Re: [osg-users] AlphaPixel Whitepaper on VirtualPlanetBuilder/OSGDEM
Hi Chris, That's great to have more papers about the implementations of more OSG components! Thank you for the efforts on them. :-) Is it possible to translate these papers into Chinese and put them on some Chinese forums, of course, with original copyrights? Thanks, Wang Rui 2013/1/22 Chris Hanson xe...@alphapixel.com As promised last week: http://alphapixel.com/content/openscengraph-virtual-planet-builder-osgdem Feedback welcomed. -- Chris 'Xenon' Hanson, omo sanza lettere. xe...@alphapixel.com http://www.alphapixel.com/ Training • Consulting • Contracting 3D • Scene Graphs (Open Scene Graph/OSG) • OpenGL 2 • OpenGL 3 • OpenGL 4 • GLSL • OpenGL ES 1 • OpenGL ES 2 • OpenCL Digital Imaging • GIS • GPS • osgEarth • Terrain • Telemetry • Cryptography • Digital Audio • LIDAR • Kinect • Embedded • Mobile • iPhone/iPad/iOS • Android @alphapixel https://twitter.com/alphapixel facebook.com/alphapixel (775) 623-PIXL [7495] ___ 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] Most efficient way to get a single pixel RGBA from an FBO texture
I should note that my needs are very similar to the ones described in this post: http://forum.openscenegraph.org/viewtopic.php?t=5941highlight=glreadpixels I adapted the sample code given at the end of that thread and found that while I was able to retrieve the correct pixel values, I also was getting the: warning: detected OpenGL error 'invalid operation' at after RenderBin::draw() warning after every frame, regardless of whether my rtt camera was set to post render or pre render. Unfortunately that thread ended 2.5 years ago without a full resolution to the outstanding questions. -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=52096#52096 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] center camera on click
Hello, I click on a point in my node. I get a world intersection point (hitr-getWorldIntersectPoint()). I want to center my camera on this point that is to say this point becomes the pivot point of the rotation of the camera. Can you help me please? Thank you! Cheers, lucie -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=52100#52100 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Most efficient way to get a single pixel RGBA from an FBO texture
Hi Ethan, Maybe you could just keep it all on the gpu, and create the text for the hud in a shader like drawtext GLSL shader http://mew.cx/drawtext/drawtext.html Laurens. On 1/23/2013 3:24 PM, Ethan Fahy wrote: I should note that my needs are very similar to the ones described in this post: http://forum.openscenegraph.org/viewtopic.php?t=5941highlight=glreadpixels I adapted the sample code given at the end of that thread and found that while I was able to retrieve the correct pixel values, I also was getting the: warning: detected OpenGL error 'invalid operation' at after RenderBin::draw() warning after every frame, regardless of whether my rtt camera was set to post render or pre render. Unfortunately that thread ended 2.5 years ago without a full resolution to the outstanding questions. -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=52096#52096 ___ 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] Most efficient way to get a single pixel RGBA froman FBO texture
Whatever you end up doing, you want to avoid doing the equivalent of glReadPixels since that stalls the pipe and is relatively slow. I noticed that this was one of the suggestions in the link provided below... -Shayne -Original Message- From: osg-users-boun...@lists.openscenegraph.org [mailto:osg-users-boun...@lists.openscenegraph.org] On Behalf Of Ethan Fahy Sent: Wednesday, January 23, 2013 7:24 AM To: osg-users@lists.openscenegraph.org Subject: Re: [osg-users] Most efficient way to get a single pixel RGBA froman FBO texture I should note that my needs are very similar to the ones described in this post: http://forum.openscenegraph.org/viewtopic.php?t=5941highlight=glreadpix els I adapted the sample code given at the end of that thread and found that while I was able to retrieve the correct pixel values, I also was getting the: warning: detected OpenGL error 'invalid operation' at after RenderBin::draw() warning after every frame, regardless of whether my rtt camera was set to post render or pre render. Unfortunately that thread ended 2.5 years ago without a full resolution to the outstanding questions. -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=52096#52096 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.or g ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] AlphaPixel Whitepaper on VirtualPlanetBuilder/OSGDEM
Yes, sure, that'd be fine. Just send me PDFs of the translations so I can keep a copy on my site too. On Wed, Jan 23, 2013 at 7:00 AM, Wang Rui wangra...@gmail.com wrote: Hi Chris, That's great to have more papers about the implementations of more OSG components! Thank you for the efforts on them. :-) Is it possible to translate these papers into Chinese and put them on some Chinese forums, of course, with original copyrights? Thanks, Wang Rui 2013/1/22 Chris Hanson xe...@alphapixel.com As promised last week: http://alphapixel.com/content/openscengraph-virtual-planet-builder-osgdem Feedback welcomed. -- Chris 'Xenon' Hanson, omo sanza lettere. xe...@alphapixel.com http://www.alphapixel.com/ Training • Consulting • Contracting 3D • Scene Graphs (Open Scene Graph/OSG) • OpenGL 2 • OpenGL 3 • OpenGL 4 • GLSL • OpenGL ES 1 • OpenGL ES 2 • OpenCL Digital Imaging • GIS • GPS • osgEarth • Terrain • Telemetry • Cryptography • Digital Audio • LIDAR • Kinect • Embedded • Mobile • iPhone/iPad/iOS • Android @alphapixel https://twitter.com/alphapixel facebook.com/alphapixel (775) 623-PIXL [7495] ___ 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 -- Chris 'Xenon' Hanson, omo sanza lettere. xe...@alphapixel.com http://www.alphapixel.com/ Training • Consulting • Contracting 3D • Scene Graphs (Open Scene Graph/OSG) • OpenGL 2 • OpenGL 3 • OpenGL 4 • GLSL • OpenGL ES 1 • OpenGL ES 2 • OpenCL Digital Imaging • GIS • GPS • osgEarth • Terrain • Telemetry • Cryptography • Digital Audio • LIDAR • Kinect • Embedded • Mobile • iPhone/iPad/iOS • Android @alphapixel https://twitter.com/alphapixel facebook.com/alphapixel (775) 623-PIXL [7495] ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] center camera on click
The MxEventHandler class in the osgWorks project has an event handler that lets you specify the center of rotation. Documentation is here: http://vesuite.org/external/docs/osgworks/classosgw_mx_1_1_mx_event_handler.html#_details so you can see that ctrl+shift+leftmouse sets the new center of rotation. (The event handler also supports changing the FOV and toggling between orthographic and perspective.) osgWorks can be downloaded from here: osgWorks.googlecode.com and if you want to try this event handler, run the MxViewer example. The MxViewer example and the MxEventHandler class are built on tools in the osgwMx library, which contains several matrix utility classes and functions, as well as support for DirectX input devices such as gamepads. -Paul On 1/23/2013 8:52 AM, lucie lemonnier wrote: Hello, I click on a point in my node. I get a world intersection point (hitr-getWorldIntersectPoint()). I want to center my camera on this point that is to say this point becomes the pivot point of the rotation of the camera. Can you help me please? Thank you! Cheers, lucie -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=52100#52100 ___ 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
