Re: [Lib2geom-devel] https://bugs.launchpad.net/inkscape/+bug/1482806

[Alvin P. <pe...@va...>]

Sounds like a good idea, a somewhat similar problem occurred recently in
https://bugs.launchpad.net/inkscape/+bug/1473317

Unfortunately, I don't know how to actually do 
this. My C programming skills are limited to 
microprocessors that are 15 years old and still use integer arithmetic.

Alvin

At 08:50 AM 8/13/2015, Krzysztof Kosiński wrote:
>Instead of changing the unary minus operator, the default constructor
>for SBasis should be changed so that it creates an SBasis that is
>identically zero (i.e. contains only one Linear(0, 0)). Null values
>should not be representable in the SBasis object, and there should
>assertions everywhere verifying that there is at least one element; no
>member functions should ever remove the last Linear.
>
>Regards, Krzysztof
>
>2015-08-13 2:11 GMT+02:00 Alvin Penner <pe...@va...>:
> > Hi,
> >         this is a request for comment on a 
> proposed fix for Bug 1482806. The
> > bug is apparently caused by returning a null value when attempting to
> > take the unary negative of an sbasis which is zero. The proposed code
> > returns the original sbasis instead. Any comments on whether this is
> > acceptable? The code is fairly deeply embedded, so it may have
> > implications elsewhere.
> >
> > Alvin Penner
> >
> >
> > 
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