Extend lines to spline while keeping coincidents.

[wayne_litherland]

Hi All

Is there a way to extend a set of lines to a curve/spline while keeping constraints between the lines.

the image on the left is what I am trying to do, extend all the lines to the arc and take the connected lines with them, but when I extend the lines the connected lines at the top lose their coincidents?

[MMcCall402]

Extend the lines to the curve and then apply the coincident constraints in a careful ordering such that the vertical lines are coincident with the curve and then the horizonal'ish lines are coincident with the ends of the vertical lines.  This works, but then there's the issue with the coincident constraint to the curve not extending to the next curve segment when the planks get wider than the extent of the first curve.

[wayne_litherland]

Thanks Mark, but I need to be able to move the lines horizontally anywhere along the curve and then extend when they are in position.

This will be a cutting guide for Tongue & Groove planks, when they are in position, the top lines will give me the correct cutting angle.

At the moment this has to be done manually and is very time consuming.

[j.palmeL29YX · Accepted solution]

The main hint: The curved shape (currently 2 arcs) must be ONE SINGLE SPLINE. Otherwise you will not be able to get the expected result. 

Attached a suggestion how that may be done. 

(Additional question: Do you really need always 2 vertical overlapping lines. I would prefer to delete one of them) . 

[wayne_litherland]

Hi Jurgen

That is perfect, as for the lines, I only need 1 vertical not 2, it was just the way I was initially building the planks.