- 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 | ### loadPixels()
Examples |
    int halfImage = width*height/2;
    PImage myImage = loadImage("apples.jpg");
    image(myImage, 0, 0);

    loadPixels();
    for (int i = 0; i < halfImage; i++) {
      pixels[i+halfImage] = pixels[i];
    }
    updatePixels();
Description | Loads a snapshot of the current display window into the pixels[] array. This function must always be called before reading from or writing to pixels[]. Subsequent changes to the display window will not be reflected in pixels until loadPixels() is called again. Certain renderers may or may not seem to require loadPixels() or updatePixels(). However, the rule is that any time you want to manipulate the pixels[] array, you must have previously called loadPixels(), and after changes have been made, call updatePixels(). Even if the renderer may not seem to use this function in the current Processing release, this will always be subject to change.
Syntax |
    loadPixels()
Returns | void
Related | pixels[] updatePixels()

Updated on July 4, 2018 11:56:43am EDT