[Pharo-dev] Understanding Roassal

Alexandre Bergel alexandre.bergel at me.com
Tue Nov 26 15:03:59 EST 2013


Hi!

> Is your team open to external contributions as well ?

Yes, absolutely. Roassal already contains many contributions.

> I am still exploring 2 options 
> 
> a) to use Roassal as a way to learn Athens 
> 
> b) to use Roassal as a basis for my project
> 
> I did not expect that you would take such a generic approach to graphics , but from what I see I cant find a reason why I should not be using Roassal. For the time being my whole focus is to create a Vector graphics editor, as you can imagine this means a designer for vector graphics which it could create a set of classes that could find their way back to Roassal. I dont want to reinvent the wheel and I really lke to coordinate effort with people with similar goals. 

Let us know how we can help...

Cheers,
Alexandre


> 
> 
> On Tue, Nov 26, 2013 at 5:14 PM, Alexandre Bergel <alexandre.bergel at me.com> wrote:
> It is indeed.
> Athens offers a nice way to build path. Once this will be fully integrated in Roassal, we will have a flying machine.
> 
> Alexandre
> --
> _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:
> Alexandre Bergel  http://www.bergel.eu
> ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.
> 
> 
> 
> On Nov 26, 2013, at 11:52 AM, kilon alios <kilon.alios at gmail.com> wrote:
> 
> > yeap thank you , not only anti-aliasing works now but every look way cooler, looks like Athens is quite an enhancement.
> >
> >
> > On Tue, Nov 26, 2013 at 4:14 PM, Alexandre Bergel <alexandre.bergel at me.com> wrote:
> > Ah okay. Then, you need to load the package RoassalAthens from the repository of Roassal. But Smalltalkhub is down right now. Here is a mcz:
> > https://dl.dropboxusercontent.com/u/31543901/TMP/RoassalAthens-AlexandreBergel.14.mcz
> >
> > Load this mcz file (e.g., drag and drop it in your Pharo window), then execute "ROPlatform setCurrent: 'athens'. “ and you should get antialiasing.
> >
> > Cheers,
> > Alexandre
> > --
> > _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:
> > Alexandre Bergel  http://www.bergel.eu
> > ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.
> >
> >
> >
> > On Nov 26, 2013, at 10:47 AM, kilon alios <kilon.alios at gmail.com> wrote:
> >
> > > ROPlatform setCurrent: 'athens'.
> > >
> > > gives me -> KeyNotFound: key 'athens' not found in Dictionary
> > >
> > > 'Athens' fails too.
> > >
> > > I can verify lack of anti-aliasing also on win7.
> > >
> > > I cant find an option to set anti-aliasing or Athens as backend in Easel .
> > >
> > > Loaded Roassal today with ->
> > >
> > > Gofer new smalltalkhubUser: 'ObjectProfile' project: 'Roassal'; package: 'ConfigurationOfRoassal'; load. (Smalltalk at: #ConfigurationOfRoassal) load.
> > >
> > > the image I am using is version 30585.
> > >
> > >
> > > On Tue, Nov 26, 2013 at 2:23 PM, Alexandre Bergel <alexandre.bergel at me.com> wrote:
> > > > Yes I am interested in Amber Roassal and also Roassal3d. Mostly on Amber Roassal because I want to target tablets and phones and since I have no desire to go through the App stores, javascript is my best option.
> > >
> > > We are in sync
> > >
> > > > Another thing I have observed is that in all examples there is no anti-aliasing which I find very weird because my vector editor which uses Athens as well, has anti-aliased lines. Why is that ?
> > >
> > > Strange. Have you tried to execute “ROPlatform setCurrent: ‘athens’”. You can use the easel to set the Athens canvas.
> > > Else, simply use the Moose image, it comes with Athens and Roassal properly installed.
> > >
> > > > I am very excited about Roassal , the more I look at the code and the documentation the more I realize how flexible it is.
> > >
