){
    char val = Serial.read();

    if(val == 'h'){
      digitalWrite(ledPin, HIGH);
    }else if(val == 'l'){
      digitalWrite(ledPin, LOW);
    }
  }
}

PBtn btn = new PBtn(50,50,100,50);  
import processing.serial.*;
 
Serial myPort;
 
void setup() { 
  size(200, 200); 
  noStroke(); 
  frameRate(10); 
  myPort = new Serial(this, Serial.list()[0], 9600);
  btn.display(0);
} 
 
void draw() { 
} 

void mousePressed(){
  if(btn.areachk() == 1)
    btn.display(1);
    myPort.write('h');
}

void mouseReleased(){
  if(btn.areachk() == 1)
    btn.display(0);
    myPort.write('l'); 
}
 
class PBtn { 
  int x, y, w, h; 
  PBtn (int xpos,int ypos,int wb,int hb) {  
    x = xpos; 
    y = ypos; 
    w = wb; 
    h = hb;
  }    
  void display(int stat){
     
    int col_top;
    int col_right;
    int col_bottom;
    int col_left;
   
    if(stat == 0){
      col_top = 230;
      col_right = 100;
      col_bottom = 80;
      col_left = 210;
    }
    else {
      col_top = 80;
      col_right = 210;
      col_bottom = 230;
      col_left = 100;
    }
   
    fill(255, 255, 0);
    rect(x,y,w,h);
    fill(col_top);
    quad(x-10, y-10, x+w+10, y-10, x+w, y, x, y);
    fill(col_right);
    quad(x+w, y, x+w+10, y-10, x+w+10, y+h+10, x+w, y+h);
    fill(col_bottom);
    quad(x, y+h, x+w, y+h, x+w+10, y+h+10, x-10, y+h+10);
    fill(col_left);
    quad(x-10, y-10, x, y, x, y+h, x-10, y+h+10);
    textSize(24);
    fill(0);
    text("PUSH",x+15, y+h+60); 
    text("LED OFF",x-0, y+h+80); 
  }
   
  int areachk(){
    if(mouseX > x && mouseX < x+w && mouseY > y && mouseY < y+h) return 1;
    else return 0;
  }
}