[Plugin] Recurve

dedmin

I'm getting a bugsplat when trying to reverse a curve with more segments - like arc with 120 segments.

Diggsey

I've fixed the bug for large numbers of edges.

The algorithm used to use recursion to find a route through the edges and that cause a stack overflow. Now all the algorithms work using simple loops.

See the first post for v1.2

dedmin

@diggsey said:

I've fixed the bug for large numbers of edges.

The algorithm used to use recursion to find a route through the edges and that cause a stack overflow. Now all the algorithms work using simple loops.

See the first post for v1.2

Working fine now! Thanks!

dedmin

I noticed reversing an arc makes it curve - it is not arc anymore. Is that the way it works?

Diggsey

Yes, currently it only makes curves not arcs. The reverse curve command basically explodes the curve and then calls recurve on it in the opposite direction, so the arc information is lost in the process. I could try changing recurve so that it detects if the sequence of edges makes a perfect arc.

The problem is, there are some arcs that are almost impossible to recreate. If you create an arc and then draw a line through it, you get two arcs, neither of which can be drawn with the arc tool. Even changing the number of segments in them will change their shape irreversibly.

Alternatively, if there are SketchUp features which you need to use and only work on arcs, I could make them work with all curves.

dedmin

I see - thanks for the explanation. Just noticed this and wanted to be sure it is not a bug.

thomthom

@diggsey said:

Yes, currently it only makes curves not arcs. The reverse curve command basically explodes the curve and then calls recurve on it in the opposite direction, so the arc information is lost in the process. I could try changing recurve so that it detects if the sequence of edges makes a perfect arc.

why not just detect if you are exploding an arc?

Diggsey

That doesn't help solve the problem I mentioned though. The only way I know of to create an arc in sketchup is with Entities.add_arc, which is functionally equivalent to the arc tool. Arcs created by dividing another arc in two cannot be made this way. I would have to know the exact sequence of events which happened to create the arc in the first place to recreate it in the opposite direction.

utiler

@dedmin said:

I see - thanks for the explanation. Just noticed this and wanted to be sure it is not a bug.

What is the difference? I thought an arc was a curve.....

TIG

An 'Arc' IS a 'Curve'... BUT a 'Curve' is NOT necessarily an 'Arc'...
Also remember that 'Circles' [a special 'Arc' that's 360 degrees] and 'Polygons' are also types of 'Curve' - as is any bound-set-of-edges that has been made as a 'Curve' [e.g. a Bezier Curve or a 'Welded' Curve made from edges]...........

jeff hammond

probably my oldest plugin request has finally happened
weld with no dialog boxes.

a few suggestions (if you're open to it, of course)

say i have two lines with an arc fillet connecting them and i'd like to make them all a single polyline (ie- something i do a lot with weld.rb), the recurve function won't work (or it doesn't appear in the context menu).. in order to recurve that scenario, i have to first explode the arc (or any polyline segments) prior to being able to recurve.

it'd be nice if i could weld a combination of edges/lines with curves (or arcs,polylines,etc.. what ever you want to call them ) using recurve.

there's also a bit of weirdness in there as far as 'select curve' goes.. using the same scenario as above, if i right click on the arc fillet then the 'select curve' option doesn't show up.. but, if i right-click on either of the lines then 'select curve' does show up and if i choose it, all parts including the arc will be selected.

and taking that a step further, it'd be nice to have an option for 'select curve then recurve' (or whatever) so i could select a bunch of broken segments and weld them together in one operation..

ultimately, this will definitely replace weld for me as my W shortcut and the last request would be assigned to ⇧W .

thanks a bunch!

kyyu

@unknownuser said:

probably my oldest plugin request has finally happened
weld with no dialog boxes.

I never liked the 2 dialog boxes, either. Always answered "no". So I commented they out, in my modified version.

mmscanlo

Super helpful, thanks for sharing

utiler

Thanks TIG....

Diggsey

Just updated the first post with update 1.3. It includes the changes suggested by Jeff.

mitcorb

Thanks, Diggsey:
I just downloaded it to give it a try.

Rich O Brien

Really like this plugin.

One suggestion is that the context-menu 'Select Only' is changed as it is already used by Thomthom's Selection Tools. So I've 2 'Select Only' options.

Maybe all menu items under 'Recurve'

Diggsey

I've uploaded a new version. It behaves the same as the last version, but if you open it in notepad you can change the line:
RECURVE_ALL_UNDER_RECURVE_MENU = false
to:
RECURVE_ALL_UNDER_RECURVE_MENU = true

That will put the Select Only menu under the Recurve menu.

Rich O Brien

Thank you

jeff hammond

@diggsey said:

Just updated the first post with update 1.3. It includes the changes suggested by Jeff.

wow! that's great.
it's been added to my shortcuts and has replaced my most used ruby.. so long good friend (weld)

[btw - the 'select curve and recurve' (⇧W) seems like magic ]

thanks so much!