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Re: Image transformations
From: |
Eli Zaretskii |
Subject: |
Re: Image transformations |
Date: |
Tue, 25 Jun 2019 18:35:54 +0300 |
> From: Stefan Monnier <address@hidden>
> Cc: address@hidden
> Date: Tue, 25 Jun 2019 10:43:22 -0400
>
> >> Part of the reason for my question above is to figure out if the
> >> implementation of the API is likely to have such matrix inversion
> >> code internally
> > How can we possibly know for sure, on all supported platforms?
>
> I'm not looking for "know for sure", just for a general understanding of
> how things usually work.
>
> >> (since it seems quite possible that sometimes one is
> >> preferable and sometimes the other).
> > I admit I don't see why we would have different preferences.
>
> I'm asking about the other side of the API, i.e. not us but the
> implementors of Cairo, etc...
>
> It's really just out of curiosity, not directly related to what our code
> should do: does the "inverse matrix" indicate that the Windows guys use
> "fundamentally" different algorithms than the Cairo guys, or just that
> inverting the matrix is considered "par for the course" because
> sometimes you need one and sometimes you need the other.
I'm not the right person to answer these questions, as I don't have
enough background and experience in this area. I think the differences
reflect the different designs and mindsets of the relevant
environments, but that's just a guess. Perhaps Yamamoto-san could
comment on the nature of these differences.
- Re: Image transformations, (continued)
- Re: Image transformations, Alan Third, 2019/06/16
- Re: Image transformations, Eli Zaretskii, 2019/06/16
- Re: Image transformations, Alan Third, 2019/06/17
- Re: Image transformations, Eli Zaretskii, 2019/06/19
- Re: Image transformations, Eli Zaretskii, 2019/06/24
- Re: Image transformations, Stefan Monnier, 2019/06/24
- Re: Image transformations, Eli Zaretskii, 2019/06/24
- Re: Image transformations, Stefan Monnier, 2019/06/24
- Re: Image transformations, Eli Zaretskii, 2019/06/25
- Re: Image transformations, Stefan Monnier, 2019/06/25
- Re: Image transformations,
Eli Zaretskii <=
- Re: Image transformations, YAMAMOTO Mitsuharu, 2019/06/25
- Re: Image transformations, Eli Zaretskii, 2019/06/26
- Re: Image transformations, YAMAMOTO Mitsuharu, 2019/06/26
- Re: Image transformations, Eli Zaretskii, 2019/06/27
- Re: Image transformations, Alan Third, 2019/06/25
- Re: Image transformations, Eli Zaretskii, 2019/06/25
- Re: Image transformations, Eli Zaretskii, 2019/06/27
- Re: Image transformations, Alan Third, 2019/06/28
- Re: Image transformations, Eli Zaretskii, 2019/06/28
- Re: Image transformations, Eli Zaretskii, 2019/06/29