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app.js
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app.js
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import { html, render } from 'lit';
import Papa from 'papaparse';
const DATA_API_ROOT = 'https://data.exploretrees.sg/';
const speciesFamily = {};
const fColorsMap = {};
const fColors = [];
const familiesSpeciesFetch = fetch(`${DATA_API_ROOT}families-species.json`)
.then((res) => res.json())
.then((data) => {
const familiesSpeciesData = data;
for (let family in familiesSpeciesData) {
familiesSpeciesData[family].forEach((s) => (speciesFamily[s] = family));
}
const families = Object.keys(familiesSpeciesData).sort();
const familiesCount = families.length;
families.forEach((f, i) => {
const hue = (i / familiesCount) * 300;
const color = `hsl(${hue}, 100%, 50%)`;
fColors.push(f, color);
fColorsMap[f] = {
hslStr: color,
rgbArr: HSLToRGB(hue, 100, 50),
};
});
fColors.push('slategray');
document.getElementById('legend-family').innerHTML = Object.keys(fColorsMap)
.map((f, i) => {
return `<a href="#family/${f}" class="ib">
<span class="circle" style="background-color: ${fColorsMap[f].hslStr}" title="${i}"></span>
${f}
</a>`;
})
.join('');
document.getElementById('legend-family').onclick = (e) => {
if (e.target.tagName.toLowerCase() === 'a') {
if (e.target.classList.contains('selected')) {
e.preventDefault();
location.hash = '#family';
}
}
};
});
const isTouch = 'ontouchstart' in window || navigator.msMaxTouchPoints;
const hqHash = /#hq/.test(location.hash);
const renderingMode = !hqHash && isTouch ? 'low' : 'high';
if (renderingMode === 'low')
document.getElementById('rendering-mode').hidden = false;
const distancePoints = (x1, y1, x2, y2) => {
const dx = x1 - x2;
const dy = y1 - y2;
return Math.sqrt(dx * dx + dy * dy);
};
// https://css-tricks.com/converting-color-spaces-in-javascript/
function hexToRGB(h) {
// Assume #123456
let r = 0,
g = 0,
b = 0;
r = +('0x' + h[1] + h[2]);
g = +('0x' + h[3] + h[4]);
b = +('0x' + h[5] + h[6]);
return [r, g, b];
}
function HSLToRGB(h, s, l) {
// Must be fractions of 1
s /= 100;
l /= 100;
let c = (1 - Math.abs(2 * l - 1)) * s,
x = c * (1 - Math.abs(((h / 60) % 2) - 1)),
m = l - c / 2,
r = 0,
g = 0,
b = 0;
if (0 <= h && h < 60) {
r = c;
g = x;
b = 0;
} else if (60 <= h && h < 120) {
r = x;
g = c;
b = 0;
} else if (120 <= h && h < 180) {
r = 0;
g = c;
b = x;
} else if (180 <= h && h < 240) {
r = 0;
g = x;
b = c;
} else if (240 <= h && h < 300) {
r = x;
g = 0;
b = c;
} else if (300 <= h && h < 360) {
r = c;
g = 0;
b = x;
}
r = Math.round((r + m) * 255);
g = Math.round((g + m) * 255);
b = Math.round((b + m) * 255);
return [r, g, b];
}
// https://stackoverflow.com/a/47355187/20838
const colorContext = document.createElement('canvas').getContext('2d');
const colorNameCache = new Map();
const colorName2RGB = (str) => {
if (colorNameCache.has(str)) return colorNameCache.get(str);
colorContext.fillStyle = str;
const rgb = hexToRGB(colorContext.fillStyle);
colorNameCache.set(str, rgb);
return rgb;
};
const $modal = document.getElementById('modal');
const $card = document.getElementById('card');
const $layersButton = document.getElementById('layers-button');
const $layers = document.getElementById('layers');
