Dynamic DOM tile rendering

CesiumJS
1

Hi Folks, I am trying to implement a live map rendering with CesiumJS, which is served with XYZ url protocol plus a customized tile update check API call. (live map it’s rectangle & tile content are changing in the fly)
Initially i would have planned to implement it using exising ImageryProviders or TimeImageryProviders, but I found I couldn’t find a proper way to refresh (not reload all tilesets) the rectangle & rendered tiles when it changed… so i changed my mind and am trying to implement it using GroundPrimitives (by changing materials).
I am wondering if there is a more efficient way, in which I can take advantage of the existing tile rendering mechanism instead of doing it all over again (e.g. i have to do tiling myself while it has well-implemented tiling running right there.

Thanks.

2

Hi,
You can force ImageryProviders to reload tiles like:
viewer.imageryLayers._layers[0].imageryProvider._reload();

Reference taken from this post.

  • Regards
3

Thanks Jacky, I read the post, too. it’s supposed to be working but there are two issues here for my use case: 1. it refreshes all tiles displayed while I only want to update showing tiles whiches got updated (band width matters in my use case); 2. it’s an internal method not intended to be called directly… so its not perfect here.

4

I’m understanding the requirement and there should be any method in Cesium to reload desired tiles only But There are few more things you can try like TimeDynamicImagery , WMTS ImageryProvider which is also time dynamic. You can also try SingleTileImageryProvider.