I am trying to learn how to create offsets with mouse movement and I am coming up with an error message ("Duplicate method setup() in type")  with the following script that I can't figure out:

void setup() {
  size(100, 100);
  smooth();
  noStroke();
}

void draw() {
  background(126);
  ellipse(mouseX, mouseY, 33, 33);
}

void setup() {
  size(100, 100);
  smooth();
  noStroke();
}

void draw() {
  background(126);
  ellipse(mouseX, 16, 33, 33);
  ellipse(mouseX+20, 50, 33, 33);
  ellipse(mouseX-20, 84, 33, 33);
}

Thanks, in advance, for your help!

Can someone give me an example of the use of print() and printIn(), in the context of a specific function so I can see how it works? I'm a new programmer.

Thanks!

Hi,
As a total beginner with Processing, I created an exercise for myself. The idea is that a line will be drawn from (100, 50) to (mouseX, mouseY), starting with a blue background, and everytime the mouse is clicked the background changes color. So I got it to change from blue to green, but I can't figure out how to change to a third background color on the next mouse click. Can anyone help me with this?

Also, I don't understand why the drawing starts with a line from the upper left corner to the point of the first line at 100, 50. Can someone explain where the code is for this?

Here's what I have so far:

void setup() {
size(400, 400);
stroke(175, 200, 0, 150);
strokeWeight(8);
smooth();
background(0, 0, 200);
}

void draw() {
  smooth();
  line(100, 50, mouseX, mouseY);
  saveFrame("output.png");
 
}
void mousePressed() {
  background(0, 175,40);
  smooth();
}

THANKS, in advance, for your help!

I am a Processing beginner, and I am wondering if someone wouldn't mind explaining what is actually happening in the following lines of code that I'm having trouble interpreting:

for (int y = 0; y < height+45; y += 40) {
  fill(255, 140);
  ellipse(0, y, 40, 40);
}

Thanks!!

The following is work I did for a tutorial which gives me an error code saying can't find anything named "i". Can anyone help me figure out what I did wrong?

size(480, 120);
smooth();
strokeWeight(8);
for (int i = 20; i < 400; i += 60); {
 line(i, 40, i + 60, 80);
}

Thanks!