Add a generated icon to the map
Add an icon to the map that was generated at runtime.
<!DOCTYPE html><html><head><meta charset="utf-8" /><title>Add a generated icon to the map</title><meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no" /><script src="https://cdn.jsdelivr.net/npm/@goongmaps/goong-js@1.0.9/dist/goong-js.js"></script><link href="https://cdn.jsdelivr.net/npm/@goongmaps/goong-js@1.0.9/dist/goong-js.css" rel="stylesheet" /><style> body { margin: 0; padding: 0; } #map { position: absolute; top: 0; bottom: 0; width: 100%; }</style></head><body><div id="map"></div> <script>goongjs.accessToken = '8qzxZAuxcsctSlmOszInchP1A5GrmRBHJwCBCjO6';var map = new goongjs.Map({container: 'map',style: 'https://tiles.goong.io/assets/goong_map_web.json',center: [105.8351, 21.02917],zoom: 14}); map.on('load', function () {var width = 64; // The image will be 64 pixels squarevar bytesPerPixel = 4; // Each pixel is represented by 4 bytes: red, green, blue, and alpha.var data = new Uint8Array(width * width * bytesPerPixel); for (var x = 0; x < width; x++) {for (var y = 0; y < width; y++) {var offset = (y * width + x) * bytesPerPixel;data[offset + 0] = (y / width) * 255; // reddata[offset + 1] = (x / width) * 255; // greendata[offset + 2] = 128; // bluedata[offset + 3] = 255; // alpha}} map.addImage('gradient', { width: width, height: width, data: data }); map.addSource('point', {'type': 'geojson','data': {'type': 'FeatureCollection','features': [{'type': 'Feature','geometry': {'type': 'Point','coordinates': [105.8351, 21.02917]}}]}});map.addLayer({'id': 'points','type': 'symbol','source': 'point','layout': {'icon-image': 'gradient'}});});</script> </body></html>