ol.layer.VectorTile clips labels on tile boundary?

[aAXEe]

I'm using Mapzen vector tiles for a map.
ol.layer.VectorTile clips my labels at the tile boundaries instead of drawing them completely:

Full example: https://jsfiddle.net/rn3qc4ca/

As the mapbox vector example is basically the same (and works as expected) I have no idea that the problem is.

Note: I am using the MVT format in the example. Using TopoJSON or GeoJSON results in the same problem.

This question might be about the same problem: http://stackoverflow.com/questions/40234804/ol3-geoserver-vector-tile-labels-gets-cropped/

[ahocevar]

The Mapbox tiles in the mapbox-vector-tiles.html example repeat label points on neighbouring tiles with a dynamic buffer, depending on the expected label size. Mapzen tiles don't do that.

That said, the problem is with the tiles you are loading, not OpenLayers rendering them.

[aAXEe]

Thanks a lot for that description!

[pksorensen]

I wrote my own tiling algorithm that creates vector tiles, but I fail to see how I should create the auxiliary label points.

Lets say I detect if they are close to the border, then i could create a label point in the tile next to it, but I dont see how I will ever get the styles to line up such the text from both tiles are drawn so they look like one label. ? can I read about this somewhere?

[pksorensen]

sorry, I understand it now. The buffer of the tiles makes up for this. So the buffer should be large enough such the point is in the same location.