Bitmap display

"use client";
 
import { useEffect, useRef, useState } from "react";
 
import {
  Select,
  SelectContent,
  SelectItem,
  SelectTrigger,
  SelectValue,
} from "@/components/ui/select";
import { playClick } from "@/lib/click";
 
import { animations } from "./bitmap-animations";
import type { DrawAnimation } from "./bitmap-animations/types";
 
const DISPLAY_SIZE = 768;
const RESOLUTIONS = [32, 64, 128] as const;
type Resolution = (typeof RESOLUTIONS)[number];
 
const GRAIN = `url("data:image/svg+xml,${encodeURIComponent(
  `<svg xmlns="http://www.w3.org/2000/svg" width="180" height="180"><filter id="n"><feTurbulence type="fractalNoise" baseFrequency="0.7" numOctaves="3" stitchTiles="stitch"/></filter><rect width="100%" height="100%" filter="url(#n)"/></svg>`,
)}")`;
 
type Finish = {
  name: string;
  swatch: string;
  lit: string;
  mid: string;
  body: string;
  deep: string;
  base: string;
  wellTop: string;
  wellBottom: string;
  key: [string, string, string];
  menu: string;
};
 
const FINISHES: Finish[] = [
  { name: "Black", swatch: "#2a2a2a", lit: "#6e6e6e", mid: "#3c3c3c", body: "#2a2a2a", deep: "#1c1c1c", base: "#121212", wellTop: "#050505", wellBottom: "#242424", key: ["#4a4a4a", "#2e2e2e", "#1a1a1a"], menu: "#1a1a1a" },
  { name: "Orange", swatch: "#ff4c1a", lit: "#ff8a52", mid: "#ff4e1c", body: "#e83a12", deep: "#c42c0c", base: "#8e220c", wellTop: "#120806", wellBottom: "#4a1c12", key: ["#ff5a2a", "#d63612", "#9a240c"], menu: "#3a140e" },
  { name: "Blue", swatch: "#4e6c84", lit: "#7b94a6", mid: "#4e6c84", body: "#34556c", deep: "#243e54", base: "#183044", wellTop: "#060d14", wellBottom: "#1b3144", key: ["#45627a", "#2a455c", "#1a3348"], menu: "#152a3c" },
  { name: "Green", swatch: "#3f7a56", lit: "#8aab96", mid: "#4f7a5e", body: "#365844", deep: "#243c2e", base: "#18281e", wellTop: "#07110c", wellBottom: "#1c3326", key: ["#4d735c", "#2c4a38", "#1a3024"], menu: "#1a2e24" },
  { name: "Red", swatch: "#a33b3b", lit: "#c48a8a", mid: "#8a4545", body: "#6a3030", deep: "#4a2020", base: "#341616", wellTop: "#120808", wellBottom: "#3a1c1c", key: ["#8a4545", "#5c2c2c", "#3a1a1a"], menu: "#2e1818" },
];
 
const DEFAULT_FINISH = FINISHES[0];
 
const SHELL_SHADOW = [
  "inset 0 1px 0 rgba(255,255,255,0.55)",
  "inset 0 -3px 6px rgba(0,0,0,0.42)",
  "0 1px 0 rgba(0,0,0,0.45)",
  "0 22px 40px rgba(0,0,0,0.42)",
  "0 4px 10px rgba(0,0,0,0.28)",
].join(", ");
 
function shellPaint(finish: Finish) {
  return {
    backgroundColor: finish.base,
    backgroundImage: `linear-gradient(180deg, rgba(255,255,255,0.16), transparent 14%), linear-gradient(165deg, ${finish.lit} 0%, ${finish.mid} 7%, ${finish.body} 20%, ${finish.deep} 52%, ${finish.base} 100%)`,
    boxShadow: SHELL_SHADOW,
  };
}
 
function wellPaint(finish: Finish) {
  return {
    background: `linear-gradient(180deg, ${finish.wellTop} 0%, ${finish.wellBottom} 100%)`,
    boxShadow:
      "inset 0 8px 14px rgba(0,0,0,0.75), inset 0 -1px 0 rgba(255,255,255,0.2), 0 1px 0 rgba(255,255,255,0.08)",
  };
}
 
