Re: [osg-users] Scientific Visualization classes?
Hi Andrew, we have used OSG and VTK together in some data visualization projects. We don't use any black magic in combining the two, but our software might contain some handy code that is usable for your purposes. The software (Virtual Reality eXplorer (VRX) and VRmeer Library Open Source Edition) can be downloaded here: http://graphics.tudelft.nl/VRmeer I'd love to discuss dataviz stuff on OSG, so do contact me if you have ideas on combining the two. Gerwin On Tue, Feb 2, 2010 at 8:12 PM, Andrew Cunningham o...@a-cunningham.com wrote: I was looking for some SciVis classes for OSG, along the lines of VTK's very rich collection? It is possible to use use VTK as a visualization engine to prepare data for OSG (vtkActorToOSG), and I am prepared to go that way, but that is not particularly efficient in memory and speed as data has to be translated both ways. I evaluated using either VTK and OSG for a project , but found the VTK scene graph implementation is, in my experience, poorly implemented, and performance is not good once a scene graph gets more than a few levels deep. VTK's abstraction from the underlying graphics API also hurts performance. One of my test cases showed a 20x performance hit over OSG. Andrew -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=23553#23553 ___ 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] Scientific Visualization classes?
Andrew, the ROOT toolkit makes nice plots, but not sure about OSG integration .. http://root.cern.ch/drupal/ -Charles On Wed, Feb 3, 2010 at 5:57 PM, Andrew Cunningham o...@a-cunningham.comwrote: Hi I already have the osgVTK kit as listed on http://www.openscenegraph.org/projects/osg/wiki/Community/NodeKits As far as what specific visualizations I am after... - Real contour plots - Isosurfaces + possibly many of the other types of sci-visualizations (streamlines etc) in the future. Seems like the VTK bridge is probably the way to go I suppose as it is unlikely anyone will develop all those algorithms all over again for OSG. Andrew -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=23626#23626 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org -- AsymptopiaSoftware|softw...@thelimit http://www.asymptopia.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Scientific Visualization classes?
Hi Andrew, I have used OSG and VTK both. And done something similar in the past. Can you tell me what you are trying to achieve? I am keeping this email off the list intentionally. Thanks, Aashish On Tue, Feb 2, 2010 at 2:12 PM, Andrew Cunningham o...@a-cunningham.com wrote: I was looking for some SciVis classes for OSG, along the lines of VTK's very rich collection? It is possible to use use VTK as a visualization engine to prepare data for OSG (vtkActorToOSG), and I am prepared to go that way, but that is not particularly efficient in memory and speed as data has to be translated both ways. I evaluated using either VTK and OSG for a project , but found the VTK scene graph implementation is, in my experience, poorly implemented, and performance is not good once a scene graph gets more than a few levels deep. VTK's abstraction from the underlying graphics API also hurts performance. One of my test cases showed a 20x performance hit over OSG. Andrew -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=23553#23553 ___ 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] Scientific Visualization classes?
I have some code that I can post for extracting the data from vtk to OSG. But yes that would be not the be the best solution specially if you have dynamic data. What exactly you are trying to achieve? On Tue, Feb 2, 2010 at 2:12 PM, Andrew Cunningham o...@a-cunningham.com wrote: I was looking for some SciVis classes for OSG, along the lines of VTK's very rich collection? It is possible to use use VTK as a visualization engine to prepare data for OSG (vtkActorToOSG), and I am prepared to go that way, but that is not particularly efficient in memory and speed as data has to be translated both ways. I evaluated using either VTK and OSG for a project , but found the VTK scene graph implementation is, in my experience, poorly implemented, and performance is not good once a scene graph gets more than a few levels deep. VTK's abstraction from the underlying graphics API also hurts performance. One of my test cases showed a 20x performance hit over OSG. Andrew -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=23553#23553 ___ 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] Scientific Visualization classes?
Hi I already have the osgVTK kit as listed on http://www.openscenegraph.org/projects/osg/wiki/Community/NodeKits As far as what specific visualizations I am after... - Real contour plots - Isosurfaces + possibly many of the other types of sci-visualizations (streamlines etc) in the future. Seems like the VTK bridge is probably the way to go I suppose as it is unlikely anyone will develop all those algorithms all over again for OSG. Andrew -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=23626#23626 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] Scientific Visualization classes?
I was looking for some SciVis classes for OSG, along the lines of VTK's very rich collection? It is possible to use use VTK as a visualization engine to prepare data for OSG (vtkActorToOSG), and I am prepared to go that way, but that is not particularly efficient in memory and speed as data has to be translated both ways. I evaluated using either VTK and OSG for a project , but found the VTK scene graph implementation is, in my experience, poorly implemented, and performance is not good once a scene graph gets more than a few levels deep. VTK's abstraction from the underlying graphics API also hurts performance. One of my test cases showed a 20x performance hit over OSG. Andrew -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=23553#23553 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
