- Processing
- p5.js
- Processing.py
- Processing for Android
- Processing for Pi

- Processing Foundation

This reference is for Processing 3.0+. If you have a previous version, use the reference included with your software in the Help menu. If you see any errors or have suggestions, please let us know. If you prefer a more technical reference, visit the Processing Core Javadoc and Libraries Javadoc.

Name | ### setup()
Examples |
    int x = 0;

    void setup() {
      size(200, 200);
      background(0);
      noStroke();
      fill(102);
    }

    void draw() {
      rect(x, 10, 2, 80);
      x = x + 1;
    }
    int x = 0;

    void setup() {
      fullScreen();
      background(0);
      noStroke();
      fill(102);
    }

    void draw() {
      rect(x, height*0.2, 1, height*0.6);
      x = x + 2;
    }
Description | The setup() function is run once, when the program starts. It's used to define initial enviroment properties such as screen size and to load media such as images and fonts as the program starts. There can only be one setup() function for each program and it shouldn't be called again after its initial execution. If the sketch is a different dimension than the default, the size() function or fullScreen() function must be the first line in setup(). Note: Variables declared within setup() are not accessible within other functions, including draw().
Syntax |
    setup()
Returns | void
Related | size() loop() noLoop() draw()

Updated on January 1, 2021 03:38:05am EST
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