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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 | ### background()
Examples |
    background(51);
    background(255, 204, 0);
    PImage b;
    b = loadImage("laDefense.jpg");
    background(b);
Description | The background() function sets the color used for the background of the Processing window. The default background is light gray. In the draw() function, the background color is used to clear the display window at the beginning of each frame. An image can also be used as the background for a sketch, however its width and height must be the same size as the sketch window. It is not possible to use transparency (alpha) in background colors with the main drawing surface, however they will work properly with createGraphics.
Syntax |
    background(gray)
    background(gray, alpha)
    background(value1, value2, value3)
    background(value1, value2, value3, alpha)
    background(color)
    background(color, alpha)
    background(hex)
    background(hex, alpha)
Parameters |
gray | int or float: specifies a value between white and black
alpha | int or float: opacity of the background
value1 | int or float: red or hue value (depending on the current color mode)
value2 | int or float: green or saturation value (depending on the current color mode)
value3 | int or float: blue or brightness value (depending on the current color mode)
color | color: any value of the color datatype
hex | int: color value in hexadecimal notation (i.e. #FFCC00 or 0xFFFFCC00)
Usage | Web & Application
Related | stroke() fill() tint() colorMode()

Updated on October 18, 2007 05:48:24am PDT