@ulrik I am curious if this ever got added?
EDIT Oh dang when I search the online version of the doc its there, woot!
https://docs.hise.audio/scripting/scripting-api/graphics/index.html#drawpath
the HISE documentation does link to the JUCE class with these attributes and there is a var strokeStyle that it says takes a JSON input, but I can't find anything on how to go about formatting that anywhere.
I have most of my custom look and feel functions drawing widgets I like, I just want to round some arcs knobs with the JUCE EndCapStyle(rounded) to get exactly what I want.
EndCapStyle { butt , square , rounded }
The type shape to use for the ends of lines. More...
(docs.juce.com)