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Reference for Processing (BETA) version 0135+. If you have a previous version, use the reference included with your software. If you see any errors or have any comments, let us know.

Name

### updatePixels()

Examples

    int halfImage = width*height/2;
    PImage myImage = loadImage("topanga.jpg");
    image(myImage, 0, 0);

    loadPixels();
    for (int i = 0; i < halfImage; i++) {
      pixels[i+halfImage] = pixels[i];
    }
    updatePixels();

    int halfImage = width*height/2;
    PImage myImage = loadImage("towerFlip.jpg");
    image(myImage, 0, 0);

    loadPixels();
    for (int i = 0; i < halfImage; i++) {
      pixels[i+halfImage] = pixels[i];
    }
    updatePixels(50, 0, 50, 100);

Description

Updates the display window (or an image) when data in the pixels[] array has been modified. Use in conjunction with loadPixels(). If you're only reading pixels from the array, there's no need to call updatePixels() unless there are changes.
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 first call 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

    updatePixels()

Usage | Web & Application
Related | pixels[] loadPixels()

Updated on February 09, 2008 04:38:52pm PST