Re: [osg-users] noob question about texture3d
Thanks that helped a bit. Any idea why Code: osg::ref_ptrosg::Image ima = new osg::Image; ima-allocateImage(160, 200, 160, GL_LUMINANCE, GL_UNSIGNED_BYTE); std::cout ima-getImageSizeInBytes() std::endl; returns 32000 instead of the expected 512? -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=17673#17673 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] noob question about texture3d
Hi Otto,
On Mon, Sep 28, 2009 at 9:34 AM, Otto Cologne schur...@gmx.de wrote:
Any idea why
Code:
osg::ref_ptrosg::Image ima = new osg::Image;
ima-allocateImage(160, 200, 160, GL_LUMINANCE, GL_UNSIGNED_BYTE);
std::cout ima-getImageSizeInBytes() std::endl;
returns 32000 instead of the expected 512?
The osg::Image class has a series of methods for getting the size of the image:
/** Return the number of bits required for each pixel. */
inline unsigned int getPixelSizeInBits() const { return
computePixelSizeInBits(_pixelFormat,_dataType); }
/** Return the number of bytes each row of pixels occupies
once it has been packed. */
inline unsigned int getRowSizeInBytes() const { return
computeRowWidthInBytes(_s,_pixelFormat,_dataType,_packing); }
/** Return the number of bytes each image (_s*_t) of pixels occupies. */
inline unsigned int getImageSizeInBytes() const { return
getRowSizeInBytes()*_t; }
/** Return the number of bytes the whole row/image/volume of
pixels occupies. */
inline unsigned int getTotalSizeInBytes() const { return
getImageSizeInBytes()*_r; }
Each of these in term computes the next dimension up, from a single
pixel to a row, to whole 2d image, to a while 3d image. In hindsight
the naming could have been chosen better. For 3D images you'll want
to use getTotalSizeInBytes().
Robert.
___
osg-users mailing list
osg-users@lists.openscenegraph.org
http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] OSG_FEM
Hi Umit, Thanks for the answer. But I actually wondered if there are any finite element analysis kit compatible with OSG or has anyone coded a numerical analysis package (ie: linear decomposition, spectral decomposition, linear and/or nonlinear optimization, matrix analysis routiones) for the OSG distribution? Regards, Ugras From: Ümit Uzun umituzu...@gmail.com To: OpenSceneGraph Users osg-users@lists.openscenegraph.org Sent: Monday, September 28, 2009 1:19:36 PM Subject: Re: [osg-users] OSG_FEM Hi Ugras, Actually I can't understand very well what you really want but you can look at http://www.simlab-soft.com/Products.html for modeling kit that can be used with OSG. Regards. Ümit Uzun 2009/9/28 Ugras Erdogan ugraserdo...@yahoo.com Dear All, Would anyone suggest a finite element modeling kit that can be used with OSG? I haven't noticed yet, but is there any numerical analysis package that is bundled with OSG distribution? Best Regards, Ugras ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] [osgPPU] Using osgPPU
Hi,
Here is the minimal code I use that may help somebody in the future:
It lacks some comments but it's because I'm not sure I understand everything (I
have been helped to get that)
Code:
#include osgViewer/Viewer
#include osgDB/ReadFile
#include osg/ShapeDrawable
#include iostream
#include osg/Texture2D
#include osg/Camera
#include osgPPU/Processor.h
#include osgPPU/UnitInOut.h
#include osgPPU/UnitOut.h
#include osgPPU/UnitTexture.h
#include osgPPU/ShaderAttribute.h
osg::Texture* createRenderTexture(int tex_width, int tex_height, bool depth)
{
// create simple 2D texture
osg::Texture2D* texture2D = new osg::Texture2D;
texture2D-setTextureSize(tex_width, tex_height);
texture2D-setResizeNonPowerOfTwoHint(false);
texture2D-setFilter(osg::Texture2D::MIN_FILTER,osg::Texture2D::LINEAR);
texture2D-setFilter(osg::Texture2D::MAG_FILTER,osg::Texture2D::LINEAR);
texture2D-setWrap(osg::Texture2D::WRAP_S,osg::Texture2D::CLAMP_TO_BORDER);
texture2D-setWrap(osg::Texture2D::WRAP_T,osg::Texture2D::CLAMP_TO_BORDER);
texture2D-setBorderColor(osg::Vec4(1.0f,1.0f,1.0f,1.0f));
osg::Image *image = new osg::Image();
image-allocateImage(tex_width, tex_height, 1, GL_RGBA, GL_FLOAT);
memset(image-data(), 0, image-getTotalSizeInBytes());
texture2D-setImage(image);
texture2D-setUnRefImageDataAfterApply(true);
// setup float format
if (!depth)
{
texture2D-setInternalFormat(GL_RGBA16F_ARB);
texture2D-setSourceFormat(GL_RGBA);
texture2D-setSourceType(GL_FLOAT);
}else{
texture2D-setInternalFormat(GL_DEPTH_COMPONENT);
}
return texture2D;
}
//--
// Quad
//--
osg::Drawable* createSquare(float textureCoordMax=1.0f)
{
// set up the Geometry.
