Changing the map behavior when it is moved in Leaflet

I am currently using Leaflet to design a map that includes a personalized sound layer. Each tile on the map features an <audio> element, and I am exploring methods to adjust the audio playback as the user navigates around the map (specifically by modifying the volume according to the distance from the center).

At this point, I have identified the move event on the map object, but I am curious if there is a way to relay this event to my customized grid layer and then to the individual tiles - can a tile be programmed to respond to an event like this?

It could be possible that my approach should involve creating a specialized Handler instead - perhaps I need to reconsider my strategy.

Answer №1

If you're looking for another method, consider utilizing this library: . You can create a grid that covers the entirety of your map, adjusting the cell size to match the tiles for seamless interaction.

// Setting up map configuration
let config = {
  minZoom: 1,
  maxZoom: 18,
};
// Initial zoom level of the map
const zoom = 18;
// Coordinates
const lat = 52.22977;
const lng = 21.01178;

// Creating the map
const map = L.map("map", config).setView([lat, lng], zoom);

// Loading and displaying tile layers on the map
// Most tile servers require attribution, which you can set under `Layer`
L.tileLayer("https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png", {
  attribution:
    '&copy; <a href="https://www.openstreetmap.org/copyright">OpenStreetMap</a> contributors',
}).addTo(map);

// ------------------------------
const bbox = [17, 54, 23, 50];
const cellSide = 50;
const options = { units: "kilometers" };

const squareGrid = turf.squareGrid(bbox, cellSide, options);

//Adding to Map
const addToMap = [squareGrid];

const gridLayers = L.geoJSON(addToMap, {
  onEachFeature: function (feature, layer) {
    layer.on("mouseover", function (e) {
      // show region

      this.setStyle({
        fillColor: "#eb4034",
        weight: 2,
        color: "red",
        fillOpacity: 0.7,
      });
    });
    layer.on("mouseout", function () {
      this.setStyle({
        fillColor: "#3388ff",
        weight: 2,
        color: "#3388ff",
        fillOpacity: 0.2,
      });
    });
  },
}).addTo(map);

map.setView(gridLayers.getBounds().getCenter(), 7);
*,
:after,
:before {
  box-sizing: border-box;
  padding: 0;
  margin: 0;
}

html {
  height: 100%;
}

body,
html,
#map {
  width: 100%;
  height: 100%;
}

body {
  position: relative;
  min-height: 100%;
  margin: 0;
  padding: 0;
  background-color: #f1f1f1;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/Turf.js/6.5.0/turf.min.js"></script>
<script src="https://unpkg.com/<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="056960646369607145342b322b34">[email protected]</a>/dist/leaflet.js"></script>
<link href="https://unpkg.com/<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="c0aca5a1a6aca5b480f1eef7eef1">[email protected]</a>/dist/leaflet.css" rel="stylesheet"/>
<div id="map"></div>

Another option is to utilize FeatureCollections with specific layers to incorporate various attributes like sound or color, triggering different actions upon clicks or hover events.

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