Each glyph column from the shared bitmap font is subdivided into configurable sub-rows, then span-detected horizontally so continuous runs of filled cells become a single brick. A running-bond stagger offsets alternate sub-rows by half a cell width, and mortar gaps are enforced by insetting each brick's left and right edges. Corner radius and per-brick randomised radius variation (seeded PRNG) let it range from a clean pixel grid to a rough masonry wall. The whole thing is pure SVG rects -- no canvas, no WebGL.
Source
"use client";
import { useMemo, useState, useCallback, useEffect, useRef } from "react";
import { useSearchParams } from "next/navigation";
import { motion } from "framer-motion";
import ScrambleLink from "../ScrambleLink";
import DraggablePanel from "../DraggablePanel";
import exportBricksFont from "./exportBricksFont";
import { FONT, ROWS, SPACE_COLS, LETTER_GAP_COLS } from "../alphabet";
const VB = 1000;
function srand(seed: number): number {
const s = Math.sin(seed * 127.1 + 311.7) * 43758.5453;
return s - Math.floor(s);
}
interface Composition {
name: string;
text: string;
bg: string;
brickColor: string;
uiColor: "light" | "dark";
cellW: number;
mortar: number;
brickH: number;
subRows: number;
cornerRadius: number;
stagger: number;
vary: number;
}
const compositions: Composition[] = [
{
name: "GIRAGIRA",
text: "GIRAGIRA",
bg: "#f0eeeb",
brickColor: "#0a1a6b",
uiColor: "dark",
cellW: 22,
mortar: 3,
brickH: 9,
subRows: 3,
cornerRadius: 0,
stagger: 0,
vary: 0,
},
{
name: "BRICKS",
text: "BRICKS",
bg: "#f5ede0",
brickColor: "#b5432a",
uiColor: "dark",
cellW: 28,
mortar: 3.5,
brickH: 7.5,
subRows: 4,
cornerRadius: 3,
stagger: 0.5,
vary: 1,
},
{
name: "GIRAGIRA LAB",
text: "GIRAGIRA LAB",
bg: "#e8e6e2",
brickColor: "#2a2a2a",
uiColor: "dark",
cellW: 14,
mortar: 2,
brickH: 10,
subRows: 2,
cornerRadius: 0,
stagger: 0,
vary: 0,
},
{
name: "GIRAGIRA / NIGHT",
text: "GIRAGIRA",
bg: "#0e0e10",
brickColor: "#f0eeeb",
uiColor: "light",
cellW: 22,
mortar: 3,
brickH: 9,
subRows: 3,
cornerRadius: 0,
stagger: 0,
vary: 0,
},
{
name: "A — R",
text: "ABCDEFGHI\nJKLMNOPQR",
bg: "#f0eeeb",
brickColor: "#0a1a6b",
uiColor: "dark",
cellW: 14,
mortar: 2,
brickH: 9,
subRows: 2,
cornerRadius: 0,
stagger: 0,
vary: 0,
},
{
name: "S — Z",
text: "STUVWXYZ",
bg: "#f0eeeb",
brickColor: "#0a1a6b",
uiColor: "dark",
cellW: 14,
mortar: 2,
brickH: 9,
subRows: 2,
cornerRadius: 0,
stagger: 0,
vary: 0,
},
{
name: "a — r",
text: "abcdefghi\njklmnopqr",
bg: "#f0eeeb",
brickColor: "#0a1a6b",
uiColor: "dark",
cellW: 14,
mortar: 2,
brickH: 9,
subRows: 2,
cornerRadius: 0,
stagger: 0,
vary: 0,
},
{
name: "s — z",
text: "stuvwxyz",
bg: "#f0eeeb",
brickColor: "#0a1a6b",
uiColor: "dark",
cellW: 14,
mortar: 2,
brickH: 9,
subRows: 2,
cornerRadius: 0,
stagger: 0,
vary: 0,
},
{
name: "0123456789",
text: "0123456789\n.,!?-':;",
bg: "#f0eeeb",
brickColor: "#0a1a6b",
uiColor: "dark",
cellW: 14,
mortar: 2,
brickH: 9,
subRows: 2,
cornerRadius: 0,
stagger: 0,
vary: 0,
},
];
// ---------------------------------------------------------------------------
// Layout — span-based brick laying with running bond stagger
// ---------------------------------------------------------------------------
function lineCols(lineText: string): number {
let cols = 0;
for (let i = 0; i < lineText.length; i++) {
const ch = lineText[i];
if (ch === " ") cols += SPACE_COLS;
else {
const glyph = FONT[ch];
if (glyph) cols += glyph[0].length;
}
if (i < lineText.length - 1) cols += LETTER_GAP_COLS;
}
return cols;
}
interface Brick {
x: number;
y: number;
w: number;
h: number;
rx: number;
}
function layout(comp: Composition, vbH: number): Brick[] {
const sr = Math.max(1, Math.round(comp.subRows));
const vPitch = comp.brickH + comp.mortar;
const rowPitch = sr * vPitch;
const staggerOff = comp.stagger * comp.cellW;
const lines = comp.text.split("\n");
const lineH = ROWS * rowPitch;
const lineGap = rowPitch;
