a port of the Processing Visualization Language


example pic
PImage myImage = loadImage("topanga.jpg");

image(myImage, 0, 0);

PImage cp = get();

image(cp, 50, 0);
example pic
PImage myImage = loadImage("topanga.jpg");

image(myImage, 0, 0);

color cp = get(30, 20);


rect(30, 20, 55, 55);
Description Reads the color of any pixel or grabs a section of an image. If no parameters are specified, the entire image is returned. Get the value of one pixel by specifying an x,y coordinate. Get a section of the display window by specifying an additional width and height parameter. If the pixel requested is outside of the image window, black is returned. The numbers returned are scaled according to the current color ranges, but only RGB values are returned by this function. For example, even though you may have drawn a shape with colorMode(HSB), the numbers returned will be in RGB.

The imageMode() function changes the way the parameters work. For example, a call to imageMode(CORNERS) will change the width and height parameters to define the x and y values of the opposite corner of the image.

Getting the color of a single pixel with get(x, y) is easy, but not as fast as grabbing the data directly from pixels[]. The equivalent statement to "get(x, y)" using pixels[] is "pixels[y*width+x]". The (BETA) version of Processing requires calling loadPixels() to load the display window data into the pixels[] array before getting the values.

get(x, y)

get(x, y, width, height)
x int: x-coordinate of the pixel
y int: y-coordinate of the pixel
width int: width of pixel rectangle to get
height int: height of pixel rectangle to get
Usage Web & Application
Related set()

This reference is licensed under the CC BY-NC-SA 2.0 license:

Creative Commons License
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