import processing.serial.*;
Serial myPort; int r;
void setup() {
println("Start15:54, 23 November 2021 (UTC)15:54, 23 November 2021 (UTC)15:54, 23 November 2021 (UTC)15:54, 23 November 2021 (UTC)15:54, 23 November 2021 (UTC)15:54, 23 November 2021 (UTC)15:54, 23 November 2021 (UTC)~~");
size(600, 600); // window size randomSeed(second()); // initialize random number r = width;
println(Serial.list());
myPort = new Serial(this, Serial.list()[2], 9600);
myPort.bufferUntil('\n'); // store data in buffer
}
void draw() {
background(255); fill(random(0,255), random(0,255), random(0,255)); // fill with random color ellipse(width/2, height/2, r, r); // draw a circle (스케치 실행창에 원을 그림) line(width/2, 0, width/2, height); // draw a line line(0, height/2, width, height/2); // draw a line
fill(0, 120); // black, transparency 120 textAlign(CENTER, CENTER); textSize(r/2); text(r, width/2, height/2); // express distance in the window (스케치 실행창에 거리측정값 표현)
}
void serialEvent(Serial p) { // Read Serial port value
String response = p.readStringUntil('\n').trim(); // Read Stored Data
r = int(response);
r = constrain(r, 5, width) ; // r is MIN: 5 ~ MAX: width
}