Re: [osg-users] hiding objects from a cloned scenegraph hides the original...
Hi Ted, A shallow copy will share as much as possible of the data below the object you are calling clone on. Only a deep copy will force the data itself to be copied. As a general note, you want to avoid duplicating data as much as possible, so share as much as possible. In you case it might not be necessary to clone anything and share the whole scene graph between views. You can use a combination of NodeMask and Camera CullMask (see osg::CullSetting from which osg::Camera is derived), to enable each view to just see a portion of the scene. Robert. On Mon, Nov 1, 2010 at 9:34 PM, Ted Morris ted.mor...@gmail.com wrote: Hi, I am cloning a scenegraph for a 2nd viewer for osgCompositeView. Everytime I setNodeMask(0x0) to some objects that is part of the cloned node the objects in the original disappears as well, unless it is a CopyOp::DEEP_COPY_ALL. The problem with using DEEP_COPY_ALL is that it makes the UpdateCallback process a mess-- since I then have to contrive other mechanisms to tie in the existing, callbacks for objects in the original scene with the 'secondary' view's cloned scene graph. Or, I have to end up walking the scenegraph tree, and doing appropriate clone level flags, one by one?? Thanks to all in advance! Ted -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=33279#33279 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] hiding objects from a cloned scenegraph hides the original...
ah! -- it is so obvious once you said it. ;) thanks. t On Tue, Nov 2, 2010 at 4:34 AM, Robert Osfield robert.osfi...@gmail.comwrote: Hi Ted, A shallow copy will share as much as possible of the data below the object you are calling clone on. Only a deep copy will force the data itself to be copied. As a general note, you want to avoid duplicating data as much as possible, so share as much as possible. In you case it might not be necessary to clone anything and share the whole scene graph between views. You can use a combination of NodeMask and Camera CullMask (see osg::CullSetting from which osg::Camera is derived), to enable each view to just see a portion of the scene. Robert. On Mon, Nov 1, 2010 at 9:34 PM, Ted Morris ted.mor...@gmail.com wrote: Hi, I am cloning a scenegraph for a 2nd viewer for osgCompositeView. Everytime I setNodeMask(0x0) to some objects that is part of the cloned node the objects in the original disappears as well, unless it is a CopyOp::DEEP_COPY_ALL. The problem with using DEEP_COPY_ALL is that it makes the UpdateCallback process a mess-- since I then have to contrive other mechanisms to tie in the existing, callbacks for objects in the original scene with the 'secondary' view's cloned scene graph. Or, I have to end up walking the scenegraph tree, and doing appropriate clone level flags, one by one?? Thanks to all in advance! Ted -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=33279#33279 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] hiding objects from a cloned scenegraph hides the original...
Hi, I am cloning a scenegraph for a 2nd viewer for osgCompositeView. Everytime I setNodeMask(0x0) to some objects that is part of the cloned node the objects in the original disappears as well, unless it is a CopyOp::DEEP_COPY_ALL. The problem with using DEEP_COPY_ALL is that it makes the UpdateCallback process a mess-- since I then have to contrive other mechanisms to tie in the existing, callbacks for objects in the original scene with the 'secondary' view's cloned scene graph. Or, I have to end up walking the scenegraph tree, and doing appropriate clone level flags, one by one?? Thanks to all in advance! Ted -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=33279#33279 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
