QuadtreePrimitive for POIs LOD

Hello,

I would like to implement a LOD mechanism to display vector POIs.
The density of POIs should be high near the camera and decreasing with
the distance: far POIs should be aggregated.

Would using a QuadtreePrimitive to create Billboards /
BillboardCollections on the fly makes sense?
Have someone tried this strategy / have some performance numbers?
The QuadtreePrimitive is currently private, will it change in the future?

Cheers,

Hi,

That’s a reasonable use-case for the QuadtreePrimitive. BillboardCollection may not be ideal, because BillboardCollection is designed to handle changing billboards, and the set of billboards in a QuadtreeTile will be created once and never touched again. Unfortunately Cesium doesn’t have anything better for billboards currently, as far as I know.

We’re reserving the right to change QuadtreePrimitive in the future (that’s why it’s private), but we don’t have any near-term plans to do so.

Kevin

Hello,

Thank you Kevin for the insights; I will have a try.

Guillaume

Hi,
I’ve started tackling the QuadTreePrimitive lately, with some issues.
Did you pursue this venue?

Hi,

Not yet started. What did you run into?

Since I have only a few tens of thousand POIs, I will first try filtering
them out at the shader level.

Guillaume