[osg-users] How can I get the bounding box of an imported model?
Hi, I need to place the imported model of a table on the floor of my virtual room. Since the table is longer and wider than high, the related boundingSphere radius is really imprecise and i can't place it correctly (i use also bullet for physics). Is it possible to get the bounding box of an object in any way? Since i need to decorate the room with many objects, this can result difficult only with the boundingSphere. Thank you! Cheers, Axel -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=35188#35188 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] [build] Cannot load models
Hi, I've been trying to load models using the osg::PositionAttitudeTransform class, since it has no constructors I have to make my own, but when I tried , a error message was displayed there is no base class. Can anyone help me how to load a simple 3ds model with animations? Thank you! Norton -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=35187#35187 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] OpenSceneGraph Demos, Shadowing
Hi, I was evaluating OpenSceneGraph, so I tried downloading some demos. I downloaded openscenegraph-examples-2.8.2-win32-x86-vc90-Release.zip from [ URL REMOVED because the forums won't let me post a URL ] but none of the examples work because they're missing the dlls. So, I downloaded openscenegraph-all-2.8.2-win32-x86-vc90-Release(2).zip from the same URL and figured out that I needed to copy the dlls from a different directory into the same directory as the exes. Many of the examples don't work because they require command line arguments. I specifically wanted to look at shadowing, so I ran the osgshadow.exe application. The output looks like this: img5.imageshack.us / img5 / 6517 / osgshadow1.png Or this: img526.imageshack.us / img526 / 84 / osgshadow2.png (Oops. The forums won't let me post images or URLs yet.) I don't know if this is because my graphics card isn't advanced enough (it's a low-end graphics card in a laptop). It also looks like its trying to display a texture that's filled with random noise. It also looks different each time I run it, and it changes from frame to frame. Is there a texture file missing that didn't come with the zip? So, I guess this post has two purposes: to suggest a better demo system so people can see the technology (or maybe I'm downloading the wrong files?) and to figure out why shadowing isn't working. Thank you! Cheers, Brit -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=35107#35107 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] How can I get the bounding box of an imported model?
Axel Spirtaat writes: Hi, I need to place the imported model of a table on the floor of my virtual room. Since the table is longer and wider than high, the related boundingSphere radius is really imprecise and i can't place it correctly (i use also bullet for physics). Is it possible to get the bounding box of an object in any way? Since i need to decorate the room with many objects, this can result difficult only with the boundingSphere. Use a Node Visitor to reach the available geodes in the model. Every geode can be asked for its bounding box. -- Alberto ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] LOD::setRange crash
2010/12/26, issam boughanmi amigof...@gmail.com:
Hi,
using delta3d 2.4 +osg 2.8.2
i have a pagedlod terrain built with vpb 0.9.10 (i think) and some other
objects in my scene
i have a crash in my application
after switching to the debug mode the crash occur in this line
Code:
void LOD::setRange(unsigned int childNo, float min,float max)
{
if (childNo=_rangeList.size())
_rangeList.resize(childNo+1,MinMaxPair(min,min));
_rangeList[childNo].first=min;
_rangeList[childNo].second=max;
}
of the lod.cpp file
this happen when i load the pagedlod terrain
what this mean ?
before my application was unstable and i had crash sometime but now i have
the crash every application load
any help is welcome
--
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http://forum.openscenegraph.org/viewtopic.php?p=35167#35167
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Re: [osg-users] How can I get the bounding box of an imported model?
