ImageRenderer and scale between 1 and 4 about dart-vector-tile-renderer HOT 3 CLOSED

Hey thanks for the issue! Looking back at the commit that introduced the restriction, it looks like I put it there as an arbitrary sanity check. Likely we had no use-case for having a scale > 4. Feel free to issue a PR to relax the constraint!

I'm really interested to hear more about your use-case and how using this library directly instead of vector_map_tiles improves performance. If you have a repo demonstrating improvements I'd love to see it!

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At this moment I cannot provide a repo, but basically we cached the generated tiles as standard png and served them directly since the second request. Since we have a complete control on the tile request, with this method we can also mixed both local and remote loading (so from a local mbtiles repository or from traditional raster tile sever). I know that with this method the storage usage is extremely increased, but in some situation, as a specific app for some specific devices, this is not a problem.

I also noticed that there are some other asserts in the tile_model.dart file. A couple of times, I see an exception thrown by these asserts (unfortunately I can't provide you steps to reproduce the problem, since it hasn't happen in a systematic way). This problem caused a "gray" rendered tile, of course. Maybe, also in this case, it is possible to "relax" this assertions and, at least, provide a partially rendered tile (maybe without all of the intended details), that's probably better than nothing! Anyway, I will try to investigate on this problem.

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Closing since this issue is stale. We can reopen if/when needed.

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