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Constraints next to eachother (by Peter)
Great software,
These are some of my findings/suggestions.

* 0 distance between shapes

I guess this one can be numerical complicated but if some special constraint could make it possible.
It works in the first sketch phase but with a warning, when extruding it never gets solid.

* distance between parallell lines

Eventually I found out I could select a line and a point to get what I wanted.
When two lines are parallel(or both V/H) then a distance constraint between them could be possible.

* Toolbar hint

To many times I have tested over and over again trying to understand which constraint to use.
I suggest that the toolbar indicated which constraints are possible given the selected nodes/edges.
The dialog box with the explanation could still popup if clicking the inactive ones.
Tue Oct 25 2016, 07:37:20
(no subject) (by whitequark)
> * 0 distance between shapes
> It works in the first sketch phase but with a warning, when extruding it never gets solid.

> * distance between parallell lines
> Eventually I found out I could select a line and a point to get what I wanted.
> When two lines are parallel(or both V/H) then a distance constraint between them could be possible.

But what would such a constraint do if the lines stop being parallel?

> * Toolbar hint
> To many times I have tested over and over again trying to understand which constraint to use.
> I suggest that the toolbar indicated which constraints are possible given the selected nodes/edges.

Yeah, this has already been requested: https://github.com/whitequark/solvespace/issues/117. I'll see what I can do, though it's not a priority.
Tue Oct 25 2016, 07:56:58
(no subject) (by Ion Apostol)
Distances between two paralele lines not working !
Tue Jun 23 2020, 11:08:13
(no subject) (by Tom)
I don't think SolveSpace has a distance between two parallel lines constraint? You can do point to line distance (doesn't matter what endpoint you choose when the lines are parallel) and that works for me.
Tue Jun 23 2020, 11:47:36
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