Hello colleague,
you can do everything Cairo internally without painting to screen (actually
the part in Cairo that accesses Screen devices is the smaller one).
So you can setup CairoImageSurfaces on data array (so something like
d = [8,4; 2,1]
d0 = reinterpret(Uint32,d);
cs = CairoImageSurface(d0,Cairo.FORMAT_ARGB32);
(written from remembering, i do not have julia available on this
computer...)
Then you find your data in cs.data. The same you can do with a target
surface and you can use the cs Surface via CairoPattern(cs) as source to
paint. And then scaling applies.
When i'm back home, i can post an (working) example.
Wishing a happy day,
Andreas
On Sunday, August 3, 2014 11:24:07 PM UTC+2, Andrei Zh wrote:
>
> @Andreas: As fas as I understand, Cairo only supports resizing when
> displaying, while I was more interested in interpolating data matrices (I
> use image as a source for machine learning algorithms and resizing as a way
> to enlarge/reduce feature space). Please, let me know if there's a way to
> extract interpolated data from Cairo surface.
>
>
> On Sun, Aug 3, 2014 at 8:11 PM, Tim Holy <[email protected] <javascript:>>
> wrote:
>
>> Cairo is only used for ImageView.
>>
>> --Tim
>>
>> On Sunday, August 03, 2014 08:26:11 AM Andreas Lobinger wrote:
>> > Hello colleague,
>> >
>> > i might be wrong, but you are already using Cairo in Images. You could
>> do
>> > all the bitmap resizing/interpolation stuff by painting on a scaled
>> > CairoSurface. This is even available in different interpolation schemes
>> >
>> http://www.cairographics.org/manual/cairo-cairo-pattern-t.html#cairo-filter->
>>
>> t
>> >
>> > Wishing a happy day,
>> > Andreas
>>
>>
>
