Scripted generation of circle yields error only in B.Mask

External Plugins
1

my first experiments creating solder mask openings revealed “unexpected behavior”:

def circle(x, y, d):
    circle = pcbnew.PCB_SHAPE()
    circle.SetShape(pcbnew.S_CIRCLE)
    circle.SetWidth(1413) # nanometers
    circle.SetCenter(pcbnew.VECTOR2I(pcbnew.FromMM(x), pcbnew.FromMM(y)))
    circle.SetRadius(pcbnew.FromMM(d/2))
    circle.SetFilled(True)
    circle.SetLayer(pcbnew.F_Mask)
    pcbnew.GetBoard().Add(circle)
    pcbnew.Refresh()

seems to work as expected: I get a round shape in F.Mask which I can select, move, delete.

But if I change F_Mask to B_Mask, I get the following when I click the circle:
circle_of_death

Regardless of my selection, the doubled circle is selected. I can’t delete it, and the systems seems to get unstable.

Using “circle.SetLayer(38)” shows no problems.

What could be the difference between “circle.SetLayer(pcbnew.B_Mask)” and “circle.SetLayer(38)”?

And why does it happen only with pcbnew.B_Mask and not with pcbnew.F_Mask?

2

Disregard: It seems there was a conflicting definition of circle() in my code.

What is the best way / the convention in this forum to deal with such wrong posts: Delete, edit, comment (as currently)?

If I delete the original post, it wouldn’t do any more harm, but it might annoy people who have already read it.

3

Don’t delete. If you find the solution by yourself you can mark your post as Solution.

Even “wrong” questions may be beneficial for others, and deleting valid posts just causes confusion.

4

I agree that removing posts is confusing/annoying.

The subject is likely misleading since I misinterpreted my observations.