$layersButton.onclick = function () {
document.body.classList.toggle('modal');
$layers.hidden = !$layers.hidden;
};
function closeLayers() {
document.body.classList.remove('modal');
$layers.hidden = true;
}
$modal.onclick = closeLayers;
$layers.onclick = function (e) {
if (e.target.className.toLowerCase() === 'close') {
closeLayers();
}
if (/family\//i.test(e.target.href)) {
closeLayers();
}
};
mapboxgl.accessToken =
'pk.eyJ1IjoiY2hlZWF1biIsImEiOiJjanF3azBrMjMwM2w1NDNyN3Yzc21saDUzIn0.jNWlsBO-S3uDKdfT9IKT1A';
const mapBounds = [
[103.6016626883025, 1.233357600011331], // sw
[104.0381760444838, 1.473818072475055], // ne
];
const map = (window._map = new mapboxgl.Map({
container: 'map',
style: 'mapbox://styles/cheeaun/ckuuzdbmpf0uw17s058a34qq3?optimize=true',
minZoom: 8,
maxZoom: 20,
renderWorldCopies: false,
boxZoom: false,
attributionControl: false, // Attribution is inside Layers modal
bounds: mapBounds,
// maxTileCacheSize: renderingMode === 'low' ? 0 : null,
fadeDuration: renderingMode === 'high' ? 300 : 0,
}));
if (renderingMode === 'low') {
map.touchZoomRotate.disableRotation();
// map.on('error', (e) => alert(e));
}
const geolocateControl = new mapboxgl.GeolocateControl({
positionOptions: {
enableHighAccuracy: true,
},
showUserHeading: true,
trackUserLocation: true,
});
map.addControl(geolocateControl);
map.addControl(new mapboxgl.NavigationControl());
class Link3DControl {
onAdd(map) {
this._map = map;
const container = document.createElement('a');
container.className = 'mapboxgl-ctrl mapboxgl-ctrl-group';
container.innerHTML = `
<button class="mapboxgl-ctrl-icon mapboxgl-ctrl-custom-pitch" type="button">
<span>🌳</span>
</button>
`;
container.href = '/3d/';
container.target = '_blank';
container.style.textDecoration = 'none';
this._container = container;
return this._container;
}
}
map.addControl(new Link3DControl(), 'top-right');
setTimeout(() => {
let orientationGranted = false;
geolocateControl._geolocateButton.addEventListener('click', (e) => {
if (window.DeviceOrientationEvent && !orientationGranted) {
if (typeof DeviceOrientationEvent.requestPermission === 'function') {
DeviceOrientationEvent.requestPermission()
.then(function (permissionState) {
if (permissionState === 'granted') {
console.log('granted');
orientationGranted = true;
}
})
.catch((e) => {});
}
}
});
}, 1);
let labelLayerId;
let mapLoaded = new Promise((res, rej) => map.once('load', res));
let speciesData = {};
fetch(DATA_API_ROOT + 'species.json')
.then((res) => res.json())
.then((data) => {
speciesData = data;
});
map.once('styledata', () => {
const layers = map.getStyle().layers;
console.log(layers);
labelLayerId = layers.find(
(layer) => layer.type === 'symbol' && layer.layout['text-field'],
).id;
const poiStyles = {
layout: {
'icon-offset': [0, -4],
'icon-size': 0.5,
'text-max-width': 12,
'text-variable-anchor': ['left', 'right', 'bottom', 'top'],
'text-justify': 'auto',
'text-radial-offset': 0.9,
'text-padding': 1,
'text-size': 11,
'text-optional': true,
},
paint: {
'text-halo-blur': 1,
'text-halo-width': 1,
},
};
map.once('idle', () => {
fetch(DATA_API_ROOT + 'pois.json')
.then((res) => res.json())
.then((poisData) => {
map.addSource('pois', {
type: 'geojson',
tolerance: 10,
buffer: 0,
data: {
type: 'FeatureCollection',
features: poisData.map((p) => ({