osg::Geometry* geom = new osg::Geometry;
osg::Vec3Array* coords = new osg::Vec3Array(4);
(*coords)[0].set(-1.0f,0.0f,1.0f);
(*coords)[1].set(-1.0f,0.0f,-1.0f);
(*coords)[2].set(1.0f,0.0f,-1.0f);
(*coords)[3].set(1.0f,0.0f,1.0f);
geom-setVertexArray(coords);
osg::Vec3Array* norms = new osg::Vec3Array(1);
(*norms)[0].set(0.0f,-1.0f,0.0f);
geom-setNormalArray(norms);
geom-setNormalBinding(osg::Geometry::BIND_OVERALL);
osg::Vec2Array* tcoords = new osg::Vec2Array(4);
(*tcoords)[0].set(0.0f,0.0f);
(*tcoords)[1].set(0.0f,textureCoordMax);
(*tcoords)[2].set(textureCoordMax,textureCoordMax);
(*tcoords)[3].set(textureCoordMax,0.0f);
geom-setTexCoordArray(0,tcoords);
geom-addPrimitiveSet(new
osg::DrawArrays(osg::PrimitiveSet::QUADS,0,4));
return geom;
}
//--
int main(int argc, char **argv)
{
// construct the scene
osg::Group* node = new osg::Group();
osg::Drawable* quad = createSquare();
osg::Geode* geode = new osg::Geode();
geode-addDrawable(quad);
node-addChild(geode);
// construct the viewer.
osgViewer::Viewer* viewer = new osgViewer::Viewer();
unsigned int screenWidth;
unsigned int screenHeight;
osg::GraphicsContext::getWindowingSystemInterface()-getScreenResolution(osg::GraphicsContext::ScreenIdentifier(0),
screenWidth, screenHeight);
unsigned int windowWidth = 640;
unsigned int windowHeight = 480;
viewer-setUpViewInWindow((screenWidth-windowWidth)/2,
(screenHeight-windowHeight)/2, windowWidth, windowHeight);
viewer-setThreadingModel(osgViewer::Viewer::SingleThreaded);
// stateset
osg::StateSet *stateSet = quad-getOrCreateStateSet();
// texture
osg::Texture2D* texture = new osg::Texture2D;
osg::Image* image = osgDB::readImageFile(PathToImage);
if (!image)
{
std::cout couldn't find texture, quiting. std::endl;
return 1;
}
texture-setImage(image);
osgPPU::UnitTexture* unitTexture= new osgPPU::UnitTexture(texture);
//
// First
osgPPU::UnitInOut* unitInOut= new osgPPU::UnitInOut();
unitInOut-setInputToUniform(unitTexture,textureNameInShader,true);
osgPPU::ShaderAttribute* shaderAttribute= new osgPPU::ShaderAttribute();
{
osg::Shader* shader= new osg::Shader(osg::Shader::FRAGMENT);
const char* shaderSource=
uniform sampler2D textureNameInShader;\n
void main()\n
{\n
Re: [osg-users] [3rdparty] osgOcean collision detection
Hi Dimitrios, I tried to write a function during the weekend. It works but the result is not so accurate. The floating objects are going up and down but they're not completely synchronized with the ocean surface. It seems that they are moving on a different phase or something. Here's my code Sorry, but since I'm not working on this right now as I mentioned before, I can't spend too much time helping you out with this... But one thing I found odd: unsigned int frame = ++_oldFrame; This will increment _oldFrame in place, and ALSO store the result in frame. So if _oldFrame was 1 before this line, it will be 2 after and the frame variable will also contain 2. Is this what you want? I don't think that you should be incrementing _oldFrame on each call of your function, it might change how the ocean surface is rendered... Try frame = _oldFrame + 1 instead. Other than that I don't see anything suspect in your code, but it's hard to debug things by email - you have the code in front of you and a test case that doesn't give the right results, so you're best placed to debug it... J-S -- __ Jean-Sebastien Guayjean-sebastien.g...@cm-labs.com http://www.cm-labs.com/ http://whitestar02.webhop.org/ ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] OSG Windows XP environment setup??