const totalH = lines.length * lineH + (lines.length - 1) * lineGap;
const baseOy = (vbH - totalH) / 2;
const bricks: Brick[] = [];
let brickIdx = 0;
for (let li = 0; li < lines.length; li++) {
const lineText = lines[li];
const totalW = lineCols(lineText) * comp.cellW;
const ox = (VB - totalW) / 2;
const oy = baseOy + li * (lineH + lineGap);
let colCursor = 0;
for (let i = 0; i < lineText.length; i++) {
const ch = lineText[i];
if (ch === " ") {
colCursor += SPACE_COLS;
if (i < lineText.length - 1) colCursor += LETTER_GAP_COLS;
continue;
}
const glyph = FONT[ch];
if (!glyph) {
colCursor += LETTER_GAP_COLS;
continue;
}
const gW = glyph[0].length;
for (let r = 0; r < ROWS; r++) {
const row = glyph[r];
let spanStart = -1;
for (let c = 0; c <= gW; c++) {
const filled = c < gW && row[c] === "#";
if (filled && spanStart < 0) spanStart = c;
if (!filled && spanStart >= 0) {
const spanLeft = ox + (colCursor + spanStart) * comp.cellW;
const spanRight = ox + (colCursor + c) * comp.cellW;
for (let s = 0; s < sr; s++) {
const globalRow = r * sr + s;
const y = oy + globalRow * vPitch;
const origin = ox + (globalRow % 2 === 1 ? staggerOff : 0);
const firstN = Math.floor((spanLeft - origin) / comp.cellW) - 1;
const lastN = Math.ceil((spanRight - origin) / comp.cellW);
for (let n = firstN; n <= lastN; n++) {
const bLeft = origin + n * comp.cellW + comp.mortar / 2;
const bRight =
origin + (n + 1) * comp.cellW - comp.mortar / 2;
const left = Math.max(bLeft, spanLeft + comp.mortar / 2);
const right = Math.min(bRight, spanRight - comp.mortar / 2);
if (right - left > 0.5) {
const rxVar =
comp.cornerRadius > 0
? comp.cornerRadius *
(1 + comp.vary * (srand(brickIdx) - 0.5) * 1.2)
: 0;
bricks.push({
x: left,
y,
w: right - left,
h: comp.brickH,
rx: rxVar,
});
brickIdx++;
}
}
}
spanStart = -1;
}
}
}
colCursor += gW;
if (i < lineText.length - 1) colCursor += LETTER_GAP_COLS;
}
}
return bricks;
}
// ---------------------------------------------------------------------------
// Component
// ---------------------------------------------------------------------------
export default function BricksCanvas() {
const searchParams = useSearchParams();
const initialIndex =
Math.abs(Number(searchParams.get("v")) || 0) % compositions.length;
const [index, setIndex] = useState(initialIndex);
const nextIndex = (index + 1) % compositions.length;
const handleClick = useCallback(() => {
setIndex(nextIndex);
window.history.replaceState(null, "", `/lab/bricks?v=${nextIndex}`);
}, [nextIndex]);
const [vbH, setVbH] = useState(VB);
const stageRef = useRef<HTMLDivElement>(null);
useEffect(() => {
const el = stageRef.current;
if (!el) return;
const update = () => {
const aspect = el.clientHeight / Math.max(1, el.clientWidth);
setVbH(Math.round(VB * aspect));
};
update();
const ro = new ResizeObserver(update);
ro.observe(el);
return () => ro.disconnect();
}, []);
const comp = compositions[index];
const isLight = comp.uiColor === "light";
const [brickH, setBrickH] = useState(comp.brickH);
const [mortar, setMortar] = useState(comp.mortar);
const [subRows, setSubRows] = useState(comp.subRows);
const [cornerRadius, setCornerRadius] = useState(comp.cornerRadius);
const [stagger, setStagger] = useState(comp.stagger);
const [vary, setVary] = useState(comp.vary);
const [previewFamily, setPreviewFamily] = useState<string | null>(null);
const [customText, setCustomText] = useState("");
const activeComp = useMemo(
() => ({
...comp,
text: customText || comp.text,
brickH,
mortar,
subRows: Math.round(subRows),
cornerRadius,
stagger,
vary,
}),
[comp, customText, brickH, mortar, subRows, cornerRadius, stagger, vary],
);
const bricks = useMemo(() => layout(activeComp, vbH), [activeComp, vbH]);
return (
<div
ref={stageRef}
className="fixed inset-0 select-none transition-colors duration-700 cursor-pointer"
style={{ backgroundColor: comp.bg }}
onClick={handleClick}
>
<svg
className="absolute inset-0 w-full h-full z-[1]"
