PCB horizontal lines?

[remote1]

After I poured my Power and Ground layer I noticed a number of horizontal lines on the PCB. I’m wondering what they are and what the purpose of them is? I’m pretty sure I didn’t put them in…

[davidsrsb]

What is your Copper Zone Properties - Fill Mode setting, Polygon or Segment?

[remote1]

Fill mode is polygon

[Rene_Poschl]

Is it possible the renderer is partly stuck in the “show outline” view mode (left toolbar)
If this is the case restarting pcb_new might help.

[PCB_Wiz]

@remote1

After I poured my Power and Ground layer I noticed a number of horizontal lines on the PCB. I’m wondering what they are and what the purpose of them is?

I think those are merely an artifact of how polygon fill works.
Polygon Fill has to draw a path that defines the outside of an area, and then fills that, but the holes need to be outside the polygon - to achieve that, the polygon breaks at the edges and then comes in, around the hole, and out again, and mathematically the hole is now outside the fill area. Quite clever.
( Just like the food you digest, is outside your body )

[bobc]

@PCB_Wiz

I think those are merely an artifact of how polygon fill works.

True, the gerber file only accepts non-intersecting polygons… although I don’t think the method used is the only solution, maybe it is the easiest.

@PCB_Wiz

( Just like the food you digest, is outside your body )

Yeah, isn’t that weird !?