topic polygon command + arcs in Fusion Electronics Forum

polygon command + arcs

ledvina — Wed, 22 Apr 2026 20:41:19 GMT

Hello,

POLYGON command is documented as accepting arc segments, referring to LINE documentation.

LINE is generating arc correctly, polygon is using straight segments:

polygon .1 (10 10) -180 (10 20) (20 20) -180 (20 10) (10 10);

line .1 (10 10) -180 (10 20) (20 20) -180 (20 10) (10 10);

Possible workaround is to generate line and then convert it to polygon.

Regards,

Petr Ledvina

Re: polygon command + arcs

jorge_garcia — Thu, 23 Apr 2026 16:08:32 GMT

Hello @ledvina ,

I just tried this exact sequence in Fusion and I get identical curved outlines. I entered these commands one after the other in the CLI. See image

Let me know if there's anything else I can do for you.

Best Regards,

Re: polygon command + arcs

ledvina — Tue, 28 Apr 2026 08:46:52 GMT

Hello Jorge,

I'm sorry for late reply. I checked again and signal polygons in Board do work. But non-signal layers in Board and all layers in Library ignore arcs - is seems that Polygon Pour is accepting arc segment, but Polygon Shape does not.

Best Regards,

Petr Ledvina

Re: polygon command + arcs

jorge_garcia — Tue, 28 Apr 2026 21:00:27 GMT

Hello @ledvina ,

This highlights that poly shape doesn't even have a dedicated CLI command. Did you try this in the library? In the library you only have polyshape so I guess that's where you are running into this. I'll make a bug report for this.

Let me know if there's anything else I can do for you.

Best Regards,