how to run the demos?

[Erwin Coumans]

I'm not familiar with Java or .jnlp files but want to run the demos.

Is there some standalone demo or webpage to run the demos?
Thanks,
Erwin

[mo]

Hi Erwin :)

I think the easy way is to install Java Runtime Environment, that
should enable you to run the webstart files (.jnlp) by clicking the
demo link/download from the browser. Unfortunately I didn't attempt to
make it run inside an applet, though it should not be hard to do.

http://www.java.com/en/download/index.jsp

The install should be pretty quick.

If you are not happy with that solution, let me know and I
will try and make the demo available in some other way, like an applet
or so. I run Ubuntu, and using OpenJDK. But im not sure if it is
available for windows or Macos.

[mo]

btw, the 0.8 is the one with the NNCG solver.

- Click and drag with the mouse to manipulate objects.
- Hold down space to move objects vertically

Actually, I should put up some more demos really... Also a demo
without deactivation/sleeping would be a nice.

/Morten

[Erwin Coumans]

Hi,

If you could make it a java applet, that would be great.
I rather not install the java sdk/jdk on this machine at work.

If I got the time, I might port the NNCG to C++ for Bullet.
Thanks a lot,
Erwin

[mo]

Hi again

I posted a html file under Downloads, that holds an applet in it. I
managed to make it work on my Ubuntu 10.10, with using the sun/oracle
java plugin (not openJDK, which I could not get working with JOGL).
Anyways, give it a go.

http://code.google.com/p/jinngine/downloads/list

I tried it on a single Windows7 machine, and it worked in chrome.
Although it ran way too fast, because (i think) vsync was not enabled
in the driver on that machine.

/mo :)

[Dirk Gregorius]

I tried the applet and it crashes on my computer under Windows7 64Bit
Professional and Firefox. And don't get a decent error message that I
could post.

Cheers,
-Dirk

[Morten Silcowitz]

Yeah, applets are pretty hard getting to work with OpenGL
extensions... or alternatively, I just suck at getting it to work :)

I found myself a winows machine, that I'll try it on now. I'll also
make a new webstart demo that is equivalent to the content of the
applet.

I had good experience with java webstart, as it seems to work in most
places/OS, so I would recommend using that way. Installing a JRE is
easy, and it should be easy to uninstall again.

[Dirk Gregorius]

I tried the webstart demo too and it crashed as well. If you have a
new applet/webstart feel free to send it to me for testing.

Cheers,
-Dirk

[Morten Silcowitz]

Weird, I just cant get it to fail on windows. I ran the applet in both
Chrome, IE, and Firefox. I attached a screenshot with some specs on
the Windows os.

Dirk, could your java plugin version be needing an update?

[Dirk Gregorius]

The Java plugin is up to date. It might be the 64bit - maybe. I check
on my laptop later this afternoon.

Thanks for the effort,
-Dirk

[mo]

FYI, I added a webstart version of the applet demo under Downloads.

http://code.google.com/p/jinngine/downloads/list

Hope you can run it. As another option, I can attempt to creat a stand-
alone executable for windows, that has the JRE and everything within
it. I just have to check up on how that is done. Its a shame that all
this trouble actually comes from the visualization part, runing opengl
in java etc. Jinngine itself should run easily on any jvm (1.6+)

On Oct 15, 1:18 pm, Dirk Gregorius <d...@dirkgregorius.de> wrote:
>   The Java plugin is up to date. It might be the 64bit - maybe. I check
> on my laptop later this afternoon.
>
> Thanks for the effort,
> -Dirk
>
> Am 15.10.2010 13:06, schrieb Morten Silcowitz:
>
>
>
>
>
>
>
> > Weird, I just cant get it to fail on windows. I ran the applet in both
> > Chrome, IE, and Firefox. I attached a screenshot with some specs on
> > the Windows os.
>
> > Dirk, could your java plugin version be needing an update?
>

> > On Fri, Oct 15, 2010 at 12:23 PM, Dirk Gregorius<d...@dirkgregorius.de>  wrote:
> >>   I tried the webstart demo too and it crashed as well. If you have a new
> >> applet/webstart feel free to send it to me for testing.
>
> >> Cheers,
> >> -Dirk
>
> >> Am 15.10.2010 12:21, schrieb Morten Silcowitz:
> >>> Yeah, applets are pretty hard getting to work with OpenGL
> >>> extensions...  or alternatively, I just suck at getting it to work :)
>
> >>> I found myself a winows machine, that I'll try it on now. I'll also
> >>> make a new webstart demo that is equivalent to the content of the
> >>> applet.
>
> >>> I had good experience with java webstart, as it seems to work in most
> >>> places/OS, so I would recommend using that way. Installing a JRE is
> >>> easy, and it should be easy to uninstall again.
>

> >>> On Fri, Oct 15, 2010 at 10:49 AM, Dirk Gregorius<d...@dirkgregorius.de>

[Dirk Gregorius]

Thanks! It is still not running, but I get an error message now. It
says that some cache needs to
be enabled for nativelib. Ideas?

