Dynamic Buffers

[pjcozzi]

Still in progress.

Support fast dynamic geometry with appearances. This is the dynamic version of #766 and a generic implementation of the BillboardCollection's buffer management.

Use cases

• Add one position to end of a polyline. Add n positions to the end. Add 1-n positions to the end of m polylines.
• Change one point in a polyline to track a moving object.
• Update the positions only of all billboards.
• Color-ramp/size based on age of point in polyline. Can probably be done completely in the vertex shader.
• 3D object-editing one geometry in a batch of geometries.
• ...

Implementation

• [ ] Automatically pack attributes based on semantics/metadata, i.e., group attributes with the same update frequency together.
• [ ] Automatically compress attributes based on semantics/metadata. #419

[je-an]

Regarding to http://cesiumjs.org/2017/05/24/Upcoming-Summer-Code-Sprint/ This would be my choice :)

[pjcozzi]

Thanks for the input, @je-an! This scope is too big for the sprint. :disappointed:

[je-an]

Hey Patrick, thanks for your response. Could you tell me, if the team have plans to implement this feature in the near future, respectively if it is on the near future roadmap ?! Thank you :)

[pjcozzi]

We don't have short-term plans for this; we have our hands full with 3D Tiles right now.

[jakeflorentine]

Do we have a current plan/timeline for this issue?

[OmarShehata]

@jakeflorentine We don't have a timeline for this at the moment. Feel free to make a post on the Cesium community forum (https://community.cesium.com/) if you have performance questions. There may be things you can do to speed up your app depending on what you're doing.

[ggetz]

Dynamic polygon performance improvement requested in https://github.com/CesiumGS/cesium/issues/10946.