diff options
| -rw-r--r-- | braille.js | 67 | ||||
| -rw-r--r-- | index.html | 38 | ||||
| -rw-r--r-- | lambda.js (renamed from script.js) | 0 |
3 files changed, 89 insertions, 16 deletions
diff --git a/braille.js b/braille.js new file mode 100644 index 0000000..8d94db7 --- /dev/null +++ b/braille.js @@ -0,0 +1,67 @@ +"use strict"; + +const OUTHEIGHT = 20; +const OUTWIDTH = 2 * OUTHEIGHT; +const HEIGHT = 3 * OUTHEIGHT; +const WIDTH = 2 * OUTWIDTH; +const BRAILLE = [ + "⠀", "⠁", "⠂", "⠃", "⠄", "⠅", "⠆", "⠇", "⠈", "⠉", "⠊", "⠋", "⠌", "⠍", "⠎", "⠏", + "⠐", "⠑", "⠒", "⠓", "⠔", "⠕", "⠖", "⠗", "⠘", "⠙", "⠚", "⠛", "⠜", "⠝", "⠞", "⠟", + "⠠", "⠡", "⠢", "⠣", "⠤", "⠥", "⠦", "⠧", "⠨", "⠩", "⠪", "⠫", "⠬", "⠭", "⠮", "⠯", + "⠰", "⠱", "⠲", "⠳", "⠴", "⠵", "⠶", "⠷", "⠸", "⠹", "⠺", "⠻", "⠼", "⠽", "⠾", "⠿", +]; + +let board = new Array(HEIGHT); +for (let i = 0; i < HEIGHT; i++) { + board[i] = new Array(WIDTH); +} + +function render(board) { + const out = new Array(OUTHEIGHT); + for (let i = 0; i < OUTHEIGHT; i++) { + out[i] = new Array(OUTWIDTH); + } + for (let y = 0; y < HEIGHT; y += 3) { + for (let x = 0; x < WIDTH; x += 2) { + let outx = x/2; + let outy = y/3; + let tl = board[y][x] ? 1 : 0; + let ml = board[y+1][x] ? 1 : 0; + let bl = board[y+2][x] ? 1 : 0; + let tr = board[y][x+1] ? 1 : 0; + let mr = board[y+1][x+1] ? 1 : 0; + let br = board[y+2][x+1] ? 1 : 0; + let idx = tl*1 + ml*2 + bl*4 + tr*8 + mr*16 + br*32; + let char = BRAILLE[idx]; + out[outy][outx] = char; + } + } + return out.reduce((a, r) => a + r.reduce((a2, c) => a2 + c) + "\n", ""); +} + +function renderFunction(board, fun, frame) { + for (let y = 0; y < HEIGHT; y++) { + for (let x = 0; x < WIDTH; x++) { + board[y][x] = fun(x, y, frame) ? true : null; + } + } + return render(board); +} + +function fun(x, y, frame) { + const l = HEIGHT / 3; + const m1 = Math.abs(y+frame) % l; + const m2 = Math.abs(y-frame) % l; + return x == m1 || + x == m2 || + x/2 == m1 + l/2 || + x/2 == m2 + l/2 || + x == m1 + 3*l || + x == m2 + 3*l; +} + +const br = document.getElementById("braille"); +let frame = HEIGHT; +const interval = setInterval(() => { + br.innerHTML = renderFunction(board, fun, frame++); +}, 50); @@ -7,34 +7,38 @@ <title>lambda.cx home</title> <style> body { - background: black; - font-family: monospace; + background: black; + color: white; + font-family: monospace; + } + #braille { + line-height: .92; } .bigguy { - display: flex; + display: flex; } .lambda { - font-family: Andale Mono, monospace; - font-size: 12px; - display: inline-block; + font-family: Andale Mono, monospace; + font-size: 12px; + display: inline-block; } .linkbox { - display: flex; - align-items: center; - justify-content: center; - flex: 1; + display: flex; + align-items: center; + justify-content: center; + flex: 1; } .links { - font-size: 16px; - display: inline-block; + font-size: 16px; + display: inline-block; } .links > span { color: white; } @media only screen and (max-width: 440px) { - .bigguy { - display: block; - } + .bigguy { + display: block; + } } </style> </head> @@ -42,12 +46,14 @@ <div class="bigguy"> <pre class="lambda"></pre> <div class="linkbox"> + <pre id="braille"></pre> <div class="links"> <span>==> </span><a href="https://blog.lambda.cx">blog</a><br/> <span>==> </span><a href="https://github.com/dantecatalfamo">github</a> </div> </div> </div> - <script src="script.js"></script> + <script src="lambda.js"></script> + <script src="braille.js"></script> </body> </html> |