function keyPaint(finish: Finish) {
  return {
    backgroundImage: `linear-gradient(180deg, ${finish.key[0]} 0%, ${finish.key[1]} 42%, ${finish.key[2]} 100%)`,
  };
}
 
const keyClass =
  "h-9 w-full rounded-md border border-black/40 px-2.5 font-mono text-[11px] text-white shadow-[inset_0_1px_0_rgba(255,255,255,0.32),inset_0_-2px_4px_rgba(0,0,0,0.45),0_1px_2px_rgba(0,0,0,0.4)] transition-[transform,box-shadow,filter] duration-150 ease-out hover:brightness-110 [&_svg]:text-white/70 focus-visible:border-white/40 focus-visible:ring-white/30 active:translate-y-px active:scale-[0.99] motion-reduce:transition-none";
 
const menuItemClass =
  "focus:bg-white/12 focus:text-white! data-highlighted:bg-white/12 data-highlighted:text-white! focus:**:text-white!";
 
export function BitmapDevice({ preview = false }: { preview?: boolean }) {
  const canvasRef = useRef<HTMLCanvasElement>(null);
  const [scene, setScene] = useState(animations[0].id);
  const [resolution, setResolution] = useState<Resolution>(64);
  const [shape, setShape] = useState<"round" | "square">("round");
  const [finishName, setFinishName] = useState(DEFAULT_FINISH.name);
  const [error, setError] = useState<string | null>(null);
  const selected = animations.find((item) => item.id === scene) ?? animations[0];
  const finish = FINISHES.find((item) => item.name === finishName) ?? DEFAULT_FINISH;
 
  useEffect(() => {
    const canvas = canvasRef.current;
    const context = canvas?.getContext("2d");
    if (!context) return;
 
    const bitmap = document.createElement("canvas");
    bitmap.width = bitmap.height = resolution;
    const bitmapContext = bitmap.getContext("2d");
    if (!bitmapContext) return;
 
    const cell = DISPLAY_SIZE / resolution;
    const mask = document.createElement("canvas");
    mask.width = mask.height = cell;
    const maskContext = mask.getContext("2d");
    if (!maskContext) return;
    maskContext.fillStyle = "#fff";
    if (shape === "round") {
      maskContext.beginPath();
      maskContext.arc(cell / 2, cell / 2, cell * 0.42, 0, Math.PI * 2);
      maskContext.fill();
    } else {
      maskContext.fillRect(cell * 0.07, cell * 0.07, cell * 0.86, cell * 0.86);
    }
    const pattern = context.createPattern(mask, "repeat");
 
    let active = true;
    let request = 0;
    let started = 0;
    let previous = -1;
    let render: DrawAnimation | null = null;
    const motion = window.matchMedia("(prefers-reduced-motion: reduce)");
 
    const paint = (frame: number) => {
      if (!render) return;
      bitmapContext.clearRect(0, 0, resolution, resolution);
      render(bitmapContext, resolution, frame);
      context.clearRect(0, 0, DISPLAY_SIZE, DISPLAY_SIZE);
      context.imageSmoothingEnabled = false;
      context.drawImage(bitmap, 0, 0, DISPLAY_SIZE, DISPLAY_SIZE);
      if (pattern) {
        context.globalCompositeOperation = "destination-in";
        context.fillStyle = pattern;
        context.fillRect(0, 0, DISPLAY_SIZE, DISPLAY_SIZE);
        context.globalCompositeOperation = "source-over";
      }
    };
    const tick = (now: number) => {
      if (!started) started = now;
      const frame = Math.floor((now - started) / 85);
      if (frame !== previous) {
        paint(frame);
        previous = frame;
      }
      request = requestAnimationFrame(tick);
    };
    const syncMotion = () => {
      cancelAnimationFrame(request);
      started = 0;
      previous = -1;
      if (!render) return;
      if (preview || motion.matches) paint(0);
      else request = requestAnimationFrame(tick);
    };
 
    motion.addEventListener("change", syncMotion);
    selected.load().then((draw) => {
      if (!active) return;
      render = draw;
      syncMotion();
    }).catch(() => {
      if (active) setError("This animation could not load.");
    });
 
    return () => {
      active = false;
      cancelAnimationFrame(request);
      motion.removeEventListener("change", syncMotion);
    };
  }, [selected, resolution, shape, preview]);
 
  return (
    <div className="mx-auto flex w-full max-w-2xl flex-col items-center justify-center gap-4 sm:flex-row sm:gap-5">
      <div className="relative min-w-0 w-full max-w-[600px]">
        <div
          className="relative isolate overflow-hidden rounded-[12px] border border-black/70 p-[11px] text-white sm:p-[15px]"
          style={shellPaint(finish)}
        >
          <div
            aria-hidden="true"
            className="pointer-events-none absolute inset-0 opacity-80 mix-blend-overlay"
            style={{ backgroundImage: GRAIN, backgroundSize: "180px 180px" }}
          />
 
          <div className="relative">
            <div style={wellPaint(finish)} className="rounded-[3px] p-[3px]">
              <div className="overflow-hidden rounded-[2px] border border-black/70 bg-black">
                <canvas
                  ref={canvasRef}
                  width={DISPLAY_SIZE}
                  height={DISPLAY_SIZE}
                  role="img"
                  aria-label={`${selected.label} animation on a ${resolution} by ${resolution} LED display with ${shape} pixels`}
                  className="block aspect-square w-full"
                />
              </div>
            </div>
 
            {!preview && (
              <div className="relative mt-3 grid gap-2 px-0.5 pb-0.5">
                <div className="grid gap-2 sm:grid-cols-3">
                  <div className="grid min-w-0 gap-1.5">
                    <span className="font-mono text-[10px] uppercase tracking-wider text-white/50">Animation</span>
                    <Select
                      value={scene}
                      onValueChange={(value) => {
                        if (value === null) return;
                        setScene(value);
                        setError(null);
                      }}
                    >
                      <SelectTrigger aria-label="Animation" style={keyPaint(finish)} className={keyClass}>
                        <SelectValue />
                      </SelectTrigger>
                      <SelectContent style={{ backgroundColor: finish.menu }} className="border border-white/15 text-white ring-white/15">
                        {animations.map((item) => (
                          <SelectItem key={item.id} value={item.id} className={menuItemClass}>
                            {item.label}
                          </SelectItem>
                        ))}
                      </SelectContent>
                    </Select>
                  </div>
 
                  <div className="grid min-w-0 gap-1.5">
                    <span className="font-mono text-[10px] uppercase tracking-wider text-white/50">Resolution</span>
                    <Select
                      value={String(resolution)}
                      onValueChange={(value) => {
                        if (value !== null) setResolution(Number(value) as Resolution);
                      }}
                    >
                      <SelectTrigger aria-label="Resolution" style={keyPaint(finish)} className={keyClass}>
                        <SelectValue />
                      </SelectTrigger>
                      <SelectContent style={{ backgroundColor: finish.menu }} className="border border-white/15 text-white ring-white/15">
                        {RESOLUTIONS.map((value) => (
                          <SelectItem key={value} value={String(value)} className={menuItemClass}>
                            {value} × {value}
                          </SelectItem>
                        ))}
                      </SelectContent>
                    </Select>
                  </div>
 
                  <div className="grid min-w-0 gap-1.5">
                    <span className="font-mono text-[10px] uppercase tracking-wider text-white/50">Pixel shape</span>
                    <Select
                      value={shape}
                      onValueChange={(value) => {
                        if (value === "round" || value === "square") setShape(value);
                      }}
                    >
                      <SelectTrigger aria-label="Pixel shape" style={keyPaint(finish)} className={keyClass}>
                        <SelectValue />
                      </SelectTrigger>
                      <SelectContent style={{ backgroundColor: finish.menu }} className="border border-white/15 text-white ring-white/15">
                        <SelectItem value="round" className={menuItemClass}>Round</SelectItem>
                        <SelectItem value="square" className={menuItemClass}>Square</SelectItem>
                      </SelectContent>
                    </Select>
                  </div>
                </div>
 
