[Bf-committers] Fwd: [Bf-docboard] iPad/tablet

Mon Aug 15 21:16:42 CEST 2011

Android C++ support is fairly OK,
a recent NDK even support the STL template library.

Some people can play Blender .blend files with Bullet/Ogre/Lua on Android:
http://gamekit.org/forum/viewtopic.php?f=9&t=29&start=50#p732

Cheers,
Erwin

On 15 August 2011 10:45, Campbell Barton <ideasman42 at gmail.com> wrote:

> Quick note since you mention events C <-> Java.
>
> Using CMake and the advanced build option - WITH_GHOST_SDL builds
> blender's windowing system against SDL 1.3 which is available on
> android and may also help run blender on
> wayland/haiku/syllable/directfb/*other exotic windowing systems*.
> I've been using blender with SDL (rather than X11) since it was added,
> aside from multiple windows which have a text display issue (SDL api
> bug) - it works ok, so perhaps this helps with an android port.
>
> @Alexandr, getting blender running on hand-held/tablet devices could
> be used for the BGE rather then attempting to do modeling, rendering
> etc.
>
> On Tue, Aug 16, 2011 at 3:30 AM, Alexandr Kuznetsov <kuzsasha at gmail.com>
> wrote:
> > Hi.
> >
> > Small company called Autodesk released 123D sculpting app for iPad. After
> > trying out, I understood why they probably won’t have Maya/Max on iPad.
> 123D
> > is mostly unusable with current controls. Only thing a person can do is
> the
> > small changes to models.  The main problem is controller implementation.
> > Rotation gets in the way of sculpting. And zooming results in
> translation.
> > The app requires to use both hands which is not very convenient because
> then
> > iPad is flat on the table or on the laps. If we want to have Blender on
> > tablets, we should rethink gestures/control implementation so it would be
> > easy for a user to manipulate in 3D with two fingers on one hand plus
> maybe
> > a thumb on the other.
> >
> > A month ago I looked into Android NDK. From what I can see, the major
> > problem is C++/Java communication.  The whole UI is in java, so every
> input
> > must be send from Java to C, which is not that hard. The harder part is
> to
> > callback from C to Java. Here we need someone who knows JNI well.
> >
> > As for compiling part, Android NDK provides their own tool chain/compiler
> > which is derived from GCC, so it won’t be a bigger issue. On the other
> hand,
> > Android has limited support for C++ (but almost full for C). Plus pthread
> is
> > crippled so there won’t be any pthread_cancel() and some other functions.
> >
> > OpenGL ES 2.0 is derived from OpenGL 2.0 so hopefully a couple wrapper
> > functions will solve absence of glBegin and some other functions.
> >
> >
> >
> > Best Regards,
> >
> > Alexander Kuznetsov
> >
> >
> > On Mon, Aug 15, 2011 at 6:16 AM, Ton Roosendaal <ton at blender.org> wrote:
> >
> >> Hi Salvatore,
> >>
> >> Thanks for the update report, I forward this to the developer list
> >> instead.
> >>
> >> -Ton-
> >>
> >> ------------------------------------------------------------------------
> >> Ton Roosendaal  Blender Foundation   ton at blender.org    www.blender.org
> >> Blender Institute   Entrepotdok 57A  1018AD Amsterdam   The Netherlands
> >>
> >> Begin forwarded message:
> >>
> >> > From: Salvatore Russo <russose at gmail.com>
> >> > Date: 12 August, 2011 22:36:27 GMT+02:00
> >> > To: Blender Documentation Project <bf-docboard at blender.org>
> >> > Subject: Re: [Bf-docboard] iPad/tablet
> >> > Reply-To: Blender Documentation Project <bf-docboard at blender.org>
> >> >
> >> > Hello,
> >> > I planned a long time ago to port my work on BlenderPocket for my
> >> > ipod and I gave up for many reasons:
> >> > 1) because of time constrains (Blenderpocket site is not really
> >> > maintain any more)
> >> > 2) because starting to work, I realized that the iOS world is really
> >> > closed (really!) and I had to do lot of tricks like jailbreak,
> >> > etc... and I imagined that very few people would do that for a
> >> > "proof of concept" like BlenderPocket
> >> > 3) the reason mentioned here with GPL
