[osg-users] computing triangles?
Hi I got a basic doubt on osg terrain construction. When I create a virtual earth with the base layer using bluemarble of 1000m resolution, how many triangular polygons are created and what is computation basis for it? Is the number varies(computed) to different LOD? -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=50591#50591 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Releasing Graphics context?
Robert, Actually I m creating new context and assigning to already existing camera. I use CompositeViewer. I tried removing camera from the view but the error stands still. Let me try out the second one and get back. In case of having just Viewer, is there any other way to do it? Thanks -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=50022#50022 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Releasing Graphics context?
Hi Robert My OSG version is 3.0.1. Is close() the right call to release the context completely? -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=50038#50038 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] Releasing Graphics context?
Hi, My application renders on multiple screens and each attached with seperate graphics context. The apps demands addition/removal of any graphics context dynamically. Suppose when the context is removed and added subsequently for the same screen, it throws msg like unable to makeCurrentContext(...). Following to that, I couldn't render anything on to the screen. To release graphics context, I tried context-close(). I am not sure what needs to be done?? Thanks -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=49990#49990 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Releasing Graphics context?
Robert I have 2 screens to be rendered with texture2D. I created context to each screen with appropriate screen id such a way, osg::ref_ptrpsg::GraphicsContext::Traits traits = new .; traits-x = 0; traits-y = 0; traits-screenNum = 0; //1 for other screen trait-width = screen_width; trait-height = screen_height; trait-doubleBuffer = true; trait-sharedContext = 0; osg::ref_ptrosg::GraphicsContext gc = osg::GraphicsContext::createGraphicsContext(trait.get()); The gc of each screen is set to a camera and camera as slave to view. When I render texture to both the screen I get the display fine. As soon as I try to remove one of the screen context using gc-close() and recreate again for the same screen, I get such an error. Further, I couldn't render any texture the updated screen. Thanks -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=50004#50004 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] Best way of adding more models?
Hi I was trying an application which renders some models on android phone using osg. The application requires more number of models to be loaded. As the number of models increases the rendering gets slowed down drastically as expected. The way I do is that under a group node all other nodes are added as children. As all the nodes need to be displayed in all levels(range), I was thinking not to use PagedLOD. Is there any better way to organize the structure for better the rendering? Grouping the nodes will do better any how?? Thanks -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=49667#49667 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] Geographic earth in OSG?
Hi,
I created virtual earth as follows,
osg::Node* createEarth()
{
osg::TessellationHints* hints = new osg::TessellationHints;
hints-setDetailRatio(5.0f);
osg::ShapeDrawable* sd = new osg::ShapeDrawable(new
osg::Sphere(osg::Vec3(0.0,0.0,0.0), osg::WGS_84_RADIUS_POLAR), hints);
osg::Geode* geode = new osg::Geode;
geode-addDrawable(sd);
std::string filename =
osgDB::findDataFile(Images/land_shallow_topo_2048.jpg);
geode-getOrCreateStateSet()-setTextureAttributeAndModes(0, new
osg::Texture2D(osgDB::readImageFile(filename)));
osg::CoordinateSystemNode* csn = new osg::CoordinateSystemNode;
csn-setEllipsoidModel(new osg::EllipsoidModel());
csn-addChild(geode);
return csn;
}
But with the above ellipsoidal model I could not locate any geographic location
accurately. Means that, not able to locate any position for given latitude and
longitude accurately. What should be done more?
Thanks
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Re: [osg-users] Geographic earth in OSG?
Hi, True. There is no problem with osgearth as it has well wrapped with projection information. I did not face any issue with that. But the samething when tried with OSG alone, i observed some issues. I put the pbm this way, suppose for given latitude and longitude as 11.0 and 77.0 (to be in radians) and to the resultant (x,y,z) of ellipsoid-converLatLonHtToXYZ(..), an object was attached. The object placement is not exactly over that latitude and longitude. It lies totally somewhere else on the globe. I think it is projection issue. Is anybody tried this out??? Thanks -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=47738#47738 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] IllegalArgumentException?
Hi I compiled osg3.0.1 for android for GLES1. I seleceted avd of Android2.2 with API level of 8. There is no problem in starting the emulator.fine. I also compiled osgAndroidExampleGLES1 without any issue on eclipse. Running the application throws the following error, 05-04 05:38:01.375: D/libEGL(275): egl.cfg not found, using default config 05-04 05:38:01.375: D/libEGL(275): loaded /system/lib/egl/libGLES_android.so 05-04 05:38:01.385: W/EGLview(275): creating OpenGL ES 1 context 05-04 05:38:01.405: W/dalvikvm(275): threadid=7: thread exiting with uncaught exception (group=0x4001d800) 05-04 05:38:01.405: E/AndroidRuntime(275): FATAL EXCEPTION: GLThread 8 05-04 05:38:01.405: E/AndroidRuntime(275): java.lang.IllegalArgumentException 05-04 05:38:01.405: E/AndroidRuntime(275): at com.google.android.gles_jni.EGLImpl._eglCreateContext(Native Method) 05-04 05:38:01.405: E/AndroidRuntime(275): at com.google.android.gles_jni.EGLImpl.eglCreateContext(EGLImpl.java:50) 05-04 05:38:01.405: E/AndroidRuntime(275): at osg.AndroidExample.EGLview$ContextFactory.createContext(EGLview.java:103) 05-04 05:38:01.405: E/AndroidRuntime(275): at android.opengl.GLSurfaceView$EglHelper.start(GLSurfaceView.java:922) 05-04 05:38:01.405: E/AndroidRuntime(275): at android.opengl.GLSurfaceView$GLThread.guardedRun(GLSurfaceView.java:1246) 05-04 05:38:01.405: E/AndroidRuntime(275): at android.opengl.GLSurfaceView$GLThread.run(GLSurfaceView.java:1116) I like to know what went wrong Thanks -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=47545#47545 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] [build] [Tutorial] Building osgAndroidExampleGLES1/2 on Ubuntu 11.10
Hi I compiled osg3.0.1 for android for GLES1. I seleceted avd of Android2.2 with API level of 8. There is no problem in starting the emulator.fine. I also compiled osgAndroidExampleGLES1 without any issue on eclipse. Running the application throws the following error, 05-04 05:38:01.375: D/libEGL(275): egl.cfg not found, using default config 05-04 05:38:01.375: D/libEGL(275): loaded /system/lib/egl/libGLES_android.so 05-04 05:38:01.385: W/EGLview(275): creating OpenGL ES 1 context 05-04 05:38:01.405: W/dalvikvm(275): threadid=7: thread exiting with uncaught exception (group=0x4001d800) 05-04 05:38:01.405: E/AndroidRuntime(275): FATAL EXCEPTION: GLThread 8 05-04 05:38:01.405: E/AndroidRuntime(275): java.lang.IllegalArgumentException 05-04 05:38:01.405: E/AndroidRuntime(275): at com.google.android.gles_jni.EGLImpl._eglCreateContext(Native Method) 05-04 05:38:01.405: E/AndroidRuntime(275): at com.google.android.gles_jni.EGLImpl.eglCreateContext(EGLImpl.java:50) 05-04 05:38:01.405: E/AndroidRuntime(275): at osg.AndroidExample.EGLview$ContextFactory.createContext(EGLview.java:103) 05-04 05:38:01.405: E/AndroidRuntime(275): at android.opengl.GLSurfaceView$EglHelper.start(GLSurfaceView.java:922) 05-04 05:38:01.405: E/AndroidRuntime(275): at android.opengl.GLSurfaceView$GLThread.guardedRun(GLSurfaceView.java:1246) 05-04 05:38:01.405: E/AndroidRuntime(275): at android.opengl.GLSurfaceView$GLThread.run(GLSurfaceView.java:1116) I like to know what went wrong Thanks -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=47548#47548 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] X11 link for osg compile?
