Colorimetry
Set brightness, constrast, and saturation on color layers and maps.
import { Vector3 } from 'three';
import { MapControls } from 'three/examples/jsm/controls/MapControls.js';
import { Fill, Stroke, Style } from 'ol/style.js';
import GeoJSON from 'ol/format/GeoJSON.js';
import Instance from '@giro3d/giro3d/core/Instance.js';
import Extent from '@giro3d/giro3d/core/geographic/Extent.js';
import Map from '@giro3d/giro3d/entities/Map.js';
import ColorLayer from '@giro3d/giro3d/core/layer/ColorLayer.js';
import Inspector from '@giro3d/giro3d/gui/Inspector.js';
import WmsSource from '@giro3d/giro3d/sources/WmsSource.js';
import VectorSource from '@giro3d/giro3d/sources/VectorSource.js';
document.getElementById('layer-select').addEventListener('change', function () {
var selectedValue = this.value;
document.getElementById('map-settings').style.display = 'none';
document.getElementById('satellite-settings').style.display = 'none';
document.getElementById('geojson-settings').style.display = 'none';
if (selectedValue === 'map') {
document.getElementById('map-settings').style.display = 'block';
} else if (selectedValue === 'satellite') {
document.getElementById('satellite-settings').style.display = 'block';
} else if (selectedValue === 'geojson') {
document.getElementById('geojson-settings').style.display = 'block';
}
});
const viewer = document.getElementById('viewerDiv');
Instance.registerCRS(
'EPSG:3946',
'+proj=lcc +lat_1=45.25 +lat_2=46.75 +lat_0=46 +lon_0=3 +x_0=1700000 +y_0=5200000 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs',
);
Instance.registerCRS('EPSG:4171', '+proj=longlat +ellps=GRS80 +no_defs +type=crs');
const instance = new Instance(viewer, { crs: 'EPSG:3946' });
const xmin = 1837816.94334;
const xmax = 1847692.32501;
const ymin = 5170036.4587;
const ymax = 5178412.82698;
const extent = new Extent('EPSG:3946', xmin, xmax, ymin, ymax);
const map = new Map('city-of-lyon', { extent });
instance.add(map);
const satelliteSource = new WmsSource({
url: 'https://data.geopf.fr/wms-r',
projection: 'EPSG:3946',
layer: 'HR.ORTHOIMAGERY.ORTHOPHOTOS',
imageFormat: 'image/jpeg',
});
const colorLayer = new ColorLayer({
name: 'satellite',
source: satelliteSource,
extent: map.extent,
});
map.addLayer(colorLayer);
// Adds our first layer from a geojson file
// Initial source: https://data.grandlyon.com/jeux-de-donnees/parcs-places-jardins-indice-canopee-metropole-lyon/info
const geoJsonLayer = new ColorLayer({
name: 'geojson',
source: new VectorSource({
data: 'https://3d.oslandia.com/lyon/evg_esp_veg.evgparcindiccanope_latest.geojson',
// Defines the dataProjection to reproject the data,
// GeoJSON specifications say that the crs should be EPSG:4326 but
// here we are using a different one.
dataProjection: 'EPSG:4171',
format: new GeoJSON(),
style: feature =>
new Style({
fill: new Fill({
color: `rgba(0, 128, 0, ${feature.get('indiccanop')})`,
}),
stroke: new Stroke({
color: 'white',
}),
}),
}),
});
map.addLayer(geoJsonLayer);
const camera = instance.camera.camera3D;
const cameraAltitude = 2000;
const cameraPosition = new Vector3(extent.west(), extent.south(), cameraAltitude);
camera.position.copy(cameraPosition);
const controls = new MapControls(camera, instance.domElement);
controls.target = extent.centerAsVector3();
controls.enableDamping = true;
controls.dampingFactor = 0.2;
controls.maxPolarAngle = Math.PI / 2.3;
controls.saveState();
instance.useTHREEControls(controls);
function bindSlider(name, fn) {
const slider = document.getElementById(name);
slider.oninput = function oninput() {
fn(slider.value);
instance.notifyChange(map);
};
}
function bindLayerSliders(id, layer) {
document.getElementById(`${id}-reset`).onclick = function onclick() {
layer.brightness = 0;
layer.saturation = 1;
layer.contrast = 1;
instance.notifyChange(map);
};
bindSlider(`${id}-brightness`, v => {
layer.brightness = v;
});
bindSlider(`${id}-contrast`, v => {
layer.contrast = v;
});
bindSlider(`${id}-saturation`, v => {
layer.saturation = v;
});
}
bindLayerSliders('satellite', colorLayer);
bindLayerSliders('vector', geoJsonLayer);
const mapParams = map.materialOptions.colorimetry;
bindSlider('map-brightness', v => {
mapParams.brightness = v;
});
bindSlider('map-contrast', v => {
mapParams.contrast = v;
});
bindSlider('map-saturation', v => {
mapParams.saturation = v;
});
document.getElementById('map-reset').onclick = function onclick() {
mapParams.brightness = 0;
mapParams.contrast = 1;
mapParams.saturation = 1;
instance.notifyChange(map);
};
Inspector.attach(document.getElementById('panelDiv'), instance);<!doctype html>
