Heh, interesting! I'm getting a new and different offset error in inkscape trunk. It does not appear to be a problem with the difference boolean op, (fortunately) but rather the position of the result is off by a little.
I'm not sure what causes this, but I suspect it's a roundoff error to do with the precision. To fix, simply erase the shapes directly behind your result, or use snapping to snap the
It is a bug though. Whether it's one that can be easily fixed, I have no idea. :)
I say file a bug report for it.
My 2p. -C
On Sun, Apr 24, 2016 at 3:19 PM, Brynn <brynn@...3089...> wrote:
Thanks C R.
That was the first thing I thought too, at first. The bottom object must have a stroke. But as I said, they are both filled with no stroke.
Here's link to SVG file: http://inkscapecommunity.com/jd/imgs/diff-diff.svg . It has the rings already duplicated. So to reproduce, select the top green and top gold rings, and do Difference.
Thanks again :-) brynn
From: C R Sent: Saturday, April 23, 2016 12:05 PM To: Inkscape User Community Subject: Re: [Inkscape-user] Difference difference
Could not duplicate the error, however if you have a stroke applied to your shapes that is the same colour as your fill, that may explain what we are seeing here. :)
Boolean shape ops are done to fills only, and do not take into account line thickness on the resulting paths (this is intentional).
-C
On Sat, Apr 23, 2016 at 6:21 PM, Brynn <brynn@...3089...> wrote:
Hi Friends, It seems like I should know the answer to this. But I don't recall hearing about it. Starting with these 2 rings, which have fill and no stroke: http://inkscapecommunity.com/jd/ss/diff1.png I duplicate both, and then Difference. At 100% zoom they look ok. But zoom in (in this case, all the way, for best view) and you can see that the Difference wasn't correct. http://inkscapecommunity.com/jd/ss/diff2.png It's not a huge amount, but I would expect there shouldn't be any difference at all. This on Windows 7, 64-bit, sp1, Inkscape 0.91, 32-bit, exe installer. Is that a bug? Or is there some reason it's expected not to be precise?
Thanks for your help :-) brynn
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