> How do you feel about "drill-in" mode for composite curves?

Hi Petr, I would like to do something for this eventually. But when I was looking at it originally, it involved enough work that I decided to postpone it a while.

It's more than just selection work, for example you mention delete - to make delete work in this way would require modifications to delete. Similarly many commands might need to be tweaked to deal with this kind of input (curve segment selected instead of full curve selected). So that adds up to a fair amount of work which made it a good candidate to postpone from the V1 release.

There are a couple of other complications too - one thing is that it is a bit hard to think of a good way to represent this drill-in graphically. I mean what should I do to make it look like the segment is going to become the only selection with an additional click? I guess put a dark halo around all the other segments? This would have a pretty large visual impact on the way that curve selection works now. And it would mean that curve deselection would take 2 clicks instead of the 1 click to deselect as currently.

So one thing I've thought about is to not have a drill-in method for segment selection and instead have that as one of the available filter modes when selection filters are available. The way that would work is you would have the curve unselected, then set the filter mode to segment. Now when you picked on the curve it would only pick segments of the curve instead of the full curve. I was thinking this might be less generally disruptive. But then you have to remember to switch the filter mode back to "auto" or whatever when you are finished.

What do you think?

- Michael