Re: [osg-users] OSG 2.9.9 compile issues on Mac with Qt 4.6.3, other Qt issues

Hi, The errors say your QT libs are not built for ppc, but OSG frameworks are being built for ppc (besides i386), resulting undefined symbols. so getting rid of ppc from target architecture of cmake should solve the problem. Tat - Tatsuhiro Nishioka On 2010/09/03, at 4:31, Andrew Lett wr

[osg-users] Compute Terrain Intersection for .flt databases [SEC=UNCLASSIFIED]

Hi - Whats the best way to get the z down intersect point onto a paged database. I'm getting what looks like loss of precision errors. I am not sure if it is because I am using osgUtil::IntersectVisitor (Which I believe is deprecated?) or my lack of knowledge of osgSim::HeightAboveTerrain. Is it m

[osg-users] Custom Drawing for Geode

Hi, I am working on an ocean water effect that basically consists of a tessellated plane that undulates in a wave-like motion. It's just a flat plane, but it has a vertex shader that creates the wave motion by adding a few sine waves together. And this is working perfectly well, but my problem

Re: [osg-users] Oddly textured Triangles in osggeometry example

Hi Robert That did the trick. Thank you! James. -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=31286#31286 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.o

[osg-users] OSG 2.9.9 compile issues on Mac with Qt 4.6.3, other Qt issues

I've tried compiling the SVN version of OSG 2.9.9 on both Mac OS 10.5 and 10.6, and it appears that there is an issue with Qt 4.6.3. There are a number of errors during linking. For now, a workaround for the build is to go back to an earlier version of Qt, it appears that version 4.5.2 compiles a

Re: [osg-users] draw callbacks

Hi Robert, Thank you very much for your very detailed help!!! osgFX is exactly what I was looking for. Actually I don't even need the camera, I only put it there to be able to assign the post-draw callback. I will try it and if it works, I will post the code, just in case someone is interes

Re: [osg-users] Virtual reality application (head-tracking, stereo, immersive displays)

lucie lemonnier wrote: Hi, Thank you for your reply! I didn't specify that I used the mode QUAD_BUFFER for the stereo. I don't understand why would I need two cameras per surface, why one would not suffice? Don't worry, I guessed that you were intending to do quad-buffered stereo :-) A

Re: [osg-users] Virtual reality application (head-tracking, stereo, immersive displays)

Hi, Thank you for your reply! I didn't specify that I used the mode QUAD_BUFFER for the stereo. I don't understand why would I need two cameras per surface, why one would not suffice? Cheers, lucie -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=3

Re: [osg-users] camera manpulator

Hi Otto, I think your suspicion is correct - building your own manipulator would probably be best. It really isn't hard to extend one of the camera manipulators to do what you want, or to just start with the source code of an existing manipulator and tweak the appropriate methods. This is wha

Re: [osg-users] Virtual reality application (head-tracking, stereo, immersive displays)

lucie lemonnier wrote: Hi, I want to create a virtual reality application with OSG in an immersive environment (workbench cf. attached file) with head-tracking and stereoscopy, ... I want to implement the head-tracking with the stereoscopy. I get the values of position and orientation of the

Re: [osg-users] draw callbacks

You can use osgFX node kit framework to implement described capping tehnique. You do that by inheriting osgFX::Effect class. In your derived class you have to override/implement virtual bool define_techniques() member of the osgFX::Effect class like this: bool CappingEffect::define_techniqu

[osg-users] Virtual reality application (head-tracking, stereo, immersive displays)

Hi, I want to create a virtual reality application with OSG in an immersive environment (workbench cf. attached file) with head-tracking and stereoscopy, ... I want to implement the head-tracking with the stereoscopy. I get the values of position and orientation of the head-tracker with VRPN.

Re: [osg-users] 3D envelopes

HI Vincent, What do you mean by 3D envelope, it's rather an open ended all by itself. Convex hull? Bounding box? Bounding sphere? A pre-paid A4 envelope perfect for sending large pictures through the post? Robert. On Thu, Sep 2, 2010 at 3:12 PM, Vincent Bourdier wrote: >  Hi all, > > I am c

Re: [osg-users] latest NVIDIA drivers

Hello Wojtek, I have noticed issues with Shader compilation on 256 (and above) series on Windows 7. Some fragment shaders using gl_LightSource fields were generating internal compiler errors. In fact I also posted a bug report to NVidia. These errors were normally reported by OSG with compilatio

[osg-users] 3D envelopes

Hi all, I am currently looking for a way to compute envelopes from 3D datas (Geometry, Groups, etc...) I saw that external lib could do it, but first of all I ask to all of you if someone did something for OSG that could help me. That would help me a lot in my work. Thanks for your help.

Re: [osg-users] Problem with samples

Hi, Thanks for all your responses guys - that seems to answer the problem ! Will try the offered fixes when I get home from work Thank you! Cheers, Martin -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=31274#31274 __

Re: [osg-users] Crash when GLObjectsVisitor gets to the same texture in several threads at the same time

Hi Robert, Thanks for the quick turn-around and review on this. Your conclusion makes sense. But I hope osg::Texture is the only place where this kind of bug was present. It may be that it was just the first one my example tripped upon, and the (heavy-handed) workaround fixed them all... I've

Re: [osg-users] Crash when GLObjectsVisitor gets to the same texture in several threads at the same time

Hello Robert, It will initialize with the with the DisplaySettings::instance()->getMaxNumberOfGraphicsContexts() value. Exactly, and at that point the max number of graphics contexts is smaller than what it will be since the viewer and contexts haven't been created yet. So it will have to re

