nodes = {
let system;
let gen = DiscSampler(width, 300, 20);
let points = [];
let pointsHash = [];
let finished = false;
let obj = {
points,
pointsHash,
}
for (let i = 0; i < totalPoints / 20; i++) {
if (finished) break;
finished = genPoints(points, 20);
yield obj
}
function genPoints(container, num = 20) {
let result;
for (let i = 0; i < num; i++) {
result = gen.next();
if (result.done) {
break;
}
if (container) {
container.push(result.value);
pointsHash[container.length - 1] =
hash(result.value[0], result.value[1]);
}
}
return result.done;
}
}
{
hide
map.update(nodes, ratio)
}
map = {
const svg = d3.create('svg')
.attr("width", width)
.attr("height", 300)
.attr("viewBox", [0, 0, width, 300])
.attr(
"style",
"max-width: 100%; height: auto; height: intrinsic;border: solid 1px"
)
const circles = svg.append('g')
.attr('stroke', 200)
.attr('stroke-width', 2)
.attr('fill', 'gray')
function update(result, ratio){
circles.selectAll('circle')
.data(result.points)
.join('circle')
.attr('cx', d=>d[0])
.attr('cy', d=>d[1])
.attr('r', 5)
.style('opacity', (_, i) => result.pointsHash[i] > ratio ? '25%' : '100%' )
}
return {
svg,
update,
}
}
svgCircle = (p5, x, y)=>{
return d3.create('circle')
.attr('stroke', 200)
.attr('stroke-width', 2)
.attr('fill')
.attr('cx', x)
.attr('cy', y)
.attr('r', 5)
}
hash = (x, y) => {
const arr = new Float64Array([x, y])
return xxhash.h32(new Uint8Array(arr)) / 0xFFFFFFFF
}
xxhash = (await require('xxhash-wasm@1.0.2/umd/xxhash-wasm.js'))()
import { DiscSampler } from "@fil/2d-point-distributions"
import {p5, ParticleSystem} from "@tmcw/p5"
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