Hi All, I have (successfully, I think) compiled both Debug and Release of the current versions of OSG::Present3D. I am on WinXP SP2, and using VS 9 (2008) When I run present3dd C:\OSG_dev\OSG-Data\introduction.p3d from within the IDE, it runs as expected. But, when I run it from a standard command-line console, present3d crashes on find file Present3D/OpenSceneGraphlogo.png - it does the same anytime it tries to 'find file'. I am not sure where to find a definitive statement how my environment should be set up? In PATH I have included: C:\OSG\bin\; C:\OSG_dev\3rdParty\bin; C:\OSG_dev\OSG-Data; ...but no other environmental variables. Running Present3Dd for introduction.p3d on the command-line yields the error (in a windows dialogue): Debug assertion failed! Program: C:\OSG\bin\present3Dd.exe File: f:\dd\vctools\crt_bld\self_x86\crt\xstring *** what's the f: ??! - where's that coming from *** Line: 1595 Expression: string subscript out of range. ... -- Any suggestions to get things running normally would be appreciated, thanks. :-) John Montgomery Campfield, Glassel, Scotland. Tel: 013398 82900 Mob: 07592 463 757 Website: http://www.thevigils.co.uk The University of Aberdeen is a charity registered in Scotland, No SC013683. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] OSG Windows XP environment setup?? SOLVED
Not clear why, but... Each time I was running from within C:\OSG_dev\OSG-Data and therefore, using only 'introduction.p3d' However, running from 'C:\Documents and Settings' - thus requiring a full-path for the input file - ' C:\OSG_dev\OSG-Data\introduction.p3d' It worked! :-) John Montgomery, Glassel, Scotland. Website: http://www.thevigils.co.uk -Original Message- From: osg-users-boun...@lists.openscenegraph.org [mailto:osg-users-boun...@lists.openscenegraph.org] On Behalf Of Montgomery, John T. Sent: 28 September 2009 15:14 To: OSG (osg-users@lists.openscenegraph.org) Subject: [osg-users] OSG Windows XP environment setup?? Hi All, I have (successfully, I think) compiled both Debug and Release of the current versions of OSG::Present3D. I am on WinXP SP2, and using VS 9 (2008) When I run present3dd C:\OSG_dev\OSG-Data\introduction.p3d from within the IDE, it runs as expected. But, when I run it from a standard command-line console, present3d crashes on find file Present3D/OpenSceneGraphlogo.png - it does the same anytime it tries to 'find file'. I am not sure where to find a definitive statement how my environment should be set up? In PATH I have included: C:\OSG\bin\; C:\OSG_dev\3rdParty\bin; C:\OSG_dev\OSG-Data; ...but no other environmental variables. Running Present3Dd for introduction.p3d on the command-line yields the error (in a windows dialogue): Debug assertion failed! Program: C:\OSG\bin\present3Dd.exe File: f:\dd\vctools\crt_bld\self_x86\crt\xstring *** what's the f: ??! - where's that coming from *** Line: 1595 Expression: string subscript out of range. ... -- Any suggestions to get things running normally would be appreciated, thanks. :-) John Montgomery Campfield, Glassel, Scotland. Tel: 013398 82900 Mob: 07592 463 757 Website: http://www.thevigils.co.uk The University of Aberdeen is a charity registered in Scotland, No SC013683. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org The University of Aberdeen is a charity registered in Scotland, No SC013683. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] OSG Windows XP environment setup??
