[Gegl-developer] Proposition : GeglInterpolator

[geert.jordaens at telenet.be]

>Nope, the point is that interpolation is wrong when scaling down you
>as will happen when scaling down using an affine transform or a
>perspective transform. By transforming the corners of a pixel, one
>would get an idea about the size needed for the resampling kernel.
>
>If you scale a image to 10% of the original size using cubic, you have
>a situation where the data for each destination pixel is taken from a
>region of 4x4pixel, whilst it should at least be taken from a region
>of 10x10pixels, 84% of the image data is thrown away.

OK, the handling of scaling down is not yet in the proposition 

Could we not just add the scale factor to the API ?