[Gimp-developer] Hard edged Ink tool?

[Øyvind Kolås]

On 8/29/06, Henning Makholm
> My concrete need is that I edit bitmaps with a specific color
> convention - they can be seen e.g. at <http://dk.trackmap.net/a>.  I
> use a system of ad-hoc software to convert the bitmap source to the
> vector versions linked to below the image; this software depends on
> the exact colormap in the picture, because different colors should be
> vectorized in different ways.

This need could be solved using layer-masks and threshold. Or to
attack the problem with an unstable dialect of xml:

<image width='751' height='650'>
<layers>

<layer name='brown'>
  <layer mode='apply_mask'>
      <filter mode='threshold'>
      <grayscalelayer/>
  </layer>
  <layer color='rgb(0.5,0.5,0.2)'/>

<layer name='blue'>
  <layer mode='apply_mask'>
      <filter mode='threshold'>
      <grayscalelayer/>
  </layer>
  <layer color='rgb(0.0,0.0,1.0)'/>

<layer name='violet'>
  <layer mode='apply_mask'>
      <filter mode='threshold'>
      <grayscalelayer/>
  </layer>
  <layer color='rgb(0.0,1.0,1.0)'/>

<layer name='black'>
  <layer mode='apply_mask'>
      <filter mode='threshold'>
      <grayscalelayer/>
  </layer>
  <layer color='rgb(0.0,0.0,0.0)'/>

<layer name='green'>
  <layer mode='apply_mask'>
      <filter mode='threshold'>
      <grayscalelayer/>
  </layer>
  <layer color='rgb(0.0,1.0,0.0)'/>

<layer name='red'>
  <layer mode='apply_mask'>
      <filter mode='threshold'>
      <grayscalelayer/>
  </layer>
  <layer color='rgb(1.0,0.0,0.0)'/>
</layer>
<layer color='rgb(1.0,1.0,1.0)'/>
</layer>
</image>

/Øyvind K.

-- 
«The future is already here. It's just not very evenly distributed»
                                                 -- William Gibson
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