> > > Thanks. We took care of having a lean and clean design. Although we are quite satisfied, it is far from representing our ideal yet. One think I would like to remove, is the rendering loop, having it just above Athens, but below Roassal. We will work on this in January I think.
> > >
> > > > Is Roassal3d part of the Roassal project or is it an outside project ?
> > >
> > > It is a new and different project.
> > >
> > > > Also do you plan integrating with Spec ? Will Roassal be a backend for Spec ?
> > >
> > > We have no plan for this right now. Glamour is well integrated with Roassal. It should be easy to do it with Spec.
> > >
> > > Alexandre
> > >
> > >
> > > >
> > > >
> > > > On Mon, Nov 25, 2013 at 11:46 PM, Alexandre Bergel <alexandre.bergel at me.com> wrote:
> > > > Hi!
> > > >
> > > > > So I took your advice and gave a good look to Roassal to learn more about how to use Athens. First I want to congratulate the coders, I was expecting a simple visualisation library for object graphs and what I see is a full blown graphics library that can be used for many diffirent kinds of graphical illustrations.
> > > >
> > > > Thanks for your nice words :-)
> > > >
> > > > > I still however trying to understand the end goal of Roassal , is there an end goal or is it generally code visualisation ?
> > > >
> > > > The goal of Roassal is getting broader with the time. The main objective of Roassal is to be a platform for data visualisation. So, as soon as you have a bunch of data (e.g., plenty of numbers or any arbitrary objects), then Roassal should give you the tools to visualize and interact with your data.
> > > >
> > > > Roassal is slowly moving from a tool for end-user to a platform on which domain specific languages can be created. This is an important point when reusing visualizations (e.g., ROTreeMapBuilder, ROMapBuilder, ROMondrianViewBuilder are all compelling examples).
> > > >
> > > > Roassal is currently being ported to Amber, which will probably broaden the vision behind Roassal. Early examples may be found on: http://pestefo.github.io/roamber/#
> > > >
> > > >
> > > > > Also I wanted to ask if Roassal can do visual coding. By that I mean visualize not only objects but messages inside methods so the users with drag and drop code in a visual way.
> > > >
> > > > Yes, Roassal is made for that. If there is something that Roassal does not allow you to do, then let us know, we are a whole team ready to polish Roassal.
> > > >
> > > > > I took a look at the examples but I see nowhere the use of bezier curves , why is that ?
> > > >
> > > > There is a few.
> > > >
> > > > Try:
> > > > -=-=-=-=-=-=-=-=-=-=-=-=
> > > > "Source code: ROMondrianExample>>bezierCurveOn:"
> > > > "Preambule. It includes the initialization. "
> > > > | view rawView |
> > > > rawView := ROView new.
> > > > view := ROMondrianViewBuilder view: rawView.
> > > > "-------------"
> > > > "-------------"
> > > >
> > > > view shape circle size: 10.
> > > > view nodes: (Collection withAllSubclasses).
> > > > view shape bezierLine.
> > > > view edgesFrom: #superclass.
> > > > view radialTreeLayout.
> > > > view center.
> > > >
> > > > "-------------"
> > > > "-------------"
> > > > "Below is the initiation of the menu and opening the visualization"
> > > > ROEaselMorphic new populateMenuOn: view.
> > > > view open
> > > > -=-=-=-=-=-=-=-=-=-=-=-=
> > > >
> > > > Have a look at the class ROSplineExample
> > > > It does not contains many examples, but you get enough to build appealing visualization (e.g., https://www.facebook.com/media/set/?set=a.511442275609041.1073741827.340543479365589&type=3  )
> > > >
> > > > More screenshots are available on: https://www.facebook.com/ObjectProfile
> > > >
> > > > Cheers,
> > > > Alexandre
> > > >
> > > >
> > > >
> > >
> > >
> > >
> >
> >
> >
> 
> 
> 





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