Try osg::ComputeBoundsVisitor. Glenn Waldron : Pelican Mapping : +1.703.652.4791 On Tue, Dec 28, 2010 at 4:03 AM, Axel Spirtaat loginv...@gmail.com wrote: Hi, I need to place the imported model of a table on the floor of my virtual room. Since the table is longer and wider than high, the related boundingSphere radius is really imprecise and i can't place it correctly (i use also bullet for physics). Is it possible to get the bounding box of an object in any way? Since i need to decorate the room with many objects, this can result difficult only with the boundingSphere. Thank you! Cheers, Axel -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=35188#35188 ___ 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] StandardShadowMap effect
Hi Wojtek Lewandowski, Thanks for your help. I tried using ShadowMap and the effect is the same. How do I check if my model is using texture coordinates on the same stage as shadow map (1 by default)? I tried using ShadowTexture and the effect is okay. But it seems that of all Shadow effects, only Shadow Texture seems to work on my machine. I am using ATI Mobility Radeon HD 4330. Is that an issue? Thank you! Cheers, Linda -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=35191#35191 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] StandardShadowMap effect
Hi Linda, I tried using ShadowMap and the effect is the same. How do I check if my model is using texture coordinates on the same stage as shadow map (1 by default)? I tried using ShadowTexture and the effect is okay. Does osgshadow example look correct (using shadow map and default scene with rotating shapes) ? Does it look correct when you load different model. ? If they do, then your model could be the cause. Try converting your model to .osg format with osgconv utility. Then load produced .osg file into text editor and look for 'textureUnit 1' sections. If you find one then it means your model does use the same stage as shadow map. But it seems that of all Shadow effects, only Shadow Texture seems to work on my machine. I am using ATI Mobility Radeon HD 4330. Is that an issue? That could be the reason. Older ATI drivers were flipping shadow map texture. Install most recent Catalyst drivers you can find. I have old Radeon X1250 in my laptop. Last Catalyst available for this board are rev 10.2. And they seem to work correctly with shadow maps, but earlier revisions were a disaster. I am sure you will find fresher release than 10.2 for your board. Cheers, Wojtek ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] [vpb] geographic to geocentric coordinate transformation
Deniz, If you're using osgdem with the --geocentric flag set, you're building a geocentric database which is correct. Here's a code snippet that may help you position your camera on the spheroid in geocentric space. It sets the view matrix for the camera given the lat, lon and alt. Roll, pitch, and yaw are zero in this example which means you will be flying level looking north. osg::Matrixd vm; ellipsoid-computeLocalToWorldTransformFromLatLongHeight(osg::DegreesToRadia ns(lat), osg::DegreesToRadians(lon), alt, vm); vm.invert(vm); osg::Matrixd rotation2YUp; rotation2YUp.makeRotate(-M_PI_2, osg::Vec3f(1.0, 0.0, 0.0)); vm *= rotation2YUp; view-getCamera()-setViewMatrix(vm); Hope this helps... -Shayne -Original Message- From: osg-users-boun...@lists.openscenegraph.org [mailto:osg-users-boun...@lists.openscenegraph.org] On Behalf Of deniz diktas Sent: Monday, December 27, 2010 3:35 PM To: osg-users@lists.openscenegraph.org Subject: [osg-users] [vpb] geographic to geocentric coordinate transformation Hi, I am using osgdem to generate a terrain from a set of dted-files in geocentric coordinates. What I am trying to do next is to navigate the camera along a path given in geographic coordinates (lat, long, alt). However, when I try to convert a geographic coordinate (of which I am sure from where the terrain is visible) to geocentric coordinates, and place my camera there I do not get to see anything. I transform the coordinates using osg:EllipsoidModel. I also realized that I am getting weird output results from the Ellipsoid transformation: when I construct a bounding sphere bounding the whole terrain (built in geocentric coord-sys) and test a point at the center of the terrain (converted from geographic to geocentric coordinates) to see if it is included in this bonding sphere, it turns out that this point in geocentric coordinates is not included inside this bounding sphere - which is a contradiction. am I missing something when performing the transformation from geographic to geocentric coordinates? are there other transformations I have to incorporate into my calculation? or am I building my terrain database with the wrong parameters ? I use --geocentric option and I pass the root directory of all dted files. I use osg-version 2.9.5 and virtual-planet-builder-v11. any help is greatly appreciated.. Thank you! Cheers, deniz -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=35183#35183 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org smime.p7s Description: S/MIME cryptographic signature ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] Shadows in large Urban area
