How do I make a line that is in the left corner and that I can move with the mouse but leave notrail

Xaniac

So basically a friend told me to do that and I'm not that good at processing so, I Think he ment that by movign the mouse the line would follow me but not draw any layers on the background, so how do I do this? Anyone? Codes from the sick coders?

kfrajer

Demo code below. Check the reference for documentation of each function. I recommend you review setup() and draw() specifically.

Kf

final int lineLen=25;
void setup(){
  size(400,400);
  stroke(255);
  strokeWeight(3);
}

void draw(){
  background(0);
  line(mouseX-lineLen,mouseY-lineLen,mouseX+lineLen,mouseY+lineLen);
}

jeremydouglass

not draw any layers on the background

You should also review the background() command in the reference.

• https://processing.org/reference/background_.html