type: 'Feature',
geometry: {
type: 'Point',
coordinates: p.position,
},
properties: {
name: p.name,
type: p.type,
},
})),
},
});
map.addImage('poi-park', document.getElementById('park-icon'));
map.addImage('poi-hroad', document.getElementById('hroad-icon'));
map.addImage(
'poi-srgreenery',
document.getElementById('srgreenery-icon'),
);
map.addImage('poi-garden', document.getElementById('garden-icon'));
map.addLayer({
id: 'pois',
type: 'symbol',
source: 'pois',
minzoom: 16,
layout: {
'icon-image': [
'match',
['get', 'type'],
'park',
'poi-park',
'hroad',
'poi-hroad',
'srgreenery',
'poi-srgreenery',
'garden',
'poi-garden',
'circle-11',
],
'text-allow-overlap': true,
'text-ignore-placement': true,
'text-field': ['step', ['zoom'], '', 16, ['get', 'name']],
...poiStyles.layout,
},
paint: {
'text-color': 'rgba(255,255,255,.85)',
'text-halo-color': 'rgba(0,0,0,0.85)',
...poiStyles.paint,
},
});
});
});
});
const markupCard = (d, selected) => html`
<button type="button" class="close">×</button>
<h1>
${(speciesData[d.species_id] || { name: d.species_id }).name}
${d.heritage ? html` <span title="heritage">🌳</span> ` : '🌱'}
</h1>
<div class="common ${selected ? 'expand' : ''}">
Family name:
${d.family
? html`
<b>${d.family}</b>
<span
class="circle"
style="background-color: ${d.familyColor
? d.familyColor.hslStr
: fColorsMap[d.family]}"
></span>
`
: '-'}
${selected
? html`
<br />
Common name:
${d.common_name ||
(speciesData[d.species_id] || {}).common_name ||
'-'}
`
: ''}
</div>
<table>
<thead>
<tr>
<th>Tree ID</th>
<th style="width: 8em">Girth (m)</th>
<th style="width: 8em">Height (m)</th>
<th style="width: 4em; text-align: right;">Age (Y)</th>
</tr>
</thead>
<tbody>
<tr>
<td>${d.tree_id}</td>
<td>${d.girth}</td>
<td>${d.height || '-'}</td>
<td style="text-align: right;">${d.age || '-'}</td>
</tr>
</tbody>
</table>
${selected
? html`
<div class="footer-buttons">
<a
href="https://www.google.com/maps/search/?api=1&query=${d.position
.slice(0, 2)
.reverse()
.join(',')}"
target="_blank"
>
<span hidden class="show-m">🗺 Open in</span>
Google Maps
</a>
<a
href="https://www.nparks.gov.sg/api/FFWApi/RedirectToFloraByMasterId?masterId=${d.species_id}"
target="_blank"
>
🔍 Learn more
</a>
</div>
`
: ''}
`;
const showTree = (d, selected = false) => {
render(markupCard(d, selected), $card);
$card.hidden = false;
$card.classList.toggle('selected', selected);
};
let highlightedTree;
let selectedTree;
let hideHighlightTree;
$card.onclick = (e) => {
if (e.target && e.target.tagName.toLowerCase() === 'a') {
return;
}
e.preventDefault();
e.stopPropagation();
if (e.target && e.target.classList.contains('close')) {
$card.hidden = true;
hideHighlightTree && hideHighlightTree();
selectedTree = highlightedTree = null;
} else if (highlightedTree) {
selectedTree = highlightedTree;
showTree(selectedTree, true);
flyToPosition(selectedTree.position);
}
};
const flyToPosition = (lngLat) => {
document.body.style.pointerEvents = 'none';
map.once('moveend', () => {
document.body.style.pointerEvents = '';
});
const zoom = map.getZoom();
if (zoom >= 16) {
map.easeTo({
center: lngLat,
zoom: Math.max(18, zoom),
});
} else {
map.flyTo({
speed: 1,
center: lngLat,
zoom: 16,
});
}
};
(async () => {
let currentFamily = null;
if (renderingMode === 'low') {
