On 13-2-2015 21:43, Mike Horvath wrote:
>
> I'm not sure I understand. Having holes of any kind would still produce
> blinking I think.

Words... difficult...
I made a little simplified image to show what I mean.

-- 
Thomas

Post a reply to this message

Attachments:
Download 'test.png' (67 KB)

Preview of image 'test.png'