viewBox={`0 0 ${VB} ${vbH}`}
preserveAspectRatio="xMidYMid meet"
overflow="hidden"
>
<g fill={comp.brickColor}>
{bricks.map((b, i) => (
<rect
key={i}
x={b.x}
y={b.y}
width={b.w}
height={b.h}
rx={b.rx}
ry={b.rx}
/>
))}
</g>
</svg>
{/* Composition label */}
<div
className="fixed bottom-8 left-8 pointer-events-none z-10 font-[family-name:var(--font-flux)]"
style={{ fontVariationSettings: "'wght' 300, 'SRIF' 100" }}
>
<motion.div
key={comp.name}
initial={{ opacity: 0, y: 10 }}
animate={{ opacity: 1, y: 0 }}
transition={{ duration: 0.4, delay: 0.2 }}
>
<motion.p
className="text-[12px] tracking-[0.08em] uppercase"
animate={{
color: isLight
? "rgba(255,255,255,0.5)"
: "rgba(23,23,23,0.5)",
}}
transition={{ duration: 0.6 }}
>
{comp.name}
</motion.p>
<motion.p
className="text-[12px] tracking-[0.08em] mt-1"
animate={{
color: isLight
? "rgba(255,255,255,0.3)"
: "rgba(23,23,23,0.3)",
}}
transition={{ duration: 0.6 }}
>
{index + 1} / {compositions.length}
</motion.p>
</motion.div>
</div>
<DraggablePanel
isLight={isLight}
controls={[
{
label: "Brick H",
value: brickH,
set: setBrickH,
min: 3,
max: 20,
step: 0.5,
},
{
label: "Mortar",
value: mortar,
set: setMortar,
min: 0,
max: 10,
step: 0.5,
},
{
label: "Sub-rows",
value: subRows,
set: setSubRows,
min: 1,
max: 6,
step: 1,
},
{
label: "Radius",
value: cornerRadius,
set: setCornerRadius,
min: 0,
max: 8,
step: 0.5,
},
{
label: "Stagger",
value: stagger,
set: setStagger,
min: 0,
max: 0.5,
step: 0.5,
},
{
label: "Vary",
value: vary,
set: setVary,
min: 0,
max: 1,
step: 0.05,
},
]}
>
<div style={{ marginBottom: 8 }}>
<div style={{
fontSize: 10, letterSpacing: "0.06em", textTransform: "uppercase",
color: isLight ? "rgba(255,255,255,0.5)" : "rgba(0,0,0,0.4)",
fontVariationSettings: "'wght' 300, 'SRIF' 100", marginBottom: 4,
}}>
Preview text
</div>
<textarea
value={customText}
onChange={(e) => setCustomText(e.target.value)}
placeholder={comp.text}
rows={2}
style={{
width: "100%",
padding: "6px 8px",
background: "transparent",
border: isLight
? "1px solid rgba(255,255,255,0.15)"
: "1px solid rgba(0,0,0,0.1)",
borderRadius: 6,
color: isLight ? "#fff" : "#1a1a2e",
fontSize: 12,
fontFamily: "var(--font-flux), sans-serif",
boxSizing: "border-box",
resize: "none",
}}
/>
</div>
<button
onClick={() =>
setPreviewFamily(
exportBricksFont(
comp.cellW,
brickH,
mortar,
subRows,
cornerRadius,
stagger,
vary,
),
)
}
style={{
width: "100%",
padding: "8px 0",
marginTop: 4,
borderRadius: 8,
border: isLight
? "1px solid rgba(255,255,255,0.2)"
: "1px solid rgba(0,0,0,0.1)",
background: isLight
? "rgba(255,255,255,0.1)"
: "rgba(0,0,0,0.04)",
color: isLight ? "#fff" : "#1a1a2e",
fontFamily: "var(--font-flux), sans-serif",
fontVariationSettings: "'wght' 500, 'SRIF' 100",
fontSize: 11,
letterSpacing: "0.08em",
textTransform: "uppercase",
cursor: "pointer",
}}
>
Export OTF
</button>
</DraggablePanel>
<div
className="fixed bottom-8 right-8 pointer-events-none z-10 font-[family-name:var(--font-flux)]"
style={{ fontVariationSettings: "'wght' 300, 'SRIF' 100" }}
>
<p
className="text-[12px] tracking-[0.08em] uppercase"
style={{
color: isLight
? "rgba(255,255,255,0.3)"
: "rgba(23,23,23,0.3)",
}}
>
Click anywhere
</p>
</div>
<div
className="fixed top-8 left-8 z-10"
onClick={(e) => e.stopPropagation()}
>
<ScrambleLink
from="NEMAWASHI LAB"
to="← BACK"
href="/lab"
className={`text-[14px] tracking-[0.08em] uppercase pointer-events-auto font-[family-name:var(--font-flux)] ${
isLight ? "text-white/60" : "text-foreground/60"
}`}
style={{ fontVariationSettings: "'wght' 600, 'SRIF' 400" }}
/>
</div>
{previewFamily && (
<div
className="fixed bottom-0 left-0 right-0 z-30 pointer-events-none"
style={{
background: isLight
? "rgba(0,0,0,0.85)"
: "rgba(255,255,255,0.95)",
padding: "16px 32px",
textAlign: "center",
}}
>
<p
style={{
fontFamily: `"${previewFamily}", sans-serif`,
fontSize: 32,
color: isLight ? "#fff" : "#1a1a2e",
letterSpacing: "0.05em",
}}
>
AaBbCcDd 0123456789 .,!?
