> Ok, wart city. > > Why is it 'Edit|Move selected to current layer' for > some things and > 'Select|Move selected elements to other side' for > elements? > > Why is there "moving to layer", "mirror" and "flip"? > > Why is mirror only for things buffers, moving only > for lines and text > and flip only for elements?
Conceptually components only exist on the surface layers, much like the silkscreen. Interestingly I recently designed a circuit at work that required "buried" components, so I can see that there is the very rare need to do this. But I think your question is more along the lines of "why are their differening commands?" since I doubt you are trying to bury a component. The short answer is because pcb can't handle buried components and therefore components are either on the top or bottom, and they must be mirror imaged to be on the bottom, so that's why they have a special command - it goes to the layer you want (i.e. the other surface) without your having to be working on that layer, and it auto-mirror as it must. It works with a single keystroke so it's pretty easy to use regardless of what layer you're on. It is very rare that traces etc. should be mirrored and usually you want a whole group mirrored, so we haven't provided a convenience function for doing that outside a buffer, but it would be trivial to implement; back before the hid was introduced single key macros were really easy to implement (they still are with lesstif) and you could easily make a key macro to mirror one single object on the board. Traces (lines and arcs), and polygons can be on any layer so they have a move-to-layer function. If you're trying to move a whole layout region from front to back of your board, trying cutting the region to a buffer, then *view* the opposite side of the board and paste. Viola' everything is done for you. It wouldn't be too hard to have some special-case code for the move-to-layer function to check if you've tried to perform it on an element, and if you have and the layer is a surface layer then perform the flip instead. You should write it. h. ____________________________________________________________________________________ Any questions? Get answers on any topic at www.Answers.yahoo.com. Try it now. _______________________________________________ geda-user mailing list [email protected] http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
