mirror of
https://github.com/osmarks/random-stuff
synced 2024-12-26 18:10:34 +00:00
104 lines
3.4 KiB
HTML
104 lines
3.4 KiB
HTML
<!DOCTYPE html>
|
|
<canvas id="canv"></canvas>
|
|
<input type="file" id="file">
|
|
<button id="step">Step</button>
|
|
<div id="out"></div>
|
|
<script>
|
|
const write = line => {
|
|
const out = document.querySelector("#out")
|
|
out.appendChild(document.createTextNode(line))
|
|
out.appendChild(document.createElement("br"))
|
|
}
|
|
|
|
const PX = 16
|
|
const W = 16
|
|
const RANGE = 10
|
|
const ctx = document.querySelector("canvas").getContext("2d")
|
|
ctx.canvas.width = PX * W
|
|
ctx.canvas.height = PX * W
|
|
|
|
let grid = Array(W * W).fill(null).map(x => ({ value: null, options: new Set(Array(RANGE).fill(null).map((_, ix) => ix)) }))
|
|
const map = ([x, y]) => x + y * W
|
|
const unmap = a => [a % W, Math.floor(a / W)]
|
|
const vsum = ([a, b], [c, d]) => [a + c, b + d]
|
|
const adj = [[0, 1], [0, -1], [1, 0], [-1, 0]]
|
|
const inRange = p => p >= 0 && p < grid.length
|
|
const modclamp = x => x < 0 ? 10 + x : x % 10
|
|
|
|
const updatePos = (pos, value) => {
|
|
grid[map(pos)].value = value
|
|
console.log(value)
|
|
grid[map(pos)].options = null
|
|
for (const a of adj) {
|
|
const n = map(vsum(a, pos))
|
|
if (inRange(n) && grid[n].value === null) {
|
|
for (const offset of [-1, 0, 1, 2, -2, 3, -3]) {
|
|
grid[n].options.delete(modclamp(offset + value))
|
|
}
|
|
}
|
|
}
|
|
}
|
|
const findBestCandidates = grid => grid.reduce(([bestQty, bestPos], val, index) => {
|
|
if (val.value !== null) {
|
|
return [bestQty, bestPos]
|
|
}
|
|
if (val.options.size < bestQty) {
|
|
return [val.options.size, [unmap(index)]]
|
|
}
|
|
if (val.options.size == bestQty) {
|
|
bestPos.push(unmap(index))
|
|
}
|
|
return [bestQty, bestPos]
|
|
}, [RANGE, []])
|
|
const render = grid => {
|
|
for (let x = 0; x < W; x++) {
|
|
for (let y = 0; y < W; y++) {
|
|
const data = grid[map([x, y])]
|
|
const level = data.options && Math.floor(data.options.size / RANGE * 255).toString(16).padStart(2, "0")
|
|
ctx.fillStyle = data.value !== null ? `#0000${Math.floor(data.value / RANGE * 255).toString(16).padStart(2, "0")}` : `#${level}${level}${level}`
|
|
ctx.fillRect(x * PX, y * PX, PX, PX)
|
|
}
|
|
}
|
|
}
|
|
|
|
const pick = arr => arr[Math.floor(Math.random() * arr.length)]
|
|
|
|
render(grid)
|
|
|
|
step.onclick = () => {
|
|
const [qty, pos] = findBestCandidates(grid)
|
|
if (qty === 0) {
|
|
write("contradiction")
|
|
return
|
|
}
|
|
write(`${qty} options on ${pos.length} tiles`)
|
|
if (qty === 1) {
|
|
write("resolving")
|
|
for (const p of pos) {
|
|
const newValue = Array.from(grid[map(p)].options)[0]
|
|
console.log(newValue)
|
|
updatePos(p, newValue)
|
|
}
|
|
} else {
|
|
const p = pick(pos)
|
|
console.log(p, map(p), grid[map(p)])
|
|
const newValue = pick(Array.from(grid[map(p)].options))
|
|
console.log(newValue)
|
|
updatePos(p, newValue)
|
|
}
|
|
render(grid)
|
|
}
|
|
|
|
window.file.oninput = ev => {
|
|
const file = e.target.files[0]
|
|
const url = URL.createObjectURL(file)
|
|
const img = new Image()
|
|
|
|
img.onload = function() {
|
|
URL.revokeObjectURL(img.src)
|
|
c.getContext("2d").drawImage(img, 0, 0)
|
|
}
|
|
|
|
img.src = url
|
|
}
|
|
</script> |