Feature Request: More Zoom!

[chrisl8]

I would like either the maximum zoom to be increased or to be configurable. I often want to zoom in further than allowed, but the max is hard coded to 19. I'm not sure what it should be, maybe that is a good default, but I have been setting it to 25 myself.

[Freika]

Not all maps layers support closer zoom (read: has that detailed tiles) but I'll have look if I can increase it for some of them

[chrisl8]

I don't think it matters if the map itself doesn't support the zoom level, it just goes to a blank field. The point is to zoom in enough on points to be able to differentiate them and click on them.

[Freika]

It's not entirely correct. Here is an example:

1map-layers-example-2024-09-30.18.33.10.mov

Basically, if you zoom close enough, and then switch to a layer that does not support this zoom level, Leaflet won't allow you to switch layers. And if you manage to switch it anyway, it will show you a gray background instead of map tiles, because there are none for this level of zoom.

[chrisl8]

Ah, interesting. I don't think I tried zoom 25 when all of those map options existed. I'll go back and try it again and see what results I get.

[chrisl8]

Here is an example of what I'm referring to. At the default max zoom level of 19, I cannot get close enough to find the point that is making that crazy line come in from the upper left. The points are just overlapping.

If I set the maxZoom to 24 though, I can zoom right in there and find it.

dawarich/app/javascript/maps/layers.js

Line 7 in e755d21

maxZoom: 19,

I see what you mean though about how it breaks switching between maps.

However, you already have this issue in the existing code. I see you have the max zoom set to different levels for the different maps. So, for example, if I zoom in fully on the OPNV map which has maxZoom of 18, I cannot select the openTopo map which has maxZoom set to 17.

dawarich/app/javascript/maps/layers.js

Line 35 in e755d21

maxZoom: 18,

dawarich/app/javascript/maps/layers.js

Line 49 in e755d21

maxZoom: 17,

I guess the code needs some more "smarts" to help it to "un-zoom" when switching maps.

[Freika]

The video I attached above represents state of the map with maxZoom attribute set to 19 for all map layers.

But I got your idea, and I'll see of I can bypass Leaflet's behaviour and zoom closer with the latest tiles even if it would mean having blurry tiles.