[Bf-committers] Bf-committers Digest, Vol 56, Issue 41
Damien Marchal
damien.marchal at lifl.fr
Mon Mar 30 09:05:55 CEST 2009
============ Reply to =======
Message: 4
Date: Sun, 29 Mar 2009 18:38:26 +0200
From: Ton Roosendaal <ton at blender.org>
Subject: Re: [Bf-committers] Multi-Touch Based User Interface for
Blender
To: bf-blender developers <bf-committers at blender.org>
Message-ID: <bc401cbbabe879b64cb80734208a0aa7 at blender.org>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
=============================
Hi all,
I'm not sure this is the proper list to discuss this subject but as I'm
cited by Ashish I'm jump into the thread.
I'm the author of the third link given by Ashish (an unofficial blender
version with TUIO supported in the game engine).
http://forge.lifl.fr/PIRVI/wiki/MTUtils/blenderTUIO
I fully agree with Ton that making a MT blender interface is really an
hard work in which it is unclear what will be the users benefit in
erm of workflow improvement. On my side having multi touch support in
the game engine was an easy step and thus I'm still considering
to submit it for integration (not yet done due to lack of time and
remaining bugs when loading/saving files).
As there is quite a lot of interest in the field maybe all the
blender+multi-touch people could form a working group ?
With the following target:
1) evaluate and implement MT support for both the Game Engine and in the
Modeller (with mt you can do rotation+translation+scaling of an object
with one movement)
2) pre-review the code made and test it on multiple touch devices,
2) submit the code for review and integration in the official bender trunk
Can the blender foundation host a mailing list for such a topic
(otherwise I can create one) ?
and second issue is there people interrested to participate ?
Cheers,
Damien.
===============================
Message: 4 Date: Sun, 29 Mar 2009 18:38:26 +0200 From: Ton Roosendaal
<ton at blender.org> Subject: Re: [Bf-committers] Multi-Touch Based User
Interface for Blender To: bf-blender developers
<bf-committers at blender.org> Message-ID:
<bc401cbbabe879b64cb80734208a0aa7 at blender.org> Content-Type: text/plain;
charset=ISO-8859-1; format=flowed Hi Ashish, I think Multi-touch is a
great topic to work on, and indeed with 2.5 we have a much better basis
in the code to look into that. There's three big 'howevers' though. :) -
The 2.5 code isn't ready for this yet. It's possible, but it needs
additional architecture-level work on the event system to make it work.
I would rather only do that after we've validated this with a first
(beta) 2.5 release. - On our submission page we have a couple of
requirements, of which one is "What would this benefit Blender users". I
think the amount of users having access to such devices is still very
low, and - afaik - nobody in our core developers team (or mentors) has
it either, so we cannot verify this work. - Several developers, also who
work for companies producing such devices, have already expressed
interest to work on it. To me it seems that work on device-support
should first come from people who manufacture them. That's one of the
reasons why open source works so well, and it doesnt require Google
Summer money really. -Ton-
------------------------------------------------------------------------
Ton Roosendaal Blender Foundation ton at blender.org www.blender.org
Blender Institute BV Entrepotdok 57A 1018AD Amsterdam The Netherlands On
28 Mar, 2009, at 22:14, Ashish Kumar Rai wrote:
> > Respected Sir,
> >
> > I am a GSoC enthusiast and I would like to work on the development of
> > a Multi-touch based User Interface for Blender.
> >
> > Multi-touch denotes a set of interaction techniques which allow
> > computer users to control graphical applications with several fingers.
> > The multi-touch technology is in a development stage and offers
> > immense opportunities - both technical and economical. It will help in
> > putting computers to a variety of new applications and open up new
> > kinds of avenues. The technology heralds a new ear in the way we
> > interact with computers. It provides the users a more natural way of
> > interaction with computers.
> >
> >
> > I feel that Multi-touch has started to show that it will be the
> > next-big-thing in the field of User Interface.
> >
> > It is much more intuitive and friendly way for an architect or a
> > designer to develop and show models with his both hands by directly
> > touching the models instead of using the mouse as a pointer device
> > which is more abstract.
> >
> > With the coming of Blender 2.5 and the discussions at the forum, I
> > feel a multi-touch based user-interface for blender is imminent.
> >
> > As the UI model for Blender 2.5 is based on MVC ( "Model, View,
> > Controller" ) which proposes to strictly separate code for "Model"
> > (the data) from "View" (the interface, visualizations) and from
> > "Controller" (the operations on data). ( MVC -Wikipedia ) , this will
> > greatly help in the implementation of methods for using multi-touch
> > devices with Blender.
> >
> > The multi-touch device can be exposed as a blender sensor and several
> > Blender objects can have a muti-touch sensor and thus can receive the
> > same events. The touch events can be sent to a gesture recognition
> > module so that complex gestures can also be used for effectively using
> > the multi-touch user-interface besides preliminary gestures like
> > navigation by single touch, zooming , roatation etc.The Blender
> > sensors will be connected to a controller which when triggered by an
> > event will then by using the generic data and tools api will do the
> > required operation.
> >
> > Using an ANN based gesture recognition module will let the user
> > customize and train their interactive-surface to do the fucntions as
> > required on a particular gesture.
> >
> > References :
> > The following projects can be very helpful in completing the project
> > and saving time -
> > 1 http://grafitiproject.files.wordpress.com/2008/12/grafiti.pdf
> > 2 http://code.google.com/p/sparsh-ui/
> > 3 http://forge.lifl.fr/PIRVI/wiki/MTUtils/blenderTUIO
> >
> >
> > I am very much hopeful that intelligent multi-touch surfaces will
> > start replacing? desktops and laptops that we see as shown very much
> > in hollywood movies and to some extent in high profiles labs and
> > military installations. [ commandline will however exist too :) ]? I
> > have been working with MT stuff for over one-and-half years and have
> > developed one of my own FTIR based setup (?
> > http://www.youtube.com/watch?v=wp8SpXfChkY )? and currently developing
> > a laser based planar MT surface. On the software side I have also
> > build a simulator ( QMTSIM ) for fast and efficient development of
> > Multi-Touch software even if you dont own a MT surface.
> >
> >
> > I am looking forward for a positive reply from your side and I feel
> > that you will make me conversant about my prospects for? this project
> > under your guidance. I am hoping to make a full proposal with a time
> > line and the deliverables? and start working if you think that this
> > could be a viable GSoC project.
> >
> > Waiting for your comments and suggestions eagerly !!
> >
> > --
> > Cheers,
> >
> > Ashish Kumar Rai
> > Electronics Engineering Department,
> > IT-BHU
> > _______________________________________________
> > Bf-committers mailing list
> > Bf-committers at blender.org
> > http://lists.blender.org/mailman/listinfo/bf-committers
>
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