There is now a new "layer alignment" tool in HEAD, whose function is to align layers with other layers in various ways. It should show up in the toolbox by default. The functionality can probably be discovered by looking at the tool options and playing around, but here is a quick overview. To use the tool, first activate it, then control-click on a nontransparent part of some layer to make it the "reference layer". Click on some other layer (without holding down Control) to make it the target layer. Press one of the six buttons in the tool options to cause the target layer to shift into alignment with the reference layer --- the type of alignment is indicated by the symbol on the button.

If no reference layer is specified, then the target layer is aligned with respect to the image as a whole.

For future development, I intend to make this work with guides, selections, and paths, but currently it just works on ordinary layers. Also for future development, it may ultimately make sense to merge this functionality into the Move tool, but it is more convenient to keep it separate for the moment.

Criticisms and suggestions for improvement are welcome.

-- Bill

(Bug #147437 shows the development history for this.)

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