Re: [Gimp-developer] How to get the data out of boundary in area-filte​r-operatio​ns of GIMP?

[Michael Muré <batolettre gmail com>]

Hi,

As far as I know, the returned value is currently set to 0x00, but you can check that easily.

I did some work to be able choose this behavior, but it's not ended yet. This work in the abyss branch in git. More details here: https://mail.gnome.org/archives/gegl-developer-list/2011-October/msg00003.html

If you would like to complete this work, please go ahead.

Best Regards,

2012/3/1 Zhang Peixuan <zhangpeixuan cn gmail com>

Hello all,

 

In GIMP,the area-filter-operations always get more pixel data out of the input buffer's extent, then output the processed data.

So, how the pixel datas out of extent are gotten in  gegl-buffer-set and gegl-buffer-get ,maybe they are all set 0x00, or another setting method??

such as:

      gegl_buffer_get(input_buffer, 1.0, src_rect,  format, in_data,GEGL_AUTO_ROWSTRIDE);

if src_rect is larger than input_buffer->extent ,what data will be stored in in_data? What is the machanism?

 

Now our progress is slow ,because of the problem. So,can anyone help us explain it?

We're so glad to receive any advice from you!

 

Thanks a lot!

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Michael