[fpc-pascal] fpImage resample via interpolation

[Marc Weustink]

Mattias Gaertner wrote:
> On Fri, 28 Nov 2008 15:45:08 +0100
> "Vinzent Höfler" <JeLlyFish.software at gmx.net> wrote:
> 
>>> Von: "Mattias Gärtner" <nc-gaertnma at netcologne.de>
>>> I'm curious: who needs more than 13 different image interpolations?
>> 13 different users, of course. ;)
>>
>> That was a rhetorical question, wasn't it?
> 
> Not completely. ;)
> 
> I don't doubt the need of 13 different interpolations. I know most of
> the interpolations from other graphical/mathematical applications. 
> But I doubt the need for 13 different *image* interpolations.
> My question is if they exist in fpimage only, because they were
> easy to implement, or are they all that different that you need
> them?

I think speed vs. quality if you have multiple steps.
While playing with aggpas, I found that the image1 example gives a nice 
idea about the differences:
http://aggpas.org/aggpas-demo.htm

Marc