-Dirk

[Morten Silcowitz]

Yes I have seen that error, it happened when I tried to turn of
caching in the java-plugin control panel. I've spend 3 seconds making
this screenshot where the setting is found in Ubuntu. Should be almost
the same on windows.

I think this setting is normally on by default.

[Dirk Gregorius]

Ok, works :). Thanks for the help.

The demo looks great! Though I notice some jittering before deactivation
and the capsule makes some strange changes in the the direction it is
moving. Something like a wrong normal or so.

-Dirk

[Morten Silcowitz]

Thanks!

I think i can recognize something in your description, might be v-sync
that is missing? When I been running the demo on a machine where (for
some reason) v-sync is not enabled , then the demo just runs full
speed, and time is the stretched abruptly depending on the time it
takes to calculate a single frame. This produces an effect that sounds
similar to what you describe.

Guess I was under some naive impression that v-sync was becoming
standard everywhere these days. I noticed this problem on a windows
machine with an ATI card. I should update the demos to not rely so
heavily on vsync, and ensure a fixed framerate by other means.

Do you think v-sync / lack of fixed framerate could be the problem?

[Dirk Gregorius]

I rely on v-sync myself in my demos so it is active. But you are right
the demo look a little fast. Maybe it is related to Java and OpenGL.

[mo]

Dirk, is your demos available somewhere online?

On Oct 18, 4:29 pm, Dirk Gregorius <d...@dirkgregorius.de> wrote:
>   I rely on v-sync myself in my demos so it is active. But you are right
> the demo look a little fast. Maybe it is related to Java and OpenGL.
>
> Am 18.10.2010 15:06, schrieb Morten Silcowitz:
>
>
>
>
>
>
>
> > Thanks!
>
> > I think i can recognize something in your description, might be v-sync
> > that is missing? When I been running the demo on a machine where (for
> > some reason) v-sync is not enabled , then the demo just runs full
> > speed, and time is the stretched abruptly depending on the time it
> > takes to calculate a single frame. This produces an effect that sounds
> > similar to what you describe.
>
> > Guess I was under some naive impression that v-sync was becoming
> > standard everywhere these days.  I noticed this problem on a windows
> > machine with an ATI  card. I should update the demos to not rely so
> > heavily on vsync, and ensure a fixed framerate by other means.
>
> > Do you think v-sync / lack of fixed framerate could be the problem?
>

> > On Mon, Oct 18, 2010 at 1:51 PM, Dirk Gregorius<d...@dirkgregorius.de>  wrote:
> >>   Ok, works :). Thanks for the help.
>
> >> The demo looks great! Though I notice some jittering before deactivation and
> >> the capsule makes some strange changes in the the direction it is moving.
> >> Something like a wrong normal or so.
>
> >> -Dirk
>
> >> Am 18.10.2010 13:08, schrieb Morten Silcowitz:
> >>> Yes I have seen that error, it happened when I tried to turn of
> >>> caching in the java-plugin control panel. I've spend 3 seconds making
> >>> this screenshot where the setting is found in Ubuntu. Should be almost
> >>> the same on windows.
>
> >>> I think this setting is normally on by default.
>

> >>> On Mon, Oct 18, 2010 at 12:12 PM, Dirk Gregorius<d...@dirkgregorius.de>

[Dirk Gregorius]

Nope, but I did send you some demos iirc. Anyway, drop me a mail I
send again. I have a bunch of demo scenes and a comparison framework
between Havok, PhysX, Bullet and my stuff.

Cheers,
-Dirk

[Erwin Coumans]

Thanks a lot for the work.
Downloading and clicking on the local html page works for me under
Windows 7, 64bit:

http://code.google.com/p/jinngine/downloads/detail?name=jinngine.applet.0.8.html&can=2&q=

Are there some options to change scenes?
It would be nice to add some stacking demos, because the current demo
doesn't look 'impressive' :-)
Thanks,
Erwin

[mo]

Good that it works :)

No there isn't any other scene in the applet.. I'll add some more and
post here when they are ready.

On Nov 12, 1:05 am, Erwin Coumans <erwin.coum...@gmail.com> wrote:
> Thanks a lot for the work.
> Downloading and clicking on the local html page works for me under
> Windows 7, 64bit:
>

> http://code.google.com/p/jinngine/downloads/detail?name=jinngine.appl...