Re: [osg-users] time going backward

Hi John, I have seen a couple of small negative times regport, but not anything near to two seconds. The time used by the events should based on the same time as the FrameStamp, it would be worth investigating to see what is going on. osgGA::EventQueue and osgViewer::Viewer::advance() would be t

Re: [osg-users] destructing Viewer after context is gone

Hi Andy, On Thu, Sep 2, 2010 at 1:17 PM, Andy Skinner wrote: > JOGL has an interface with init(), display(), displayChanged(), and > reshape().  It doesn't have a method for when the context is being destroyed. >  You can do something on the removeNotify() for the component, but we've seen > s

[osg-users] time going backward

Hi, I see events coming with decreasing time (GUIEventAdapter::getTime()). However, I expected always increasing sequence. Is this feature or bug? Further investigation shows that current OSG trunk sends different timestamps for FRAME events than for other events. Seems like it is using diff

Re: [osg-users] destructing Viewer after context is gone

> GraphicsWindowEmbbedded usage assume that context is always current > for the life of the viewer. With a bit of hacking you could probably > disable the clean up the view and graphics window are attempting to > do, but it would probably be far easier to remove the destroy the > graphics window/v

[osg-users] how to wait for terrain to be loaded

Hello all. I have a large txp database (5GB) that i'm reading it by osdDB::readNodeFile and trying to show it together with QT environment. My machine: OpenSuse 11.3 - osg 2.9.6 dev-release. I've noticed that sometimes my terrain does not show up on screen. most of the time, when it shows up, i

[osg-users] draw callbacks

Hi, I have some solid geometry clipped by some clipping planes in an OSG application. I am trying to use the capping technique described in chapter 10 of the Red Book using the stencil buffer. I have successfully implemented this technique in raw OpenGL, but I would like to use it whithin the

Re: [osg-users] Render text n pixels above text position

Hi Martin, I'm currently working on improved 3D text functionality for osgText and as part of the work am implementing a TextNode class that will be used in place of the current Text3D drawable. My plan is to keep the TextNode general purpose enough to handle 2D text as well, so while my current

Re: [osg-users] Problem with samples

On Thursday 02 September 2010 11:13:37 Torben Dannhauer wrote: > Hi, > > I have the same problem. As workaround, you could start your software not > as fullscreen with the --window parameter. > > Thank you! > > Cheers, > Torben Other workarounds include turning the Aero compositor off completel

Re: [osg-users] Render text n pixels above text position

Glenn, thanks for your reply. Because performance IS important for me (hundreds of texts) I went a different route. I derived a class TextWithOffset from osgText::Text and overwrote the method computePositions. I added my offset to the _offset member variable after the alignment was calculated

Re: [osg-users] Problem with samples

Hi, I have the same problem. As workaround, you could start your software not as fullscreen with the --window parameter. Thank you! Cheers, Torben -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=31262#31262 __

Re: [osg-users] Granular LOD control

Hi Brad, As Tim Moore suggests the way to go is to use a cull callback attached to the subgraph that you want to modify the LOD scale for. The osgUtil::CullVisitor that does the cull traversal is subclassed from osg::NodeVisitor and osg::CullStack. osg::CullStack itself is subclassed from osg::C

Re: [osg-users] destructing Viewer after context is gone

Hi Andy, On Wed, Sep 1, 2010 at 7:12 PM, Andy Skinner wrote: > Should I be able to set up a Viewer or CompositeViewer such that it can be > destroyed when the graphics context is not current?  What about if it does > not exist anymore? GraphicsWindowEmbbedded usage assume that context is alway

Re: [osg-users] Granular LOD control

On Wed, Sep 1, 2010 at 7:53 PM, Brad Huber wrote: > Hello, > > > > I am interested in granularly controlling the LODScale for different parts > of my scene graph. For example I have one part of the graph rendering a > globe (osgEarth) and another part rendering items on the globe. I would > li

Re: [osg-users] Oddly textured Triangles in osggeometry example

Hi James, The osggeometry example is an example that illustrates building osg::Geometry objects in a way that matches OpenGL documentation on primitives. To match the original picture the bottom row uses osg::PolygonStipple to give the checker boarded effect - something that you see in the underl

Re: [osg-users] Problem with samples

Hi Martin, I'm familiar with this particular problem, but it kinda sounds like the windows compositor/OpenGL driver aren't playing well together. Try disabling the window compositing to see if that helps. Also look at the driver situation, perhaps there is a new driver available. The Nvidia foru

[osg-users] camera manpulator

Hi, I'm kind of afraid the answer will be: reimplement a camera manipulator that does what you want, but maybe someone had a similar problem and there is a solution already. Ok here goes. Right now I'm using a trackball manipulator, which is great. Now when you move the scene and thus the trac

Re: [osg-users] Crash when GLObjectsVisitor gets to the same texture in several threads at the same time

Hi JS, On Wed, Sep 1, 2010 at 2:27 PM, Jean-Sébastien Guay wrote: > > Yes, indeed, and this is the case for most uses of OSG. Generally, you'll > load the scene data first (so the buffered_value will be set to size 0 as > you don't have any contexts yet) and only then will you create your viewer

Re: [osg-users] Granular LOD control

> I would like to be able to increase or decrease the LODScale for just the globe portion without disturbing everything else. Write NodeVisitor that will control the osg::LOD range -Nick On Wed, Sep 1, 2010 at 9:53 PM, Brad Huber wrote: > Hello, > > > > I am interested in granularly co