py5graphics_get_pixels.md

Py5Graphics.get_pixels()

Reads the color of any pixel or grabs a section of an Py5Graphics object canvas.

Description

Reads the color of any pixel or grabs a section of an Py5Graphics object canvas. If no parameters are specified, the entire canvas is returned. Use the x and y parameters to get the value of one pixel. Get a section of the Py5Graphics drawing surface by specifying additional w and h parameters. When getting an image, the x and y parameters define the coordinates for the upper-left corner of the returned image, regardless of the current .

If the pixel requested is outside of the Py5Graphics object canvas, 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 color_mode(HSB), the numbers returned will be in RGB format.

If a width and a height are specified, get_pixels(x, y, w, h) returns a Py5Image corresponding to the part of the original Py5Image where the top left pixel is at the (x, y) position with a width of w a height of h.

Getting the color of a single pixel with get_pixels(x, y) is easy, but not as fast as grabbing the data directly from or . The equivalent statement to get_pixels(x, y) using is pixels[y*width+x]. Using it is np_pixels[y, x]. See the reference for and for more information.

This method is the same as but linked to a Py5Graphics object. To see example code for how it can be used, see .

Underlying Processing method: PGraphics.get

Signatures

get_pixels() -> Py5Image

get_pixels(
    x: int,  # x-coordinate of the pixel
    y: int,  # y-coordinate of the pixel
    /,
) -> int

get_pixels(
    x: int,  # x-coordinate of the pixel
    y: int,  # y-coordinate of the pixel
    w: int,  # width of pixel rectangle to get
    h: int,  # height of pixel rectangle to get
    /,
) -> Py5Image

Updated on April 15, 2023 22:56:12pm UTC