viewerPerformanceWatchdogMixin(viewer, options)

A mixin which adds the PerformanceWatchdog widget to the Viewer widget. Rather than being called directly, this function is normally passed as a parameter to Viewer#extend, as shown in the example below.
Name Type Description
viewer Viewer The viewer instance.
options Object optional An object with properties.
Name Type Default Description
lowFrameRateMessage String 'This application appears to be performing poorly on your system. Please try using a different web browser or updating your video drivers.' optional The message to display when a low frame rate is detected. The message is interpeted as HTML, so make sure it comes from a trusted source so that your application is not vulnerable to cross-site scripting attacks.
var viewer = new Cesium.Viewer('cesiumContainer');
viewer.extend(Cesium.viewerPerformanceWatchdogMixin, {
    lowFrameRateMessage : 'Why is this going so <em>slowly</em>?'