Request : Add Built-in Marker Transitions

[misterfresh]

Feature Request:
In markers we should be able to set two properties in the point's geojson: nextPosition and timeToTransition :

• nextPosition is a coordinates array
• timeToTransition is a time in milliseconds
  And then when I do source.setData with a feature collection, it will transition the markers automagically.
  In this way I only have to do setData one time per second and not 30 times per second, and the update can be done in webgl and not js which I suppose would be faster
  Maybe add a third property like transitionStyle (for example 'ease-in' or 'linear').
  That would be a killer feature.

[lucaswoj]

Thanks for the feature request @misterfresh!

In this way I only have to do setData one time per second and not 30 times per second, and the update can be done in webgl and not js which I suppose would be faster

This would not be possible without a significant refactoring of our codebase. We have decided to make setData the primitive for animation. There is an ongoing effort to make setData more efficient in #1391 and #1504.