Visual drawing of polygon

[derkork]

Is your feature request related to a problem? Please describe.
Whenever I want to create a polygon I need to imagine how it would look like. In addition the handling of 2D point arrays isn't really great either, so I cannot easily remove points or insert one in the middle.

Describe the solution you'd like
It would be great if there was a special node which allowed you to draw a polygon and edit the points with the mouse, also inserting and deleting points and also typing in the position of a point if one needs to be exact. Snapping to a grid would be a bonus. Another bonus would be if a piece of additional data could be given to each point (e.g. a rounding factor when using polyround). The node would then simply create an array of vector2 or vector3 objects based on the drawing.

Describe alternatives you've considered
Alternatively the nodes for creating a vector2/vector3 array should get features for inserting or reordering items. Drawing a polygon would still help visualizing stuff.

[WillAdams]

There is an interactive tool for drawing polygons which has been posted to the OpenSCAD mailing list (or at least that's what my uncertain organic memory leads me to believe) --- perhaps a workable example to look at?

[derkork]

I could only find a discontinued tool named "Polygon Rabbit" and the mailing list does no longer seem to be mirrored on the web, do you happen to know a name or a link?

[derkork]

And i found this one: https://climberg.de/polygoneditor/

[WillAdams]

I think it was:

https://github.com/butcherg/wxpolygon/releases/tag/v1.2

or maybe:

https://climberg.de/polygoneditor/

(both of which I found on the /r/openscad subreddit --- mental note, mirror all interesting things from the mailing list to that subreddit)

[derkork]

Actually I came to the realization that this would be a lot more useful if one could add measurements to the drawing, ideally from the variables. This would be really great for parameterization of the sketch. FreeCad can do such a thing, but to replicate this in OSGE I would need to have at least some minimal sketch solver, which may take a while to get functioning.

[WillAdams]

I've done things along those lines in the past by having a function which calculates a value which is then used as input for sizing an object/element.

The sketch solver in Solvespace is being used in "CADsketcher" for Blender and I thought in FreeCAD as well.

[derkork]

Yes i also use functions extensively for this purpose, helps to keep the graphs clean. The solvespace library is sort of undocumented, so I'm not sure how far I could get with it. I'd probably also prefer something written in C# as to not add native dependencies which would make distribution across platforms more problematic. I think this goes to the backburner for a little while until I have some attack plan for this.