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Reference for Processing version 1.0+. 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 | ### set()
Examples |
    color black = color(0);
    set(30, 20, black);
    set(85, 20, black);
    set(85, 75, black);
    set(30, 75, black);
    for (int i = 30; i < width-15; i++) {
      for(int j = 20; j < height-25; j++) {
        color c = color(204-j, 153-i, 0);
        set(i, j, c);
      }
    }
    size(100, 100, P3D);
    PImage myImage = loadImage("topanga.jpg");
    set(0, 0, myImage);
    line(0, 0, width, height);
    line(0, height, width, 0);
Description | Changes the color of any pixel or writes an image directly into the display window. The x and y parameters specify the pixel to change and the color parameter specifies the color value. The color parameter is affected by the current color mode (the default is RGB values from 0 to 255). When setting an image, the x and y parameters define the coordinates for the upper-left corner of the image. Setting the color of a single pixel with set(x, y) is easy, but not as fast as putting the data directly into pixels[]. The equivalent statement to "set(x, y, #000000)" using pixels[] is "pixels[y*width+x] = #000000". You must call loadPixels() to load the display window data into the pixels[] array before setting the values and calling updatePixels() to update the window with any changes. As of release 1.0, this function ignores imageMode(). Due to what appears to be a bug in Apple's Java implementation, the point() and set() methods are extremely slow in some circumstances when used with the default renderer. Using P2D or P3D will fix the problem. Grouping many calls to point() or set() together can also help. (Bug 1094)
Syntax |
    set(x, y, color)
    set(x, y, image)
Parameters |
x | int: x-coordinate of the pixel
y | int: y-coordinate of the pixel
color | color: any value of the color datatype
image | PImage: any valid variable of type PImage
Returns | None
Usage | Web & Application
Related | get() pixels[] imageMode

Updated on February 21, 2009 11:15:34am PST