<html lang="en">
<head>
<title>Color Adjustment</title>
<meta charset="UTF-8" />
<meta name="name" content="color_adjustments" />
<meta name="description" content="Set brightness, constrast, and saturation on color layers and maps." />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<link rel="icon" href="https://giro3d.org/images/favicon.svg" />
<link href="https://giro3d.org/assets/bootstrap-custom.css" rel="stylesheet" />
<script src="https://giro3d.org/assets/bootstrap.bundle.min.js"></script>
<link
rel="stylesheet"
type="text/css"
href="https://giro3d.org/latest/css/example.css"
/>
</head>
<body>
<div id="viewerDiv" class="m-0 p-0 w-100 h-100"></div>
<div id="panelDiv" class="position-absolute top-0 start-0 mh-100 overflow-auto"></div>
<div class="side-pane-with-status-bar">
<div class="card">
<div class="card-header">Colorimetry</div>
<div class="card-body">
<select class="form-select" id="layer-select">
<option value="map">Map</option>
<option value="satellite">Satellite layer</option>
<option value="geojson">GeoJSON layer</option>
</select>
<ul class="list-group list-group-flush">
<li class="list-group-item" id="map-settings">
<!-- Map parameters -->
<form>
<label for="map-brightness" class="form-label">Brightness</label>
<div class="input-group">
<input
type="range"
min="-1"
max="1"
value="0"
class="form-range"
step="0.05"
id="map-brightness"
autocomplete="off"
/>
</div>
<label for="map-contrast" class="form-label">Contrast</label>
<div class="input-group">
<input
type="range"
min="0"
max="3"
value="1"
class="form-range"
step="0.05"
id="map-contrast"
autocomplete="off"
/>
</div>
<label for="map-saturation" class="form-label">Saturation</label>
<div class="input-group">
<input
type="range"
min="0"
max="3"
value="1"
class="form-range"
step="0.05"
id="map-saturation"
autocomplete="off"
/>
</div>
<div class="input-group my-2">
<input
id="map-reset"
type="reset"
class="btn btn-primary"
value="Reset"
/>
</div>
</form>
</li>
<li class="list-group-item" id="satellite-settings" style="display: none">
<!-- Satellite layer parameters -->
<form>
<label for="satellite-brightness" class="form-label">Brightness</label>
<div class="input-group">
<input
type="range"
min="-1"
max="1"
value="0"
class="form-range"
step="0.05"
id="satellite-brightness"
autocomplete="off"
/>
</div>
<label for="satellite-contrast" class="form-label">Contrast</label>
<div class="input-group">
<input
type="range"
min="0"
max="3"
value="1"
class="form-range"
step="0.05"
id="satellite-contrast"
autocomplete="off"
/>
</div>
<label for="satellite-saturation" class="form-label">Saturation</label>
<div class="input-group">
<input
type="range"
min="0"
max="3"
value="1"
class="form-range"
step="0.05"
id="satellite-saturation"
autocomplete="off"
/>
</div>
<div class="input-group my-2">
<input
id="satellite-reset"
type="reset"
class="btn btn-primary"
value="Reset"
/>
</div>
</form>
</li>
<li class="list-group-item" id="geojson-settings" style="display: none">
<!-- Vector layer parameters -->
<form>
<label for="vector-brightness" class="form-label">Brightness</label>
<div class="input-group">
<input
type="range"
min="-1"
max="1"
value="0"
class="form-range"
step="0.05"
id="vector-brightness"
autocomplete="off"
/>
</div>
<label for="vector-contrast" class="form-label">Contrast</label>
<div class="input-group">
<input
type="range"
min="0"
max="3"
value="1"
class="form-range"
step="0.05"
id="vector-contrast"
autocomplete="off"
/>
</div>
<label for="vector-saturation" class="form-label">Saturation</label>
<div class="input-group">
<input
type="range"
min="0"
max="3"
value="1"
class="form-range"
step="0.05"
id="vector-saturation"
autocomplete="off"
/>
</div>
<div class="input-group my-2">
<input
id="vector-reset"
type="reset"
class="btn btn-primary"
value="Reset"
/>
</div>
</form>
</li>
</ul>
</div>
</div>
</div>
<script type="module" src="index.js"></script>
<script>
/* activate popovers */
const popoverTriggerList = [].slice.call(
document.querySelectorAll('[data-bs-toggle="popover"]'),
);
popoverTriggerList.map(
// bootstrap is used as script in the template, disable warning about undef
// eslint-disable-next-line no-undef
popoverTriggerEl =>
new bootstrap.Popover(popoverTriggerEl, {
trigger: 'hover',
placement: 'left',
content: document.getElementById(
popoverTriggerEl.getAttribute('data-bs-content'),
).innerHTML,
html: true,
}),
);
</script>
</body>
</html>{
"name": "color_adjustments",
"dependencies": {
"@giro3d/giro3d": "0.37.3"
},
"devDependencies": {
"vite": "^3.2.3"
},
"scripts": {
"start": "vite",
"build": "vite build"
}
}