[osg-users] Increasing line width
Hi, I want to highlight part of CAD model. I have big symbol with lines, that have different line width. Now I want to render that lines with +4.0f linewidth according to original width of every line. What is the best approach? Thank you! Cheers, Filip -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=50642#50642 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] LineSegmentIntersector gives incorrect results (intersections missing)
Hi,
I've got a problem with line segment intersector. Sometimes I get only one
intersection (on the bootom side of the table), while I should get two.
Please check the screenshot.
Do you have any idea why this happens? What should I do?
STLFILE.stl (ZIPPED) is attached
Thank you!
Cheers,
Peter
Hold CTRL key to activate intersection output.
This is the code I use:
Code:
#include stdafx.h
#include osgViewer/Viewer
#include osgDB/ReadFile
#include osgUtil/LineSegmentIntersector
class PickHandler : public osgGA::GUIEventHandler
{
public:
virtual bool handle( const osgGA::GUIEventAdapter ea,
osgGA::GUIActionAdapter aa )
{
if ( ea.getEventType()!=osgGA::GUIEventAdapter::RELEASE ||
ea.getButton()!=osgGA::GUIEventAdapter::LEFT_MOUSE_BUTTON ||
!(ea.getModKeyMask()osgGA::GUIEventAdapter::MODKEY_CTRL) )
return false;
osgViewer::Viewer* viewer = dynamic_castosgViewer::Viewer*(aa);
if ( viewer ){
osg::ref_ptrosgUtil::LineSegmentIntersector intersector =
new
osgUtil::LineSegmentIntersector(osgUtil::Intersector::WINDOW, ea.getX(),
ea.getY());
osgUtil::IntersectionVisitor iv( intersector.get() );
iv.setTraversalMask( ~0x1 );
viewer-getCamera()-accept( iv );
if ( intersector-containsIntersections() ){
const
osgUtil::LineSegmentIntersector::Intersection result =
*(intersector-getIntersections().begin());
printf(Intersection count:%d. Coordinates: %.2f, %.2f,
%.2f\n,
intersector-getIntersections().size(),
result.getWorldIntersectPoint().x(),result.getWorldIntersectPoint().y(),result.getWorldIntersectPoint().z());
}
}
return false;
}
};
int main( int argc, char** argv )
{
osg::ref_ptrosg::Node model1 = osgDB::readNodeFile( STLFILE.stl );
osg::ref_ptrosg::Group root = new osg::Group;
root-addChild( model1.get() );
osg::ref_ptrPickHandler picker = new PickHandler;
osgViewer::Viewer viewer;
viewer.setSceneData( root.get() );
viewer.addEventHandler( picker.get() );
return viewer.run();
}
--
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=50644#50644
Attachments:
http://forum.openscenegraph.org//files/intersection_errors_639.png
http://forum.openscenegraph.org//files/stlfile_974.zip
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Re: [osg-users] Increasing line width
Take a look at the createAxis() in the osgbillboard.cpp file for the osgbillboard example. There's code in there to set linewidth... -Shayne -Original Message- From: osg-users-boun...@lists.openscenegraph.org [mailto:osg-users-boun...@lists.openscenegraph.org] On Behalf Of Filip Arlet Sent: Wednesday, October 17, 2012 3:55 AM To: osg-users@lists.openscenegraph.org Subject: [osg-users] Increasing line width Hi, I want to highlight part of CAD model. I have big symbol with lines, that have different line width. Now I want to render that lines with +4.0f linewidth according to original width of every line. What is the best approach? Thank you! Cheers, Filip -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=50642#50642 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.or g ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Increasing line width
On Wed, Oct 17, 2012 at 9:18 AM, Tueller, Shayne R Civ USAF AFMC 519 SMXS/MXDEC shayne.tuel...@hill.af.mil wrote: Take a look at the createAxis() in the osgbillboard.cpp file for the osgbillboard example. There's code in there to set linewidth... Rather than altering the model (which break displaylists or other compiled geometry representations and requires DYNAMIC datavariance) I recommend re-drawing the highlighted part one more time, after the rest of the model has drawn itself. You can usually use a nodemask to perform this trick. You may wish to clone the original entity, set the line width wider, and draw that clone, so you don't disrupt the state of the original. Set your Z-buffer depth test to GL_LEQUAL so that re-drawing the same part actually draws it again, over top of the copy already represented in the Z-buffer. -- Chris 'Xenon' Hanson, omo sanza lettere. xe...@alphapixel.com http://www.alphapixel.com/ Training • Consulting • Contracting 3D • Scene Graphs (Open Scene Graph/OSG) • OpenGL 2 • OpenGL 3 • OpenGL 4 • GLSL • OpenGL ES 1 • OpenGL ES 2 • OpenCL Digital Imaging • GIS • GPS • Telemetry • Cryptography • Digital Audio • LIDAR • Kinect • Embedded • Mobile • iPhone/iPad/iOS • Android ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] X11 Trouble, Building OSG with OpenGL ES 2.0
