bellbind

## movconcat.js
#!/usr/bin/env -S deno run --allow-read --allow-run
// usage: deno run --allow-read --allow-run movconcat.js /Volumes/UNTITLED/Normal/F/ result.mp4
import * as path from "https://deno.land/std/path/mod.ts";

const sources = Deno.args.at(-2);
const output = Deno.args.at(-1);
const inputs = [];
for await (const {name} of Deno.readDir(sources)) inputs.push(name);
inputs.sort();
const list = inputs.map(f => `file ${path.toFileUrl(path.join(sources, f))}\n`).join(``);

## spiral.html
<!doctype html>
<html>
<head>
<meta charset="utf-8" />
<script src="https://cdnjs.cloudflare.com/ajax/libs/three.js/r68/three.min.js"
></script>
<script src="https://rawgit.com/mrdoob/three.js/master/examples/js/controls/Trac
kballControls.js"
></script>
<script src="spiral.js"></script>

## index.html
<!doctype html>
<html>
  <head>
    <!-- IMPORTANT: The current Chrome requires some origin-trial token in <meta>.
         To register origins at the last "WebGPU REGISTER" in https://developer.chrome.com/origintrials/
         This token is for a Web Origin "https://gist.githack.com" (maybe expired at Mar 31, 2022)
         It can register localhost origin as "http://localhost:8000"
      -->
    <meta http-equiv="origin-trial"
          content="Akv07qcAop5MFaZYxJtHHjUuM8eV3GpbHkTeuhZo/4wsNjYnQ7GSGJyo7hRVZvpvyjYwilbJ8KbFVchI4O1DpA0AAABQeyJvcmlnaW4iOiJodHRwczovL2dpc3QuZ2l0aGFjay5jb206NDQzIiwiZmVhdHVyZSI6IldlYkdQVSIsImV4cGlyeSI6MTY1MjgzMTk5OX0=" />

## compute-example.js
// Compute example for WebGPU API for Chrome-103: https://www.w3.org/TR/webgpu/
// [Usage] Paste whole codes into Web Comsole of the WebGPU demo page, then output 1024 Float32Array of squares
const adapter = await navigator.gpu.requestAdapter();
const device = await adapter.requestDevice();

// WGSL shaders: https://www.w3.org/TR/WGSL/
const workgroupSize = device.limits?.maxComputeInvocationsPerWorkgroup ?? 64;
const computeWgsl = `
struct IO {
  values: array<i32>,

## index.html
<!doctype html>
<html>
  <head>
    <!-- IMPORTANT: The current Chrome requires some origin-trial token in <meta>.
         To register origins at the last "WebGPU REGISTER" in https://developer.chrome.com/origintrials/
         This token is for a Web Origin "http://localhost:8000" (maybe expired at Mar 31, 2022)
      -->
    <meta http-equiv="origin-trial"
          content="AkIL+/THBoi1QEsWbX5SOuMpL6+KGAXKrZE5Bz6yHTuijzvKz2MznuLqE+MH4YSqRi/v1fDK/6JyFzgibTTeNAsAAABJeyJvcmlnaW4iOiJodHRwOi8vbG9jYWxob3N0OjgwMDAiLCJmZWF0dXJlIjoiV2ViR1BVIiwiZXhwaXJ5IjoxNjUyODMxOTk5fQ==" />
    <meta http-equiv="origin-trial"

## loader.html
<!doctype html>
<html>
<head>
<meta charset="utf-8" />
<title>STL File Viewer</title>
<script src="https://cdnjs.cloudflare.com/ajax/libs/three.js/r68/three.min.js"
></script>
<script src="https://rawgit.com/mrdoob/three.js/master/examples/js/controls/TrackballControls.js"
></script>
<script src="loader.js"></script>

## base58.js
// Bitcoin Base58 encoder/decoder algorithm
const btcTable = "123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz";
console.assert(btcTable.length === 58);