Hi I tried to compile osg 3.0.1. with cygwin. Almost all the dependencies installed during cygwin setup including necessary libs of X11. But the compilation of osgviewer throws the following linker error, Linking CXX shared library ../../bin/cygosgViewer-80.dll Creating library file: ../../lib/libosgViewer.dll.a CMakeFiles/osgViewer.dir/GraphicsWindowX11.o:GraphicsWindowX11.cpp:(.text+0x262): undefined reference to `_XFree' CMakeFiles/osgViewer.dir/GraphicsWindowX11.o:GraphicsWindowX11.cpp:(.text+0x2a1): undefined reference to `_XGetWindowAttributes' CMakeFiles/osgViewer.dir/GraphicsWindowX11.o:GraphicsWindowX11.cpp:(.text+0x2af): undefined reference to `_XVisualIDFromVisual' CMakeFiles/osgViewer.dir/GraphicsWindowX11.o:GraphicsWindowX11.cpp:(.text+0x2dc): undefined reference to `_XGetVisualInfo' CMakeFiles/osgViewer.dir/GraphicsWindowX11.o:GraphicsWindowX11.cpp:(.text+0x766): undefined reference to `_XInternAtom' CMakeFiles/osgViewer.dir/GraphicsWindowX11.o:GraphicsWindowX11.cpp:(.text+0x784): undefined reference to `_XInternAtom' CMakeFiles/osgViewer.dir/GraphicsWindowX11.o:GraphicsWindowX11.cpp:(.text+0x835): undefined reference to `_XSendEvent' CMakeFiles/osgViewer.dir/GraphicsWindowX11.o:GraphicsWindowX11.cpp:(.text+0x879): undefined reference to `_XMapWindow' CMakeFiles/osgViewer.dir/GraphicsWindowX11.o:GraphicsWindowX11.cpp:(.text+0x90c): undefined reference to `_XInternAtom' CMakeFiles/osgViewer.dir/GraphicsWindowX11.o:GraphicsWindowX11.cpp:(.text+0x9f5): undefined reference to `_XChangeProperty' CMakeFiles/osgViewer.dir/GraphicsWindowX11.o:GraphicsWindowX11.cpp:(.text+0xa6a): undefined reference to `_XFlush' CMakeFiles/osgViewer.dir/GraphicsWindowX11.o:GraphicsWindowX11.cpp:(.text+0xa7d): undefined reference to `_XSync' CMakeFiles/osgViewer.dir/GraphicsWindowX11.o:GraphicsWindowX11.cpp:(.text+0xb40): undefined reference to `_XMoveResizeWindow' CMakeFiles/osgViewer.dir/GraphicsWindowX11.o:GraphicsWindowX11.cpp:(.text+0xb4b): undefined reference to `_XFlush' CMakeFiles/osgViewer.dir/GraphicsWindowX11.o:GraphicsWindowX11.cpp:(.text+0xb5e): undefined reference to `_XSync' CMakeFiles/osgViewer.dir/GraphicsWindowX11.o:GraphicsWindowX11.cpp:(.text+0xbca): undefined reference to `_XStoreName' CMakeFiles/osgViewer.dir/GraphicsWindowX11.o:GraphicsWindowX11.cpp:(.text+0xbf3): undefined reference to `_XSetIconName' CMakeFiles/osgViewer.dir/GraphicsWindowX11.o:GraphicsWindowX11.cpp:(.text+0xbfe): undefined reference to `_XFlush' CMakeFiles/osgViewer.dir/GraphicsWindowX11.o:GraphicsWindowX11.cpp:(.text+0xc11): undefined reference to `_XSync' CMakeFiles/osgViewer.dir/GraphicsWindowX11.o:GraphicsWindowX11.cpp:(.text+0xcbf): undefined reference to `_XDefineCursor' CMakeFiles/osgViewer.dir/GraphicsWindowX11.o:GraphicsWindowX11.cpp:(.text+0xcca): undefined reference to `_XFlush' CMakeFiles/osgViewer.dir/GraphicsWindowX11.o:GraphicsWindowX11.cpp:(.text+0xcdd): undefined reference to `_XSync' CMakeFiles/osgViewer.dir/GraphicsWindowX11.o:GraphicsWindowX11.cpp:(.text+0xe0b): undefined reference to `_XCreateBitmapFromData' CMakeFiles/osgViewer.dir/GraphicsWindowX11.o:GraphicsWindowX11.cpp:(.text+0xe5f): undefined reference to `_XCreatePixmapCursor' CMakeFiles/osgViewer.dir/GraphicsWindowX11.o:GraphicsWindowX11.cpp:(.text+0xe73): undefined reference to `_XFreePixmap' CMakeFiles/osgViewer.dir/GraphicsWindowX11.o:GraphicsWindowX11.cpp:(.text+0xe7e): undefined reference to `_XFlush' CMakeFiles/osgViewer.dir/GraphicsWindowX11.o:GraphicsWindowX11.cpp:(.text+0xe91): undefined reference to `_XSync' CMakeFiles/osgViewer.dir/GraphicsWindowX11.o:GraphicsWindowX11.cpp:(.text+0xec3): undefined reference to `_XCreateFontCursor' CMakeFiles/osgViewer.dir/GraphicsWindowX11.o:GraphicsWindowX11.cpp:(.text+0xef7): undefined reference to `_XCreateFontCursor' CMakeFiles/osgViewer.dir/GraphicsWindowX11.o:GraphicsWindowX11.cpp:(.text+0xf2b): undefined reference to `_XCreateFontCursor' CMakeFiles/osgViewer.dir/GraphicsWindowX11.o:GraphicsWindowX11.cpp:(.text+0xf5f): undefined reference to `_XCreateFontCursor' CMakeFiles/osgViewer.dir/GraphicsWindowX11.o:GraphicsWindowX11.cpp:(.text+0xf93): undefined reference to `_XCreateFontCursor' CMakeFiles/osgViewer.dir/GraphicsWindowX11.o:GraphicsWindowX11.cpp:(.text+0xfc7): more undefined references to `_XCreateFontCursor' follow CMakeFiles/osgViewer.dir/GraphicsWindowX11.o:GraphicsWindowX11.cpp:(.text+0x13f5): undefined reference to `_XOpenDisplay' CMakeFiles/osgViewer.dir/GraphicsWindowX11.o:GraphicsWindowX11.cpp:(.text+0x1464): undefined reference to `_XDisplayName' CMakeFiles/osgViewer.dir/GraphicsWindowX11.o:GraphicsWindowX11.cpp:(.text+0x1541): undefined reference to `_XDisplayName' CMakeFiles/osgViewer.dir/GraphicsWindowX11.o:GraphicsWindowX11.cpp:(.text+0x15a6): undefined reference to `_XCloseDisplay' CMakeFiles/osgViewer.dir/GraphicsWindowX11.o:GraphicsWindowX11.cpp:(.text+0x16e3): undefined reference to `_XCloseDisplay'
[osg-users] Android on windows?
Hi I gone through many installation procedures of osg with android. All emphasized on linux. Nowhere I could find for windows. Can android be configured with X-windows system only? Thanks -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=47188#47188 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] loading to texture memory?
Hi, I have GPU of having 1GB texture memory. I like to load large volume of data into texture memory( using SetImage()), but less than 1GB, and render part by part of the data for every frame. Does OSG contains any function call to transfer only portion of texture memory to the display? To my knowledged, SetImage() in osg::Texture2D is the only call to load data into texture memory directly, I think? Thanks -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=46985#46985 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] .ive acronym?
hi I could not find the acronym of .ive. Every where it is said that it is OSG truncated binary format. But from where these three letters have been taken?? -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=46906#46906 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] geometry indexes?
Hi Is there any easy way to find vertices's index for the shapes like Cone, Cube etc., in osg::shape? Otherwise, should it be done thru graph note book only? Thanks -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=44869#44869 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] osgQt Multiscreen crashes?
Hi, I have installed osg3.0 on Linux system connected with two monitors thru separate graphics cards, say screen1 and screen2. On screen2 I have my GUI using qt. In the GUI, one of the widgets is made based on osgQt to show an osg modal. That model is set with the camera attached with the context created using createQtGraphicsContext. On screen1, I m trying to render a texture created with context based on pure osg without Qt. Actually the texture rendering is triggered from the GUI on screen2. The application crashes down. If the qtOsg widget on screen2 is disabled, the texture is getting rendered. I m not sure what went wrong?? -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=42136#42136 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] CullDrawthreading on multicards?