await mapLoaded;
map.addSource('trees-source', {
type: 'vector',
url: 'mapbox://cheeaun.bptkspgy', // Production
// url: 'mapbox://cheeaun.dgcdx6zd', // Staging
});
const layerStyles = {
type: {
paint: {
'circle-color': [
'case',
['to-boolean', ['get', 'heritage']],
'aqua',
'green',
],
'circle-radius': [
'interpolate',
['linear'],
['zoom'],
8,
0.5,
14,
['case', ['to-boolean', ['get', 'heritage']], 3, 1.25],
20,
['case', ['to-boolean', ['get', 'heritage']], 10, 6],
],
'circle-stroke-width': [
'interpolate',
['linear'],
['zoom'],
11,
0,
14,
1,
],
'circle-stroke-color': 'rgba(0,0,0,.25)',
},
},
girth: {
paint: {
'circle-color': [
'match',
['get', 'girth_size'],
'L',
'orangered',
'M',
'green',
'S',
'limegreen',
'XS',
'yellow',
'slategray',
],
'circle-opacity': [
'match',
['get', 'girth_size'],
'L',
1,
'M',
0.78,
'S',
0.56,
'XS',
0.5,
0.5,
],
'circle-radius': [
'interpolate',
['linear'],
['zoom'],
10,
0.5,
20,
5,
],
},
},
age: {
paint: {
'circle-color': [
'interpolate',
['linear'],
['to-number', ['get', 'age'], 0],
0,
'slategray',
0.001,
'yellow',
10,
'orange',
20,
'lime',
30,
'orangered',
100,
'magenta',
],
'circle-opacity': [
'interpolate',
['linear'],
['to-number', ['get', 'age'], 0],
0,
0.25,
1,
0.5,
10,
0.6,
20,
0.78,
30,
1,
],
'circle-radius': [
'interpolate',
['linear'],
['zoom'],
10,
[
'case',
['>', ['to-number', ['get', 'age']], 30],
['max', 0.5, ['min', 3, ['to-number', ['get', 'age']]]],
0.5,
],
20,
5,
],
},
},
family: {
paint: {
'circle-color': ['match', ['to-string', ['get', 'family']]].concat(
fColors,
),
'circle-opacity': () => [
'case',
['all', !!currentFamily, ['!=', ['get', 'family'], currentFamily]],
16 / 256,
['to-boolean', ['get', 'family']],
1,
0.5,
],
'circle-radius': () => [
'interpolate',
['linear'],
['zoom'],
10,
[
'case',
[
'all',
!!currentFamily,
['==', ['get', 'family'], currentFamily],
],
2,
0.5,
],
20,
5,
],
},
},
};
map.addLayer(
{
id: 'trees',
type: 'circle',
source: 'trees-source',
'source-layer': 'trees',
layout: {
visibility: 'none',
},
},
labelLayerId,
);
map.addSource('highlight-tree', {
type: 'geojson',
tolerance: 10,
buffer: 0,
data: {
type: 'Feature',
},
});
map.addLayer({
id: 'highlight-tree',
type: 'circle',
source: 'highlight-tree',
layout: {
visibility: 'none',
},
paint: {
'circle-color': [
'interpolate',
['linear'],
['zoom'],
0,
'rgba(255, 255, 255, .5)',
20,
'rgba(255, 255, 255, .1)',
],
'circle-stroke-width': 3,
'circle-stroke-color': 'dodgerblue',
'circle-radius': [
'interpolate',
['linear'],
['zoom'],
0,
5,
14,
8,
24,
16,
],
},
});
const highlightTreeSource = map.getSource('highlight-tree');
function showHighlightTree(coordinates) {
map.setLayoutProperty('highlight-tree', 'visibility', 'visible');
highlightTreeSource.setData({
type: 'Feature',
properties: {},
geometry: {
type: 'Point',
coordinates,
},
});
}
hideHighlightTree = () => {
map.setLayoutProperty('highlight-tree', 'visibility', 'none');
};
window.onhashchange = function () {
const hash = decodeURIComponent(location.hash.slice(1));
let filters = hash.trim().split('/');
const filter = filters[0] || 'type';
const filter2 = filters[1] || null;
currentFamily = filter === 'family' ? filter2 : null;
console.log({ filters });
let styles = layerStyles[filter];
if (!styles) {
filter = 'type';
styles = layerStyles.type;
