Re: [osg-users] [build] Compile error today
Hi Emmanuel, On Sat, Oct 31, 2009 at 6:15 PM, BARANGER Emmanuel embaran...@free.fr wrote: No problem :) We must make mistakes sometimes. Otherwise life would be sad Hum... Updated SVN and.. http://pastebin.ca/1650694 I'm sorry I looks like your check out didn't update correctly to the the latest revision. Could you try an svn update again. Make sure the GraphicsWindowX11.cpp is updated. Robert. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] [build] Compile error today
Hi, This Sunday morning I made a new update and this time it, yippee, the compilation is going to end. Bravo for the quick response and a big thank you to you. I can go back to my planes:) Thank you! Cheers, BARANGER Some aircraft for FlightGear http://helijah.free.fr -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=18992#18992 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] OSG uniforms in GLSL shaders
Hi, how can i use the uniform osg_ViewMatrixInverse in my shaders? My shader compiles fine, but it seems i have the view inverse matrix wrong. I'm not sure if OSG is initializing this uniform for me at runtime. In fact, i don't know exactly what i have to take into account to use it. Can anyone give me some hints regarding its (recommended) use? Thanks and best regards, Himar. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] osgManipulator error bug? in removeTransformUpdating
Hi,
iam using the trunk of OSG
i ve a simple code snipped
a Group with a dragger and two transformmatrix objects
and their childs
there is no problem to call the method
pDragger-addTransformUpdating( pTransformBrick1 );
pDragger-addTransformUpdating( pTransformBrick2 );
but when i call the methods
pDragger-removeTransformUpdating( pTransformBrick1 );
pDragger-removeTransformUpdating( pTransformBrick2 );
the code crashes with Expression: (This-_has_container(),0)
in dragger.cpp line 204
Code:
void Dragger::removeTransformUpdating(osg::MatrixTransform* transform)
{
for(Dragger::DraggerCallbacks::iterator itr = _draggerCallbacks.begin();
itr != _draggerCallbacks.end();
++itr)
here is my test programm
Code:
int main( int argc, char **argv )
{
osgViewer::Viewer viewer;
osg::ref_ptrosg::Group pRoot = new osg::Group;
osg::ref_ptrosg::Node pBrick1 = osgDB::readNodeFile(
D:\\bricks\\obj\\3001.obj );
osg::ref_ptrosg::Node pBrick2 = osgDB::readNodeFile(
D:\\bricks\\obj\\3005.obj );
osg::MatrixTransform* pTransformBrick1 = new osg::MatrixTransform;
pTransformBrick1-addChild( pBrick1 );
osg::MatrixTransform* pTransformBrick2 = new osg::MatrixTransform;
pTransformBrick2-addChild( pBrick2 );
osgManipulator::Dragger* pDragger = 0;
osg::ref_ptrosgManipulator::TabBoxDragger pTabBoxDragger = new
osgManipulator::TabBoxDragger();
pTabBoxDragger-setupDefaultGeometry();
pDragger = pTabBoxDragger;
pRoot-addChild(pTransformBrick1);
pRoot-addChild(pTransformBrick2);
pRoot-addChild( pDragger );
float scale = pBrick1-getBound().radius() * 1.6;
pDragger-setMatrix(osg::Matrix::scale( scale, scale, scale ) *
osg::Matrix::translate( pBrick1-getBound().center() )
);
pDragger-addTransformUpdating( pTransformBrick1 );
pDragger-addTransformUpdating( pTransformBrick2 );
pDragger-removeTransformUpdating( pTransformBrick1 );
pDragger-removeTransformUpdating( pTransformBrick2 );
pDragger-setHandleEvents(true);
osgUtil::Optimizer optimizer;
optimizer.optimize( pRoot.get() );
viewer.setSceneData( pRoot.get() );
return viewer.run();
}
Why doesnt it work?
Is there another way to activate and deactivate the dragger to the nodes?
Thank you!
Cheers,
Matthias
--
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http://forum.openscenegraph.org/viewtopic.php?p=18996#18996
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[osg-users] Textures and Images
Hi, I have a question about osg::Textures. In my program I load an IVE file with embedded textures. Once it is loaded, I traverse the subgraph with a custom visitor which inspects each osg::StateSet. I find osg::Textures within these statesets, and I want to get the filenames for the images the textures are using. I thought I had this working as a bunch of test models loaded and were analysed correctly. However, for some models, the textures are found, but if I call getImage(n) on the texture, NULL is returned. The texture looks fine in the viewer, so I know the image data has been loaded at some point. Shouldn't an osg::Texture loaded from an image file always have a valid osg::Image you can access? Why would this work for some models and not others? Is it a difference in the loaders for different image formats? Cheers, Julian -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=18997#18997 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] PagedLOD experts?
