Fixed 267U.pre2

2026-07-26 18:25:37 +09:00
parent 50bfaeafdf
commit 317d00a284
1286 changed files with 80222 additions and 1 deletions
@@ -0,0 +1,199 @@
+/**
+ * Identicon generator
+ * https://en.wikipedia.org/wiki/Identicon
+ */ import * as p from "pureimage";
+import gen from "random-seed";
+const size = 128; // px
+const n = 5; // resolution
+const margin = size / 4;
+const colors = [
+    [
+        "#eb6f92",
+        "#b4637a"
+    ],
+    [
+        "#f6c177",
+        "#ea9d34"
+    ],
+    [
+        "#ebbcba",
+        "#d7827e"
+    ],
+    [
+        "#9ccfd8",
+        "#56949f"
+    ],
+    [
+        "#c4a7e7",
+        "#907aa9"
+    ],
+    [
+        "#eb6f92",
+        "#f6c177"
+    ],
+    [
+        "#eb6f92",
+        "#ebbcba"
+    ],
+    [
+        "#eb6f92",
+        "#31748f"
+    ],
+    [
+        "#eb6f92",
+        "#9ccfd8"
+    ],
+    [
+        "#eb6f92",
+        "#c4a7e7"
+    ],
+    [
+        "#f6c177",
+        "#eb6f92"
+    ],
+    [
+        "#f6c177",
+        "#ebbcba"
+    ],
+    [
+        "#f6c177",
+        "#31748f"
+    ],
+    [
+        "#f6c177",
+        "#9ccfd8"
+    ],
+    [
+        "#f6c177",
+        "#c4a7e7"
+    ],
+    [
+        "#ebbcba",
+        "#eb6f92"
+    ],
+    [
+        "#ebbcba",
+        "#f6c177"
+    ],
+    [
+        "#ebbcba",
+        "#31748f"
+    ],
+    [
+        "#ebbcba",
+        "#9ccfd8"
+    ],
+    [
+        "#ebbcba",
+        "#c4a7e7"
+    ],
+    [
+        "#31748f",
+        "#eb6f92"
+    ],
+    [
+        "#31748f",
+        "#f6c177"
+    ],
+    [
+        "#31748f",
+        "#ebbcba"
+    ],
+    [
+        "#31748f",
+        "#9ccfd8"
+    ],
+    [
+        "#31748f",
+        "#c4a7e7"
+    ],
+    [
+        "#9ccfd8",
+        "#eb6f92"
+    ],
+    [
+        "#9ccfd8",
+        "#f6c177"
+    ],
+    [
+        "#9ccfd8",
+        "#ebbcba"
+    ],
+    [
+        "#9ccfd8",
+        "#31748f"
+    ],
+    [
+        "#9ccfd8",
+        "#c4a7e7"
+    ],
+    [
+        "#c4a7e7",
+        "#eb6f92"
+    ],
+    [
+        "#c4a7e7",
+        "#f6c177"
+    ],
+    [
+        "#c4a7e7",
+        "#ebbcba"
+    ],
+    [
+        "#c4a7e7",
+        "#31748f"
+    ],
+    [
+        "#c4a7e7",
+        "#9ccfd8"
+    ]
+];
+const actualSize = size - margin * 2;
+const cellSize = actualSize / n;
+const sideN = Math.floor(n / 2);
+/**
+ * Generate buffer of an identicon by seed
+ */ export function genIdenticon(seed, stream) {
+    const rand = gen.create(seed);
+    const canvas = p.make(size, size, undefined);
+    const ctx = canvas.getContext("2d");
+    const bgColors = colors[rand(colors.length)];
+    const bg = ctx.createLinearGradient(0, 0, size, size);
+    bg.addColorStop(0, bgColors[0]);
+    bg.addColorStop(1, bgColors[1]);
+    ctx.fillStyle = bg;
+    ctx.beginPath();
+    ctx.fillRect(0, 0, size, size);
+    ctx.fillStyle = "#ffffff";
+    // side bitmap (filled by false)
+    const side = new Array(sideN);
+    for(let i = 0; i < side.length; i++){
+        side[i] = new Array(n).fill(false);
+    }
+    // 1*n (filled by false)
+    const center = new Array(n).fill(false);
+    for(let x = 0; x < side.length; x++){
+        for(let y = 0; y < side[x].length; y++){
+            side[x][y] = rand(3) === 0;
+        }
+    }
+    for(let i = 0; i < center.length; i++){
+        center[i] = rand(3) === 0;
+    }
+    // Draw
+    for(let x = 0; x < n; x++){
+        for(let y = 0; y < n; y++){
+            const isXCenter = x === (n - 1) / 2;
+            if (isXCenter && !center[y]) continue;
+            const isLeftSide = x < (n - 1) / 2;
+            if (isLeftSide && !side[x][y]) continue;
+            const isRightSide = x > (n - 1) / 2;
+            if (isRightSide && !side[sideN - (x - sideN)][y]) continue;
+            const actualX = margin + cellSize * x;
+            const actualY = margin + cellSize * y;
+            ctx.beginPath();
+            ctx.fillRect(actualX, actualY, cellSize, cellSize);
+        }
+    }
+    return p.encodePNGToStream(canvas, stream);
+}