}
const { paint } = styles;
for (let name in paint) {
map.setPaintProperty(
'trees',
name,
typeof paint[name] === 'function' ? paint[name]() : paint[name],
);
}
map.setLayoutProperty('trees', 'visibility', 'visible');
const links = document.querySelectorAll('#layers a');
for (let i = 0; i < links.length; i++) {
const link = links[i];
link.classList.toggle(
'selected',
link.innerText.toLowerCase() == filter ||
link.innerText.trim() == currentFamily,
);
}
const legends = document.querySelectorAll('#layers .legend');
for (let i = 0; i < legends.length; i++) {
const legend = legends[i];
legend.classList.toggle('selected', legend.classList.contains(filter));
}
};
window.onhashchange();
const pointRange = 10;
map.on('click', (e) => {
const { point, lngLat } = e;
if (selectedTree) {
const { point } = e;
const treePoint = map.project(selectedTree.position);
const distance = distancePoints(
point.x,
point.y,
treePoint.x,
treePoint.y,
);
if (distance > 30) {
// If cursor click is far away from selected tree,
// reset everything
selectedTree = highlightedTree = null;
$card.hidden = true;
hideHighlightTree();
}
} else {
let feature;
let features = map.queryRenderedFeatures(point, { layers: ['trees'] });
if (features.length) {
feature = features[0];
} else {
const { x, y } = point;
features = map.queryRenderedFeatures(
[
[x - pointRange, y - pointRange],
[x + pointRange, y + pointRange],
],
{ layers: ['trees'] },
);
let shortestDistance = Infinity;
features.forEach((f) => {
const { coordinates } = f.geometry;
const distance = distancePoints(
lngLat.lng,
lngLat.lat,
coordinates[0],
coordinates[1],
);
if (distance < shortestDistance) {
shortestDistance = distance;
feature = f;
}
});
}
// console.log(e, features);
if (feature) {
const { properties } = feature;
const position = (properties.position = properties.position
.split(',')
.map(Number));
highlightedTree = properties;
showTree(highlightedTree);
showHighlightTree(position);
} else {
highlightedTree = null;
$card.hidden = true;
hideHighlightTree();
}
}
return true;
});
map.on('dragstart', () => {
if (selectedTree) return;
if ($card.hidden) return;
$card.hidden = true;
hideHighlightTree();
return true;
});
} else {
const {
MapboxLayer,
AmbientLight,
SunLight,
LightingEffect,
ScatterplotLayer,
// SolidPolygonLayer,
SimpleMeshLayer,
SphereGeometry,
TruncatedConeGeometry,
polyline,
KDBush,
geokdbush,
// circle,
throttle,
} = await import('./hq.bundle');
const highlightPoint = {};
const highlightTreeLayer = new MapboxLayer({
visible: false,
id: 'highlight-tree',
type: ScatterplotLayer,
opacity: 1,
radiusMinPixels: 10,
getRadius: 3,
getFillColor: [26, 128, 227, 50],
stroked: true,
lineWidthUnits: 'pixels',
getLineWidth: 3,
getLineColor: [26, 128, 227, 255],
parameters: {
depthTest: false,
},
});
function showHighlightTree(coordinates) {
highlightPoint.position = coordinates;
highlightTreeLayer.setProps({
visible: true,
data: [highlightPoint],
});
}
hideHighlightTree = () => {
highlightTreeLayer.setProps({
visible: false,
});
};
// Pitch control
class PitchControl {
onAdd(map) {
this._map = map;
const container = document.createElement('div');
container.className = 'mapboxgl-ctrl mapboxgl-ctrl-group';
container.innerHTML = `
<button class="mapboxgl-ctrl-icon mapboxgl-ctrl-custom-pitch" type="button">
