Opened 10 years ago

Closed 10 years ago

#2434 closed enhancement (wontfix)

Enable Potlatch to zoom to zoom level 21

Reported by: lakeyboy Owned by: richard@…
Priority: major Milestone:
Component: potlatch (flash editor) Version:
Keywords: Cc:


Over in Australia, we have recently been blessed with new CC-BY-SA high resolution imagery which we can trace over, provided by NearMap?. While this imagery is good, because it is of such high resolution, more precision is required when editing it and at the moment, Potlatch's zoom level limit of 19 decreases the accuracy of editing when doing things like building outlines, fences, pathways etc. Thanks.

Change History (1)

comment:1 Changed 10 years ago by Richard

Resolution: wontfix
Status: newclosed

I'm afraid this isn't possible in the current Potlatch codebase. Potlatch uses a fixed co-ordinate system across all zoom levels - i.e. a screen co-ordinate at zoom level 17 is the same as the same screen co-ordinate at zoom level 14.

Unfortunately, this means that when you get to zoom 19, the accuracy is actually limited by the resolution of Flash Player's co-ordinates. Adding zoom level 20 wouldn't give any more accuracy; co-ordinates would simply be aligned to an invisible grid.

Potlatch 2 starts a new co-ordinate system on every zoom in/out so won't have a problem with this.

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