Re: [osg-users] get OpenGL context

Hi, Thanks for you answer Robert. I have already include GLExtensions. I try to use GLX_NV_swap_group and for example, there is this function : Code: typedef Bool ( * JOINSWAPGROUPPROC) (Display* dpy, GLXDrawable drawable, GLuint group); I search to get the current Display*. Thank you!

[osg-users] Calculating altitude with LineSegmentIntersector

i have some trouble to calculate the altitude in my application i have - a pagedlod terrain - a runway - and an airplane model i have taken some of the osgearth code in elevationmanager.cpp as a starting point this code is called every frame : Code: Transform tr;

Re: [osg-users] (no subject)

On Wed, Jan 12, 2011 at 6:21 AM, Vivek Kumar Dwivedi vivekcsjm...@gmail.com wrote: Pléase don't send me queries. -- Vivek Dwivedi, ___ osg-users mailing list osg-users@lists.openscenegraph.org

Re: [osg-users] (no subject)

Hi Robert, Could you remove him from the mailing list ? he have sent dozens of mails like this. Mourad If want to disable subscription or unsubscribe then simply follow the list to the mailing list admin page - it's appended to all posts (see above you post even had all the info you need).

Re: [osg-users] Shader Update Latency?!

Hi Guo, On Wed, Jan 12, 2011 at 7:04 AM, Guo Chow guo.c...@gmail.com wrote: I encounter a similar latency problem when I try to update a uniform using camera's view matrix in the uniform's callback. Since this uniform is needed to compute only once per frame, I decide to compute it on CPU

Re: [osg-users] get OpenGL context

Hi Patrice, The include/osgViewer/api/X11/GraphicWindowX11 has the Display variable. public: // X11 specific access functions Display* getEventDisplay() const { return _eventDisplay; } Display* getDisplayToUse() const ; Window getParent() { return _parent;

Re: [osg-users] osgmovie and stereo

Hi Robert, I've wondered about this for a while - why does osgstereoimage map all the images to a curved plane? Have I missed something obvious about stereo images? Cheers. Kim. On 11 January 2011 17:14, Robert Osfield robert.osfi...@gmail.com wrote: Hi Vijay, You can play videos in

Re: [osg-users] LineSegmentIntersector::Intersection contains no indexList

Hi Robert, thanks for the reply. I have used the ShapeDrawable as an example. My code uses nodes read from COLLADA models and it doesn't work there either (those nodes display just fine, with the texture on them, so I know uv mapping is also working). I can't understand why the code allows the

Re: [osg-users] osgmovie and stereo

Hi Kim, On Wed, Jan 12, 2011 at 12:02 PM, Kim Bale kcb...@googlemail.com wrote: I've wondered about this for a while - why does osgstereoimage map all the images to a curved plane? Oh a looong way back I wrote the example for a Reality Center that had a cylindrical screen, I've hardly touched

Re: [osg-users] gelGlShaderInfoLog returning false

Hi, Right. I had wondered if that may be the problem, but couldn't find anything to confirm it. Thanks for the tip! I also did try attaching a callback and checking it there. I received an unhandled exception error identical to what I received if I tried to access the log before

[osg-users] how to render a scene to image?

Hi, I want to render a scene to image file or bitmap without visible window. How to do this ? I'm newhand. Can anyone give me example code please? Thank you! Cheers, tysen -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=35579#35579

Re: [osg-users] how to render a scene to image?

Look at osgscreencapture example and the code for pbuffer-only. jp On 12/01/11 14:44, Tysen Chan wrote: Hi, I want to render a scene to image file or bitmap without visible window. How to do this ? I'm newhand. Can anyone give me example code please? Thank you! Cheers, tysen

Re: [osg-users] how to render a scene to image?

I have two question： First：in the osgscreencapture example, there also run osg::viewer::run(). is it must run it ? Second：Is there have methods like opengl render scene to image? forexample: HDC hdc = CreateCompatibleDC(0); HBITMAP hbm = CreateDIBSection(hdc, bmi, DIB_RGB_COLORS, (void

Re: [osg-users] Display a triad in a viewport corner

Hey Jean Sébastien, And thanks a lot for your help, it works just fine the way you explained! Antoine ;) -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=35583#35583 ___ osg-users mailing list

Re: [osg-users] get OpenGL context

Thanks ! I 'm not sure i understand what do you mean for modify src/osgViewer/GraphicsWindowX11.cpp I have found an other solution with the function viewerbase::getWindows(Windows ). If i cast the GraphicsWindow into GraphicsWindowX11, i have acces to the function getDisplay() and