<span>3D</span>
</button>
`;
container.onclick = function () {
const pitch = map.getPitch();
const zoom = map.getZoom();
let nextPitch = 0;
if (pitch <= 5) nextPitch = 80;
if (zoom < 17 && pitch < 5) {
map.flyTo({
pitch: nextPitch,
zoom: 17,
});
} else {
map.easeTo({
pitch: nextPitch,
});
}
};
map.on('pitchend', this.onPitch);
this._container = container;
return this._container;
}
onPitch = () => {
const pitch = this._map.getPitch();
const is3DMode = pitch > 5;
this._container.classList.toggle('active', is3DMode);
};
onRemove() {
this._container.parentNode.removeChild(this._container);
this._map.off('pitchend', this.onPitch);
this._map = undefined;
}
}
map.addControl(new PitchControl(), 'top-right');
document.getElementById('map').classList.remove('loaded');
const fetchCSV = new Promise((resolve, reject) => {
console.time('csv download');
Papa.parse(DATA_API_ROOT + 'trees-no-coords.csv.txt', {
download: true,
header: true,
fastMode: true,
worker: true,
complete: (results) => {
console.timeEnd('csv download');
resolve(results.data);
},
error: (e) => {
reject(e);
},
});
});
const fetchLines = fetch(DATA_API_ROOT + 'trees.line.txt')
.then((res) => res.text())
.then((text) => {
const coords = polyline.decode(text);
return coords;
});
const fetchHeritage = fetch(DATA_API_ROOT + 'heritage-trees.json').then(
(res) => res.json(),
);
const fetchTrees = Promise.all([
fetchCSV,
fetchLines,
fetchHeritage,
familiesSpeciesFetch,
]).then(([props, coords, heritageList]) => {
// console.log({ props, coords });
const metadata = {};
const data = props.map((p, i) => {
const {
id,
tree_id,
species_id,
girth,
girth_size,
height,
height_est,
age,
} = p;
// const names = speciesData[species_id] || {};
const family = speciesFamily[species_id] || null;
const heritage = heritageList.includes(id);
const elevation = heritage ? 0.4 : age > 30 ? 0.3 : family ? 0.2 : 0.1;
const position = coords[i].concat(elevation);
metadata[id] = {
tree_id,
species_id,
girth,
height,
// name: names.name || '',
// common_name: names.common_name || '',
family,
};
return {
id,
position,
// all properties needed for rendering
girth,
girth_size,
height_est: +height_est,
age: +age,
heritage,
family,
familyColor: fColorsMap[family] || null,
};
});
return [data, metadata];
});
const treesLayer = new MapboxLayer({
id: 'trees',
type: ScatterplotLayer,
opacity: 1,
radiusMinPixels: 0.2,
radiusMaxPixels: 5,
lineWidthUnits: 'pixels',
getLineWidth: 1,
getLineColor: [0, 0, 0, 200],
// parameters: {
// depthTest: false,
// },
});
map.on('zoom', () => {
const zoom = map.getZoom();
treesLayer.setProps({
stroked: zoom >= 16,
});
});
const layerStyles = {
type: {
getRadius: (d) => (d.heritage ? 100 : 3),
getFillColor: (d) => {
if (d.heritage) return colorName2RGB('aqua');
return colorName2RGB('green');
},
},
girth: {
getRadius: 3,
getFillColor: (d) => {
const color = {
NULL: ['slategray', 128],
XS: ['yellow', 140],
S: ['limegreen', 170],
M: ['green', 200],
L: ['orangered', 255],
}[d.girth_size || 'NULL'];
return colorName2RGB(color[0]).concat(color[1]);
},
},
age: {
getRadius: (d) => (d.age > 30 ? Math.max(3, d.age) : 3),
getFillColor: ({ age }) => {
if (age >= 100) return colorName2RGB('magenta');
if (age > 30) return colorName2RGB('orangered');