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visualize proximate clusters

This commit is contained in:
“chrisshank” 2024-11-28 11:17:24 -08:00
parent ef338280e1
commit 8da1016d89
3 changed files with 156 additions and 46 deletions
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188
demo/proximity-maps.html
View File

@ -3,7 +3,7 @@
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Maps</title>
<title>Proximity Maps</title>
<style>
* {
box-sizing: border-box;
@ -27,6 +27,7 @@
}
geo-wiki {
background: white;
border: solid 2px black;
border-radius: 5px;
ul {
@ -37,7 +38,7 @@
}
}
olk-hull {
folk-cluster {
display: block;
position: absolute;
inset: 0 0 0 0;
@ -47,17 +48,19 @@
</style>
</head>
<body>
<fc-geometry id="1" x="25" y="100" width="400" height="200">
<folk-map coordinates="52.09, 5.12" zoom="13"></folk-map>
</fc-geometry>
<folk-proximity>
<fc-geometry id="g1" x="25" y="100" width="400" height="200">
<folk-map coordinates="52.09, 5.12" zoom="13"></folk-map>
</fc-geometry>
<fc-geometry id="2" x="50" y="550" width="400" height="250">
<folk-map coordinates="51.50404120260676, -0.14007568359375003" zoom="13"></folk-map>
</fc-geometry>
<fc-geometry id="g2" x="50" y="550" width="400" height="250">
<folk-map coordinates="51.50404120260676, -0.14007568359375003" zoom="13"></folk-map>
</fc-geometry>
<fc-geometry id="3" x="500" y="400" width="500" height="300">
<geo-wiki coordinates="51.50404120260676, -0.14007568359375003"></geo-wiki>
</fc-geometry>
<fc-geometry id="g3" x="500" y="400" width="500" height="300">
<geo-wiki coordinates="51.50404120260676, -0.14007568359375003"></geo-wiki>
</fc-geometry>
</folk-proximity>
<script type="module">
import { FolkGeometry } from '../src/canvas/fc-geometry.ts';
@ -69,39 +72,6 @@
FolkMap.register();
FolkHull.register();
const geometries = Array.from(document.querySelectorAll('fc-geometry'));
const proximityMap = new Map(geometries.map((el) => [el, new Set()]));
function handleProximity(e) {
proximityMap.forEach((set, el) => {
if (el !== e.target) {
const alreadyIntersection = set.has(e.target);
// TODO: refactor this hack once resizing and the vertices API are figured out
const isNowIntersecting = collisionDetection(el.getClientRect(), e.target.getClientRect(), 100);
if (isNowIntersecting && !alreadyIntersection) {
set.add(e.target);
proximityMap.get(e.target)?.add(el);
} else if (alreadyIntersection && !isNowIntersecting) {
set.delete(e.target);
proximityMap.get(e.target)?.delete(el);
}
}
});
}
document.addEventListener('move', handleProximity);
document.addEventListener('resize', handleProximity);
document.addEventListener('recenter', (e) => {
proximityMap.get(e.target.parentElement)?.forEach((el) => {
const content = el.firstElementChild;
if (content instanceof GeoWiki) {
const { lat, lng } = e.target.coordinates;
content.coordinates = [lat, lng];
}
});
});
class GeoWiki extends HTMLElement {
static tagName = 'geo-wiki';
@ -166,6 +136,136 @@
}
GeoWiki.register();
const PROXIMITY = 50;
class FolkCluster extends FolkHull {
static tagName = 'folk-cluster';
#data = new Map();
isElementInCluster(element) {
return this.sourceElements.includes(element);
}
isElementInProximity(element) {
for (const el of this.sourceElements) {
if (collisionDetection(el.getClientRect(), element.getClientRect(), PROXIMITY)) return true;
}
return false;
}
addElements(...elements) {
this.sources += elements.map((el) => `#${el.id}`).join(', ');
}
removeElement(element) {
this.sources = this.sourceElements
.filter((el) => el !== element)
