Re: [osg-users] osgText issue
Hi Brad, I don't have time right now to dive into this topic, but my guess is that the default bounding box for the text is small enough for small feature culling to cull it's parent so that the text itself never gets traversed. Perhaps making the bounding volume invalid until it's been traversed would be one thing to do, so for the first frame it's not culled. You'd only want to do this in the case of screen scaled text. Robert. On Fri, Jun 4, 2010 at 12:06 AM, Brad Huber br...@procerusuav.com wrote: It looks like for some reason my screen aligned, screen sized text is getting small feature culled under certain circumstances. My small feature cull is set to the default (2 pixels) and my text is definitely larger than 2 pixels (when it does show). When I disable small feature culling the text always shows correctly. I’m still not sure why this is happening but is it possible that it is using the world size of my drawables for culling rather than the actual screen size? Also, I’m not sure why this is an intermittent problem. (ie text doesn’t show then I zoom in and it shows, then zoom back out and it still shows). Thoughts? Thanks -Brad From: osg-users-boun...@lists.openscenegraph.org [mailto:osg-users-boun...@lists.openscenegraph.org] On Behalf Of Brad Huber Sent: Thursday, June 03, 2010 10:02 AM To: 'OpenSceneGraph Users' Subject: [osg-users] osgText issue Cedric (or anyone else), I’m running in to a similar issue to what is described here: http://www.mail-archive.com/osg-users@lists.openscenegraph.org/msg15610.html a long time ago by Cedric Pinson. I searched around in the forum archives and didn’t see any resolution to this issue nor did I find anything else similar. Did you ever find a solution to this problem? The way it manifests for me is that there is an osgText object in the visible scene but it doesn’t show until I zoom the camera in on it. Then it appears and if I zoom the camera back out it sticks around. It should be showing the whole time… Thanks -Brad ___ 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] osgText issue
This sounds very much like a problem I had a while ago. Try this: http://www.mail-archive.com/osg-users@lists.openscenegraph.org/msg39201.html -- Terry Welsh / mogumbo 'at' gmail.com www.reallyslick.com / www.mogumbo.com Message: 9 Date: Fri, 4 Jun 2010 09:12:24 +0100 From: Robert Osfield robert.osfi...@gmail.com To: OpenSceneGraph Users osg-users@lists.openscenegraph.org Subject: Re: [osg-users] osgText issue Message-ID: aanlktinmxzysh4oach0c5h_c-rrha0ykc5zrrk7fd...@mail.gmail.com Content-Type: text/plain; charset=windows-1252 Hi Brad, I don't have time right now to dive into this topic, but my guess is that the default bounding box for the text is small enough for small feature culling to cull it's parent so that the text itself never gets traversed. Perhaps making the bounding volume invalid until it's been traversed would be one thing to do, so for the first frame it's not culled. You'd only want to do this in the case of screen scaled text. Robert. On Fri, Jun 4, 2010 at 12:06 AM, Brad Huber br...@procerusuav.com wrote: It looks like for some reason my screen aligned, screen sized text is getting small feature culled under certain circumstances.? My small feature cull is set to the default (2 pixels) and my text is definitely larger than 2 pixels (when it does show).? When I disable small feature culling the text always shows correctly. I?m still not sure why this is happening but is it possible that it is using the world size of my drawables for culling rather than the actual screen size?? Also, I?m not sure why this is an intermittent problem.? (ie text doesn?t show then I zoom in and it shows, then zoom back out and it still shows). Thoughts? Thanks -Brad From: osg-users-boun...@lists.openscenegraph.org [mailto:osg-users-boun...@lists.openscenegraph.org] On Behalf Of Brad Huber Sent: Thursday, June 03, 2010 10:02 AM To: 'OpenSceneGraph Users' Subject: [osg-users] osgText issue Cedric (or anyone else), I?m running in to a similar issue to what is described here: http://www.mail-archive.com/osg-users@lists.openscenegraph.org/msg15610.html a long time ago by Cedric Pinson. I searched around in the forum archives and didn?t see any resolution to this issue nor did I find anything else similar.? Did you ever find a solution to this problem? The way it manifests for me is that there is an osgText object in the visible scene but it doesn?t show until I zoom the camera in on it.? Then it appears and if I zoom the camera back out it sticks around. ?It should be showing the whole time? Thanks -Brad ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] osgText issue
Thanks Robert and Terry. I've left off solving the problem for the moment and I switched to using an AutoTransform node for the same effect. Seems to be working well. BTW it might be nice if osgText had a provision for allowing screen size position/offsets. Eg you can currently use osgText::setPosition to set the texts position In model space but not one for screen space. In my case I was trying to have a label appear to the side of a 3d object in the scene. Seems like a common enough application. That's part of my reason for switching to autotransform. Perhaps I missed another better method (Billboard?). Thanks -Brad From: osg-users-boun...@lists.openscenegraph.org [mailto:osg-users-boun...@lists.openscenegraph.org] On Behalf Of Brad Huber Sent: Thursday, June 03, 2010 5:06 PM To: 'OpenSceneGraph Users' Subject: Re: [osg-users] osgText issue It looks like for some reason my screen aligned, screen sized text is getting small feature culled under certain circumstances. My small feature cull is set to the default (2 pixels) and my text is definitely larger than 2 pixels (when it does show). When I disable small feature culling the text always shows correctly. I'm still not sure why this is happening but is it possible that it is using the world size of my drawables for culling rather than the actual screen size? Also, I'm not sure why this is an intermittent problem. (ie text doesn't show then I zoom in and it shows, then zoom back out and it still shows). Thoughts? Thanks -Brad From: osg-users-boun...