I'm just wondering -- other than myself, are there any others (excluding Robert, obviously) who have delved into the code for PagedLOD and DatabasePager and actually done any coding in there? -- 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
[osg-users] [osgPlugins] collada export
Hi all, I was trying to find a way to export my model created with OSG so that I can play with it in Blender. The only solution at the moment seems the Collada plugin. So I compiled collada-dom 2.2, then I tried 2.1, and I even found some Ubuntu pre-compiled collada-dom/libminizip installers, and then I recompiled OSG 2.8.2 in turn with each of these versions of collada-dom. Results with all of them is that I can open .dae files with osgviewer, which makes me believe that the plugin is installed and working correctly. However if I add osgDB::writeNodeFile( *root, file.osg ) to the code that generates my model, this results in the complete model which i can then view with osgviewer; if I add osgDB::writeNodeFile( *root, file.dae ) the resulting .dae file is very small (few kBytes, against the 3 or 4 Mbytes of the .osg file) and when I open it with osgviewer, there is nothing there. Am I missing something obvious here? Same happens if i try to convert the .osg file to .dae using os gconv. Would there be anyone so kind to use a working version of osgconv on a .osg file in order to convert it to .dae for me? It would be very much appreciated Thank you! Cheers, Maurizio -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=18999#18999 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] PagedLOD experts?
Chris, i dont know any, but since you are one of those few elite members of the OSG community :-) Maybe you can help me understand what is going on: http://forum.openscenegraph.org/viewtopic.php?t=3782 Thanks! Sergey Chris 'Xenon' Hanson wrote: I'm just wondering -- other than myself, are there any others (excluding Robert, obviously) who have delved into the code for PagedLOD and DatabasePager and actually done any coding in there? -- 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 http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org -- Post generated by Mail2Forum -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=19000#19000 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] PagedLOD experts?
Hi Chris, I had done a series of tutorials a few months ago named The longest frame, which discussed the implementation of DatabasePager, DataThread and PagedLOD (You may find it at osgchina.org, in CHINESE). That is to say, I've studied into the code, too, even though I'm not expert. :) Wang Rui 2009/11/2 Chris 'Xenon' Hanson xe...@alphapixel.com I'm just wondering -- other than myself, are there any others (excluding Robert, obviously) who have delved into the code for PagedLOD and DatabasePager and actually done any coding in there? -- 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 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] PagedLOD experts?
Like Wang Rui, I have studied the code to help investigate issues with client databases. But I haven't done any coding there. I'm familiar with the environment variables that control its behavior, what operations are done at what phase of the frame, and am aware of how the PagedLOD class differs significantly from its base class. In the vast majority of my current work, I'm not using the DatabasePager or PagedLOD classes at all, so am probably a bit rusty on the current code base. 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] LineSegmentIntersector and alpha-blended polygons
Hi,
I finally found another post that gets pretty close to what I wanted, but did
not work right out of the box (see
http://lists.openscenegraph.org/pipermail/osg-users-openscenegraph.org/2009-January/021653.html).
I wrote the following function starting from the above post's code and it
seems to work well, at least for my few test models.
Code:
float GetAlphaAtTexCoords(const osgUtil::LineSegmentIntersector::Intersection
*hit)
{
osg::Vec2 tc(0.0f,0.0f);
float alpha = -1.0f;
osg::Drawable* drawable = hit-drawable.get();
osg::Geometry* geometry = drawable ? drawable-asGeometry() : NULL;
osg::Vec3Array* vertices = geometry ?
dynamic_castosg::Vec3Array*(geometry-getVertexArray()) : NULL;
if (vertices)
{
// get the vertex indices.
const osgUtil::LineSegmentIntersector::Intersection::IndexList indices
= hit-indexList;
const osgUtil::LineSegmentIntersector::Intersection::RatioList ratios
= hit-ratioList;
if (3 == ratios.size() 3 == indices.size())
{
osg::Array* texcoords = (geometry-getNumTexCoordArrays()0) ?
