Proposal of new primitives

[Philippe Hurbain]

I propose the introduction of these six primitives (3 version 16 sides and 3 version 48 sides) that could solve some situations.
The example I have attached is the one with which I came up with the idea, in fact the most correct use would be for patterns with incomplete rings of different colors.
The primitives I propose come from the classic ndis to which, however, I moved the vertex of the circumscribed square to bring it to the vertical of the last vertex of the circle.

They should be quite interchangeable with the current tang primitives, but reducing the number of triangles required (partly because they are already included in the primitives and partly because their shape is more regular).

Not against it - actually I proposed that when I was a baby parts author a long time ago (Lugnet era...) but tang primitives was said to do the job then. Note that there are many more 48-sided such primitives that make sense (eg. 1-24 or 7-48)!