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> On 21 Feb 2018, at 21:05, Alexandre Bergel <alexandre.ber...@me.com> wrote:
> 
> Well… you can change the color of any element (even if the visualization is 
> open).
> Simply goes to the canvas and change the trachel shape. I can provide an 
> example if you wish.

Yes please.
It would be great if 
- the modification applies uniformly to all the elements of the visualisation.
- Control the modification using a button or a key combination 
(increase/decrease)

I dont know if this possible but anyway, your solution looks fine to me :)

Abdelghani

> 
> Alexandre
> 
> 
> 
>> On Feb 21, 2018, at 8:38 AM, abdelghani ALIDRA <alidran...@yahoo.fr> wrote:
>> 
>> Hi Alex and thanks for your answer,
>> By playing with the contrast I mean to change (dynamically) how visible 
>> lighter colors are from darker ones. And by dynamically, I mean I dont want 
>> to re-build the visu.
>> 
>> To be more specific, I can have for a certain visu, a shape coloured with 
>> Color red and bordered with Color red slightlyDarker.
>> At some point I would like to see the difference between these two colours 
>> and at some other point I dont. 
>> So for instance, I increase the contrast and I see the border of the shape 
>> them I decrease it then I see the shape uniformaly coloured.
>> 
>> So, is there a way to do so?
>> Thanks,
>> Abdelghani
>> 
>> 
>> De : Alexandre Bergel <alexandre.ber...@me.com>
>> À : abdelghani ALIDRA <alidran...@yahoo.fr>; Any question about pharo is 
>> welcome <pharo-users@lists.pharo.org> 
>> Envoyé le : Mercredi 21 février 2018 2h19
>> Objet : Re: [Pharo-users] Roassal : Playing with the contrast
>> 
>> Hi!
>> 
>> What do you mean with contrasts? You mean the colors?
>> Currently, there is no way to automatically assign colors to a 
>> visualization, although you can use a color palette (look at the class 
>> RTPalette).
>> 
>> Cheers,
>> Alexandre
>> 
>> 
>>> On Feb 20, 2018, at 7:01 AM, abdelghani ALIDRA via Pharo-users 
>>> <pharo-users@lists.pharo.org> wrote:
>>> 
>>> 
>>> From: abdelghani ALIDRA <alidran...@yahoo.fr>
>>> Subject: Roassal : Playing with the contrast
>>> Date: February 20, 2018 at 7:01:20 AM GMT-3
>>> To: "pharo-users@lists.pharo.org" <pharo-users@lists.pharo.org>
>>> Reply-To: abdelghani ALIDRA <alidran...@yahoo.fr>
>>> 
>>> 
>>> Hi,
>>> 
>>> I am wondering if there is a way to play with the contrast of Roassal 
>>> visualisations.
>>> If so, please tell me how :)
>>> 
>>> Thank you in advance
>>> Abdelghani
>>> 
>>> 
>>> 
>> 
>> 
> 




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