                {error && (
                  <p role="alert" className="font-mono text-xs text-red-300">
                    {error}
                  </p>
                )}
              </div>
            )}
          </div>
        </div>
      </div>
 
      {!preview && (
        <div role="radiogroup" aria-label="Device color" className="flex shrink-0 flex-row gap-3 sm:flex-col">
          {FINISHES.map((item) => {
            const active = item.name === finish.name;
            return (
              <button
                key={item.name}
                type="button"
                role="radio"
                aria-checked={active}
                aria-label={item.name}
                onClick={() => {
                  playClick();
                  setFinishName(item.name);
                }}
                style={{ backgroundColor: item.swatch }}
                className={`size-4 rounded-full border border-white/30 shadow-[inset_0_1px_1px_rgba(255,255,255,0.45),inset_0_-1px_2px_rgba(0,0,0,0.4)] outline-none transition-transform duration-150 ease-out hover:scale-110 focus-visible:ring-2 focus-visible:ring-white motion-reduce:transition-none ${
                  active ? "scale-110 ring-2 ring-white ring-offset-2 ring-offset-(--craft-page)" : ""
                }`}
              />
            );
          })}
        </div>
      )}
    </div>
  );
}
 

export type DrawAnimation = (
  context: CanvasRenderingContext2D,
  size: number,
  frame: number,
) => void;

import type { DrawAnimation } from "./types";
 
export const animations: {
  id: string;
  label: string;
  load: () => Promise<DrawAnimation>;
}[] = [
  {
    id: "rocket",
    label: "Rocket launch",
    load: async () => (await import("./rocket")).drawRocket,
  },
  {
    id: "matrix",
    label: "Matrix rain",
    load: async () => (await import("./matrix")).drawMatrix,
  },
  {
    id: "starfield",
    label: "Starfield",
    load: async () => (await import("./starfield")).drawStarfield,
  },
  {
    id: "equalizer",
    label: "Equalizer",
    load: async () => (await import("./equalizer")).drawEqualizer,
  },
  {
    id: "fire",
    label: "Fire",
    load: async () => (await import("./fire")).drawFire,
  },
];

import type { DrawAnimation } from "./types";
 
export const drawRocket: DrawAnimation = (context, size, frame) => {
  const tick = frame % 96;
  const lift = tick < 10 ? 0 : Math.round((Math.min(tick - 10, 65) / 65) ** 1.35 * 96);
  const launched = tick >= 10;
 
  context.save();
  context.scale(size / 64, size / 64);
 
  const sky = context.createLinearGradient(0, 0, 0, 64);
  sky.addColorStop(0, "#071226");
  sky.addColorStop(1, "#174568");
  context.fillStyle = sky;
  context.fillRect(0, 0, 64, 64);
 
  for (let i = 0; i < 30; i++) {
    const x = (i * 23 + 7) % 64;
    const y = (i * 17 + 5) % 43;
    context.fillStyle = (i + Math.floor(frame / 6)) % 5 === 0 ? "#ffffff" : "#7599b6";
    context.fillRect(x, y, 1, 1);
  }
 
  context.fillStyle = "#14273d";
  context.fillRect(0, 54, 64, 10);
  context.fillStyle = "#354a5b";
  context.fillRect(0, 54, 64, 2);
  context.fillStyle = "#607b8a";
  context.fillRect(23, 52, 18, 3);
  context.fillStyle = "#253c51";
  context.fillRect(8, 29, 2, 25);
  for (let y = 31; y < 52; y += 5) context.fillRect(8, y, 9, 1);
 
  if (launched && tick < 85) {
    const spread = Math.min(18, Math.floor((tick - 10) / 3));
    for (let i = 0; i < 7; i++) {
      const x = 32 + (i - 3) * spread * 0.65;
      const y = 55 + ((i * 3 + frame) % 5);
      context.fillStyle = i % 2 ? "#b9c9c9" : "#e0e6db";
      context.beginPath();
      context.arc(x, y, 3 + (i % 3), 0, Math.PI * 2);
      context.fill();
    }
  }
 
  if (tick <= 75) {
    context.save();
    context.translate(32, 43 - lift);
 
