Re: [josm-dev] Geometric calculations and projections

2009-12-08 Thread Tobias Wendorff
Am Di, 8.12.2009, 08:51 schrieb Frederik Ramm: The circle might not look like a real circle on your screen but believe us it is a circle! ;-) Exactly. I recommend everyone to use the new UTM projection, since it's exemely useful for most of our (micro-) mapping.

Re: [josm-dev] Geometric calculations and projections

2009-12-08 Thread Robert Scott
On Tuesday 08 December 2009, Matthias Julius wrote: What do you think? It's funny you should say this - I am currently working on a few things such as some proper geometry operations. It started with me doing some work on the extrude function and realizing it should really be able to work in

Re: [josm-dev] Geometric calculations and projections

2009-12-08 Thread Matthias Julius
Frederik Ramm frede...@remote.org writes: Hi, Matthias Julius wrote: IMHO, all those calculations should ideally be done using great circles. I agree, but having implemented things like the (initial version of) the make rectangular function, which was difficult enough the way it is, I

Re: [josm-dev] Geometric calculations and projections

2009-12-08 Thread Dirk Stöcker
On Tue, 8 Dec 2009, Matthias Julius wrote: Ah, you mean that these calculations should always be based on a Mercator transformation even if you have something else selected. Yes, Mercator or whatever is deemed the best approximation to reality for a particular operation. Mercator might be

Re: [josm-dev] Geometric calculations and projections

2009-12-08 Thread Matthias Julius
Robert Scott li...@humanleg.org.uk writes: On Tuesday 08 December 2009, Matthias Julius wrote: What do you think? It's funny you should say this - I am currently working on a few things such as some proper geometry operations. It started with me doing some work on the extrude function and

Re: [josm-dev] Geometric calculations and projections

2009-12-08 Thread Robert Scott
On Tuesday 08 December 2009, Matthias Julius wrote: I guess local cartesian coordinates would be the best for things like orthogonalize since that's the way buildings are built. But, in practice, using Mercator should be close enough for real world building sizes. Close enough maybe, but I

Re: [josm-dev] Geometric calculations and projections

2009-12-08 Thread Matthias Julius
Robert Scott li...@humanleg.org.uk writes: On Tuesday 08 December 2009, Matthias Julius wrote: In other words: if the current projection makes circles look like eggs then I would expect this to be true for both the imagery and the circles created by AlignInCircleAction. Yes, I understand

Re: [josm-dev] Geometric calculations and projections

2009-12-08 Thread Robert Scott
On Tuesday 08 December 2009, Tobias Wendorff wrote: I did the same, aprox. a year ago, but I don't have a clue, how to implement it in JAVA. Neither did I. I'm a c++ programmer, I just dived straight in. It's pretty straightforward, but painfully long-winded in areas for a higher-level

Re: [josm-dev] JOSM is the editor with the best user retention

2009-12-08 Thread Paul Johnson
Dirk Stöcker wrote: On Mon, 7 Dec 2009, Frederik Ramm wrote: interesting post by Matt on this blog: http://www.asklater.com/matt/wordpress/2009/12/editor-retention/ He arrives at the result that JOSM users are the ones most likely to stay with their editor. (Well... what else is

Re: [josm-dev] JOSM is the editor with the best user retention

2009-12-08 Thread Lennard
Paul Johnson wrote: created_by= tags get stomped by Potlatch, JOSM leaves it alone if it's already set (unless, of course, a JOSM user deliberately deletes the existing created_by tags). This would give severely skewed results in favor of Potlatch. You would be correct, if you would've said