On Mon, Aug 22, 2011 at 11:20 AM, Stefan Eilemann [via Software] <
[email protected]> wrote:
> Hi,
>
> On 22. Aug 2011, at 10:13, smadhueagle wrote:
>
> > I am starting from the osgScaleViewer example as the base code. The
> question
> > I have is - exactly where do I make changes (add geometry) to the
> Scenegraph
> > in the source code ? The equalizer documentation seems to suggest that
> the
> > right place to make changes to the scenegraph is Node::frameStart(.)
> > function. However, this does not seem to work. I see the geometry being
> > added on the master application, but I do not see anything happening on
> the
> > render nodes. What am I doing wrong ?
>
> There are two approaches to distributing scenegraph changes:
>
> 1) A distributed scene graph. Modified by the application. Tracks changes
> internally, app commits master copy before frameStart and clients sync() in
> Node::frameStart
> 2) A distributed application. App commits change messages to all nodes,
> which execute them on their SG copy in Node::frameStart
>
> I'm guessing you're looking into approach 2) and you're missing the part of
> distributing the change messages to all nodes. One way to get there is to
> add the relevant per-frame events to the FrameData, and do a per-node apply
> operation using these events in Node::frameStart.
>
>
Thank you! Then my understanding is correct. Yes, I am taking approach 2)
for now. I do set an "update" flag (in FrameData) in response to a keyboard
event in config.cpp. I then query this flag to trigger the changes in
Node::frameStart. Doesn't seem to have the desired effect though. I'll try
to do a simpler test to see if it works.
>
> > I am fairly new to Equalizer ... If you are interested in looking at the
> > code, please go here:
> > https://github.com/smadhueagle/osgBulletEqualizer
>
> Thanks for sharing - I'll check it out.
>
>
> HTH,
>
> Stefan.
>
>
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