Exploring the Possibilities of OpenLayers with Scalable Vector

Trying to create a webpage with an image that can be navigated using drag and scroll events, similar to Google Maps. Instead of building it from scratch, I attempted to achieve this using OpenLayers, with the intention of using the image in place of a map. I have researched examples on stackoverflow, but I am still struggling to figure out how to set the image as the first layer. Here is my current approach:

testOL(content: string) {
// content is the svg as string
this.map = new Map({
  target: 'imageArea',
  layers: [
    new Image({
      source: new ImageStatic({
        src: content,
      })
    })
  ] ,view : new View({
    center: [0,0],
    zoom: 1
  }) 
})
}

The target is a plain div with no content.

I have attempted to use a URL to an SVG as the image source, as well as adding a Projection and a View to the map, but neither worked. Any help on this issue would be greatly appreciated.

Answer №1

src attribute is incorrect, it should be url, with the value being a data URL. Additionally, the ImageStatic requires the imageExtent to be specified in projection coordinates.

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8"/>
    <link rel="stylesheet" href="https://openlayers.org/en/v6.4.3/css/ol.css" type="text/css">
    <script src="https://openlayers.org/en/v6.4.3/build/ol.js"></script>
    <style>
      html, body, .map {
        margin: 0;
        padding: 0;
        width: 100%;
        height: 100%;
      }
    </style>
</head>
<body>
<div id="imageArea" class="map"></div> 
...
...

   </script>
</body>
</html>

Answer №2

Customize your point feature style using an SVG string:

var svgStringContent = '<?xml version="1.0" ...><svg>...</svg>'; // Your SVG content as a string
var customStyle = new ol.style.Style({
    image: new ol.style.Icon({
      anchor: [16, 48],
      anchorXUnits: 'pixels',
      anchorYUnits: 'pixels',
      src: 'data:image/svg+xml,' + encodeURIComponent(svgStringContent) // Add the encoded SVG string as the image source
    }),
  });

feature.setStyle(customStyle);

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