Chris, I've also done some work toward pure EGL support, intending to improve support for Android in OSG. How far along is your EGL work? I've got most of the EGL context and surface management done in implementations of osg::GraphicsContext::WindowingSystemInterface and osgViewer::GraphicsWindow. I could separate the pure EGL calls from my Android-specific code to create a osgViewer::GraphicsWindowEGL that implements closeImplementation() makeCurrentImplementation() realizeImplementation() releaseContextImplementation() swapBuffersImplementation() Then, it would be straightforward to subclass GraphicsWindowEGL to make a GraphicsWindowAndroid or a GraphicsWindowLinuxEGL that would implement the remaining virtuals like GraphicsWindow::checkEvents(). Thoughts? James Athey APX Labs From: Chris Hanson xe...@alphapixel.commailto:xe...@alphapixel.com Reply-To: OpenSceneGraph Users osg-users@lists.openscenegraph.orgmailto:osg-users@lists.openscenegraph.org Date: Monday, October 15, 2012 10:14 AM To: osg-users@lists.openscenegraph.orgmailto:osg-users@lists.openscenegraph.org osg-users@lists.openscenegraph.orgmailto:osg-users@lists.openscenegraph.org Subject: Re: [osg-users] X11 Trouble, Building OSG with OpenGL ES 2.0 my current system is running with a X11, but it would be nice just to kick it? Did you get it running without x11? Yes. However, there was a lot of OSG Windows and Linux support code that needed writing and updating in order to support pure EGL calls (instead of EGL calls that also rely on X11), so we ended up creating the EGL context outside of OSG and using osgViewerEmbedded, which worked ok. If you're interested in having full and proper EGL support, we could possibly pick up the work I began, and finish it in a reasonable amount of budget. -- Chris 'Xenon' Hanson, omo sanza lettere. xe...@alphapixel.commailto:xe...@alphapixel.com http://www.alphapixel.com/ Training • Consulting • Contracting 3D • Scene Graphs (Open Scene Graph/OSG) • OpenGL 2 • OpenGL 3 • OpenGL 4 • GLSL • OpenGL ES 1 • OpenGL ES 2 • OpenCL Digital Imaging • GIS • GPS • Telemetry • Cryptography • Digital Audio • LIDAR • Kinect • Embedded • Mobile • iPhone/iPad/iOS • Android ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] X11 Trouble, Building OSG with OpenGL ES 2.0
I've also done some work toward pure EGL support, intending to improve support for Android in OSG. How far along is your EGL work? I've got most of the EGL context and surface management done in implementations of osg::GraphicsContext::WindowingSystemInterface and osgViewer::GraphicsWindow. Mine never got that far. I think started with GraphicsWindowX11 (which if I recall, has some EGL support) and tried removing all the X11 code, substituting it with the proper EGL replacements. I didn't get all that far, because the PowerVR emulator wouldn't run properly on the Linux box we were using for testing. At that point, we discussed the clients ACTUAL needs as opposed to the requirements and realized that using GraphicsWindowEmbedded was really what they needed anyway, so the work was abandoned. I could separate the pure EGL calls from my Android-specific code to create a osgViewer::GraphicsWindowEGL that implements closeImplementation() makeCurrentImplementation() realizeImplementation() releaseContextImplementation() swapBuffersImplementation() Then, it would be straightforward to subclass GraphicsWindowEGL to make a GraphicsWindowAndroid or a GraphicsWindowLinuxEGL that would implement the remaining virtuals like GraphicsWindow::checkEvents(). Thoughts? That seems pretty logical to me, but I think you'd want to discuss it with some of the other Android and iOS guys and see how it would fit with that. It would seem that GraphicsWindowLinuxEGL, GraphicsWindowWin32EGL and GraphicsWindowPureEGL would make sense. Our target was an embedded Linux with EGL/GLES but no X11, so we needed a solution that didn't care about events and such that could never arrive anyway. PureEGL should work on Linux or Windows or Mac, if your EGL implementation is able to open a context without specifying a default display or existing window to attach it to. -- Chris 'Xenon' Hanson, omo sanza lettere. xe...@alphapixel.com http://www.alphapixel.com/ Training • Consulting • Contracting 3D • Scene Graphs (Open Scene Graph/OSG) • OpenGL 2 • OpenGL 3 • OpenGL 4 • GLSL • OpenGL ES 1 • OpenGL ES 2 • OpenCL Digital Imaging • GIS • GPS • Telemetry • Cryptography • Digital Audio • LIDAR • Kinect • Embedded • Mobile • iPhone/iPad/iOS • Android ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] nVidia bug with multiple windows
