java - stop and restart flashing colors in processing -

i have following code flashes colors red , white. want make change i'm not sure how do. flashing 2 colors stopped 3 seconds , begins again.

float delay = 1; // 1 frame  void setup() {   size(200, 200); }  void draw() {    background(96);   fill(255);   if(framecount%(2*delay)<delay) fill(255, 0, 0);   rect(20, 20, 100, 100); } 

method 1

as guy hat suggested, draw rectangle when framecount%360 < 180

method 2

use timer:

float delay = 1; // 1 frame long n;  void setup() {   size(200, 200);   n = millis(); }  void draw() {    background(96);   fill(255);   if (framecount%(2*delay)<delay) {     fill(255, 0, 0);   }   if (millis() - n < 3000) // if 3 seconds haven't yet passed, show rectangle   {       rect(20, 20, 100, 100);   }   else if (millis() - n > 6000) // if 6 seconds have passed, reset timer   {     n = millis();   } }