Draw immediately non possibile in loop?

denysmomo

If I have a loop in draw function it's not possible draw, i can see a new draw only when loop DRAW beginning again. How it's possible draw immediately example text() or line()? ( Inside a for cycle or while)

koogs

https://forum.processing.org/two/discussion/8087/what-are-setup-and-draw

screen is only updated when draw() finishes. so keep it short.

denysmomo

Ok I understand, it's possible create a some like subroutine or background task ?

koogs

show us what you have.

jeremydouglass

You are asking a question about specific kinds of solution without ever explaining what your problem is. I suspect that we could give you a better solution if you explained your problem is. You may be struggling with the idea that draw is a loop.

Here is a sketch that is drawn all at once:

void draw() {
  for (int i=0; i<height; i+=4) { // loop, counter, increment, end check
    line(0, i, width, i);
  }
}

Now we put the counter outside the draw loop, iterate inside the draw loop, and perhaps add a special condition for ending. Each time draw is called, it draws a line.

int i=0; // counter
void setup(){
  frameRate(2);
}
void draw() { // loop
  line(0, i, width, i);
  i+=4; // increment
  if(i>=height){ // end check
    noLoop();
  }
}