How to draw and update each change

catherinelien22

I am trying to calculate on how to draw a line and I need to run the calculations until the error is small, but my point is how can I draw a line without it displaying the result immediately?

I have a for loop that calculates and updates my variables and until the error is small, I use those variables to draw my line. I want to draw the line changing as my variables are changing during the calculation. However, when I put that in my draw method and run it, it only displays the end result and not the line moving during the calculation. How can I do this???

koogs

draw() is a loop. rewrite your code so that it uses draw looping rather than your for loop. use a global variable rather than the loop index.

koogs

the minimal example is just

int i;

void setup() {
}

void draw() {
  println(i);
  i++;
}

catherinelien22

is there another way to not rewrite my code into the draw loop?

koogs

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

https://forum.processing.org/two/discussion/8085/i-display-images-in-sequence-but-i-see-only-the-last-one-why

in short: no