    if (launched) {
      const flame = 10 + (frame % 3) * 2;
      context.fillStyle = "#f05a31";
      context.beginPath();
      context.moveTo(-4, 8);
      context.lineTo(0, 8 + flame);
      context.lineTo(4, 8);
      context.fill();
      context.fillStyle = "#ffe371";
      context.beginPath();
      context.moveTo(-2, 8);
      context.lineTo(0, 5 + flame);
      context.lineTo(2, 8);
      context.fill();
    }
 
    context.fillStyle = "#071b2d";
    context.fillRect(-6, -17, 12, 25);
    context.fillStyle = "#e8eee8";
    context.fillRect(-5, -17, 10, 23);
    context.fillStyle = "#b9d0d5";
    context.fillRect(2, -16, 3, 20);
    context.fillStyle = "#f35b48";
    context.beginPath();
    context.moveTo(-5, -17);
    context.lineTo(0, -27);
    context.lineTo(5, -17);
    context.fill();
    context.fillStyle = "#f35b48";
    context.beginPath();
    context.moveTo(-5, -2);
    context.lineTo(-10, 8);
    context.lineTo(-5, 6);
    context.moveTo(5, -2);
    context.lineTo(10, 8);
    context.lineTo(5, 6);
    context.fill();
    context.fillStyle = "#173b58";
    context.beginPath();
    context.arc(0, -10, 4, 0, Math.PI * 2);
    context.fill();
    context.fillStyle = "#64d5e6";
    context.beginPath();
    context.arc(-1, -11, 2, 0, Math.PI * 2);
    context.fill();
    context.fillStyle = "#f35b48";
    context.fillRect(-5, 2, 10, 2);
    context.restore();
  }
 
  context.restore();
};

import type { DrawAnimation } from "./types";
 
const GLYPHS = [
  ["111", "101", "101", "101", "111"],
  ["010", "110", "010", "010", "111"],
  ["110", "001", "010", "100", "111"],
  ["111", "001", "011", "001", "111"],
  ["010", "101", "111", "101", "101"],
  ["110", "101", "110", "101", "110"],
  ["101", "101", "010", "101", "101"],
  ["010", "010", "111", "010", "010"],
];
 
export const drawMatrix: DrawAnimation = (context, size, frame) => {
  context.fillStyle = "#020907";
  context.fillRect(0, 0, size, size);
 
  const columns = Math.ceil(size / 5);
  for (let col = 0; col < columns; col++) {
    const speed = 1 + (col % 3);
    const head = (frame * speed + col * 19) % (size + 90) - 45;
    const length = 6 + (col % 6);
 
    for (let tail = 0; tail < length; tail++) {
      const y = head - tail * 7;
      if (y < -5 || y >= size) continue;
      const glyph = GLYPHS[(col * 11 + tail * 7 + Math.floor(frame / 5)) % GLYPHS.length];
      context.fillStyle = tail === 0 ? "#d9ffe5" : tail < 3 ? "#56f995" : tail < 6 ? "#18944e" : "#0c472b";
      for (let row = 0; row < 5; row++) {
        for (let bit = 0; bit < 3; bit++) {
          if (glyph[row][bit] === "1") context.fillRect(col * 5 + bit, y + row, 1, 1);
        }
      }
    }
  }
};

import type { DrawAnimation } from "./types";
 
export const drawStarfield: DrawAnimation = (context, size, frame) => {
  context.fillStyle = "#03060f";
  context.fillRect(0, 0, size, size);
 
  const count = Math.max(28, Math.floor(size * 1.1));
  const cx = size / 2;
  const cy = size / 2;
 
  for (let i = 0; i < count; i++) {
    const angle = ((i * 47) % 360) * (Math.PI / 180);
    const seed = ((i * 97) % 1000) / 1000;
    const travel = ((frame * (0.8 + seed * 2.4) + seed * size * 2) % (size * 0.95)) / (size * 0.95);
    const radius = 1 + travel * travel * (size * 0.72);
    const x = Math.round(cx + Math.cos(angle) * radius);
    const y = Math.round(cy + Math.sin(angle) * radius);
    if (x < 0 || y < 0 || x >= size || y >= size) continue;
 
