Multi-path polygons not supported

[stuartpb]

(according to the User Guide)

I would greatly appreciate this feature, as it would allow drawing text using the same method as Spiff.scad.

[kaosat-dev]

hi @stuartpb I know this has been years, but could you explain what you mean by multi-path polygons ?

[stuartpb]

See https://en.wikibooks.org/wiki/OpenJSCAD_User_Guide#Polygon:

polygon({ points: [ [0,0],[3,0],[3,3],[0,6] ], paths: [ [0,1,2],[1,2,3] ] }); // multiple paths not yet implemented

A two-dimensional vector for paths specifies shapes to subtract from the initial path. See the documentation for OpenSCAD's polygon function.

[kaosat-dev]

ok thanks for clarifying @stuartpb !

[z3dev]

@stuartpb sorry but this functionality will not be part of V2. We are breaking from SCAD for many reasons. I think this functionality can be reproduced by simple boolean operations.

If you still want this functionality then you will need to write a special ‘polygon’ function.

[stuartpb]

That's reasonable: the documentation notes that successive polygons are just difference()d, and I've never seen a case where OpenSCAD's "lists of indexes into a flat list of points" model makes more sense for 2D polygons than multiple lists of points would.

[z3dev]

Thanks.