geometry-getTexCoordArray(0) : NULL;
osg::Vec2Array* texcoords_Vec2Array =
dynamic_castosg::Vec2Array*(texcoords);
if (texcoords_Vec2Array)
{
osg::Vec2 tc0 = (*texcoords_Vec2Array)[indices[0]];
osg::Vec2 tc1 = (*texcoords_Vec2Array)[indices[1]];
osg::Vec2 tc2 = (*texcoords_Vec2Array)[indices[2]];
tc = tc0 * ratios[0] + tc1 * ratios[1] + tc2 * ratios[2];
}
else
return alpha;
}
else
return alpha;
}
else
return alpha;
osg::TexMat* activeTexMat = NULL;
osg::Texture2D* activeTexture = NULL;
osg::Image* activeImage = NULL;
if (geometry-getStateSet())
{
osg::TexMat* texMat =
dynamic_castosg::TexMat*(geometry-getStateSet()-getTextureAttribute(0,osg::StateAttribute::TEXMAT));
if (texMat)
activeTexMat = texMat;
osg::Texture2D* texture =
dynamic_castosg::Texture2D*(geometry-getStateSet()-getTextureAttribute(0,osg::StateAttribute::TEXTURE));
if (texture)
activeTexture = texture;
else
return alpha;
activeImage = activeTexture-getImage();
}
else if (drawable-getNumParents() 0)
{
// XXX - assumes texture info is at most one level up
for (unsigned int i = 0; i drawable-getNumParents(); ++i)
{
// reset all ptrs just in case
activeTexMat = NULL;
activeTexture = NULL;
activeImage = NULL;
// get the current parent ptr
osg::Node *p = drawable-getParent(i);
if (p-getStateSet())
{
osg::TexMat* texMat =
dynamic_castosg::TexMat*(p-getStateSet()-getTextureAttribute(0,osg::StateAttribute::TEXMAT));
if (texMat)
activeTexMat = texMat;
osg::Texture2D* texture =
dynamic_castosg::Texture2D*(p-getStateSet()-getTextureAttribute(0,osg::StateAttribute::TEXTURE));
if (texture)
activeTexture = texture;
else
continue;
activeImage = activeTexture-getImage();
if (activeImage)
break;// bail from the for loop
}
}
}
if (activeTexMat)
{
osg::Vec4 tc_transformed = osg::Vec4(tc.x(),tc.y(),0.0f,0.0f) *
activeTexMat-getMatrix();
tc.x() = tc_transformed.x();
tc.y() = tc_transformed.y();
}
if (activeImage)
{
// handle s wrapping
switch (activeTexture-getWrap(osg::Texture::WRAP_S))
{
case osg::Texture::CLAMP:
case osg::Texture::CLAMP_TO_BORDER:
case osg::Texture::CLAMP_TO_EDGE:
if (tc.x() 0.0f)
tc.x() = 0.0f;
if (tc.x() 1.0f)
tc.x() = 1.0f;
break;
case osg::Texture::MIRROR:
tc.x() = tc.x() - floor(tc.x());
if ((int)(floor(tc.x())) % 2)
tc.x() = 1.0f - tc.x();
break;
case osg::Texture::REPEAT:
tc.x() = tc.x() - floor(tc.x());
break;
}
// handle t wrapping
switch (activeTexture-getWrap(osg::Texture::WRAP_T))
{
case osg::Texture::CLAMP:
case osg::Texture::CLAMP_TO_BORDER:
case osg::Texture::CLAMP_TO_EDGE:
if (tc.y() 0.0f)
tc.y() = 0.0f;
if (tc.y() 1.0f)
tc.y() = 1.0f;
break;
case osg::Texture::MIRROR:
tc.y() = tc.y() - floor(tc.y());
if ((int)(floor(tc.y())) % 2)
tc.y() = 1.0f - tc.y();
break;
case osg::Texture::REPEAT:
tc.y() = tc.y() - floor(tc.y());
break;
Re: [osg-users] PagedLOD experts?
sergey leontyev wrote: Chris, i dont know any, but since you are one of those few elite members of the OSG community :-) Maybe you can help me understand what is going on: http://forum.openscenegraph.org/viewtopic.php?t=3782 I can't tell you much about TXP paging or multi-camera Database paging. What I can tell you is you need to do some in-situ debugging. You need to compile with debugging and use memory debugging tools to see what sort of objects (what size of allocations) are being allocated. Add code wherever needed to count these allocations, and set breakpoints to see where they're being allocated from. Turn on as much OSG debugging info (OSG Notify level DEBUG_INFO) and watch what spits out. Usually OSG tells you what it's doing in detail if it's loading or allocating stuff. Add more Notify debugging to suspicious code areas if you need to. I could probably help you more with this, but I've got to help my paying client. Thanks! Sergey -- 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] PagedLOD experts?
