KmlDataSource Problem

CesiumJS
1

Hi...
I was trying to add my KML data to the globe using this codes :

var kmlDataSource = new Cesium.KmlDataSource();
kmlDataSource.loadUrl('http:\\pathToKml');
viewer.dataSources.add(kmlDataSource);

My KML data and the globe cannot show

My fire bug detects something like this :

TypeError: Cesium.KmlDataSource is not a constructor

Do I need to get external javascript file like KmlDataSource.js?
(I have read one topic in a google gropus forum that someone parsed his codes to the forum about KmlDataSource)
But I haven't found it in thirdparty folder or anywhere

I use Cesium ver 1.4

Can somebody help me here please...?

Thanks very much

2

KML support is not part of any official Cesium release yet but is being worked on in the KML branch. I plan on starting to post beta builds for people to play with soon (since so many people have been trying to build it from source). Expect a post to the forum as early as tomorrow.