'Re: GSoC 2009 proposal, looking for mentor'

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List: koffice-devel
Subject: Re: GSoC 2009 proposal, looking for mentor
From: Sven Langkamp <sven.langkamp () gmail ! com>
Date: 2009-02-24 19:35:36
Message-ID: 478b087a0902241135x3adc4b01r77dd1757653ad041 () mail ! gmail ! com
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On Tue, Feb 24, 2009 at 7:04 PM, LukasT.dev@gmail.com
<lukast.dev@gmail.com>wrote:

> Hi list,
>
> I would like to make GSoC 2009 proposal one more time as student for
> KOffice
> with focus on Krita or Karbon. I already did GSoC 2008 successfully with
> with
> really great mentor boud for Krita. I gathered some experiences with Krita,
> I
> contributed after GSoC also. My goal is to use this experiences to make
> really
> cool project with nice results.
>
> As you may know, there will be less proposals accepted in Google compared
> to
> year 2008. I would like to focus myself on stuff that are really important
> for
> KOffice, so I would like to discuss my list of ideas with you so that I can
> focus on few proposals and apply with them. I'm looking for advices what is
> really important.
>
> I'm also looking for mentor. I talked with boud and Cyrille and they both
> seems to not to mentor this year. So who is going to mentor for KOffice?
>
> I already made some cuts (with boud and Cyrille) before contacting list.
>
> I sorted the ideas according my preferences and they contains comments from
> Cyrille sometimes:
>
> 1. 3D model of brush
>
> Paintops are sometimes also modelled as 3D device. I gathered some
> experiences with 3D last semester and I would managed to do some 3D
> model.
>
> I already gathered some publications about various brushes (even 3D)
> and Baxter work also contains useful informations too.
> http://wiki.koffice.org/index.php?title=User:LukasT
> I also received some GPL2 code from a student who did 3D brush as
> thesis and it is waiting to be ported to Krita
>
> Excepted results: paintop that is based on 3D model and has stronger
> physical attributes than current brush engines. Bidirectional painting
> support.
>
> Something like this in short http://youtube.com/watch?v=W4suJCMdnsU
>  and this http://youtube.com/watch?v=CNfAXjRQkr0
>
> boud and Cyrille: +1

+ 1 from me too :)

2. Diffusion curves
> http://artis.imag.fr/Publications/2008/OBWBTS08/
> I already emailed authors:
> Main problems:
> * solving a Poisson equation AFTER rasterization.
> This implies that:
> 1) The rasterization is not a classical one, so you wouldn't be able to
> represent the images in classical vector formats like PostScript, for
> example.
> 2) The heat diffusion is quite slow when solving it on the CPU, so we used
> the GPU. But this restricts the use of Diffusion Curves to people who
> have good GPUs.
> 3) We can solve Poisson equation on big images, but not on infinite ones.
>
> Excepted results: New tool - diffusional curves in Krita/Karbon or
> both (don't know about possibilities of sharing this tool)
>
> Cyrille added:
> Deffinitively for Karbon, and also very cool. The point 2) isn't really a
> problem, if you use the correct programmation language, I invite you to
> look
> at OpenCL for this, it should be available in Nvidia and ATI proprietary
> drivers, shortly. And it will come as open source in the next two or three
> years. The advantage of OpenCL is tht it can run on GPU or CPU.

I think this is for Krita. The main problem for Karbon would be that SVG
doesn't support this (yet).
While this really should use OpenCL I have my doubts that OpenCL will be
ready before the gsoc starts

Other than that I think it would be very cool project and I would love to
see it in Krita.