Hi J-S, That's a good idea, and I just submitted the example to them. I'll go ahead and post the zip file here too just for posterity, as it's self-contained other than the Visual Studio 2010 runtimes. Actually, I posted it via their website and not directly to that e-mail address, perhaps I'll do that as well. My initial plan was to put it on their dev forums, but apparently they're still down from the big security breach a few months ago! Thanks- Baker -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=50650#50650 Attachments: http://forum.openscenegraph.org//files/20121017_nvidia_osg_multiplewindowissue_180.zip ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] [vpb] On adding GL_FLOAT / GL_LUMINANCE32F Texture Support
I need to retain my texture information in a full 32 bit float format as my textures store temperature values in high precision celsius units. I added a parser to GDAL to load my terrain and texture datasets from their respective file formats and that part is working just fine. Looking over the osgDem options I see --RGBA32F and --RGB32F options but what I need is a --LUMINANCE32F option. So, I am digging through the code to figure out how to do this. I have found the point in Destination.cpp where the image sets are being retrieved and I checked the GL pixel format and data type of the image instances at that point. They show GL_FLOAT as the pixel data type and GL_RGBA as the pixel data format. Can you direct me to the point that the incoming texture data is being converted from GL_LUMINANCE32F to GL_RGBA? I would like to modify it so that my textures were not chopped and quantized so that I can retain the incoming precision and units. Thanks, Paul -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=50651#50651 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] osg::Sequence boundingsphere
Hi, Is there a reason why an osg::Sequence does not calculates its boundingsphere based only on its active child (rather than using all of them)? I can define my own Sequence and override the getBounds() method; but I want to know why it is not the default behavior. Thanks Marc-Andre ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] [forum] Wiki editing contact
Hi all, Who is responsible for assigning permissions to edit the OSG wiki? I followed the instructions here: http://www.openscenegraph.org/projects/osg/wiki/About/WikiEditing but have had no response. Some of the information on the wiki is woefully out of date and it would make sense to get community help to fix it. Regards, Phil -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=50653#50653 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] osg::Sequence boundingsphere
Hi Marc-Andre, On 18/10/12 11:30, Marc-André Labrie wrote: Is there a reason why an osg::Sequence does not calculates its boundingsphere based only on its active child (rather than using all of them)? I can define my own Sequence and override the getBounds() method; but I want to know why it is not the default behavior. From the source it looks like manually setting the traversal mode to TRAVERSE_ACTIVE_CHILDREN would do the trick. But it does feel like a better default IMO. Cheers, /ulrich ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Memory usage
Hi Nikos, On 13/10/12 1:29, Nikos Babasakalis wrote: Using test data from the external application and saving the graph to osg files, I observed that their size is very big (88 MB in one case and 115 MB in another). Moreover the memory consumption is very high (about 130 MB in one case and 350 MB in another) and it will be a serious problem when trying to depict more than one sets of data (in different child windows of the MDI application) Are there any guidelines for reducing the memory usage? You're not really telling us much about your data, like how many vertices, textures, etc. Sharing image data might be a good candidate, but it you have millions of triangles then that that gives you a minimum memory footprint. Cheers, /ulrich ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] osg::Sequence boundingsphere
Hi ulrich I guess you are referring to a node visitor when you wrote about TRAVERSE_ACTIVE_CHILDREN. I have inspected the code but could not find this mechanism for computing the bounding sphere: I thought computebound was called sequentially on every children after getbound is called on a node. Thanks Marc-Andre Le 2012-10-17 à 22:20, Ulrich Hertlein u.hertl...@sandbox.de a écrit : Hi Marc-Andre, On 18/10/12 11:30, Marc-André Labrie wrote: Is there a reason why an osg::Sequence does not calculates its boundingsphere based only on its active child (rather than using all of them)? I can define my own Sequence and override the getBounds() method; but I want to know why it is not the default behavior. From the source it looks like manually setting the traversal mode to TRAVERSE_ACTIVE_CHILDREN would do the trick. But it does feel like a better default IMO. Cheers, /ulrich ___ 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
