Line is not curved from the source to the destination point

Hi all
I have a task which I want to create an animation line which travels from the source to the destination point. So I create 3 entities which are the animation line, source point and destination point.

When running the html file, the output show a line which travels from the source to the destination point. However, the line is not smooth curve.

My code is shown below.

Hello World! @import url(../Build/Cesium/Widgets/widgets.css); html, body, #cesiumContainer { width: 100%; height: 100%; margin: 0; padding: 0; overflow: hidden; }

Can you please help me? Thank you.

You need to change the sampling resolution of the path. The default is 60 seconds, but since your duration is only 5 seconds you’ll need to make it finer. A value of 0.1 seconds looked pretty smooth.

Scott