Feature: Display Abstraction

[timfi]

Closes #2

What's the idea?

One "nice to have" feature could be the addition of matrices that use other character sets for rendering. One nice set could be ▖▗▘▝▀▄▌▐▚▞▙▛▜▟█, i.e. a 2x2 grid per character.

Code

from dotmatrix import BlockMatrix

m = BlockMatrix(16, 8)

m.rectangle((0, 0), (15, 7))

print(m.render())

Output

▛▀▀▀▀▀▀▜
▌      ▐
▌      ▐
▌      ▐
▌      ▐
▌      ▐
▌      ▐
▙▄▄▄▄▄▄▟

from issue

---

How did I accomplish this?

To implement this I added the Display protocol/abstraction which describes all methods required for setting/getting pixel values and rendering said values to some useful output. The Braille logic has been moved to such a display (at dotmatrix.displays.Braille and remains the default display type. In addition to this I've also implemented a unicode block character display at dotmatrix.displays.Block.

Code

from dotmatrix import Matrix
from dotmatrix.displays import Block

m = Matrix(16, 16, display=Block)

m.rectangle((0, 0), (15, 15))
m.circle((7, 7), 7)

print(m.render())

Output

█▀▀██▀▀▀▀▀██▀▀▀█
█▄▀         ▀▄ █
█▀           ▀▄█
█             ██
█             ██
██           █ █
█ ▀▄▄     ▄▄▀  █
█▄▄▄▄█████▄▄▄▄▄█