Dear all, I am new to OSG and is thinking of implementing shadows in a large urban area with lots of buildings. Could anyone tell me if this is feasible and what shadow tecnique should I used? Or should I try to implement a customized shadow algorithm? Would computation performance be an issue? Any suggestions and advices would be most welcome. Thank you! Cheers, Linda -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=35195#35195 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] StandardShadowMap effect
Hi Wojtek Lewandowski, I tried using cow.osg and have similar problem. I tried download the driver from AMD website but the latest version they have is 10.12 and it seems to keep crashing after installed. Do you think there is any work around using the ATI card like change the mapping method for the shadow texture? Or should I keep to find another device or simply abandon this machine? Thank you! Cheers, Linda -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=35196#35196 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] [vpb] geographic to geocentric coordinate transformation
Hi Shayne, thank you for your reply. but the problem I am facing is related to the transformation. But I will keep your suggestion in mind when placing the camera, so thanks again :) The input to the application will be a flight-path given as a list of consecutive points in geographic coordinates which have to be transformed to geocentric coordinates (I also have orientation information of the airplane) but somehow the ellipsoid model fails to do it appropriately. I found another tool that transforms the coordinates correctly and I could see the terrain: so the problem seems to be solved for now. But I cannot see how why osgdem transforms it correctly but the ellipsoid model fails to do it. So I still would be glad if someone could tell me what the problem is.. deniz -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=35197#35197 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] [vpb] geographic to geocentric coordinatetransformation
Deniz, Which method in EllipsoidModel were you using to do the transform from (lat,lon,alt) to (X,Y,Z)? Can you provide a code snippet on how you're doing the transform? Also provide the actual osgdem command you're using to build your database... -Shayne -Original Message- From: osg-users-boun...@lists.openscenegraph.org [mailto:osg-users-boun...@lists.openscenegraph.org] On Behalf Of deniz diktas Sent: Tuesday, December 28, 2010 1:10 PM To: osg-users@lists.openscenegraph.org Subject: Re: [osg-users] [vpb] geographic to geocentric coordinatetransformation Hi Shayne, thank you for your reply. but the problem I am facing is related to the transformation. But I will keep your suggestion in mind when placing the camera, so thanks again :) The input to the application will be a flight-path given as a list of consecutive points in geographic coordinates which have to be transformed to geocentric coordinates (I also have orientation information of the airplane) but somehow the ellipsoid model fails to do it appropriately. I found another tool that transforms the coordinates correctly and I could see the terrain: so the problem seems to be solved for now. But I cannot see how why osgdem transforms it correctly but the ellipsoid model fails to do it. So I still would be glad if someone could tell me what the problem is.. deniz -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=35197#35197 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org smime.p7s Description: S/MIME cryptographic signature ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] [vpb] geographic to geocentric coordinate transformation
I am using osg::EllipsoidModel::convertLatLongHeightToXYZ() method to convert the coordinates as such: osg:::EllipsoidModel em; em.convertLatLongHeightToXYZ(_lat,_long,_alt, x,y,z); when building the model I used osgdem with the following parameters: osgdem --geocentric -d dted_dir -o terrain.ive dted_dir contains dted files in a certain directory structure defined in dted-standard. I checked the validty of the dted with a commercial software, the geographic ranges are consistent with osgdem without --geocentric parameter (I looked at the contents of the height field of the first subtile: lod=0) so there is no problem with the input file, I am sure of that. -deniz -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=35199#35199 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] StandardShadowMap effect
Hi Linda, I tried using cow.osg and have similar problem. I tried download the driver from AMD website but the latest version they have is 10.12 and it seems to keep crashing after installed. Do you think there is any work around using the ATI card like change the mapping method for the shadow texture? Or should I keep to find another device or simply abandon this machine? Does osgshadow (without command line params ) crash ? If it does you may check if --SingleThreaded --window 10 10 800 600 options help. They do sometimes. You may also try looking at earlier driver versions. I would check 10.8 and/or 10.9. I believe that with 10.9 or 10.10 ATI introduced OpenGL 4.0 support and this was a chance to break some stuff if it was not broken yet. We still mainly use NVidia cards for OpenGL development and occasionaly switch to ATI to check if the code works there. AMD/ATI improved their OpenGL drivers recently but its clearly still not the same quality as on NVidia. Cheers, Wojtek ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] [vpb] geographic to geocentric coordinatetransformation