.map((el) => `#${el.id}`)
.join(', ');
}
}
FolkCluster.register();
class FolkProximity extends HTMLElement {
static tagName = 'folk-proximity';
static register() {
customElements.define(this.tagName, this);
}
#clusters = new Set();
#geometries = Array.from(this.querySelectorAll('fc-geometry'));
constructor() {
super();
this.addEventListener('move', this.#handleProximity);
this.addEventListener('resize', this.#handleProximity);
// document.addEventListener('recenter', (e) => {
// proximityMap.get(e.target.parentElement)?.forEach((el) => {
// const content = el.firstElementChild;
// if (content instanceof GeoWiki) {
// const { lat, lng } = e.target.coordinates;
// content.coordinates = [lat, lng];
// }
// });
// });
}
#handleProximity = (e) => {
const el = e.target;
const cluster = this.#findCluster(el);
if (cluster === null) {
for (const cluster of this.#clusters) {
// what if its in proximity to multiple clusters?
if (cluster.isElementInProximity(element)) {
cluster.addElements(element);
return;
}
}
for (const geometry of this.#geometries) {
if (geometry === el) break;
if (collisionDetection(geometry.getClientRect(), el.getClientRect(), PROXIMITY)) {
const cluster = document.createElement('folk-cluster');
cluster.addElements(geometry, el);
this.#clusters.add(cluster);
this.appendChild(cluster);
return;
}
}
} else {
const isInCluster = cluster.sourceElements
.filter((element) => el !== element)
.some((element) => collisionDetection(el.getClientRect(), element.getClientRect(), PROXIMITY));
if (!isInCluster) {
cluster.removeElement(el);
if (cluster.sourcesMap.size === 1) {
this.#clusters.delete(cluster);
cluster.remove();
}
}
}
};
#findCluster(element) {
for (const cluster of this.#clusters) {
if (cluster.isElementInCluster(element)) return cluster;
}
return null;
}
}
FolkProximity.register();
/* proximityMap.forEach((set, el) => {
if (el !== e.target) {
const alreadyIntersection = set.has(e.target);
// TODO: refactor this hack once resizing and the vertices API are figured out
const isNowIntersecting = collisionDetection(el.getClientRect(), e.target.getClientRect(), 100);
if (isNowIntersecting && !alreadyIntersection) {
console.log('create cluster');
set.add(e.target);
proximityMap.get(e.target)?.add(el);
// hull = document.createElement('folk-hull');
// hull.sources = `#${el.id}, #${e.target.id}`;
// document.body.append(hull);
} else if (alreadyIntersection && !isNowIntersecting) {
console.log('delete cluster');
set.delete(e.target);
proximityMap.get(e.target)?.delete(el);
// hull.remove();
// hull = null;
}
}
}); */
</script>
</body>
</html>

10
src/folk-hull.ts
View File

@ -4,6 +4,12 @@ import { Vertex, verticesToPolygon } from './arrows/utils';
export class FolkHull extends FolkSet {
static tagName = 'folk-hull';
#hull: Vertex[] = [];
get hull(): ReadonlyArray<Vertex> {
return this.#hull;
}
update() {
if (this.sourcesMap.size === 0) {
this.style.clipPath = '';
@ -11,8 +17,8 @@ export class FolkHull extends FolkSet {
}
const rects = Array.from(this.sourcesMap.values());
const hull = makeHull(rects);
this.style.clipPath = verticesToPolygon(hull);
this.#hull = makeHull(rects);
this.style.clipPath = verticesToPolygon(this.#hull);
}
}

4
src/folk-set.ts
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@ -25,6 +25,10 @@ export class FolkSet extends HTMLElement {
return this.#sourcesMap;
}
get sourceElements() {
return Array.from(this.#sourcesMap.keys());
}
#sourcesCallback = (entry: ClientRectObserverEntry) => {
this.#sourcesMap.set(entry.target, entry.contentRect);
this.update();