[osg-users] PERSPECTIVE --FIELD OF VIEW

Hi, I have been looked the perspective projection.But,I dont understood some value in there.Pls help me...Can I change fovy with fovx.Is there a value like fovx.Can I change horizantol value of the fov(x) not fov (y).Other problem is Aspect that I could not understand exactly what it mean

[osg-users] Improper rotation

Hi, i'm trying to rotate a rod (part of a 3rd party model) on its Y asxis. I read on OSG Startguide that to do it, i need to find the correct position of my object from the origin and apply a multiplication like T * M * -T. The source code that tries to do it is the follow Code: ing:

Re: [osg-users] Improper rotation

I understood part of the issue, and thus I corrected (part of) the error. Now seems that the rotation and the translation is formally right, but visually translation is wrong. I enclosed 3 pics of the scene, before rotating, after 1st rotation and after 2nd rotation. I correct the source as

[osg-users] Problems with osgUtil::TangentSpaceGenerator

Hi, I'm trying to implement a bump mapping shader. That works well for a simple shape like that plane, where I define the tangent attribute manually: Code: Geometry* plane = new Geometry(); Vec3Array* vertices = new Vec3Array(); Vec3Array* normals = new Vec3Array();

Re: [osg-users] Calculating altitude with LineSegmentIntersector

If you're using a geocentric database, you can use the osgSim::GetHeightAboveTerrain(...) method to get the altitude of either the terrain itself or an altitude above the terrain at a given lat,lon. This method takes into account paged databases in extracting the correct value... -Shayne

Re: [osg-users] PERSPECTIVE --FIELD OF VIEW

May I suggest you look at how OpenGL sets up the projection matrix. This is what OSG uses. gluPerspective is the routine that uses fovy and aspect to set up the projection matrix; It may be more intuitive for you to use the setProjectionMatrixAsFrustum() method in OSG to establish the

Re: [osg-users] Calculating altitude with LineSegmentIntersector

More accurately, the method is: osgSim::HeightAboveTerrain::computeHeightAboveTerrain(...) Sorry for the mistake in the previous post... -Shayne -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=35590#35590

Re: [osg-users] Improper rotation

Hi Axel, In the step where you're calculating m, it looks like you're applying the rotation to the original matrix, which includes a translation already. Code: osg::Matrix m = amtRod-getMatrix() * osg::Matrix::rotate(rotation, osg::Vec3(0,1,0)); It sounds like what you want to do is rotate

Re: [osg-users] OpenSceneGraph website appears to be down, again :)

Hi, I'm also experiencing the same problem (OperationalError: database is locked) when I try to visit www openscenegraph org (Thanks in advance to the admins when it's back online again.) Cheers, Rob -- Read this topic online here:

[osg-users] MouseY Order Reversal

Greetings All! Gee, this is one of the Issues in OSG that makes me stop and Ask! In a View Class, if you set the camera setting setAllowEventFocus to false, the setMouseYOrientation is changed to Y_INCREASING_DOWNWARDS instead of the other way around (that is default). :| :| :| Why? D

[osg-users] multiple tex gen modes in a single scene

Hi all -- Has anyone ever successfully used multiple TexGen modes (say, EYE_LINEAR and OBJECT_LINEAR) on different objects in the same scene? What is the recommended way to do this in OSG? The TexGenNode has a pointer to a TexGen, and the TexGen has the mode. I assume I should create two

Re: [osg-users] multiple tex gen modes in a single scene

Hi Paul, The TexGenNode should work just like the LightSource. It affects all nodes in the scene graph expect those with GL_TEXTURE_GEN_... set to OFF. So... I've no idea, too, about how to use multiple TexGenNodes to handle different generations in your shoes. :-) A possible way may be to apply

Re: [osg-users] Display a triad in a viewport corner

Hi, On 12/01/11 16:29, Antoine Rennuit wrote: Hey Jean Sébastien, And thanks a lot for your help, it works just fine the way you explained! if you have time..., a new osg example would be great ;) Then in future we can point people to that. rgds jp Antoine ;) -- Read

Re: [osg-users] PERSPECTIVE --FIELD OF VIEW

Hi, aspect is w/h, so you can get w if given aspect and h. jp On 12/01/11 17:36, Sümeyra Söyler wrote: Hi, I have been looked the perspective projection.But,I dont understood some value in there.Pls help me...Can I change fovy with fovx.Is there a value like fovx.Can I change horizantol

[osg-users] Need Help ! How to get Camera Position inside shaders

Heey Guys, I hope you will fine, anyway, i have question about how i can get the camera position inside shader from open scene graph do i must pass it, or open scene graph already do that. Thank you! Cheers, Laith -- Read this topic online here: