Add / Remove
?Toggling a layer removes / adds it to the map.
Add and remove layers in a Map.
Use the addLayer() and removeLayer() methods to add and remove layers in a Map.
import { Vector3 } from "three";
import { MapControls } from "three/examples/jsm/controls/MapControls.js";
import Extent from "@giro3d/giro3d/core/geographic/Extent.js";
import Instance from "@giro3d/giro3d/core/Instance.js";
import ColorLayer from "@giro3d/giro3d/core/layer/ColorLayer.js";
import Map from "@giro3d/giro3d/entities/Map.js";
import Inspector from "@giro3d/giro3d/gui/Inspector.js";
import WmtsSource from "@giro3d/giro3d/sources/WmtsSource.js";
import ElevationLayer from "@giro3d/giro3d/core/layer/ElevationLayer.js";
import BilFormat from "@giro3d/giro3d/formats/BilFormat.js";
function bindToggle(id, onChange) {
const element = document.getElementById(id);
if (!(element instanceof HTMLInputElement)) {
throw new Error(
"invalid binding element: expected HTMLButtonElement, got: " +
element.constructor.name,
);
}
element.oninput = function oninput() {
onChange(element.checked);
};
const callback = (v) => {
element.checked = v;
onChange(element.checked);
};
return [callback, element.checked, element];
}
Instance.registerCRS(
"EPSG:2154",
"+proj=lcc +lat_0=46.5 +lon_0=3 +lat_1=49 +lat_2=44 +x_0=700000 +y_0=6600000 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs",
);
Instance.registerCRS(
"IGNF:WGS84G",
'GEOGCS["GCS_WGS_1984",DATUM["D_WGS_1984",SPHEROID["WGS_1984",6378137.0,298.257223563]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]]',
);
const extent = new Extent(
"EPSG:2154",
-111629.52,
1275028.84,
5976033.79,
7230161.64,
);
const instance = new Instance({
target: "view",
crs: extent.crs,
backgroundColor: "black",
});
const camPos = new Vector3(220295, 6810219, 409065);
instance.view.camera.position.set(camPos.x, camPos.y, camPos.z);
const controls = new MapControls(instance.view.camera, instance.domElement);
instance.view.setControls(controls);
controls.target.set(camPos.x, camPos.y + 1, 0);
const map = new Map({
extent,
backgroundColor: "gray",
maxSubdivisionLevel: 13,
hillshading: {
enabled: true,
zFactor: 8,
},
terrain: false,
});
instance.add(map);
const capabilitiesUrl =
"https://data.geopf.fr/wmts?SERVICE=WMTS&VERSION=1.0.0&REQUEST=GetCapabilities";
let layers = {};
WmtsSource.fromCapabilities(capabilitiesUrl, {
layer: "HR.ORTHOIMAGERY.ORTHOPHOTOS",
})
.then((orthophotoWmts) => {
const layer = new ColorLayer({
name: "orthophotos",
extent: map.extent,
source: orthophotoWmts,
});
layers["orthophotos"] = layer;
layer.userData.zOrder = 0;
map.addLayer(layer);
})
.catch(console.error);
WmtsSource.fromCapabilities(capabilitiesUrl, {
layer: "GEOGRAPHICALGRIDSYSTEMS.PLANIGNV2",
})
.then((planIgn) => {
const layer = new ColorLayer({
name: "plan",
extent: map.extent,
source: planIgn,
opacity: 0.2,
});
layers["plan"] = layer;
layer.userData.zOrder = 1;
map.addLayer(layer);
})
.catch(console.error);
WmtsSource.fromCapabilities(capabilitiesUrl, {
layer: "ELEVATION.ELEVATIONGRIDCOVERAGE.HIGHRES",
format: new BilFormat(),
noDataValue: -1000,
})
.then((elevationWmts) => {
const layer = new ElevationLayer({
name: "terrain",
extent: map.extent,
// We don't need the full resolution of terrain because we are not using any shading
resolutionFactor: 0.5,
minmax: { min: 0, max: 5000 },
noDataOptions: {
replaceNoData: false,
},
source: elevationWmts,
});
layers["terrain"] = layer;
map.addLayer(layer);
})
.catch(console.error);
function bindLayerToggle(layerName) {
bindToggle(layerName, (state) => {
if (state) {
map.addLayer(layers[layerName]);
} else {
map.removeLayer(layers[layerName]);
}
map.sortColorLayers((a, b) => a.userData.zOrder - b.userData.zOrder);
instance.notifyChange(map);
});
}
bindLayerToggle("terrain");
bindLayerToggle("plan");
bindLayerToggle("orthophotos");
Inspector.attach("inspector", instance);
<!doctype html>
<html lang="en">
<head>
<title>Add / Remove layers</title>
<meta charset="UTF-8" />
<meta name="name" content="add_remove_layers" />
<meta name="description" content="Add and remove layers in a Map." />
<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="view" class="m-0 p-0 w-100 h-100"></div>
<div
id="inspector"
class="position-absolute top-0 start-0 mh-100 overflow-auto"
></div>
<div class="side-pane-with-status-bar">
<div class="card">
<h5 class="card-header" style="width: 12rem">Add / Remove</h5>
<!-- tooltip -->
<span
class="badge bg-secondary position-absolute top-0 end-0 m-2"
data-bs-toggle="popover"
data-bs-content="tooltip"
>?</span
>
<p class="card-text d-none" id="tooltip">
Toggling a layer removes / adds it to the map.
</p>
<div class="card-body">
<fieldset>
<div class="form-check form-switch">
<input
class="form-check-input"
type="checkbox"
checked="true"
role="switch"
id="plan"
autocomplete="off"
/>
<label class="form-check-label" for="plan">Plan</label>
</div>
<div class="form-check form-switch">
<input
class="form-check-input"
type="checkbox"
checked="true"
role="switch"
id="orthophotos"
autocomplete="off"
/>
<label class="form-check-label" for="orthophotos"
>Orthophoto</label
>
</div>
<div class="form-check form-switch">
<input
class="form-check-input"
type="checkbox"
checked="true"
role="switch"
id="terrain"
autocomplete="off"
/>
<label class="form-check-label" for="terrain">Terrain</label>
</div>
</fieldset>
</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": "add_remove_layers",
"dependencies": {
"@giro3d/giro3d": "0.39.0"
},
"devDependencies": {
"vite": "^3.2.3"
},
"scripts": {
"start": "vite",
"build": "vite build"
}
}