OpenSCAD Arc

thingiverse

I have always found it infuriating that OpenSCAD lacks a function to sketch curves. Recently, I required drawing multiple arcs and was searching for some module that could do it, but all of them seemed far too complicated, as they relied on differences from other polygons or failed to respect the variable $fn, necessitating additional variables. Ultimately, I created a module based on tracing the path of the curve, occupying only a few lines while adhering to the use of $fn. My tests revealed that it renders swiftly. If each arc draws a circle, the resulting shape can be utilized to generate hollow cylinders (tubes) without needing to employ differences. The file also contains the 'arcs' module, enabling you to draw concentric curves. https://gitlab.com/joaquinfq/openscad/blob/master/Modules/Cylinder/arc.scad