Hello,
When I get a scene graph and I want to do something with a geode in world
coordinates, I have to use the world matrix of the geode (usually the matrizes
of the parents). Now, the difficult part is a node can have several parents. I
am not sure how I can manage this fact. How can I
Hello,
If you use that in relation with the pick handlers, you'll see that
every intersector will return you the intersected node complete path, so
there is no issue with multiple parents nodes.
In other cases, managing nodes using the nodePath as reference is a
solution too...
Regards,
Hi
You can use META_Node, and you can go without it if you dont need functionality
provided there.
osg meta macroses most usefull when you derive from abstract classes, so you
dont need to fill all pure virtual functions by hand, some of this work done by
macro.
Cheers,
Sergey.
19.02.2012,
Hi there
I dont read all messages here, but if problem still there - your uniform for
sampler initialized wrong
You should use state-addUniform(new osg::Uniform(lut, int(TEXTURE_UNIT)));
notice int cast there
or you should create uniform with explicit type specification of
osg::Uniform::INT,
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HI Maciej,
On 18 February 2012 08:00, Maciej Ciemborowicz p...@ciemborowicz.pl wrote:
I'm controling manipulator with keyboard, so I don't need default mouse
control. How may I turn it off? And how can I change distance of manipulator
manualy? I mean with mouse I can zoom in/out with scroll,
Hi Clement,
osgVolume will have very light CPU usage, but heavily taxes the GPU so
the CPU usage you are seeing won't be down to osgVolume.
What might be causing the high CPU usage I cannot say, it's your
hardware, your application. As a general note MFC is rather limiting,
you are using a
Hi Martin,
The OSG supports subgraphs having multiple parents and hence multiple
world coordinates. Whether you would want to use this facility will
depend upon the what you are trying to do - typically you'd use this
facility to place multiple subgraphs like cars wheels onto a car, or a
trees
Hi Chuck,
I'm afraid as I'm not the original author of this bit of code I can't
provide insight above what you can by reading the code.
Robert.
On 17 February 2012 17:47, Chuck Seberino seber...@energid.org wrote:
Robert et al,
I have been looking at an problem I have been having with the
On 17 February 2012 17:47, Chuck Seberino seber...@energid.org wrote:
The behavior I am seeing is that a small change in mouse drag will cause a
large rotation and in certain cases will also cause a rotation in the
opposite direction.
I'm seeing the same thing and it's annoying, but it
Hi,
I am having a anyoing issue that i cannot figure out. Ive seen some post about
similar issue but with no defenit fix. I writing a picker code to know the
vertices of my object when i click in it following faitfully the example in
picking in the samples, however, getFirstIntersection() is
Hi all!
I'm a noob, but i built osgAndroidExampleGLES2.
I try cow.osg and the result is same (the only difference is that i see a black
cow instead white)..
I had to write a shader for texture?
Like this? (see attach)
thanx in advance.
Giulio
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Read this topic online here:
Hi,
I am new to OSG and OpenGL. I am attempting to create a scene where an image
from a real camera is projected onto a 3d model of the object being
photographed. I used the projective texture mapping technique following the
osgspotlight example, substituting my image for the spotlight image
Hello all,
I am trying to implement a HUD with a crosshair in a QT window.
I have used the osghud.cpp and QTViewer examples for this.
It seems like I am not setting the correct projection matrix in my HUD camera.
In my project I have 2 cameras (as in the osghud.cpp example):
The first, looking
Hi,
sorry to ask questions about such a classic topic but I've read lot of things
about Datavariance and would like to be sure about some points :
I've read in osg guides that the datavariance of a Drawable (and all
subclasses) and a StateSet must be set the DYNAMIC if we plan to modify its
Hi everyone,
I've been speaking with some of the folks on the FlightGear forum about a
problem I'm having, and I was recommended to contact this group for some help.