Hi, I am rendering textures on 8 graphics cards, each connected to one monitor. The cards, ATI Firestream 9250 series, are connected to system through PCI extension slots. If I set CullDrawThreadPerContext to composite viewer, the application crashes down. Its working with SingleThreaded Model, by default, fine. How to set multithreading to my application? Thank you! -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=40044#40044 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] North compass
Hi,
I went through all the discussions on north compass.
I have displayed the discussed code and the way I m making use of it for my
osgEarth. But it s not working in my case.I m not sure what is to be done.
osg::Matrixd calculatePositionMatrix( const osg::EllipsoidModel* ellipsoid,
const osg::Vec3d newPosition, const osg::Vec3d oldPosition)
{
osg::Matrixd localToWorld, worldToLocal;
ellipsoid-computeLocalToWorldTransformFromXYZ(
newPosition[0],newPosition[1],newPosition[2],localToWorld );
worldToLocal = Matrix::inverse( localToWorld );
osg::Vec3d newPosInNewPosLocalCoordSystem = osg::Vec3d( 0,0,0 ); // ==
newPosition * worldToLocal;
osg::Vec3d oldPosInNewPosLocalCoordSystem = oldPosition * worldToLocal;
osg::Vec3d moveInNewPosLocalCoordSystem = newPosInNewPosLocalCoordSystem -
oldPosInNewPosLocalCoordSystem;
double heading = atan2(
moveInNewPosLocalCoordSystem[1],moveInNewPosLocalCoordSystem[0] );
// usually pitch in local tangent space can be computed
// like this (radians):
//double pitch = atan2( moveInNewPosLocalCoordSystem[2], hypot(
moveInNewPosLocalCoordSystem[0],
//moveInNewPosLocalCoordSystem[1] ));
pitch = 0.0;
double roll = 0.0;
osg::Matrix turnRight90DegreesClockwise = osg::Matrix::rotate(
osg::DegreesToRadians( -90.0 ), osg::Vec3d( 0,0,1 ) );
osg::Matrix rotateToMatchLocalHeading = osg::Matrix::rotate( heading,
osg::Vec3d( 0,0,1 ) );
osg::Matrix rotateToMatchLocalPitch = osg::Matrix::rotate( pitch, osg::Vec3d(
1,0,0 ) );
osg::Matrix rotateToMatchLocalRoll = osg::Matrix::rotate( roll, osg::Vec3d(
0,1,0 ) );
// So the matrix would be like this:
osg::Matrixd matrix = turnRight90DegreesClockwise * rotateToMatchLocalRoll *
rotateToMatchLocalPitch * rotateToMatchLocalHeading * localToWorld;
return matrix;
}
...
...
...
For every FRAME:
...
..
osg::Vec3d newpos=viewer.getCameraManipulator()-getViewPoint();
osg::Matrixd rot=calculatePositionMatrix(ellip_model, newpos, oldpos);
compassMT-preMult(rot);
oldpos=newpos;
.
Thanks,
A. Akilan
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[osg-users] context on different graphics cards?
Hi, I have put two graphics cardsin my system from different vendors. One is of ATI and another one is from nVidia. Using ATI I drive 2 monitors and able to create 2 graphics contexts in my osg application, each to one screen. In the same application I m not able to create graphics context for nVidia card which is connected to another 3rd monitor. createGraphicsContext() fails. I m not sure what needs to be done. Thank you! Cheers, Akilan -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=31027#31027 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] context on different graphics cards?
yes. I m trying it out on windows 7 only. -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=31033#31033 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] synchronizing multi rendering?
Hi, I have multi display set up in a way one graphics card to each monitor. I created one context to each screen and framing one texture to each and rendering. The rendering I do in a loop(1..NSCREEN). Display is happening perfectly as stream of video in parallel. After some time, the displays are not getting synchronized with each other. Means that one is going bit ahead of another one. Even though I set my composite viewer with single threaded, I dnt understand why this happens so? I m not sure what needs to be done. Akilan -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=29893#29893 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] Texture rendering performance issue
Hi, My system is connected with AMD Firestream 9250 having 1GB of card memory. I do some of GPGPU computations on the card. At the same time, using OSG I do texture rendering as a stream, in parallel. The rendering of texture effects performance down for GPGPU computation. I dont understand how does just rendering creates huge impact while the render texture size is not more than 1920 * 1200(my screen size) as I have 1GB of card memory. Is there anyway for optimal rendering of texture? Thank you! -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=29628#29628 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] osgwidget with texture setting?
Hi, In my application, I created a texture set to the screen size. Ortho camera has been created to map the texture entirely to the screen. I had created some osgwidget buttons to have some interaction on texture. But the widget buttons are, by default, goes behind the texture(in foreground). I m not sure how to set the widgets as foreground and textures behind it? Akilan -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=27752#27752 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] Transformation on osgWidget?
Hi, I had installed osg2.9.6. osgWidget::Box is being used in my application. It provides, by default, transformation functionalities. Regarding rotation, it provides setRotation(osgWidget::matrix_type) to do that. But I am not sure how to specify the axis about which rotation to be done. I tried in other way like MT(rotate)--osgWidget::Box (I m not sure whether it is correct way of doing). But it results nothing. Thanks -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=27685#27685 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] openGL error with osgEarth?
Hi Jason,
In fact, I create the map through program.What the program does is that as and
when some new tif file arrives at particular folder which I am monitoring
continuously thru callback, I add the file to the already created map. It works
well for some 2-3 tile addition. When it goes beyond that it throws the openGL
error. Have a look at my code. Is there any other way to do the same.
Akilan. A
Code:
class monitorCallback : public osg::NodeCallback
{
public:
monitorCallback(osgEarth* map)
{
_map=map;
}
virtual void operator()(osg::Node* node, osg::NodeVisitor* nv)
{
//
// look for any new tif arrival at specific folder
//
.
.
if(new_tif)
{
sprintf(name, tile_%d, tif_cnt);
osgEarth::Config conf;
conf.add(url, new_tif);//new tif name with relative
path
_map-addMapLayer( new osgEarth::MapLayer(name,
osgEarth::MapLayer::TYPE_IMAGE, gdal, conf ) );
}
}
osgEarth::Map* _map;
};
int main(int argc, char* argv[])
{
_chdir(curr_dir);
osgViewer::Viewer* viewer=new osgViewer::Viewer;
osg::Group* root=new osg::Group;
osgEarth::Map* map = new
osgEarth::Map(osgEarth::Map::CSTYPE_GEOCENTRIC);
// Cache
map-setCache(new TMSCache(cache));
// World
{
osgEarth::Config conf;
conf.add( url, ../data/world.tif );
map-addMapLayer( new osgEarth::MapLayer(WORLD,
osgEarth::MapLayer::TYPE_IMAGE, gdal, conf ) );
}
root-setUpdateCallback(new monitorCallback(map));
osgEarth::MapNode* mapNode=new osgEarth::MapNode(map);
mapNode-setNodeMask( 0x01 );
viewer-setCameraManipulator(new osgEarthUtil::EarthManipulator);
viewer-addEventHandler( new osgViewer::StatsHandler() );
viewer-addEventHandler( new osgViewer::ThreadingHandler() );
viewer-setSceneData(root);
viewer-run();
return 0;
}
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Re: [osg-users] osgEarth fading effect?
Robert, I set our terrain as input (output.ive) to the same osgmultitexturecontrol example. It is returning false from the function where node to the type of multitexturecontrol is searched from our terrain i.e.,dynamic_cast to multitexturecontrol is failing. Expected elevation blending/fading layers is not happening. Pls let me understand the problem. Akilan. A -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=27057#27057 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] osgEarth fading effect?
Hi zonk, To say straghtly, same region has been constituted by multi resolution tiles. The transition from coarser to better resolution tile will take place based on the height we are. As u said, exactly I like to know about the LOD popping by fadding only. Akilan. A -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=27064#27064 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] osgEarth fading effect?
Hi robert true. My imagery tiles have been constructed as layers such a way coarser resolution images lies at the top and higher resolution images at bottom.When my scene is zoomed-in, I like to have the appearance of higher resolution tiles like fading-in. Is that possible by changing alpha values of the tiles? Akilan. A -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=26886#26886 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] osgEarth fading effect?
