Re: [osg-users] Gui widgets that expands on more views
HI Noè. You cold use a Camera draw callback to implement custom rendering. Cheers, Robert. On Sat, 17 Aug 2019 at 17:00, Noè Murr wrote: > Hi Robert, > > Thank you for the answer. I like this method: > > "One way is to create a Camera (with otho projection) and subgraph to > render the widgets and assign this Camera to the GraphicsWindow and set > the Camera's RenderOrder so it get drawn last." > > As I have only to draw 2D widgets, can I create a fake camera that does > not need the scene graph interface where I can draw directly in openGL? > > If I can, how should I do that? > > Cheers, > Noè > > On 17/08/19 15:36, Robert Osfield wrote: > > HI Noè, > > > > You can do an overall like this several ways. One way is to create a > > Camera (with otho projection) and subgraph to render the widgets and > > assign this Camera to the GraphicsWindow and set the Camera's > > RenderOrder so it get drawn last. Another way is create another View > > and then have this Camera below that. > > > > I think the osgsequence and osgtesselate examples illustrates this type > > of usage case. Do a search for Camera in the examples should illuminate > > other ways Camera's are used. > > > > To toggle on/off the widget overall simply set the Camera's NodeMask to > > 0x0 for switching it off, and back to 0x (or any non zero should > > also do) to switch it back on again. > > > > Robert. > ___ > 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] Gui widgets that expands on more views
Hi Robert, Thank you for the answer. I like this method: "One way is to create a Camera (with otho projection) and subgraph to render the widgets and assign this Camera to the GraphicsWindow and set the Camera's RenderOrder so it get drawn last." As I have only to draw 2D widgets, can I create a fake camera that does not need the scene graph interface where I can draw directly in openGL? If I can, how should I do that? Cheers, Noè On 17/08/19 15:36, Robert Osfield wrote: > HI Noè, > > You can do an overall like this several ways. One way is to create a > Camera (with otho projection) and subgraph to render the widgets and > assign this Camera to the GraphicsWindow and set the Camera's > RenderOrder so it get drawn last. Another way is create another View > and then have this Camera below that. > > I think the osgsequence and osgtesselate examples illustrates this type > of usage case. Do a search for Camera in the examples should illuminate > other ways Camera's are used. > > To toggle on/off the widget overall simply set the Camera's NodeMask to > 0x0 for switching it off, and back to 0x (or any non zero should > also do) to switch it back on again. > > Robert. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Gui widgets that expands on more views
HI Noè, You can do an overall like this several ways. One way is to create a Camera (with otho projection) and subgraph to render the widgets and assign this Camera to the GraphicsWindow and set the Camera's RenderOrder so it get drawn last. Another way is create another View and then have this Camera below that. I think the osgsequence and osgtesselate examples illustrates this type of usage case. Do a search for Camera in the examples should illuminate other ways Camera's are used. To toggle on/off the widget overall simply set the Camera's NodeMask to 0x0 for switching it off, and back to 0x (or any non zero should also do) to switch it back on again. Robert. On Sat, 17 Aug 2019 at 11:58, Noè Murr wrote: > Hi, > > I'm trying to resolve a complicated task. > > I have a Graph that will be rendered by 4 cameras in 4 different views > using a composite viewer (see the first attachment). > > I want to render a 2D element that expands on all the views as you can > see in > the second attachment. > > Is there a way to do that in OpenSceneGraph? > > Cheers, > Noè Murr > ___ > 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] Gui widgets that expands on more views
Hi, I'm trying to resolve a complicated task. I have a Graph that will be rendered by 4 cameras in 4 different views using a composite viewer (see the first attachment). I want to render a 2D element that expands on all the views as you can see in the second attachment. Is there a way to do that in OpenSceneGraph? Cheers, Noè Murr ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