> >> > Few months ago, I bought an Archos 70IT, with Android. I will not be
> >> > able to invest the time to make Blender work on Android based on
> >> > BlenderPocket work. I am sure that it is not so complicated to do it
> >> > (I could help if someone is interesting in answering any question)
> >> > but my previous experience show that it is not "a couple of day of
> >> > work"... Android is mainly Java, there is a C/C++ compiler for
> >> > Android but I imagine that there will be some small difficulties,
> >> > all Blender library (especially Python) need to be compiled and
> >> > working... and my OpenGL wrapper for OpenGL ES would need some
> >> > rework... but again, if some people needs more detailed information,
> >> > feel free to ask or contact me on my website.
> >> > For the last information, I installed on my Archos 70IT linux
> >> > (debian ARM), "apt-get install blender" installed a crashing Blender
> >> > but I managed to compile it from my tablet and it works quite
> >> > well ;) Even if I have to admit that the capacitive touch screen is
> >> > not so easy to use as the stylus for the resistive screen. I am sure
> >> > that the 2.5 UI fully customizable thanks to Python can make easily
> >> > a "finder touch Interface".
> >> > If some people are interested by the "ARM Blender Package working",
> >> > you can find the package (and the compilation settings) here:
> >> > http://russose.free.fr/GEN8/
> >> > (I will update my Website is some other people are interested, who
> >> > knows...)
> >> > Sorry for this long post,
> >> >
> >> > Salvatore
> >> > http://russose.free.fr/BlenderPocket/
> >> >
> >> >
> >> >
> >> >
> >> >
> >> >
> >> > 2011/8/12 Juan Dario Rodas M. <jdrodas at yahoo.com>
> >> > Hi Willie, Hi everybody!
> >> >
> >> > For a better understanting of the situation between GPL and Apple
> >> > ToS for applications, let me recommend you these posts (yeah, I
> >> > Know, they're long and boring but worth the reading):
> >> >
> >> > Apple's ToS for Apps:
> >> > http://www.apple.com/legal/itunes/us/terms.html#APPS
> >> >
> >> > A "Deepful" analysis of GPL vs Apple's ToS:
> >> >
> >>
> http://mailman.videolan.org/pipermail/vlc-devel/2010-November/077486.html
> >> >
> >> > To make things short, Under ToS, Free App is only for personal
> >> > noncommercial use and you can only share it on five iTunes
> >> > authorized computers.
> >> >
> >> > Under GPLv2, once you have been granted license rights, you may not
> >> > impose further restrictions on the recipient's license rights.
> >> >
> >> > Since Apple ToS is restricting you to use a GPL software just to
> >> > personal noncomercial use, there's a conflict. Since you can only
> >> > share it to your five iTunes authorized devices, there's a conflict.
> >> >
> >> > One of the most noticed cases was the VLC Media Player:
> >> >
> >>
> http://www.zdnet.com/blog/open-source/no-gpl-apps-for-apples-app-store/8046
> >> >
> >> > Workarounds:
> >> >
> >> > 1. Since the blend files are outputs from the program, they're not
> >> > covered under GPL Terms. You might write a "GPL free" app ( what an
> >> > insanity!!!)  to manipulate the Blend file and license it according
> >> > Apple's ToS.
> >> >
> >> > 2. Like Tony said, Change your tablet for something else that truly
> >> > support GPL apps. Android is the first option, not to mention HP
> >> > WebOS or some old fashioned Windows/Linux Tablet.
> >> >
> >> > Hope this might help!
> >> >
> >> > Greetings from Colombia!
> >> >
> >> > Juan Dario Rodas (JuanD)
> >> >
> >> > _______________________________________________
> >> > Bf-docboard mailing list
> >> > Bf-docboard at blender.org
> >> > http://lists.blender.org/mailman/listinfo/bf-docboard
> >> >
> >> >
> >> > _______________________________________________
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> >> > http://lists.blender.org/mailman/listinfo/bf-docboard
> >>
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>
>
>
> --
> - Campbell
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