Hi robert true. My imagery tiles have been constructed as layers such a way coarser resolution images lies at the top and higher resolution images at bottom.When my scene is zoomed-in, I like to have the appearance of higher resolution tiles like fading-in. Is that possible by changing alpha values of the tiles? Akilan -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=26887#26887 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] osgEarth fading effect?
akilan wrote: Hi robert true. My imagery tiles have been constructed as layers such a way coarser resolution images lies at the top and higher resolution images at bottom.When my scene is zoomed-in, I like to have the appearance of higher resolution tiles like fading-in. Is that possible by changing alpha values of the tiles? Extremely sorry. Unknowingly new thread created for this. The same querry added with existing thread Akilan. A -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=26888#26888 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] osgEarth fading effect?
Hi, Similar to osgEarth which provides to set fading effect to the terrain tiles, could it be is possible to get the same effect directly from osg alone and how? Bcoz, to exploit that feature from osgEarth, it puts some constraints like the terrainDB should be generated with --terrain options and some other split level specifications. By passing all those constraints I wud like to see thru my terrainDB with the fading effect. I hope dat dis s not just to do with pagedLOD. Thanks -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=26753#26753 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Multicard memory allocation?
Hi robert,
Thanks for ur clarification. In our setup, all powerwall displays
are of 1280*1024. I m rendering a texture of 1280*1024 with the cameras
viewport set in such a way it will be projected on big screen as 1280*1024.
That means, as 512*1024 I m creating 3 textures(last one is 256*1024). Each
texture is set to one context/card and camera. The offset of each texture is
0, 512, 1024 respectively(viewport setup). But I get display on screen as 3
textures more space between them as seen in my powerwall display. I understand
dat as I set texture to different context, my offset setting goes wrong. But I
want to make use of all cards available in my system. What needs to be done to
get merged single display out of my powerwall display? I attach my code as well
for the reference.
Code:
#define NSCREEN 3
#define SCREEN_HEIGHT 1024
//OSG related var
osg::Texture2D* texture[NSCREEN];
osg::ref_ptrosgText::Text latLonDisp;
osg::Image* image[NSCREEN];
osg::MatrixTransform* mt;
osg::Matrix rotate;
double rot_angle=180.f;
//
//
// Function Defn: Create tecture to the specified view and width
//
osg::Camera* createTex(int nView, int width)
{
double right = 0.5 * width;
double top = 0.5 * SCREEN_HEIGHT;
osg::Camera* camera = new osg::Camera;
camera-setProjectionMatrix(osg::Matrix::ortho2D(-right, right, -top,
top));
//camera-setViewMatrixAsLookAt(osg::Vec3(0.0,0.0,0.0),osg::Vec3(0.0,1.0,0.0),osg::Vec3(0.0,0.0,1.0));
camera-setReferenceFrame(osg::Transform::ABSOLUTE_RF);
camera-setClearMask(GL_DEPTH_BUFFER_BIT);
camera-setRenderOrder(osg::Camera::POST_RENDER);
camera-setAllowEventFocus(false);
{
osg::Geode* geode = new osg::Geode();
std::string timesFont(fonts/arial.ttf);
osg::StateSet* stateset = geode-getOrCreateStateSet();
stateset-setMode(GL_LIGHTING,osg::StateAttribute::OFF);
{
osg::Geometry* geom = new osg::Geometry;
osg::Vec3Array* vertices = new osg::Vec3Array;
vertices-push_back(osg::Vec3(-right, top,0.f));
vertices-push_back(osg::Vec3(-right, -top,0.f));
vertices-push_back(osg::Vec3(right, -top, 0.f));
vertices-push_back(osg::Vec3(right, top, 0.f));
geom-setVertexArray(vertices);
osg::Vec2Array* texcoords = new osg::Vec2Array(4);
(*texcoords)[0].set(0.0f,1.0f);
(*texcoords)[1].set(0.0f,0.0f);
(*texcoords)[2].set(1.0f,0.0f);
(*texcoords)[3].set(1.0f,1.0f);
geom-setTexCoordArray(0,texcoords);
osg::Vec3Array* normals = new osg::Vec3Array;
normals-push_back(osg::Vec3(0.0f,0.0f,1.0f));
geom-setNormalArray(normals);
geom-setNormalBinding(osg::Geometry::BIND_OVERALL);
osg::Vec4Array* colors = new osg::Vec4Array;
colors-push_back(osg::Vec4(1.0f,1.0,1.0f,1.0f));
geom-setColorArray(colors);
geom-setColorBinding(osg::Geometry::BIND_OVERALL);
geom-addPrimitiveSet(new osg::DrawArrays(GL_QUADS,0,4));
texture[nView] = new osg::Texture2D;
texture[nView]-setName(TEXTURE);
texture[nView]-setDataVariance(osg::Object::DYNAMIC); // protect
from being optimized away as static state.
texture[nView]-setResizeNonPowerOfTwoHint(false);
// Setting buffer
image[nView] = new osg::Image;
image[nView]-setName(BUFFER);
image[nView]-setOrigin(osg::Image::BOTTOM_LEFT);
image[nView]-setImage(width, SCREEN_HEIGHT, 1, GL_LUMINANCE,
GL_LUMINANCE, GL_UNSIGNED_BYTE,buf[nView], osg::Image::NO_DELETE);
texture[nView]-setImage(image[nView]);
osg::StateSet* stateset = geom-getOrCreateStateSet();
stateset-setTextureAttributeAndModes(0,texture[nView],osg::StateAttribute::ON);
stateset-setMode(GL_BLEND,osg::StateAttribute::ON);
stateset-setRenderingHint(osg::StateSet::TRANSPARENT_BIN);
// Rotate the texture to 180 degree
mt = new osg::MatrixTransform;
//rotate.makeRotate(osg::inDegrees(0.0), 1.0, 0.0, 0.0);
mt-setMatrix(osg::Matrix::rotate(osg::inDegrees(rot_angle), 1.0,
0.0, 0.0));
mt-addChild(geode);
geode-addDrawable(geom);
}
camera-addChild(mt);
}
return camera;
}
void main()
{
{
// construct the viewer.
osgViewer::CompositeViewer viewer;
// create the main
[osg-users] Multicard memory allocation?
Hi, I have multiple graphics cards in my system and connected to different display. I created multiple views(composite viewer) so that each view to one context. Each view has its own camera projecting its own texture (similar to osgHud example). My assumption is that each texture occupies the memory from respective graphics cards referred to by the context. Is that correct? or Will they create space on one card only? Second, How to do multi-pipe rendering? Bcoz I have another configuration like Multiple graphics cards---3 Projectors--1 screen(1280*1024) in which I wud like to render my scene. Akilan -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=26629#26629 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] osgText and Texture
Hi, I created a texture and set to a camera. Another camera was set to a text. Text and the texture are in different views. Always the text goes behind the texture. What needs to be done to make the text appear always in front? I tried by setting the texture state's rendering hint as TRANSPARENT. But couldn 't any change. -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=26342#26342 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] osgText and Texture
Hi robert,
True. I do follow the osgHud example. But I am trying to display lat, lon
values as text on mouse move over texture set from buffer. Anyway we use our
own tranformation. But I couldn 't set the transparency. Have a look @ my code
and let me get the mistake i do.
