Published
Edited
Jul 8, 2020
1 star
L = d3.packSiblings(
[{r:blog_middlerad, logo: true}].concat(
d3.range(350).map(i => ({r: (Math.random()) * (i/10)})).reverse()
))
//import {Scrubber} from "@mbostock/scrubber"
function Scrubber(values, {
format = value => value,
initial = 0,
delay = null,
autoplay = true,
loop = true,
loopDelay = null,
alternate = false
} = {}) {
values = Array.from(values);
const form = html`<form style="font: 12px var(--sans-serif); font-variant-numeric: tabular-nums; display: flex; height: 33px; align-items: center;">
<button name=b type=button style="margin-right: 0.4em; width: 5em;"></button>
<label style="display: flex; align-items: center;">
<input name=i type=range min=0 max=${values.length - 1} value=${initial} step=1 style="width: 180px;">
<output name=o style="margin-left: 0.4em;"></output>
</label>
</form>`;
let frame = null;
let timer = null;
let interval = null;
let direction = 1;
function start() {
form.b.textContent = "Pause";
if (delay === null) frame = requestAnimationFrame(tick);
else interval = setInterval(tick, delay);
}
function stop() {
form.b.textContent = "Play";
if (frame !== null) cancelAnimationFrame(frame), frame = null;
if (timer !== null) clearTimeout(timer), timer = null;
if (interval !== null) clearInterval(interval), interval = null;
}
function running() {
return frame !== null || timer !== null || interval !== null;
}
function tick() {
if (form.i.valueAsNumber === (direction > 0 ? values.length - 1 : direction < 0 ? 0 : NaN)) {
if (!loop) return stop();
if (alternate) direction = -direction;
if (loopDelay !== null) {
if (frame !== null) cancelAnimationFrame(frame), frame = null;
if (interval !== null) clearInterval(interval), interval = null;
timer = setTimeout(() => (step(), start()), loopDelay);
return;
}
}
if (delay === null) frame = requestAnimationFrame(tick);
step();
}
function step() {
form.i.valueAsNumber = (form.i.valueAsNumber + direction + values.length) % values.length;
form.i.dispatchEvent(new CustomEvent("input", {bubbles: true}));
}
form.i.oninput = event => {
if (event && event.isTrusted && running()) stop();
form.value = values[form.i.valueAsNumber];
form.o.value = format(form.value, form.i.valueAsNumber, values);
};
form.b.onclick = () => {
if (running()) return stop();
direction = alternate && form.i.valueAsNumber === values.length - 1 ? -1 : 1;
form.i.valueAsNumber = (form.i.valueAsNumber + direction) % values.length;
form.i.dispatchEvent(new CustomEvent("input", {bubbles: true}));
start();
};
form.i.oninput();
if (autoplay) start();
else stop();
//disposal(form).then(stop);
return form;
}
One platform to build and deploy the best data apps
Experiment and prototype by building visualizations in live JavaScript notebooks. Collaborate with your team and decide which concepts to build out.
Use Observable Framework to build data apps locally. Use data loaders to build in any language or library, including Python, SQL, and R.
Seamlessly deploy to Observable. Test before you ship, use automatic deploy-on-commit, and ensure your projects are always up-to-date.