> 3. Advanced interpolation
> There is need for good scaling algorithm for images in Krita and maybe
> in other apps too. Lately I found this discussion interesting
> https://lists.xcf.berkeley.edu/lists/gimp-developer/2009-January/021512.htm
>
> Basically it talks about various improved scaling and interpolating
> algorithms. So the aim of this project would be to do some kind off
> research and implement as much as possible many advanced interpolating
> algorithms so
> that we can compere.
>
> Excepted result: better scaling possibilities of graphics data in KOffice,
>
> 4. Support for animation
> This would be quite hard. Make 2D renderer. MNG or own file format for
> saving, export every frame as [PUT FILEFORMAT HERE]
> I had idea in which every layer is a scene and for start few things
> could be animated:
> * Basic motion
> * Filters and it's values for the whole layer
> * Paintops and their movements
> * Geometric transformations +Warping
> I would propose some kind of system that Blender uses and in Blender
> it is call IPO curves.
> I don't know if this would be for Krita or Karbon.
>
> Inspiration: Blender, http://www.les-stooges.org/pascal/pencil/ ,Gimp
> Animation Pack GAP,
>
> Excepted results: Timeline, animate able KisObjects, animation support
> for filters and import/export filters for it. It should not just flip
> layers.
>
> Cyrille:
> While I love that idea, and would like to see it happening in the future
> (possibely with the upcoming Qt's animation framework), including animated
> svg, I fear this is too huge for a google summer of code project.

Making movies would be pretty cool. MNG never really took off and with html
5 coming we will see open source web video in the future.
I would prefer if we had a common infrastructure for Karbon and Krita here,
but as Cyrille already said it will be a lot of work just to get the
infrastructure and will also need new guis.

> What do you think? What would you like to prefer to see in Krita/Karbon?

 All four projects would be amazing. Unfortunately we can't clone you four
times ;), so we have to decide. I for myself would prefer the first and the
second project.

[Attachment #5 (text/html)]

<div class="gmail_quote">On Tue, Feb 24, 2009 at 7:04 PM, <a href="mailto:LukasT.dev@gmail.com" \
target="_blank">LukasT.dev@gmail.com</a> <span dir="ltr">&lt;<a \
href="mailto:lukast.dev@gmail.com" target="_blank">lukast.dev@gmail.com</a>&gt;</span> \
wrote:<br>

<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt \
0pt 0pt 0.8ex; padding-left: 1ex;">Hi list, 
I would like to make GSoC 2009 proposal one more time as student for KOffice 
with focus on Krita or Karbon. I already did GSoC 2008 successfully with with 
really great mentor boud for Krita. I gathered some experiences with Krita, I 
contributed after GSoC also. My goal is to use this experiences to make really 
cool project with nice results. 
 
As you may know, there will be less proposals accepted in Google compared to 
year 2008. I would like to focus myself on stuff that are really important for 
KOffice, so I would like to discuss my list of ideas with you so that I can 
focus on few proposals and apply with them. I&#39;m looking for advices what is 
really important. 
 
I&#39;m also looking for mentor. I talked with boud and Cyrille and they both 
seems to not to mentor this year. So who is going to mentor for KOffice? 
 
I already made some cuts (with boud and Cyrille) before contacting list. 
 
I sorted the ideas according my preferences and they contains comments from 
Cyrille sometimes: 
 
1. 3D model of brush 
 
Paintops are sometimes also modelled as 3D device. I gathered some 
experiences with 3D last semester and I would managed to do some 3D 
model. 
 
I already gathered some publications about various brushes (even 3D) 
and Baxter work also contains useful informations too. 
<a href="http://wiki.koffice.org/index.php?title=User:LukasT" \
target="_blank">http://wiki.koffice.org/index.php?title=User:LukasT</a> I also received \
some GPL2 code from a student who did 3D brush as thesis and it is waiting to be ported to \
Krita 
Excepted results: paintop that is based on 3D model and has stronger 
physical attributes than current brush engines. Bidirectional painting 
support. 
 