Code:
osg::Camera* createTex()
{
osg::Group* group=new osg::Group;
osg::Geometry *geom;
osg::Camera* camera = new osg::Camera;
camera-setProjectionMatrix(osg::Matrix::ortho2D(0,1920,0,1200));
camera-setReferenceFrame(osg::Transform::ABSOLUTE_RF);
camera-setViewMatrix(osg::Matrix::identity());
camera-setClearMask(GL_DEPTH_BUFFER_BIT);
camera-setRenderOrder(osg::Camera::POST_RENDER);
camera-setAllowEventFocus(true);
{
osg::Vec3 top_left(0.0f ,0.0f ,1200.0f);
osg::Vec3 bottom_left(0.0f ,0.0f ,0.0f);
osg::Vec3 bottom_right(1920.0f ,0.0f, 0.0f);
osg::Vec3 top_right(1920.0f, 0.0f, 1200.0f);
geom = new osg::Geometry;
osg::Vec3Array* vertices = new osg::Vec3Array(4);
(*vertices)[0] = top_left;
(*vertices)[1] = bottom_left;
(*vertices)[2] = bottom_right;
(*vertices)[3] = top_right;
geom-setVertexArray(vertices);
osg::Vec2Array* texcoords = new osg::Vec2Array(4);
(*texcoords)[0].set(0.0f,1.0f);
(*texcoords)[1].set(0.0f,0.0f);
(*texcoords)[2].set(1.0f,0.0f);
(*texcoords)[3].set(1.0f,1.0f);
geom-setTexCoordArray(0,texcoords);
osg::Vec3Array* normals = new osg::Vec3Array(1);
(*normals)[0].set(0.0f,0.0f,1.0f);
geom-setNormalArray(normals);
geom-setNormalBinding(osg::Geometry::BIND_OVERALL);
osg::Vec4Array* colors = new osg::Vec4Array(1);
(*colors)[0].set(1.0f,1.0f,1.0f,0.2f);
geom-setColorArray(colors);
geom-setColorBinding(osg::Geometry::BIND_OVERALL);
geom-addPrimitiveSet(new osg::DrawArrays(GL_QUADS,0,4));
osg::Geode* geom_geode = new osg::Geode;
geom_geode-addDrawable(geom);
texture = new osg::Texture2D;
texture-setName(TEXTURE);
texture-setDataVariance(osg::Object::DYNAMIC);
texture-setResizeNonPowerOfTwoHint(false);
// Setting buffer
osg::Image* image = new osg::Image;
image-setName(BUFFER);
image-setOrigin(osg::Image::BOTTOM_LEFT);
image-setImage(buf_width, buf_height, 1, GL_LUMINANCE,
GL_LUMINANCE, GL_UNSIGNED_BYTE,buf, osg::Image::NO_DELETE);
texture-setImage(image);
osg::StateSet* stateset = geom-getOrCreateStateSet();
stateset-setTextureAttributeAndModes(0,texture,osg::StateAttribute::ON);
stateset-setMode(GL_LIGHTING, osg::StateAttribute::OVERRIDE |
osg::StateAttribute::OFF);
stateset-setRenderingHint(osg::StateSet::TRANSPARENT_BIN);
camera-addChild(geom_geode);
}
return camera;
}
osg::Node* createLatLonLabel()
{
osg::Group* root=new osg::Group;
osg::Camera* camera = new osg::Camera;
root-addChild(camera);
camera-setProjectionMatrix(osg::Matrix::ortho2D(0,1920,0,1200));
camera-setReferenceFrame(osg::Transform::ABSOLUTE_RF);
camera-setViewMatrix(osg::Matrix::identity());
camera-setClearMask(GL_DEPTH_BUFFER_BIT);
camera-setRenderOrder(osg::Camera::POST_RENDER);
camera-setAllowEventFocus(true);
{
osg::Geode* geode = new osg::Geode();
std::string timesFont(fonts/arial.ttf);
osg::StateSet* stateset = geode-getOrCreateStateSet();
stateset-setMode(GL_LIGHTING, osg::StateAttribute::OVERRIDE |
osg::StateAttribute::OFF);
stateset-setRenderingHint(osg::StateSet::TRANSPARENT_BIN);
stateset-setMode(GL_LIGHTING,osg::StateAttribute::OFF);
osg::Vec3 position(0.0f,0.0f,0.0f);
{
latLonDisp = new osgText::Text;
geode-addDrawable( latLonDisp );
latLonDisp-setFont(timesFont);
latLonDisp-setCharacterSize(15);
latLonDisp-setFontResolution(25,25);
latLonDisp-setPosition(position);
latLonDisp-setText((0,0));
latLonDisp-setAlignment(osgText::Text::CENTER_TOP);
latLonDisp-setAxisAlignment(osgText::Text::XY_PLANE);
}
camera-addChild(geode);
}
return root;
}
[osg-users] Setting camera to texture
Hi, My screen resolution is 1920*1200 and I rendered a texture with the geometry as top_left(0.0,1.2), top_right(1.92, 1.2), bottom_left(0.0, 0.0) and bottom_right(1.92, 0.0). Camera is set as, ... .. camera-setViewPort(0,0, 1920, 1200); camera-setProjectionMatrix(osg::Matrix::Ortho2D(0,1920,0,1200)); ... .. But I dont understand why the texture is not fitting exactly onto the screen? -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=26172#26172 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Setting camera to texture
Hi,
The code written is,
.
int numCameras=2;
int numScreens=2;
int width=1920 * numScreens;
int height=1200;
void setView(osgViewer::View* view, int screen_no)
{
double aspectRatioScale = 1.0;
osg::ref_ptrosg::GraphicsContext::Traits traits = new
osg::GraphicsContext::Traits;
traits-screenNum = screen_no;
traits-x = (screen_no*width)/numCameras;
traits-y = 0;
traits-width = width/numCameras-1;
traits-height = height;
traits-windowDecoration = true;
traits-doubleBuffer = true;
traits-sharedContext = 0;
osg::ref_ptrosg::GraphicsContext gc =
osg::GraphicsContext::createGraphicsContext(traits.get());
osg::ref_ptrosg::Camera camera = new osg::Camera;
camera-setGraphicsContext(gc.get());
camera-setViewport(new osg::Viewport(0,0, width/numCameras, height));
camera-setProjectionMatrix(osg::Matrix::ortho2D(0.0,1920,0.0,1200));
camera-setViewMatrix(osg::Matrix::identity());
camera-setClearMask(GL_DEPTH_BUFFER_BIT);
GLenum buffer = traits-doubleBuffer ? GL_BACK : GL_FRONT;
camera-setDrawBuffer(buffer);
camera-setReadBuffer(buffer);
view-addSlave(camera.get(), osg::Matrix::scale(aspectRatioScale, 1.0,
1.0)*osg::Matrix::translate(translate_x, 0.0, 0.0), osg::Matrix() );
}
..
main()
{
.
// view 1
{
osg::Group* scene=new osg::Group;
scene-addChild(createTex());//1920 * 1200
osgViewer::View* view = new osgViewer::View;
view-setSceneData(scene);
setView(view, 0);
view-setCameraManipulator(tm);
viewer.addView(view);
}
// view 2
{
osg::Group* scene=new osg::Group;
scene-addChild(createTex());//1920 * 1200
osgViewer::View* view = new osgViewer::View;
view-setSceneData(scene);
setView(view, 1);
view-setCameraManipulator(tm);
viewer.addView(view);
}
.
}
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Re: [osg-users] Setting camera to texture
Hi Nick
Find my code below to compile,
Code:
#include osg/Node
#include osg/Geometry
#include osg/Notify
#include osg/MatrixTransform
#include osg/Texture2D
#include osg/DrawPixels
#include osg/PolygonOffset
#include osg/Geode
#include osgDB/Registry
#include osgDB/ReadFile
#include osgText/Text
#include osgViewer/Viewer
#include osgViewer/CompositeViewer
#include osgViewer/ViewerEventHandlers
#include osgGA/StateSetManipulator
#include osgGA/TrackballManipulator
#include iostream.h
#undef MULTI_SCREEN
#define NUM_CAMERA 1
#define NUM_SCREEN 1
unsigned char *buf_1, *buf_2, *buf_3, *buf_4;
int buf_width=1920, buf_height=1200;
unsigned int numCameras = NUM_CAMERA;
unsigned int numScreens = NUM_SCREEN;
int width=1920 * NUM_SCREEN;
int height=1200;
int read_off=0;
osg::ref_ptrosg::Image image;
osg::Texture2D *texture[4];
osg::Geometry *geom[4];
void initRead(char* fname, int w, int h)
{
buf_1=new unsigned char[buf_width * buf_height];
buf_2=new unsigned char[buf_width * buf_height];
buf_3=new unsigned char[buf_width * buf_height];
buf_4=new unsigned char[buf_width * buf_height];
memset((unsigned char*)buf_1,(unsigned char)128,buf_width * buf_height);
memset((unsigned char*)buf_2,(unsigned char)160,buf_width * buf_height);
memset((unsigned char*)buf_3,(unsigned char)180,buf_width * buf_height);
memset((unsigned char*)buf_4,(unsigned char)200,buf_width * buf_height);
}
osg::Node* createTex(int index, unsigned char* buf)
{
osg::Group* group=new osg::Group;
osg::Vec3 top_left(0.0f ,0.0f ,height);
osg::Vec3 bottom_left(0.0f ,0.0f ,0.0f);
osg::Vec3 bottom_right(width ,0.0f, 0.0f);
osg::Vec3 top_right(width, 0.0f, height);
geom[index] = new osg::Geometry;
osg::Vec3Array* vertices = new osg::Vec3Array(4);
(*vertices)[0] = top_left;
(*vertices)[1] = bottom_left;
(*vertices)[2] = bottom_right;
(*vertices)[3] = top_right;
geom[index]-setVertexArray(vertices);
osg::Vec2Array* texcoords = new osg::Vec2Array(4);
(*texcoords)[0].set(0.0f,1.0f);
(*texcoords)[1].set(0.0f,0.0f);
(*texcoords)[2].set(1.0f,0.0f);
(*texcoords)[3].set(1.0f,1.0f);
geom[index]-setTexCoordArray(0,texcoords);
osg::Vec3Array* normals = new osg::Vec3Array(1);
(*normals)[0].set(1.0f,0.0f,0.0f);
geom[index]-setNormalArray(normals);
geom[index]-setNormalBinding(osg::Geometry::BIND_OVERALL);
osg::Vec4Array* colors = new osg::Vec4Array(1);
(*colors)[0].set(1.0f,1.0f,1.0f,1.0f);
geom[index]-setColorArray(colors);
geom[index]-setColorBinding(osg::Geometry::BIND_OVERALL);
geom[index]-addPrimitiveSet(new osg::DrawArrays(GL_QUADS,0,4));
osg::Geode* geom_geode = new osg::Geode;
geom_geode-addDrawable(geom[index]);
texture[index] = new osg::Texture2D;
texture[index]-setName(TEXTURE);
texture[index]-setDataVariance(osg::Object::DYNAMIC); // protect from
being optimized away as static state.
