Add an animated icon to the map
Add an animated icon to the map that was generated at runtime with the Canvas API. Requires Trimble Maps v3.0.0 or later.
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8" />
<title>Add Image Animated</title>
<meta name="viewport" content="width=device-width, initial-scale=1" />
<link rel="stylesheet" href="https://maps-sdk.trimblemaps.com/v4/trimblemaps-4.2.3.css" />
<script src="https://maps-sdk.trimblemaps.com/v4/trimblemaps-4.2.3.js"></script>
<style>
body {
margin: 0;
padding: 0;
}
html,
body,
#map {
height: 100%;
}
</style>
</head>
<body>
<div id="map"></div>
<script>
TrimbleMaps.setAPIKey('YOUR_API_KEY_HERE');
const map = new TrimbleMaps.Map({
container: 'map',
zoom: 5,
style: TrimbleMaps.Common.Style.TRANSPORTATION,
});
const size = 200;
// implementation of StyleImageInterface to draw a pulsing dot icon on the map
// Search for StyleImageInterface in https://developer.trimblemaps.com/maps-sdk/api/
const pulsingDot = {
width: size,
height: size,
data: new Uint8Array(size * size * 4),
// get rendering context for the map canvas when layer is added to the map
onAdd() {
const canvas = document.createElement('canvas');
canvas.width = this.width;
canvas.height = this.height;
this.context = canvas.getContext('2d');
},
// called once before every frame where the icon will be used
render() {
const duration = 1000;
const t = (performance.now() % duration) / duration;
const radius = (size / 2) * 0.3;
const outerRadius = (size / 2) * 0.7 * t + radius;
const context = this.context;
// draw outer circle
context.clearRect(0, 0, this.width, this.height);
context.beginPath();
context.arc(
this.width / 2,
this.height / 2,
outerRadius,
0,
Math.PI * 2
);
context.fillStyle = 'rgba(255, 200, 200,${1 - t})';
context.fill();
// draw inner circle
context.beginPath();
context.arc(this.width / 2, this.height / 2, radius, 0, Math.PI * 2);
context.fillStyle = 'rgba(255, 100, 100, 1)';
context.strokeStyle = 'white';
context.lineWidth = 2 + 4 * (1 - t);
context.fill();
context.stroke();
// update this image's data with data from the canvas
this.data = context.getImageData(0, 0, this.width, this.height).data;
// continuously repaint the map, resulting in the smooth animation of the dot
map.triggerRepaint();
// return `true` to let the map know that the image was updated
return true;
},
};
map.on('load', () => {
map.addImage('pulsing-dot', pulsingDot, {pixelRatio: 2});
map.addSource('points', {
type: 'geojson',
data: {
type: 'FeatureCollection',
features: [
{
type: 'Feature',
geometry: {
type: 'Point',
coordinates: [0, 0],
},
},
],
},
});
map.addLayer({
id: 'points',
type: 'symbol',
source: 'points',
layout: {
'icon-image': 'pulsing-dot',
},
});
});
</script>
</body>
</html>
Add an animated icon to the map
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8" />
<title>Add Image Animated</title>
<meta name="viewport" content="width=device-width, initial-scale=1" />
<link rel="stylesheet" href="https://maps-sdk.trimblemaps.com/v4/trimblemaps-4.2.3.css" />
<script src="https://maps-sdk.trimblemaps.com/v4/trimblemaps-4.2.3.js"></script>
<style>
body {
margin: 0;
padding: 0;
}
html,
body,
#map {
height: 100%;
}
</style>
</head>
<body>
<div id="map"></div>
<script>
TrimbleMaps.setAPIKey('YOUR_API_KEY_HERE');
const map = new TrimbleMaps.Map({
container: 'map',
zoom: 5,
style: TrimbleMaps.Common.Style.TRANSPORTATION,
});
const size = 200;
// implementation of StyleImageInterface to draw a pulsing dot icon on the map
// Search for StyleImageInterface in https://developer.trimblemaps.com/maps-sdk/api/
const pulsingDot = {
width: size,
height: size,
data: new Uint8Array(size * size * 4),
// get rendering context for the map canvas when layer is added to the map
onAdd() {
const canvas = document.createElement('canvas');
canvas.width = this.width;
canvas.height = this.height;
this.context = canvas.getContext('2d');
},
// called once before every frame where the icon will be used
render() {
const duration = 1000;
const t = (performance.now() % duration) / duration;
const radius = (size / 2) * 0.3;
const outerRadius = (size / 2) * 0.7 * t + radius;
const context = this.context;
// draw outer circle
context.clearRect(0, 0, this.width, this.height);
context.beginPath();
context.arc(
this.width / 2,
this.height / 2,
outerRadius,
0,
Math.PI * 2
);
context.fillStyle = 'rgba(255, 200, 200,${1 - t})';
context.fill();
// draw inner circle
context.beginPath();
context.arc(this.width / 2, this.height / 2, radius, 0, Math.PI * 2);
context.fillStyle = 'rgba(255, 100, 100, 1)';
context.strokeStyle = 'white';
context.lineWidth = 2 + 4 * (1 - t);
context.fill();
context.stroke();
// update this image's data with data from the canvas
this.data = context.getImageData(0, 0, this.width, this.height).data;
// continuously repaint the map, resulting in the smooth animation of the dot
map.triggerRepaint();
// return `true` to let the map know that the image was updated
return true;
},
};
map.on('load', () => {
map.addImage('pulsing-dot', pulsingDot, {pixelRatio: 2});
map.addSource('points', {
type: 'geojson',
data: {
type: 'FeatureCollection',
features: [
{
type: 'Feature',
geometry: {
type: 'Point',
coordinates: [0, 0],
},
},
],
},
});
map.addLayer({
id: 'points',
type: 'symbol',
source: 'points',
layout: {
'icon-image': 'pulsing-dot',
},
});
});
</script>
</body>
</html>