Setting up measurements in WebViewer

When creating a new instance of WebViewer, the enableMeasurement property needs to be set to true to display the measurement annotation tools in the UI

1WebViewer({
2  ... // other options
3  enableMeasurement: true
4}, viewerElement);

Besides passing in a constructor option, measurement can be toggled using the WebViewer API with the enableFeatures and disableFeatures functions.

1WebViewer({
2  ... // other options
3}, viewerElement)
4  .then(instance => {
5    instance.UI.enableFeatures([instance.Feature.Measurement]);
6  });

1WebViewer({
2  ... // other options
3}, viewerElement)
4  .then(instance => {
5    instance.enableFeatures([instance.Feature.Measurement]);
6  });