texture[index]-setResizeNonPowerOfTwoHint(false);
// Setting buffer
image = new osg::Image;
image-setName(BUFFER);
image-setOrigin(osg::Image::BOTTOM_LEFT);
image-setImage(buf_width, buf_height, 1, GL_LUMINANCE, GL_LUMINANCE,
GL_UNSIGNED_BYTE,buf, osg::Image::NO_DELETE);
texture[index]-setImage(image);
osg::StateSet* stateset = geom[index]-getOrCreateStateSet();
stateset-setTextureAttributeAndModes(0,texture[index],osg::StateAttribute::ON);
stateset-setMode(GL_LIGHTING,osg::StateAttribute::OFF);
group-addChild(geom_geode);
return group;
}
void setView(osgViewer::View* view, int screen_no)
{
double aspectRatioScale = 1.0;
osg::ref_ptrosg::GraphicsContext::Traits traits = new
osg::GraphicsContext::Traits;
traits-screenNum = screen_no;
traits-x = (screen_no*width)/numCameras;
traits-y = 0;
traits-width = width/numCameras-1;
traits-height = height;
traits-windowDecoration = true;
traits-doubleBuffer = true;
traits-sharedContext = 0;
osg::ref_ptrosg::GraphicsContext gc =
osg::GraphicsContext::createGraphicsContext(traits.get());
osg::ref_ptrosg::Camera camera = new osg::Camera;
camera-setGraphicsContext(gc.get());
camera-setViewport(new osg::Viewport(0,0, width/numCameras, height));
camera-setProjectionMatrix(osg::Matrix::ortho2D(0,1920,0,1200));
camera-setViewMatrix(osg::Matrix::identity());
camera-setClearMask(GL_DEPTH_BUFFER_BIT);
GLenum buffer = traits-doubleBuffer ? GL_BACK : GL_FRONT;
camera-setDrawBuffer(buffer);
camera-setReadBuffer(buffer);
view-addSlave(camera.get(), osg::Matrix::scale(aspectRatioScale, 1.0,
1.0)*osg::Matrix::translate(0.0, 0.0, 0.0), osg::Matrix() );
}
int main(int , char **)
{
[osg-users] GraphicsContext on Multiple Graphics cards?
Hi, 4 graphics cards have been installed in my system thru PCI extension board. In my application I want to associate individual camera with each context created on each card. I wud like to know how to create context for specific graphics card/display. -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=26060#26060 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] positioning osg model at lat, lon
Hi,
I tried to place cessna model at given latitude and longitude on a earth model
created by geotiff earth file warped over sphere (similar to the example
osgSimulation). But the model is positioned at some strange place. The way I do
placing is,
...
.
osg::Node* cessna = osgDB::readNodeFile(cessna.osg);
if (cessna)
{
double s = 20.0 / cessna-getBound().radius();
osg::MatrixTransform* scaler = new osg::MatrixTransform;
scaler-addChild(cessna);
scaler-setMatrix(osg::Matrixd::scale(s,s,s)*osg::Matrixd::rotate(rotation));
scaler-getOrCreateStateSet()-setMode(GL_RESCALE_NORMAL,osg::StateAttribute::ON);
osg::MatrixTransform* mt = new osg::MatrixTransform;
mt-addChild(scaler);
rot.makeRotate(osg::DegreesToRadians(90.0),0.0,0.0,1.0);
...
osg::EllipsoidModel* ellipsoid = csn-getEllipsoidModel();
if (ellipsoid)
{
osg::Matrixd matrix;
lat=11.0;
lon=78.0;
ht=100.0 * 1000.0;
ellipsoid-computeLocalToWorldTransformFromLatLongHeight(lat,long,ht,matrix);
matrix.preMultRotate(rot);
mt-setMatrix(matrix);
}
csn-addChild(mt);
...
The coordinate system node is of the earth file (Geotif). I wud like to know
the mistake I do.
Thanks
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Re: [osg-users] Multi screen display issue
Hi, Actually I like to display a big video stream in original resolution, 3840 * 1 (width * height). The video will run contiguously upward covering the width resolution as it is. We don't want to configure Xinerama due to some other reasons. But when we run osgviewer to display some of the example models, it is automatically picking up both the monitors. I wud like to understand it. Thanks -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=25717#25717 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Display from buffer
Hi, Thanks. It's working fine. -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=25643#25643 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] Multi screen display issue
Hi, I connected 2 monitors to my graphics card in such a way dat my desktop resolution is expanded doubly( width wise). My osg application renders a texture on both the screen contiguously by setting 2 seperate cameras for each screen, in the same way specified in osgCamera example. Everything is working fine both on windows and linux. In linux we configured the two monitors in such a way dat both having its own desktop and resolution. Now the same application is rendering only on one screen. what needs to be done? -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=25644#25644 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] Display from buffer
Hi, For displaying any .jpg/.tif file, we create texture and then doing so. Using OSG how to display pixels from a buffer straightaway as it could be done using openGL? Is it possible to by-pass osgDB::readImageFile(..) to read image content from buffer instead of from file? -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=25439#25439 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Display from buffer
Thanks. Yes. I m using osg::Image to set my pixel buffer. I set GL_LUMINANCE as internal pixel format. But I m getting only black image. My code looks like this, .. unsigned char* data; int width, height; width=4200; //source_image width height=4710;//source_image height long size = width * height; data = new unsigned char[size]; //Reading Image of width * height into buffer for(i=0;i(width * height); i++) data[i]=source_image[i]); //Setting image osg::ref_ptrosg::Image image = new osg::Image; image-allocateImage(width, height, 1, GL_LUMINANCE, GL_UNSIGNED_BYTE); image-setOrigin(osg::Image::BOTTOM_LEFT); image-setImage(width, height, 1, GL_LUMINANCE, GL_LUMINANCE, GL_UNSIGNED_BYTE,data, osg::Image::NO_DELETE); texture-setImage(image); My another question is, could it possible to display image without scaling down/up? Thanks -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=25509#25509 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] [3rdparty] Config url compile error?
Hi, I have just started working on osgEarth. I wrote my first code with osg2.8.2 to load a map something like ... #include osgEarth/Config ... Config conf; conf[url]=../data/world.tif; . Compiling the program gives an error saying dat ther s no predefinition for url. Other than Config.h any other file has to be included? Thank you! -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=24681#24681 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] GL_COLOR_MATERIAL setting problem?