Something like this in short <a href="http://youtube.com/watch?v=W4suJCMdnsU" \
target="_blank">http://youtube.com/watch?v=W4suJCMdnsU</a> and this <a \
href="http://youtube.com/watch?v=CNfAXjRQkr0" \
target="_blank">http://youtube.com/watch?v=CNfAXjRQkr0</a> 
boud and Cyrille: +1</blockquote><div> + 1 from me too :) </div><blockquote \
class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt \
0.8ex; padding-left: 1ex;"> 2. Diffusion curves 
<a href="http://artis.imag.fr/Publications/2008/OBWBTS08/" \
target="_blank">http://artis.imag.fr/Publications/2008/OBWBTS08/</a> I already emailed \
authors: Main problems: 
* solving a Poisson equation AFTER rasterization. 
This implies that: 
1) The rasterization is not a classical one, so you wouldn&#39;t be able to 
represent the images in classical vector formats like PostScript, for 
example. 
2) The heat diffusion is quite slow when solving it on the CPU, so we used 
the GPU. But this restricts the use of Diffusion Curves to people who 
have good GPUs. 
3) We can solve Poisson equation on big images, but not on infinite ones. 
 
Excepted results: New tool - diffusional curves in Krita/Karbon or 
both (don&#39;t know about possibilities of sharing this tool) 
 
Cyrille added: 
Deffinitively for Karbon, and also very cool. The point 2) isn&#39;t really a 
problem, if you use the correct programmation language, I invite you to look 
at OpenCL for this, it should be available in Nvidia and ATI proprietary 
drivers, shortly. And it will come as open source in the next two or three 
years. The advantage of OpenCL is tht it can run on GPU or CPU.</blockquote><div> I think \
this is for Krita. The main problem for Karbon would be that SVG doesn&#39;t support this \
(yet). While this really should use OpenCL I have my doubts that OpenCL will be ready before \
the gsoc starts Other than that I think it would be very cool project and I would love \
to see it in Krita. </div><div> </div><blockquote class="gmail_quote" style="border-left: \
1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> 3. Advanced \
interpolation There is need for good scaling algorithm for images in Krita and maybe 
in other apps too. Lately I found this discussion interesting 
<a href="https://lists.xcf.berkeley.edu/lists/gimp-developer/2009-January/021512.htm" \
target="_blank">https://lists.xcf.berkeley.edu/lists/gimp-developer/2009-January/021512.htm</a> 
 
Basically it talks about various improved scaling and interpolating 
algorithms. So the aim of this project would be to do some kind off 
research and implement as much as possible many advanced interpolating 
algorithms so 
that we can compere. 
 
Excepted result: better scaling possibilities of graphics data in KOffice, 
 
4. Support for animation 
This would be quite hard. Make 2D renderer. MNG or own file format for 
saving, export every frame as [PUT FILEFORMAT HERE] 
I had idea in which every layer is a scene and for start few things 
could be animated: 
* Basic motion 
* Filters and it&#39;s values for the whole layer 
* Paintops and their movements 
* Geometric transformations +Warping 
I would propose some kind of system that Blender uses and in Blender 
it is call IPO curves. 
I don&#39;t know if this would be for Krita or Karbon. 
 
Inspiration: Blender, <a href="http://www.les-stooges.org/pascal/pencil/" \
target="_blank">http://www.les-stooges.org/pascal/pencil/</a> ,Gimp Animation Pack GAP, 
 
Excepted results: Timeline, animate able KisObjects, animation support 
for filters and import/export filters for it. It should not just flip layers. 
 
Cyrille: 
While I love that idea, and would like to see it happening in the future 
(possibely with the upcoming Qt&#39;s animation framework), including animated 
svg, I fear this is too huge for a google summer of code project.</blockquote><div> Making \
movies would be pretty cool. MNG never really took off and with html 5 coming we will see open \
source web video in the future. I would prefer if we had a common infrastructure for Karbon \
and Krita here, but as Cyrille already said it will be a lot of work just to get the \
infrastructure and will also need new guis. </div><blockquote class="gmail_quote" \
style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: \
1ex;">

What do you think? What would you like to prefer to see in Krita/Karbon?</blockquote><div> \
All four projects would be amazing. Unfortunately we can&#39;t clone you four times ;), so we \
have to decide. I for myself would prefer the first and the second project. \
</div></div>

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