[AG-TECH] Whiteboard for AG

Derek Piper dcpiper at indiana.edu
Mon Nov 22 09:13:05 CST 2004

	Thank you for shedding light on the subject :)
	I'm wondering this though, how do AccessGrid and MLB work together 
since MLB appears to need it's own multicast port. It should be possible 
to add it as a service, yes? Does anyone have an AccessGrid service that 
will tie MLB into an AG session? MLB looks like it does a lot that the 
AG client does (particpant list etc.), so maybe that's overly 
complicated for what AccessGrid would need.
	The Shared Image Viewer is much more like what I was wanting to find, a 
nice simple app. A GUI 'palette' etc. would be nice (Dave, if you're 
reading :) :)). The only problem I've found is I can never seem to clear 
the 'whiteboard' on the remote sides, the venue seems to 'remember' all 
the markup that was ever in the session, even if the 'erase venue 
markup' is checked. You're right it's nearly there though.



Christoph Willing wrote:
> On 20/11/2004, at 3:54 AM, Derek Piper wrote:
>>     Hi,
>>     I was wondering if anyone has used the LBNL or UCL whiteboard 
>> programs ('wb' or 'wbd' respectively) with AccessGrid sessions. They 
>> don't appear to be maintained any more though. Are there any good 
>> whiteboard solutions out there for use on the AccessGrid?
> Derek,
> When we first started doing AG stuff here in Australia, a few sites 
> played with MLB (Media Lecture Board). Its really only due to lack of 
> demand by users that we haven't perservered. I notice that there was a 
> new release for Windows & Linux in May 2004, so perhaps its still a 
> viable project. Its at:
>     http://www.informatik.uni-mannheim.de/pi4/projects/mlb/
> Also (perhaps a bit out of left field), I've been looking at Dave 
> Semeraro's Shared Image Viewer at:
>     http://cherokee.ncsa.uiuc.edu/~semeraro/Stupid_AG_Tricks/default.htm
> Although its meant for sharing views of images, it also has a mark up 
> mechanism i.e. anyone in the session can draw on the image and this 
> drawing is seen by all the participants. Although the mark up stuff is 
> still in very early stages of its development, it strikes me that this 
> combination of image viewer and mark up mechanism is really the 
> beginning of a whiteboard style of program.
> The current Shared Image Viewer is all written in wxPython, so  is 
> completely Windows & Linux compatible. Unfortunately the Windows & Linux 
> AG 2.3 software releases use different wxPython versions, which will 
> affect (badly) most Linux AG users trying the SharedImageViewer. There 
> is a Share Image Viewer version which fixes this problem at:
>     http://www.ap-accessgrid.org/AG2/siv.html
> which I'm hoping will be included in Dave's official release.
> chris
> Christoph Willing                        Ph: +61 7 3365 8350
> QPSF Access Grid Manager
> University of Queensland

Derek Piper - dcpiper at indiana.edu - (812) 856 0111
IRI 323, School of Informatics
Indiana University, Bloomington, Indiana

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