@lists.openscenegraph.org [mailto:osg-users-boun...@lists.openscenegraph.org] On Behalf Of Brad Huber Sent: Thursday, June 03, 2010 10:02 AM To: 'OpenSceneGraph Users' Subject: [osg-users] osgText issue Cedric (or anyone else), I'm running in to a similar issue to what is described here: http://www.mail-archive.com/osg-users@lists.openscenegraph.org/msg15610.html a long time ago by Cedric Pinson. I searched around in the forum archives and didn't see any resolution to this issue nor did I find anything else similar. Did you ever find a solution to this problem? The way it manifests for me is that there is an osgText object in the visible scene but it doesn't show until I zoom the camera in on it. Then it appears and if I zoom the camera back out it sticks around. It should be showing the whole time. Thanks -Brad ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] osgText issue
It looks like for some reason my screen aligned, screen sized text is getting small feature culled under certain circumstances. My small feature cull is set to the default (2 pixels) and my text is definitely larger than 2 pixels (when it does show). When I disable small feature culling the text always shows correctly. I'm still not sure why this is happening but is it possible that it is using the world size of my drawables for culling rather than the actual screen size? Also, I'm not sure why this is an intermittent problem. (ie text doesn't show then I zoom in and it shows, then zoom back out and it still shows). Thoughts? Thanks -Brad From: osg-users-boun...@lists.openscenegraph.org [mailto:osg-users-boun...@lists.openscenegraph.org] On Behalf Of Brad Huber Sent: Thursday, June 03, 2010 10:02 AM To: 'OpenSceneGraph Users' Subject: [osg-users] osgText issue Cedric (or anyone else), I'm running in to a similar issue to what is described here: http://www.mail-archive.com/osg-users@lists.openscenegraph.org/msg15610.html a long time ago by Cedric Pinson. I searched around in the forum archives and didn't see any resolution to this issue nor did I find anything else similar. Did you ever find a solution to this problem? The way it manifests for me is that there is an osgText object in the visible scene but it doesn't show until I zoom the camera in on it. Then it appears and if I zoom the camera back out it sticks around. It should be showing the whole time. Thanks -Brad ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] osgText issue
Hi Nick, I am trying to write some more sophisticated input control on top of osg. The one in osgWidget::Input is ok but I am to get it more feature rich. Now, I have all the code almost done, and I come accross one issue: I can't really help except to tell you that Jeremy Moles who wrote osgWidget came across this issue when writing osgWidget::Input, and posted here, and at that time no one had any help to offer. I hope you can find a way to do what you want, and then improve osgWidget::Input with that functionality! J-S -- __ Jean-Sebastien Guayjean-sebastien.g...@cm-labs.com http://www.cm-labs.com/ http://whitestar02.webhop.org/ ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] osgText issue
Hi Nick, one thing I dont like on osgWidget::Input is how inefficiently works with the text so I wrote my own Do you have the time to try and improve osgWidget::Input? If you find it inefficient chances are others will too (for example me :-) I will probably use it in the near future), but I think it's just not being used a lot by other OSG users yet. Another benefit to you is that if you can improve osgWidget::Input to the point where you can use it yourself (instead of writing your own widget) then maintenance of the code shifts and you have less code to maintain on your side... J-S -- __ Jean-Sebastien Guayjean-sebastien.g...@cm-labs.com http://www.cm-labs.com/ http://whitestar02.webhop.org/ ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] osgText issue
Do you have the time to try and improve osgWidget::Input? yes and now :-). I have time at nights from home, so that was my idea as well to put what I have come up with into the distribution. Also, the thing I wrote can be easily extended into text editor - multi line input. I have some plans to work on osgWidget in the near future, once the funding gets going :) Nick http://www.linkedin.com/in/tnick Sent from Devlet, Ankara, Turkey On Wed, Jan 13, 2010 at 4:24 PM, Jean-Sébastien Guay jean-sebastien.g...@cm-labs.com wrote: Hi Nick, one thing I dont like on osgWidget::Input is how inefficiently works with the text so I wrote my own Do you have the time to try and improve osgWidget::Input? If you find it inefficient chances are others will too (for example me :-) I will probably use it in the near future), but I think it's just not being used a lot by other OSG users yet. Another benefit to you is that if you can improve osgWidget::Input to the point where you can use it yourself (instead of writing your own widget) then maintenance of the code shifts and you have less code to maintain on your side... J-S -- __ Jean-Sebastien Guayjean-sebastien.g...@cm-labs.com http://www.cm-labs.com/ http://whitestar02.webhop.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
Re: [osg-users] osgText issue
Hi Nick, I have some plans to work on osgWidget in the near future, once the funding gets going :) Excellent, I just wanted to make sure people like you and me who have the need and the will to improve it will continue to do so and not just develop things in isolation. :-) Thanks, J-S -- __ Jean-Sebastien Guayjean-sebastien.g...@cm-labs.com http://www.cm-labs.com/ http://whitestar02.webhop.org/ ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
