Hi Bruce, You can use the bit masks as you suggest, although typically one would just use the left or right eye for mono.
W.r.t Present3D, there isn't any editor beyond an off the shelf xml/text editor. You can read p3d files using the p3d plugin that is now built as part of the core OSG. This allows you to use presentation directly in most standard osgViewer based apps like osgviewer. There is an simple example of .p3d file in OpenSceneGaph-Data. Robert. On Fri, Feb 12, 2010 at 5:45 PM, Bruce Wheaton <[email protected]> wrote: > OK, great, I figured this had been dealt with. That's a nice, full example, > thanks. I'll get my head around it. > > I was a bit worried about this approach and the complexity of 'doubling' my > graph, but it seems that all I have to do is double the one Geode - which is > a leaf, so has no children I have to deal with, and then do some minor > offsets, or supply a different texture in the update. > > And, as I read it, cullmasks are arbitrary masks that I can set up, then > assign to different nodes and cameras for this exact purpose. So I can set > up: > > Mono 0x00000001 > Left 0x00000002 > Right 0x00000004 > Assign those to cameras, > > And then make the left node mask 0x00000003 and the right 0x00000004. And I > should be able to get the node's cullmask and decide what to do in an update > callback - ideally the same callback for each geode. > > I don't suppose you've a handy example for image streams as well, do you? > > And yes, I saw you did Present3D. It sounds fantastic, but there's no editor > is there? That, and the 3D, makes it hard to see examples. If there was, I > would try to support that format in my app, and then recommend the editor > for clients. Thank you for putting that in the core. > > Oh, I see in the wiki, Present3D has stereo movie support. Very cool - I'll > dig through there too - Have to update from OSG 2.8 anyway. > > Bruce > > > On Feb 12, 2010, at 12:57 AM, Robert Osfield wrote: > >> I've done lots of 3D video work with the OpenSceneGraph/Present3D over >> the years. There is even an example osgstereoimage that shows how to >> do it using two subgraph each with their own NodeMask which is matched >> to the left eye/right eye cull masks. >> >> Robert. >> >> On Fri, Feb 12, 2010 at 1:08 AM, Bruce Wheaton <[email protected]> >> wrote: >>> >>> I'm about to drop OSG into an app and I'm looking at how to do various >>> things. The built-in stereo support is great, but I'm not sure how to do >>> something that's easy in my current code - handle pre-split images. >>> >>> I have to take a variety of images, mainly in streams, and handle them >>> correctly in the left and right eye. The formats I deal with are: >>> >>> 1. Dual-stream, for instance two images, or two tracks in a Quicktime >>> movie >>> or AVI file (3D Blu-ray too, someday), >>> 2. Left-Right, >>> 3. Top-Bottom, >>> 4. Possibly, interleaved. >>> >>> Right now I've dealt mostly with 2 & 3, by padding two sets of tex coords >>> along with 3D images. I intend to deal with 1 and 4 by splitting >>> textures, >>> maybe using 2 FBO attachments. >>> >>> The issues/options seem to be: >>> >>> Draw the images billboarded and at screen depth, so there's no extra >>> parallax introduced. >>> >>> It would be great to be able to mask or draw a frame 'in-front' of the >>> image, even though it's at zero, so the edges appear to be at the same >>> depth >>> as the content (or can be manipulated). >>> >>> Then I can either use a cull callback, since I believe cull runs once per >>> eye, and reset tex-coords and/or which texture (or attachment of an FBO) >>> to >>> use, >>> or place a duplicate item of each 3D texture in the graph, set it >>> correctly >>> on update, then set the stereo cullsettings correctly. >>> >>> Any suggestions? Did I miss a better technique? >>> >>> Regards, >>> >>> Bruce Wheaton >>> >>> >>> _______________________________________________ >>> osg-users mailing list >>> [email protected] >>> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >>> >> _______________________________________________ >> osg-users mailing list >> [email protected] >> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
