Curve booleans with open curves have proved to be pretty challenging, but I'm getting there.. Just finished difference. (note that this is for the next beta, not the current one).

Given this initial setup, with a grid of simple line segments and a closed region:



Doing a boolean difference with lines difference closed region gives this:



Basically just automatic trimming of the lines.

But somewhat more interesting is the closed region difference the lines:



This takes the lines and sort of imprints them into the closed region to form a bunch of new diced up closed regions (shown slightly separated for illustration).

Still have a some work left to do on the other operators for open curves though.

- Michael