The Image class is used to create images that can be displayed easily on the device’s LED matrix. Given an image object it’s possible to display it via the display API:
display.show(Image.HAPPY)
There are four ways in which you can construct an image:
Image() - Create a blank 5x5 image
Image(string) - Create an image by parsing the string, a single character returns that glyph
Image(width, height) - Create a blank image of given size
Image(width, height, buffer) - Create an image from the given buffer
If string is used, it has to consist of digits 0-9 arranged into lines, describing the image, for example:
image = Image("90009:"
"09090:"
"00900:"
"09090:"
"90009")
will create a 5×5 image of an X. The end of a line is indicated by a colon. It’s also possible to use a newline (n) to indicate the end of a line like this:
image = Image("90009\n"
"09090\n"
"00900\n"
"09090\n"
"90009")
The other form creates an empty image with width columns and height rows. Optionally buffer can be an array of width``×``height integers in range 0-9 to initialize the image:
Image(2, 2, b'\x08\x08\x08\x08')
or:
Image(2, 2, bytearray([9,9,9,9]))
Will create a 2 x 2 pixel image at full brightness.
Note
Keyword arguments cannot be passed to buffer.
Return the number of columns in the image.
Return the numbers of rows in the image.
Set the brightness of the pixel at column x and row y to the value, which has to be between 0 (dark) and 9 (bright).
This method will raise an exception when called on any of the built-in read-only images, like Image.HEART.
Return the brightness of pixel at column x and row y as an integer between 0 and 9.
Return a new image created by shifting the picture left by n columns.
Same as image.shift_left(-n).
Return a new image created by shifting the picture up by n rows.
Same as image.shift_up(-n).
Return a new image by cropping the picture to a width of w and a height of h, starting with the pixel at column x and row y.
Return an exact copy of the image.
Return a new image by inverting the brightness of the pixels in the source image.
Set the brightness of all the pixels in the image to the value, which has to be between 0 (dark) and 9 (bright).
This method will raise an exception when called on any of the built-in read-only images, like Image.HEART.
Copy the rectangle defined by x, y, w, h from the image src into this image at xdest, ydest. Areas in the source rectangle, but outside the source image are treated as having a value of 0.
shift_left(), shift_right(), shift_up(), shift_down() and crop() can are all implemented by using blit(). For example, img.crop(x, y, w, h) can be implemented as:
def crop(self, x, y, w, h):
res = Image(w, h)
res.blit(self, x, y, w, h)
return res
The Image class also has the following built-in instances of itself included as its attributes (the attribute names indicate what the image represents):
Image.HEART
Image.HEART_SMALL
Image.HAPPY
Image.SMILE
Image.SAD
Image.CONFUSED
Image.ANGRY
Image.ASLEEP
Image.SURPRISED
Image.SILLY
Image.FABULOUS
Image.MEH
Image.YES
Image.NO
Image.CLOCK12,Image.CLOCK11,Image.CLOCK10,Image.CLOCK9,Image.CLOCK8,Image.CLOCK7,Image.CLOCK6,Image.CLOCK5,Image.CLOCK4,Image.CLOCK3,Image.CLOCK2,Image.CLOCK1
Image.ARROW_N,Image.ARROW_NE,Image.ARROW_E,Image.ARROW_SE,Image.ARROW_S,Image.ARROW_SW,Image.ARROW_W,Image.ARROW_NW
Image.TRIANGLE
Image.TRIANGLE_LEFT
Image.CHESSBOARD
Image.DIAMOND
Image.DIAMOND_SMALL
Image.SQUARE
Image.SQUARE_SMALL
Image.RABBIT
Image.COW
Image.MUSIC_CROTCHET
Image.MUSIC_QUAVER
Image.MUSIC_QUAVERS
Image.PITCHFORK
Image.XMAS
Image.PACMAN
Image.TARGET
Image.TSHIRT
Image.ROLLERSKATE
Image.DUCK
Image.HOUSE
Image.TORTOISE
Image.BUTTERFLY
Image.STICKFIGURE
Image.GHOST
Image.SWORD
Image.GIRAFFE
Image.SKULL
Image.UMBRELLA
Image.SNAKE
Image.SCISSORS
Finally, related collections of images have been grouped together:
* ``Image.ALL_CLOCKS`` * ``Image.ALL_ARROWS``Operations
Get a compact string representation of the image.
Get a readable string representation of the image.
Create a new image by adding the brightness values from the two images for each pixel.
Create a new image by multiplying the brightness of each pixel by n.
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