You'll need to set OSG_FILE_PATH to include the OpenSceneGraph-Data directory. If you don't have it, it's under svn. See the wiki. Paul Martz Skew Matrix Software LLC _http://www.skew-matrix.com_ http://www.skew-matrix.com/ +1 303 859 9466 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] [3rdparty] osgOcean collision detection
Hi, I checked the _oldFrame and you are absolutely right. Thanks! Dimitrios -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=17686#17686 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] [3rdparty] osgOcean collision detection
Hi Dimitrios, I checked the _oldFrame and you are absolutely right. So does that mean that my suggestion fixed it for you? J-S -- __ Jean-Sebastien Guayjean-sebastien.g...@cm-labs.com http://www.cm-labs.com/ http://whitestar02.webhop.org/ ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Terrain generator compatible with OSG
Hi, Thanks both for your answers. Sorry, but I have been disconnected the last week. I am doing my final year project. I have designed a multimodal interface for control and monitor UAVs (Unmanned Aerial Vehicles). I have many tools: Head Tracking, Touch screens, 3D sound, etc... But I want to design with OGS a scenario with a plane with a mobile camera following a road in a 3D space and simulate a real situation for the station. So I only need a 3D scenario with a road, and I will add models imported form 3D studio like cars, trucks, etc... I am trying to install the programs that you recommended me, Jason. Thanks for the help. All new ideas are welcome!!! Thank you! Cheers, Felipe -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=17687#17687 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Terrain generator compatible with OSG
Felipe Lemus wrote: I am trying to install the programs that you recommended me, Jason. Thanks for the help. All new ideas are welcome!!! The decision between VirtualPlanetBuilder and OSGEarth comes down to whether you want to pre-build a database from the source data (VPB) or have the scen built on-the-fly from the source data (OSGEarth). They both have their advantages. VPB scenes are very fast to load, all the difficult work having been done up front during the VPB scene build stage. OSGEarth can more easily display up-to-date changing terrain/ortho data as it builds it all on the fly. Thank you! Cheers, Felipe -- Chris 'Xenon' Hanson, omo sanza lettere Xenon AlphaPixel.com PixelSense Landsat processing now available! http://www.alphapixel.com/demos/ There is no Truth. There is only Perception. To Perceive is to Exist. - Xen ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] [help]MinGW building error
Hi, Rain It seems like this version of MinGW´s GCC does not define the preprocessor directive _GLIBCXX_USE_WCHAR_T, used in the iosfwd include for defining the wchar streams. I was getting the same error and then forced the directive definition by passing the -D_GLIBCXX_USE_WCHAR_T option to GCC´s invocation (or DEFINES += _GLIBCXX_USE_WCHAR_T in the .pro file if you´re using qmake). My code compiled well, but it happens that in my case the methods that need this #define are not actually used, so be careful. Hope this helps! Att, Thiago -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=17690#17690 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] osgviewerQtWidget Quadbuffer Stereo Alpha Problems
HI all, I'm having two difficulties with osgviewerQtWidget on linux, and I was hoping someone else may have already seen this and can give me some insight as to my troubles. In main.cpp, I added the following lines to turn on quadbuffer stereo. QPointertestMainWin myMainWindow = new testMainWin; #if DO_OUTBOARD_WINDOW QPointertestOutboardWin mySecondaryWindow = new testOutboardWin; #endif /* added these 3 lines */ osg::DisplaySettings* ds = osg::DisplaySettings::instance(); ds-setStereo( true ); ds-setStereoMode( osg::DisplaySettings::QUAD_BUFFER ); // The .ui file uses the Promoted widget, CompositeViewerQOSG osg::ref_ptrCompositeViewerQOSG compositeViewer = myMainWindow-ui.osgGraphicsArea; osg::ref_ptrViewQOSG view1 = new ViewQOSG( myMainWindow-ui.graphicsView1 ); view1-setObjectName(ViewQOSG 1); When I do so, I get the following warning/error Warning: detected OpenGL error 'invalid operation' after RenderBin::draw(,) quadbuffer stereo is anabled on the system and I have other OGL apps that work as expected. It appears that the context is valid but I haven't been able to retrieve the visual it thinks it's using to see if it's picked an appropriate one. ANAGLYPHIC stereo works as expected. My other issue is trying to get a visual with alpha. Similarly... QPointertestMainWin myMainWindow = new testMainWin; #if DO_OUTBOARD_WINDOW QPointertestOutboardWin mySecondaryWindow = new testOutboardWin; #endif /* added these two lines */ osg::DisplaySettings* ds = osg::DisplaySettings::instance(); ds-setMinimumNumAlphaBits( 1 ); // The .ui file uses the Promoted widget, CompositeViewerQOSG osg::ref_ptrCompositeViewerQOSG compositeViewer = myMainWindow-ui.osgGraphicsArea; osg::ref_ptrViewQOSG view1 = new ViewQOSG( myMainWindow-ui.graphicsView1 ); view1-setObjectName(ViewQOSG 1); This gives me X Error: BadMatch (invalid parameter attributes) 8 Extension:143 (Uknown extension) Minor opcode: 5 (Unknown request) Resource id: 0x6400026 Error: In Texture::Extensions::setupGLExtensions(..) OpenGL version test failed, requires valid graphics context. Segmentation fault which I'm assuming is because the context is either invalid or not current. If anyone has seen these problems and has some insight, I'd be grateful for your experience. Thanks Scott ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