I'm trying to project an image onto a curved screen using a video projector and
a hemispherical mirror. Basically, images are
Hi,
When I switched graphics cards from a nVidia to an AMD radeon (Windows7), my
motion blur effects went away, due to the fact that the first pixel format that
wglChoosePixelFromatARB returned did not have an accumulation buffer. If I
added an attribute to the attribute list, WGL_ACCUM_BITS,
Hi,Jayce
I build the sample project osgAndroidExampleGLES1 of osg3.0.0 with no errors
and install the .apk on my 2.3.6 device, i put the cow.osg in /sdcard/ ,and
then load the file using the menu L.Object,but nothing display(the LogCat show
'Loaded Model'),i don't know why.Can you help me with
On Feb 17, 2012, at 10:44 AM, Islamov Denis wrote:
1) When i compile Qt Viewer, program can't find plugins for loading models
(but all dylib's in usr/local/lib and .so files in
usr/local/lib/osgPlugins-3.0.1)
Did you build osg with -DOSG_WINDOWING_SYSTEM=Cocoa
This has been discussed before, but I'm not sure what you'd search for to find
it in the archives.
In the most general and conservative sense, you should set dynamic data variance
on anything you need to change.
But in reality, you only need to do this for objects that are referenced by the
Hi
You can use osg::DisplaySettings::setMinimumNumAccumBits(...) on
osg::DisplaySettings-instance() or on View
Cheers, Sergey
14.02.2012, 00:18, Leigh Stivers leigh.stiv...@gmail.com:
Hi,
When I switched graphics cards from a nVidia to an AMD radeon (Windows7), my
motion blur effects went
Thanks Paul for your answer.
You're right, the conservative approch is a good way to think, as it seems to
be very critical (seeing from stability of the app).
I was wondering effectively what is or not in the render graph, just because it
seems it can affect a lot the global perf of the
For contents of the render graph, the following might have some information:
http://www.bricoworks.com/articles/stateset/stateset.html
http://www.bricoworks.com/articles/stategraph/stategraph.html
SingleThreaded means that frame() doesn't return until the draw threads have
completed. At that
Hi Roy,
What you are looking to do is called distortion correction - you are
correcting for distortion created by projecting an image onto a curved
surface. Doing distortion correct is rather advanced OSG/graphics
usage, and not something I'd recommend for a beginner.
To do this correction
You might get better results asking on the osgAudio list:
http://groups.google.com/group/osgaudio-users?pli=1
I have osgAudio working with local files, but when trying to play a remote
audio (http://www.example.com/audio.wav), it gives an I/O error.
Is there a different way to load
as i was looking when this error happen the _Myfirstiter is NULL when its going
through the ~Interserction() destruction. could that be a possible cause of the
issue? i mean trying to delete a null pointer?
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one other thing also i noticed, my code is calling the ~Intersection()
destructor while osg example (osgkeyboardmouse) is not when exiting the pick
function()
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Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=45609#45609
What do you guys out there use for rendering NURBS?
glu?
Third-party libraries? If so which ones can you recommend?
Thanks,
Anders.
--
__
Anders Backman, HPC2N
90187 Umeå University, Sweden
and...@cs.umu.se http://www.hpc2n.umu.se
Cell: +46-70-392 64 67
Hi,
do you think doing an animated skybox is feasible using OSG? We would
like to do this on Windows using hardware-accelerated decoding of an
MP4 or H.264 or WMV file into a texture, so it does not suck up all
our precious CPU resources.
For rendering the skybox I would use software like Vue,
Giulio, there has been some changes in the handling of textures/projective
textures. Cow it's usually a model that gave me errors because of that.
Just try simple models withouth textures first and learn step by step.
2012/2/18 Giulio Pierucci giulio.pierucc...@gmail.com
Hi all!
I'm a noob,
Hi Anders,
I have a NURBS example in my coming book: OpenSceneGraph 3.0 Cookbook. It
uses the glu* functions within a derived Drawable class.
Also a long time ago, I had have a project osgModeling (currently inactive)
in which I implemented a class that simulates NURBS surfaces with polygons.
Hi Chris, thank you for the link.
Yes, I forgot to mention, Im using openAL soft and Windows 7 (Visual Studio
10).
If any ideas, please comment.
Best regards.
From: osg-users-boun...@lists.openscenegraph.org
[mailto:osg-users-boun...@lists.openscenegraph.org] On Behalf Of Chris
Hi Chris, thank you for the link.
Yes, I forgot to mention, Im using openAL soft and Windows 7 (Visual Studio
10).
If any ideas, please comment.
Best regards.
From: osg-users-boun...@lists.openscenegraph.org
[mailto:osg-users-boun...@lists.openscenegraph.org] On Behalf Of Chris
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