Feature Suggestion: Flip

[Treemanhero98]

I would like to suggest a feature which mirrors (vertical or horizontal) selected structures, especially buildings.
Is this possible to implement it into the editor?

[bhousel]

Yes, definitely possible. Flip Horizontal / Flip Vertical are tools that people are accustomed to seeing, from working with other vector drawing tools. This is not a priority for iD, but I'll leave this open as a "maybe someday".

[slhh]

I don't see a real usecase of flipping existing objects, but in case of copying objects flippng could be useful. Some keys could have a special function in order to flip, rotate, or scale the copied object in the period between pressing Ctrl-V and placing the copied object by mouse click.

[bhousel]

Yes, the main usecase would be for copy/pasting of symmetrical building outlines.

[bhousel]

This was done in #3375 (thanks @Psigio!)
Try it out in the mirror: http://openstreetmap.us/iD/master