A couple more questions... 1) Are your lat, lon in radians when you call convertLatLongHeightToXYZ? 2) Have you tried viewing your database (terrain.ive) with osgviewer to see what it looks like (osgviewer terrain.ive)? If you can't see your database with osgviewer, then there's a problem with your database. I use the exact same methods and my stuff works fine for viewing the terrain given a lat,lon,alt with a geocentric database. As for osgdem, the only difference is that I'm using a pagedLOD database and I'm using osgTerrain... Here's the osgdem command I use... osgdem --TERRAIN -PagedLOD --geocentric --whole-globe -t wholeearthtexture -t texturedir -d elevationdir -l 24 -o geodatabase.ive -Shayne -Original Message- From: osg-users-boun...@lists.openscenegraph.org [mailto:osg-users-boun...@lists.openscenegraph.org] On Behalf Of deniz diktas Sent: Tuesday, December 28, 2010 2:18 PM To: osg-users@lists.openscenegraph.org Subject: Re: [osg-users] [vpb] geographic to geocentric coordinatetransformation I am using osg::EllipsoidModel::convertLatLongHeightToXYZ() method to convert the coordinates as such: osg:::EllipsoidModel em; em.convertLatLongHeightToXYZ(_lat,_long,_alt, x,y,z); when building the model I used osgdem with the following parameters: osgdem --geocentric -d dted_dir -o terrain.ive dted_dir contains dted files in a certain directory structure defined in dted-standard. I checked the validty of the dted with a commercial software, the geographic ranges are consistent with osgdem without --geocentric parameter (I looked at the contents of the height field of the first subtile: lod=0) so there is no problem with the input file, I am sure of that. -deniz -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=35199#35199 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org smime.p7s Description: S/MIME cryptographic signature ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] [build] Cannot load models
Hi, you can't use the PAT for loading. You could instantiate a PAT node, then use the static load function of osgDB to load the model and add the loaded model than as a child to the PAT. Add finally the PAT to the viewer. Now you should be able to display the model and influence its PAT. Cheers, Torben -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=35202#35202 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] [vpb] geographic to geocentric coordinate transformation
1) oops.. you are right! I am not passing them in radians :-* ok I feel a little embarassed as of why I could not think of that :x I guess because I always tend to think in terms of opengl logic: in opengl you pass angles in degrees. 2) I have been able to see the terrain in osgviewer so no problem there.. Thank you so much Shayne, help greatly appreciated :) best wishes! deniz -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=35203#35203 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] [vpb] geographic to geocentric coordinatetransformation
I'm glad things are working for you... -Shayne -Original Message- From: osg-users-boun...@lists.openscenegraph.org [mailto:osg-users-boun...@lists.openscenegraph.org] On Behalf Of deniz diktas Sent: Tuesday, December 28, 2010 4:25 PM To: osg-users@lists.openscenegraph.org Subject: Re: [osg-users] [vpb] geographic to geocentric coordinatetransformation 1) oops.. you are right! I am not passing them in radians :-* ok I feel a little embarassed as of why I could not think of that :x I guess because I always tend to think in terms of opengl logic: in opengl you pass angles in degrees. 2) I have been able to see the terrain in osgviewer so no problem there.. Thank you so much Shayne, help greatly appreciated :) best wishes! deniz -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=35203#35203 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org smime.p7s Description: S/MIME cryptographic signature ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Shadows in large Urban area
Hi Linda, For such cases we have 2 reasonable shadow tecs: - Light Space Shadow Maps - Parallel Splited Shadow Maps did you tried out this both with osgShadow.exe -pssm or with osgShadow -lispsm ... Adrian 2010/12/28 Linda Lee zenith...@hotmail.com: Dear all, I am new to OSG and is thinking of implementing shadows in a large urban area with lots of buildings. Could anyone tell me if this is feasible and what shadow tecnique should I used? Or should I try to implement a customized shadow algorithm? Would computation performance be an issue? Any suggestions and advices would be most welcome. Thank you! Cheers, Linda -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=35195#35195 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org -- Adrian Egli ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