Chris 'Xenon' Hanson wrote: I'm just wondering -- other than myself, are there any others (excluding Robert, obviously) who have delved into the code for PagedLOD and DatabasePager and actually done any coding in there? I'll throw out an item that I think should be discussed from my recent work: DatabasePager.cpp, capped_removeExpiredSubgraphs() has a line of coding that says: MarkPagedLODsVisitor markerVistor(NeedToRemove); This visitor, when applied, goes through the _inactivePagedLODList, and renames a certain number of the contents to NeedToRemove. Later, if you are NOT using the _deleteRemovedSubgraphsInDatabaseThread option, it removes PagedLOD nodes that have this name. This seems to me to be a dangerous usage of the node name. Granted, it's very unlikely that you'd have a node named NeedToRemove, but it underscores that the practice of assigning special meaning to the node name isn't especially safe. I think it would be wise to clean the node names as the nodes are added to the _inactivePagedLODList so that none of them could ever possibly enter into the list already bearing the name NeedToRemove. What I haven't figured out is if there's ever a situation where a node _leaves_ the inactive list and returns to the active scenegraph without being deleted. In this case, any tampering of the node name would have undesirable results. It does raise another question -- is this a common practice and is there anywhere else in OSG where node name has a special meaning during specific phases of operation? This particular one is not documented anywhere I know of. In this case, the failure mode would be pretty benign -- the DatabasePager could accidentally destroy too many inactive PagedLOD nodes in one frame-idle period. Normally this is constrained by the _targetMaximumNumberOfPageLOD. So, maybe this failure could cause the redraw to break framerate. Nothing fatal. And finally, is there a better extensible way to go about marking arbitrary nodes for later processing (while potentially still in the scenegraph, even though this case has them removed from the scenegraph by this point)? Any fast boolean flag will be immediately overwhelmed because everyone will want to use it and they'll collide. But any extensible method would seem to involve allocating and attaching some sort of dynamic marker, which is not especially efficient. Any thoughts? -- 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] PagedLOD experts?
On 11/01/2009 10:42 PM, Chris 'Xenon' Hanson wrote: I'm just wondering -- other than myself, are there any others (excluding Robert, obviously) who have delved into the code for PagedLOD and DatabasePager and actually done any coding in there? I've stared at the DatabasePager code a lot and made some contributions, but mostly in order to do paging without using PagedLOD. Tim ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] PagedLOD experts?
Hi Chris, 2009/11/2 Chris 'Xenon' Hanson xe...@alphapixel.com This visitor, when applied, goes through the _inactivePagedLODList, and renames a certain number of the contents to NeedToRemove. Later, if you are NOT using the _deleteRemovedSubgraphsInDatabaseThread option, it removes PagedLOD nodes that have this name. Yes, it does. In my opinion, PagedLODs are seldom named NeedToRemove because they are created by VPB automatically, or created by some user-defined LOD generating tools, which may easily avoid this problem. So I just ignore it while coding. But as you say, it is potentially dangerous. It does raise another question -- is this a common practice and is there anywhere else in OSG where node name has a special meaning during specific phases of operation? I think so. There are some other special uses of setName(), setUpdateCallback() and etc. in core osg libraries. For example, osgAnimation::MorphGeometry applies setUpdateCallback() to itself automatically, which may be invalid if a innocent developer set a customized udpate callback to it again. Usage of ImageSequence::UpdateCallback in osg::Texture classes may also have the same trouble. And finally, is there a better extensible way to go about marking arbitrary nodes for later processing (while potentially still in the scenegraph, even though this case has them removed from the scenegraph by this point)? Any fast boolean flag will be immediately overwhelmed because everyone will want to use it and they'll collide. But any extensible method would seem to involve allocating and attaching some sort of dynamic marker, which is not especially efficient. Any thoughts? I don't think OSG can solve all those problems by itself. IMHO, the best way is to write and improve documents and reference manuals, and try to tell these exceptions and notes to developers all over the world: Don't rename unrenamable nodes, and don't disturb self-propelled objects. :D Wang Rui ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] how to use pfd_draw_to_bitmap mode in GraphicsWindowWin32?
Hi all, I meet some problems when using pfd_draw_to_window, so I want to try pfd_draw_to_bitmap. BUT, I found that there is no way to change the pixel format to pfd_draw_to_bitmap instead of the hard code pfd_draw_to_window in GraphicsWindowWin32 class. All initialization function is non-virtual. How to use pfd_draw_to_bitmap mode in GraphicsWindowWin32? Thanks for further help! Cheers, Dibo, -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=19008#19008 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] [osgOcean] Wind speed representation
Hi, I was wondering if there is a connection of wind speed parameter of the ocean surface to real world wind speed. Is it representing m/sec or Km/h or it has some connection with ocean sea state? Thank you! Dimitrios -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=19010#19010 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