</p>
</div>
)}
</div>
);
}
import { Glyph, Path } from "opentype.js";
import { UPM, createFont, downloadFont, previewFont, roundedRectToPath } from "../fontExport";
import { FONT, ROWS, SPACE_COLS } from "../alphabet";
function srand(seed: number): number {
const s = Math.sin(seed * 127.1 + 311.7) * 43758.5453;
return s - Math.floor(s);
}
export default function exportBricksFont(
cellW: number,
brickH: number,
mortar: number,
subRows: number,
cornerRadius: number,
stagger: number,
vary: number,
) {
const sr = Math.max(1, Math.round(subRows));
const vPitch = brickH + mortar;
const totalCanvasH = ROWS * sr * vPitch;
const SCALE = UPM / totalCanvasH;
const fCellW = cellW * SCALE;
const fBrickH = brickH * SCALE;
const fMortar = mortar * SCALE;
const fVPitch = fBrickH + fMortar;
const fRadius = cornerRadius * SCALE;
const fStagger = stagger * fCellW;
const otGlyphs: Glyph[] = [];
let brickIdx = 0;
for (const [char, rows] of Object.entries(FONT)) {
const code = char.charCodeAt(0);
const glyphW = rows[0].length;
const advanceWidth = glyphW * fCellW + fMortar;
const path = new Path();
for (let r = 0; r < ROWS; r++) {
const row = rows[r];
let spanStart = -1;
for (let c = 0; c <= glyphW; c++) {
const filled = c < glyphW && row[c] === "#";
if (filled && spanStart < 0) spanStart = c;
if (!filled && spanStart >= 0) {
const spanLeft = spanStart * fCellW;
const spanRight = c * fCellW;
for (let s = 0; s < sr; s++) {
const globalRow = r * sr + s;
const fontY = UPM - globalRow * fVPitch - fBrickH;
const origin = globalRow % 2 === 1 ? fStagger : 0;
const firstN = Math.floor((spanLeft - origin) / fCellW) - 1;
const lastN = Math.ceil((spanRight - origin) / fCellW);
for (let n = firstN; n <= lastN; n++) {
const bLeft = origin + n * fCellW + fMortar / 2;
const bRight = origin + (n + 1) * fCellW - fMortar / 2;
const left = Math.max(bLeft, spanLeft + fMortar / 2);
const right = Math.min(bRight, spanRight - fMortar / 2);
if (right - left > 0.5) {
const rx =
fRadius > 0
? fRadius * (1 + vary * (srand(brickIdx) - 0.5) * 1.2)
: 0;
roundedRectToPath(
path,
left,
fontY,
right - left,
fBrickH,
Math.max(0, rx),
);
brickIdx++;
}
}
}
spanStart = -1;
}
}
}
otGlyphs.push(
new Glyph({
name:
char.length === 1
? char
: `uni${code.toString(16).toUpperCase().padStart(4, "0")}`,
unicode: code,
advanceWidth,
path,
}),
);
}
otGlyphs.push(
new Glyph({
name: "space",
unicode: 32,
advanceWidth: SPACE_COLS * fCellW,
path: new Path(),
}),
);
const s = stagger > 0 ? 1 : 0;
const v = Math.round(vary * 10);
const filename = `GRGR_Bricks_h${brickH}_m${mortar}_sr${sr}_r${cornerRadius}_s${s}_v${v}.otf`;
const font = createFont("GRGR Bricks", otGlyphs);
downloadFont(font, filename);
return previewFont(font, "GRGR-Bricks-Preview");
}