Hello, paintWorklet / Fil

Fil

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Hello

Edited

Feb 13, 2021

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Hello

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Hello, paintWorklet

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// default styles for our div

html`<style>

.painted{

background: paint(${name});

--rotate: [0, 35];

--sphere-color: lightblue;

// updates our div’s styles

animateCss = () =>

.selectAll(".painted")

.interrupt()

.transition()

.ease(d3.easeBackInOut)

.duration(1000)

.style("--rotate", "[720, -15]")

.style("--sphere-color", d3.interpolateRainbow(Math.random()))

.transition()

.duration(5000)

.ease(d3.easeElasticInOut)

.style("--rotate", "[0, -35]")

.style("--sphere-color", "lightblue")

.transition()

.duration(100)

.style("--rotate", "[0, -35]")

// set the click handler on our div, an animate it once

.select(text)

.selectAll(".painted")

.on("click", animateCss)

.style("cursor", "pointer")

.call(animateCss)

// the function we’ll send to the worklet. It only has access to the scripts defined in the preamble

painter = (name, { land }) => {

const projection = d3.geoOrthographic();

const path = d3.geoPath(projection);

let i = 0;

class Worklet {

static get inputProperties() {

return ['--sphere-color', '--rotate'];

}

paint(context, { width, height }, properties) {

console.log("running", i++);

path.context(context);

const rotate = JSON.parse(

properties

.get('--rotate')

.toString()

.trim()

);

projection

.fitExtent([[10, 10], [width - 10, height - 10]], { type: "Sphere" })

.rotate(rotate);

context.fillStyle = properties

.get('--sphere-color')

.toString()

.trim();

context.beginPath();

path({ type: "Sphere" });

context.fill();

context.beginPath();

path(land);

context.fillStyle = "white";

context.fill();

context.beginPath();

path({ type: "Sphere" });

context.stroke();

}

globalThis.registerPaint(name, Worklet);

}

// this should be d3-geo@2 when it's compatible, see https://github.com/d3/d3-delaunay/issues/111

preamble = `

import 'https://unpkg.com/d3@6';

name = register(preamble, {land})

const name = "aa" + Math.floor(Math.random() * 1e19);

CSS.paintWorklet.addModule(

"data:text/javascript;base64," +

btoa(

`${preamble};

(${painter.toString()})

(${JSON.stringify(name)},

${args.map(d => JSON.stringify(d))})

)

);

return name;

}

land = fetch(

"https://unpkg.com/visionscarto-world-atlas@0.0.6/world/110m_land.geojson"

).then(d => d.json())

// no d3-geo!

d3 = require("d3-selection@2", "d3-transition@2", "d3-ease@2", "d3-scale-chromatic@2")

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