    const bright = travel > 0.75;
    const mid = travel > 0.4;
    context.fillStyle = bright ? "#ffffff" : mid ? "#9eb6ff" : "#3d4f7a";
    const streak = bright ? 2 + Math.floor(travel * 3) : 1;
    context.fillRect(x, y, streak, 1);
    if (bright) context.fillRect(x, y, 1, 1);
  }
 
  context.fillStyle = "#12182a";
  context.fillRect(Math.round(cx) - 1, Math.round(cy) - 1, 3, 3);
  context.fillStyle = "#6b7a9e";
  context.fillRect(Math.round(cx), Math.round(cy), 1, 1);
};

import type { DrawAnimation } from "./types";
 
export const drawEqualizer: DrawAnimation = (context, size, frame) => {
  const sky = context.createLinearGradient(0, 0, 0, size);
  sky.addColorStop(0, "#0a1020");
  sky.addColorStop(1, "#121828");
  context.fillStyle = sky;
  context.fillRect(0, 0, size, size);
 
  const bars = Math.max(8, Math.floor(size / 4));
  const gap = Math.max(1, Math.floor(size / 64));
  const width = Math.max(2, Math.floor((size - gap * (bars + 1)) / bars));
  const floor = size - Math.max(2, Math.floor(size * 0.08));
 
  for (let i = 0; i < bars; i++) {
    const wave =
      0.35 +
      0.35 * Math.sin(frame * 0.18 + i * 0.7) +
      0.25 * Math.sin(frame * 0.31 + i * 1.3) +
      0.15 * Math.sin(frame * 0.09 + i);
    const height = Math.max(2, Math.round(wave * (floor - 4)));
    const x = gap + i * (width + gap);
    const y = floor - height;
 
    for (let row = 0; row < height; row++) {
      const t = row / height;
      context.fillStyle =
        t > 0.82 ? "#ffe08a" : t > 0.55 ? "#5ce1a2" : t > 0.28 ? "#2f9eef" : "#3155d9";
      context.fillRect(x, y + row, width, 1);
    }
 
    context.fillStyle = "#d7e0ea";
    context.fillRect(x, y, width, 1);
  }
 
  context.fillStyle = "#1c2436";
  context.fillRect(0, floor, size, size - floor);
  context.fillStyle = "#3a455c";
  context.fillRect(0, floor, size, 1);
};

import type { DrawAnimation } from "./types";
 
export const drawFire: DrawAnimation = (context, size, frame) => {
  context.fillStyle = "#080604";
  context.fillRect(0, 0, size, size);
 
  const cols = size;
  for (let x = 0; x < cols; x++) {
    const edge = 1 - Math.abs(x / (size - 1) - 0.5) * 1.7;
    const flicker =
      0.55 +
      0.25 * Math.sin(frame * 0.35 + x * 0.4) +
      0.2 * Math.sin(frame * 0.17 + x * 0.9);
    const height = Math.max(2, Math.round(edge * flicker * size * 0.78));
 
    for (let row = 0; row < height; row++) {
      const y = size - 1 - row;
      const t = row / height;
      const wobble = Math.sin(frame * 0.4 + x * 0.55 + row * 0.2) * (1 - t) * 1.2;
      const px = Math.round(x + wobble);
      if (px < 0 || px >= size) continue;
 
      context.fillStyle =
        t > 0.78
          ? "#fff4c2"
          : t > 0.55
            ? "#ffb347"
            : t > 0.32
              ? "#ff6a2b"
              : t > 0.14
                ? "#d1341b"
                : "#6a1a12";
      context.fillRect(px, y, 1, 1);
    }
  }
 
  context.fillStyle = "#1a120c";
  context.fillRect(0, size - Math.max(2, Math.floor(size * 0.06)), size, size);
  for (let i = 0; i < Math.floor(size / 3); i++) {
    const x = (i * 13 + frame) % size;
    const y = size - 2 - ((i * 5 + Math.floor(frame / 2)) % 4);
    context.fillStyle = i % 2 ? "#3a2a1c" : "#2a1c12";
    context.fillRect(x, y, 2, 1);
  }
};