Hi, I installed osg 2.8.2 by compiling all 3rd party sources including glut. I tried to run one of example, osgblendequation, it throws the following error, Error: Setting mode 'GL_COLOR_MATERIAL' via osg::StateSet::setMode(mode,value) ignored. The mode 'GL_COLOR_MATERIAL' is set by the osg::Material StateAttribute. Setting this as a mode fools osg's State tracking. Error: Setting mode 'GL_COLOR_MATERIAL' via osg::StateSet::setMode(mode,value) ignored. Is any of glut file missed out in my compilation? Thank you! -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=24596#24596 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] [osgPlugins] png, tif 3ds files reading problem
Hi, Recently I installed osg2.8.2. I compiled the sources (from .svn) successfully. But viewer is saying couldn't find plugin to read .png, tif of 3ds files even if osgdb_freetype.dll is in path and created from compilation. What needs to be done? Thank you! -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=24276#24276 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] Geotiff rendering?
Hi, Suppose when we add ive tiles to a group and render the group, all the tiles are placed at corresponding places according to their lat and lon. But when I m trying to do the same using just tif files it s not happening so. Instead, multiple tif tiles are overlaid one over other. Anyway tif is also having geo details rite? What needs to be done to render tiff just like ive? Thank you! -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=24002#24002 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Setting fading property to node
Hi, I tried with the following code to get fading effect from the node to be rendered . I don't get the effect. I wud like to know where I do mistake. . . osg::stateSet* statSet=node-getOrCreateStateSet(); statSet-setMode(GL_LIGHTING, osg::stateAttribute::OFF); statSet-setMode(GL_BLEND, osg::stateAttribute::ON); statSet-setRenderingHint(osg::stateSet::TRANSPARENT_BIN); osg::ref_ptrosg::Material material=new osg::Material; material-setAlpha(osg::Material::face::FRONT_AND_BACK,0.5); statSet-setAttribute(material.get()); . ... Thank you! Cheers, Akilan -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=20859#20859 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] Setting fading property to node
Hi, In my terrain I wud like to display the tiles with fading fashion as is available in osgText.Is it possible to do? Thank you! Cheers, Akilan -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=20799#20799 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] smooth layer transistion?
Hi, I have created a terrain DB with different resolution images covering same area. As and when the region is zoomed in, there is transistion from poor resolution image to higher resolution image. The transition is quite visible. Means that at particular level the entire poor resolution tile disappears and next layer is brought up. I would like it to happen so smoothly. Whether do I have to set mipmap filter to acquire such smooth transition? Thank you! Cheers, Akilan -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=19468#19468 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] Transforming on coordinate system
Hi, I have drawn a geometry normal to XY-plane and I would like to transform it in such a way that it must be normal to YZ-plane.I did rotation for 90 degree about X-axis. Will it do what I wanted to do? The corresponding code would seems to be , .. osg::Matrix rot=osg::Matrix::rotate(osg::DegreesToRadians(90.),osg::Vec3f(1.0,0.0,0.0)); .. Thank you! Cheers, Akilan -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=17275#17275 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] problem in camera rotation
Hi,
yeah. I found my geometry center as ( 0.04,0.075,0.0). So first I do the
rotation of 90 degree about z-axis and then translating my geometry to 0 by
subtracting the aboive center values.
Again I m getting my geometry is translated and half of the geometry is off
the view. Have a look at my code, I dont understand where I am making mistake.
void applyTexture(osg::Drawable* drawable, std::string imgName)
{
static std::string filePath = getenv(OSGHOME);
osg::ref_ptrosg::Image image = osgDB::readImageFile(filePath + imgName);
osg::ref_ptrosg::Texture2D tex2D = new osg::Texture2D;
tex2D-setImage(image.get());
tex2D-setResizeNonPowerOfTwoHint(false);
drawable-getOrCreateStateSet()-setTextureAttributeAndModes
(0, tex2D.get());
drawable-getOrCreateStateSet()-setMode(GL_LIGHTING,
osg::StateAttribute::OVERRIDE |
osg::StateAttribute::OFF);
osg::ref_ptrosg::TexEnv texEnv = new osg::TexEnv;
texEnv-setMode(osg::TexEnv::REPLACE);
drawable-getOrCreateStateSet()-setTextureAttributeAndModes
(0, texEnv.get());
}
osg::Geode* createGeometry()
{
float x = 0.0, y = 0.0;
float width=0.08 , height=0.15 ;
std::string imgName=\\images\\ring_active.png;
osg::Geometry* boxGeom = new osg::Geometry;
boxGeom-setName(myGeometry);
osg::Vec3Array* vertices = new osg::Vec3Array;
int _z=0.0;
vertices-push_back(osg::Vec3(x, y, _z));
vertices-push_back(osg::Vec3(x + width, y, _z));
vertices-push_back(osg::Vec3(x + width, y + height, _z));
vertices-push_back(osg::Vec3(x, y + height , _z));
boxGeom-setVertexArray(vertices);
osg::Vec3Array* normals = new osg::Vec3Array;
normals-push_back(osg::Vec3(0.0f,50.0f,1.0f));
boxGeom-setNormalArray(normals);
boxGeom-setNormalBinding(osg::Geometry::BIND_OVERALL);
osg::Vec4Array* colors = new osg::Vec4Array;
colors-push_back(osg::Vec4(0., 0., 0., 0.9));
boxGeom-setColorArray(colors);
boxGeom-setColorBinding(osg::Geometry::BIND_OVERALL);
//applying texture
osg::ref_ptrosg::Vec2Array texCoordArray = new osg::Vec2Array;
texCoordArray-push_back(osg::Vec2(0.f, 0.f));
texCoordArray-push_back(osg::Vec2(1.0, 0.f));
texCoordArray-push_back(osg::Vec2(1.0, 1.0));
texCoordArray-push_back(osg::Vec2(0.0, 1.0));
boxGeom-setTexCoordArray(0, texCoordArray.get());
applyTexture(boxGeom, imgName);
boxGeom-addPrimitiveSet(new osg::DrawArrays(GL_QUADS,0,4));
osg::StateSet* stateset = boxGeom-getOrCreateStateSet();
stateset-setMode(GL_BLEND,osg::StateAttribute::ON);
stateset-setRenderingHint(osg::StateSet::TRANSPARENT_BIN);
osg::Geode* _geode=new osg::Geode;
_geode-addDrawable(boxGeom);
_geode-setName(myGeode);
geometry_center=boxGeom-getBound().center();
return _geode;
}
int main( int argc, char **argv )
{
osg::Camera* g_camera=new osg::Camera;
g_camera-setProjectionMatrixAsOrtho2D(0,1,0,1.25);
g_camera-setReferenceFrame(osg::Transform::ABSOLUTE_RF);
g_camera-setClearMask(GL_DEPTH_BUFFER_BIT);
g_camera-setRenderOrder(osg::Camera::POST_RENDER);
//rotate
osg::ref_ptrosg::MatrixTransform rotMT=new
osg::MatrixTransform;osg::Matrix rmatrix;
rmatrix.makeRotate(osg::DegreesToRadians(45.),osg::Vec3f(0.0,0.0,1.0));
rotMT-setMatrix(rmatrix);
//translate
osg::ref_ptrosg::MatrixTransform transMT=new
osg::MatrixTransform;osg::Matrix tmatrix;
tmatrix.makeTranslate(osg::Vec3f(-0.04,-0.075,0.0));
transMT-setMatrix(tmatrix);
rotMT-addChild(transMT.get());
transMT-addChild(createGeometry());
g_camera-addChild(rotMT.get());
osgViewer::Viewer viewer;
viewer.setThreadingModel(osgViewer::Viewer::SingleThreaded);
viewer.setCameraManipulator( new osgGA::TrackballManipulator() );
viewer.addEventHandler(new Rot);
viewer.setSceneData(g_camera);
osg::Vec3d eye(osg::Vec3f(0.0,0.0,0.0));
osg::Vec3d center(osg::Vec3f(0.0,0.0,0.0));
osg::Vec3d up(osg::Vec3f(0.0,0.0,0.0));
viewer.getCameraManipulator()-setHomePosition(eye,center,up);
viewer.home();
viewer.realize();
while(!viewer.done())
viewer.frame();
return 0;
}
Cheers,
Akilan
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Re: [osg-users] problem in camera rotation
Hi, I changed the order of matrix manipulations and put everything in a single transformation only. But the result I m getting is same. The geometry is going out of view. I dont understand the problem. Pls anyone correct me. Thank you! Cheers, Akilan -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=17217#17217 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] problem in camera rotation
Hi,
I understand that this problem has already been discussed . But as I was not
able
to understand clearly I post my simple camera rotation problem., I written a
code
osg::refosg::Camera g_camera=new osg:::camera;
g_camera-setProjectionMatrix(osg::Matrix::ortho2D(0,1,0,1));
g_camera-setReferenceFrame(osg::Transform::ABSOLUTE_RF);
g_camera-setViewMatrix(osg::Matrix::Identity());
g_camera-setClearMask(GL_DEPTH_BUFFER_BIT);
g_camera-setRenderOrder(osg::camera::POST_RENDER);
g_camera-setAllowEventFocus(true);
g_camera-addChild(create_geometry()); //create_geometry() fn will return a
geode with //a drawable added
..