// Base58 decoder/encoder for BigInt
function b58ToBi(chars, table = btcTable) {
  const carry = BigInt(table.length);
  let total = 0n, base = 1n;
  for (let i = chars.length - 1; i >= 0; i--) {
    const n = table.indexOf(chars[i]);

## zip.js
"use strict";

const zip = function* () {
    const its = Array.from(arguments, e => e[Symbol.iterator]());
    while (true) {
        const es = its.map(it => it.next());
        if (es.some(e => e.done)) return;
	yield es.map(e => e.value);
    }
};

## example.js
import {inverse, direct} from "./vincenty.js";

{
  // example from https://vldb.gsi.go.jp/sokuchi/surveycalc/surveycalc/bl2stf.html
  const latlon1 = [36.10377477777778, 140.08785502777778], latlon2 = [35.65502847222223, 139.74475044444443];
  console.log(inverse(latlon1, latlon2));
  const s =58643.80450350114, a1to2 = 211.99252761069826;
  console.log(direct(latlon1, a1to2, s));
  console.log(latlon2);
}

## example-ipfs.html
<!doctype html>
<html>
  <head>
    <meta charset="utf-8" />
    <link rel="icon" href="data:img/x-icon," />
    <script type="module" src="./leaflet-gpx.js"></script>
  </head>
  <body style="height: 100vh; display: flex; align-items: center; justify-content: center;">
    <leaflet-gpx
      style="width: 80vmin; height: 80vmin;"
	#!/usr/bin/env -S deno run --allow-read --allow-run
	// usage: deno run --allow-read --allow-run movconcat.js /Volumes/UNTITLED/Normal/F/ result.mp4
	import * as path from "https://deno.land/std/path/mod.ts";

	const sources = Deno.args.at(-2);
	const output = Deno.args.at(-1);
	const inputs = [];
	for await (const {name} of Deno.readDir(sources)) inputs.push(name);
	inputs.sort();
	const list = inputs.map(f => `file ${path.toFileUrl(path.join(sources, f))}\n`).join(``);
	<!doctype html>
	<html>
	<head>
	<meta charset="utf-8" />
	<script src="https://cdnjs.cloudflare.com/ajax/libs/three.js/r68/three.min.js"
	></script>
	<script src="https://rawgit.com/mrdoob/three.js/master/examples/js/controls/Trac
	kballControls.js"
	></script>
	<script src="spiral.js"></script>
	// Compute example for WebGPU API for Chrome-103: https://www.w3.org/TR/webgpu/
	// [Usage] Paste whole codes into Web Comsole of the WebGPU demo page, then output 1024 Float32Array of squares
	const adapter = await navigator.gpu.requestAdapter();
	const device = await adapter.requestDevice();

	// WGSL shaders: https://www.w3.org/TR/WGSL/
	const workgroupSize = device.limits?.maxComputeInvocationsPerWorkgroup ?? 64;
	const computeWgsl = `
	struct IO {
	values: array<i32>,
	// Bitcoin Base58 encoder/decoder algorithm
	const btcTable = "123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz";
	console.assert(btcTable.length === 58);

	// Base58 decoder/encoder for BigInt
	function b58ToBi(chars, table = btcTable) {
	const carry = BigInt(table.length);
	let total = 0n, base = 1n;
	for (let i = chars.length - 1; i >= 0; i--) {
	const n = table.indexOf(chars[i]);
	"use strict";

	const zip = function* () {
	const its = Array.from(arguments, e => e[Symbol.iterator]());
	while (true) {
	const es = its.map(it => it.next());
	if (es.some(e => e.done)) return;
	yield es.map(e => e.value);
	}
	};
	import {inverse, direct} from "./vincenty.js";

	{
	// example from https://vldb.gsi.go.jp/sokuchi/surveycalc/surveycalc/bl2stf.html
	const latlon1 = [36.10377477777778, 140.08785502777778], latlon2 = [35.65502847222223, 139.74475044444443];
	console.log(inverse(latlon1, latlon2));
	const s =58643.80450350114, a1to2 = 211.99252761069826;
	console.log(direct(latlon1, a1to2, s));
	console.log(latlon2);
	}