Feature Level Animations

[popkinj]

User Story

When single or multiple features are updated with setFeatureState they should animate based on existing style expressions.

Rationale

• Currently style animations are supported at a layer level. This occurs when using setPaintProperty, however this effects all features in the layer.
• There is currently minimal transition support in MapLibre style expressions.
• I think it would be a very positive addition to Maplibre if the existing transitions would occur for both layer styling and dynamic state changes.

Impact

• Will no longer require multiple layers for animations based on filtering and custom logic
• A natural extension of the transition behavior that would hopefully make better sense within style expressions.

[HarelM]

Thanks for taking the time to write this! You are welcome to try and tackle this!