Review Request 123809: Use list of hard coded colors instead of generating it

[Philipp A.]

> On Mai 16, 2015, 3:44 nachm., Philipp A. wrote:
> > i’m also against this. i’ve dived a bit into color theory, and if the algorithm to choose the set of colors isn’t named, there’s not much to argue for it.
> > 
> > i think we want a qualitative color palette, and shhould choose a way to generate easily distinguishable colors.
> > 
> > * http://stanford.edu/~mwaskom/software/seaborn/tutorial/color_palettes.html
> > * http://colorbrewer2.org/?type=qualitative&scheme=Paired&n=12
> > * http://datavisualization.ch/inside/how-we-created-color-scales/
> 
> Sergey Kalinichev wrote:
>     >i’m also against this. i’ve dived a bit into color theory, and if the algorithm to choose the set of colors isn’t named, there’s not much to argue for it.
>     
>     See my previous comment.
>     
>     >i think we want a qualitative color palette, and should choose a way to generate easily distinguishable colors.
>     
>     I took a quick look at the links that you provided, but couldn't find a set of 30-35 distinguishable colors or an algorithm to generate it. Seems like all those links about generating 10-15 colors which is hardly enough.

then how about [this](http://tools.medialab.sciences-po.fr/iwanthue/)?


- Philipp


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On Mai 16, 2015, 8:07 vorm., Sergey Kalinichev wrote:
> 
> -----------------------------------------------------------
> This is an automatically generated e-mail. To reply, visit:
> https://git.reviewboard.kde.org/r/123809/
> -----------------------------------------------------------
> 
> (Updated Mai 16, 2015, 8:07 vorm.)
> 
> 
> Review request for KDevelop.
> 
> 
> Repository: kdevplatform
> 
> 
> Description
> -------
> 
> This fixes 2 issues:
> 
> *Currently rainbow highlighting only works for the first 10 declarations in Function and Other contexts. All other declarations get highlighted with the default color.
> *The current interpolation algorithm is very poor, it can generate only about 10 different colors, all other look alike.
>     
> So this patch adds ~35 distinguishable colors, which should be more than enough for most cases.
> 
> 
> Diffs
> -----
> 
>   language/highlighting/colorcache.cpp e2729f2 
> 
> Diff: https://git.reviewboard.kde.org/r/123809/diff/
> 
> 
> Testing
> -------
> 
> 
> File Attachments
> ----------------
> 
> Before
>   https://git.reviewboard.kde.org/media/uploaded/files/2015/05/16/2fb289f0-69d8-4817-bf0d-d1691c98d3c1__test_highl_b.png
> After
>   https://git.reviewboard.kde.org/media/uploaded/files/2015/05/16/7bcdb744-e47f-435b-a02e-d0ad35b4a59e__test_highl_a.png
> After (dark)
>   https://git.reviewboard.kde.org/media/uploaded/files/2015/05/16/b67be6b5-b4bf-4d74-8ed9-206e897daa14__test_highl_adark.png
> 
> 
> Thanks,
> 
> Sergey Kalinichev
> 
>

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