..
...
osgViewer::Viewer viewer;
viewer.setSceneData(g_camera.get());
.
while(!viewer.done())
{
if(isKey_R_pressed){
..
osg::Matrixd vmat=g_camera-getViewMatrix(); //here i get the camera thru
traversal
vmat.makeRotate(osg::DegreesToRadians(45.),osg::osg::Vec3f(1.,0.,0.));
g_camera-setViewMatrix(vmat);
.}
viewer.frame();
}
}
I dont understand how my geometry is not getting rotated?
What is the problem in this?
}
}
Thank you!
Cheers,
Akilan
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Re: [osg-users] problem in camera rotation
Hi, Actually, I would like to simulate a navigation control for north orientation as available in google earth. I wanted to rotate the control along the X-axis(+/-) that will get reflected on geocentric virtual earth. I set the camera to the geometry(navigation control). What I thought was that rotating the camera would give the feel of geometry rotation. Is it the correct way to do? Thank you! Cheers, Akilan -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=17141#17141 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Navigation control
Hi, That s fine. But I wanted to know about the type of GUI component has been used for navigation. osgWidget is what I have to choose for such design? What type of file is that?? Thank you! Cheers, Akilan -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=16522#16522 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] Navigation control
Hi, I would like to design a navigation control similar to the one what google earth is using for navigating my terrain DB. I have OSG 2.2 installed. Do I need anything extra to do that? osgWidget is not available in that. How to do that? Thank you! Cheers, Akilan -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=16463#16463 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Visualizing Terrain DB on web page
Hi, I updated my firefox 3.0 with the patch given in the following link, http://3d.cineca.it/storage/OSG4Web_test/Windows/test.html . Still I couldn't open my osg file on firefox. Should I do anything more? Thank you! Cheers, Akilan -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=16384#16384 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Visualizing Terrain DB on web page
Hi, Yeah, I did in the same way as u said. Wrapped OSG functions into ActiveX control and deployed with IE. It s working fine. But it is not happening so with Firefox. Yes, I need help to deploy using Firefox. Thank you! Cheers, Akilan -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=16320#16320 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Visualizing Terrain DB on web page
Hi, I am using Internet Explorer 6.0. And one more thing I have OSG2.2. Is it mandatory to have 2.9.x version to do this. Once the plug-in is added, could we directly see the .ive file on explorer? Thank you! Cheers, Akilan -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=16223#16223 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] Visualizing Terrain DB on web page
Hi, I would like to visualize my terrain DB constructed using osgdem on web page? Could it be possible? Is there any plug-in to do so? Thank you! Cheers, Akilan -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=16008#16008 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] How to decode .ive file?
Hi, My terrain DB contains lots of .ive files(binary files). I want to decode the file in program to know about its children's details. This I want to do before running my viewer. Is OSG provides interface for such activities? One more query is, I have .ive file content in a buffer so that instead of setting the filename to readNode(), is there any interface to set the buffer directly to construct node in OSG? ... Thank you! Cheers, Akilan -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=15125#15125 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] Getting the name of the tile being currently loaded?
Hi,
I m using OSG2.2.
I created terrain database (virtual earth) consisting tiles (.ive files) for
8 levels. It s fact that as and when the view is changed(zoom in/out) the
corresponding tile will be loaded dynamically(paging). Here,
First thing is that in my code I want to capture the name of the tile/file
being currently loaded. I run the viewer like,
while(!viewer.done()){
viewer.frame();
}
secondly, if the corresponding tile is missing in search path, it throws
warning message for the missed tile at console with tile name as well. I want
to capture the same message in code.
How could it be done??
If the osg::notify could do it, pls tell me the level of notification.
...
Thank you!
Cheers,
Akilan
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Re: [osg-users] [osgPlugins] Failed to read unsigned int value??
Hi . I am using VPB 0.9.1 only for OSG2.2 -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=11029#11029 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] [osgPlugins] Failed to read unsigned int value??
Hi, While adding blumarble's .ive file as a child to a group in my application, I m getting the following warning and error, Warning: Could not find plug-in to read objects from file C:\BlueMarble\output_L0_X0_Y0_Subtile.ive Error reading file: DataInputStream::readUInt():Failed to read unsigned int value I have installed OSG2.2(on Windows XP) in my system and all my dlls are in OSG_FILE_PATH and PATH too. What could be the problem Thank you. -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=10889#10889 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Jerky display?
Hi I bit know about the concept of quad tree. But I want to know applying the concept on OSG construction. Can I get any reference for organizing the scenegraph in quad tree form? Pls help me out. Akilan A -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=10690#10690 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Jerky display?
Hi
The following is the environment which i am working on,
Hardware configuration:
HP xw4400 Workstation
Intel(R) Core(TM)2 CPU 6700 @ 2.66GHz, 2GB RAM
NVIDIA Quadro FX 3500
OS:
MS Windows XP Professional Version 2002
Service Pack 3, v.3244
OSG:
OSG2.2
The following set of code shows about how I am building scene graph for terrian
visualization,
//the fileTerrainModels.txt Contains list of terrain models(.osga files) with
absolute path
//all are geographic models with datum 'WGS-84' and 'UTM' projection
ifstream fin(TerrainModels.txt);
while(!fin.eof()){
finstr;
if(strstr(str,.osga)!=NULL){
osg::ref_ptrosg::Fog fog=new osg::Fog;
fog-setColor(osg::Vec4(.45,.45,.45,1.));
fog-setStart(0.f);
fog-setEnd(50.f);
fog-setDensity(1.f);
fog-setMode(osg::Fog::LINEAR);
fog-setFogCoordinateSource(osg::Fog::FRAGMENT_DEPTH);
osg::StateSet *statSet=new osg::StateSet();
statSet-setMode(GL_BLEND,osg::StateAttribute::ON);
statSet-setMode(GL_DEPTH_TEST,osg::StateAttribute::OFF);
statSet-setRenderingHint(osg::StateSet::TRANSPARENT_BIN);
statSet-setAttributeAndModes(fog.get(),osg::StateAttribute::ON);
osg::PagedLOD *plod = new osg::PagedLOD();
plod-setName(str);
plod-setRangeMode(osg::PagedLOD::DISTANCE_FROM_EYE_POINT);
plod-setFileName(0, str);
plod-setPriorityOffset(0, 1.f);
plod-setPriorityScale(0, 1.f);
plod-setRange(0, 50.f, 100.f);
plod-setStateSet(statSet);
group-addChild(plod);
}else if(strstr(str,bluemarble.ive)==0) //for specifically adding
virtual earth
group-addChild(osgDB::readNodeFile(str));
}
fin.close();
osgViewer::Viewer viewer;
osgUtil::Optimizer optimzer;
optimzer.optimize(group.get());
viewer.setSceneData(group.get());
viewer.addEventHandler( new
osgGA::StateSetManipulator(viewer.getCamera()-getOrCreateStateSet()) );
viewer.addEventHandler(new osgViewer::ThreadingHandler);
viewer.setCameraManipulator(new osgGA::TerrainManipulator());
viewer.realize();
while(!viewer.done()){
viewer.frame();
}
Let me explain the problem,
I am trying to load around 8000-9000 osg terrain models which are covering part
of india.
As I have set the PagedLOD range 50-100, when I enter the range(zooming-down
thru virtual earth), all the terrain models start loading and from that range
onwards I am not able to zoom-down freely. It becomes very slow and the view
also jerks.
Please correct me.
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