[osg-users] Issue with shadow
Hi All, I have a scene in which a node is [b]moving over a terrain[/b] at a certain height. I also have a light source in the scene. The node correctly casts shadow on the terrain. Also the parts of node like its limbs/appendages show shadow on the central body of the node as expected. However, I observe that the node shows a glittering appearance i.e the parts of the node looks sometimes dark and sometimes its bright as the node moves in the scene. (see the attached two snapshots of the face ). The position of the light source is fixed. Any clues on what could be the cause(s) of such a behavior? Anything else I need to set in the shadow map? How to solve this issue? I have only the terrain, node and a light source in the scene graph. ... Thank you! Cheers, Suraj -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=68623#68623 Attachments: http://forum.openscenegraph.org//files/instantb_159.png http://forum.openscenegraph.org//files/instanta_731.png ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Can't update my projection matrix amnually
On 15 September 2016 at 17:19, Bruno Oliveira wrote: > I see. That means I need to manually keep updating my near/far plane. NO. If you want the OSG to use your projection matrices then you simply need to switch off the automatic compute of the near/matrix as I have already told you how to do. That't it end of story. I can't help you anymore as I've already given you the answer you need you just need to use it. Simple. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Can't update my projection matrix amnually
I see. That means I need to manually keep updating my near/far plane. Is there no other way? - Can I manually trigger a culling traversal? - I know the delta in z in which I am moving my camera. Can I calculate the new near and far planes the traversal will assign after the traversal? Example: newFarValue = oldFarValue + deltaZ - Is the near/far plane update code centralized in some public function that I can somehow use? If not, could you please tell me where this code is so that I can reproduce it? > On 15 Sep 2016, at 17:09, Robert Osfield wrote: > > On 15 September 2016 at 16:57, Bruno Oliveira > wrote: >> Hello, >> >> I just verified and it is indeed related to near and far planes. >> I am zooming my camera, and therefore, somewhere along the OSG update loops, >> the near and far planes will change but I don’t know what the new value is >> going to be. >> >> I need to reproduce that in my code, as in: >> camera->setViewMatrix(getInverseMatrix()); camera->setProjectionMatrixAsPerspective(...); >> >> >> Can I somehow trigger the near/far plane recalculation? > > You can't manually force a compute of the near/far planes, it happens > as part of the cull traversal as this is where the OSG can determine > what objects are in the view frustum and hence what values would be > appropriate to clamp the near and far planes so all objects are > visible. > > If you don't want this computation simple switch it off as per my > previous email. > > Robert. > ___ > 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] Can't update my projection matrix amnually
On 15 September 2016 at 16:57, Bruno Oliveira wrote: > Hello, > > I just verified and it is indeed related to near and far planes. > I am zooming my camera, and therefore, somewhere along the OSG update loops, > the near and far planes will change but I don’t know what the new value is > going to be. > > I need to reproduce that in my code, as in: > >>> camera->setViewMatrix(getInverseMatrix()); >>> camera->setProjectionMatrixAsPerspective(...); > > > Can I somehow trigger the near/far plane recalculation? You can't manually force a compute of the near/far planes, it happens as part of the cull traversal as this is where the OSG can determine what objects are in the view frustum and hence what values would be appropriate to clamp the near and far planes so all objects are visible. If you don't want this computation simple switch it off as per my previous email. Robert. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Can't update my projection matrix amnually
Hello, I just verified and it is indeed related to near and far planes. I am zooming my camera, and therefore, somewhere along the OSG update loops, the near and far planes will change but I don’t know what the new value is going to be. I need to reproduce that in my code, as in: >> camera->setViewMatrix(getInverseMatrix()); >> camera->setProjectionMatrixAsPerspective(...); Can I somehow trigger the near/far plane recalculation? > On 15 Sep 2016, at 16:49, Robert Osfield wrote: > > Hi Bruno, > > There a few two many unknowns for us to know what is going on. So we > can only guess. > > Could it be that the OSG's default clamping of the near/far values to > fit with the bounds of the scene in the view frustum is what is > adjusting the projection matrix? > > Try setting the ComputeFarMode to DO_NOT_COMPUTE_NEAR_FAR via > > > viewer.getCamera()->setComputeFarMode(osg::CullSetting::DO_NOT_COMPUTE_NEAR_FAR); > > Then see what happens. > > Robert. > > On 15 September 2016 at 16:18, Bruno Oliveira > wrote: >> Hello, >> >> >> I am trying to set my view and projection camera matrix. I do this inside a >> custom camera manipulator code I am building. >> >> I set the camera view matrix as >> >> camera->setViewMatrix(getInverseMatrix()); >> >> After this, since I am using a perspective projection matrix, I know I need >> to update my projection matrix. I try to do this with >> >> camera->setProjectionMatrixAsPerspective(30.f, aspectRatio, 0.5f, 500.f); >> >> This results in the following projection matrix, >> >>2.69691 0 0 0 >> >>0 3.73205 0 0 >> >>0 0 -1.002 -1 >> >>0 0 -1.001 0 >> >> >> However this is wrong, my matrix should be something similar to >> >>2.69691 0 0 0 >> >>0 3.73205 0 0 >> >>0 0 -50 -1 >> >>0 0 -1.01309e+06 0 >> >> >> What am I doing wrong? What else do I need to correctly compute the >> projection matrix? >> >> ___ >> 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 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Can't update my projection matrix amnually
Hi Bruno, There a few two many unknowns for us to know what is going on. So we can only guess. Could it be that the OSG's default clamping of the near/far values to fit with the bounds of the scene in the view frustum is what is adjusting the projection matrix? Try setting the ComputeFarMode to DO_NOT_COMPUTE_NEAR_FAR via viewer.getCamera()->setComputeFarMode(osg::CullSetting::DO_NOT_COMPUTE_NEAR_FAR); Then see what happens. Robert. On 15 September 2016 at 16:18, Bruno Oliveira wrote: > Hello, > > > I am trying to set my view and projection camera matrix. I do this inside a > custom camera manipulator code I am building. > > I set the camera view matrix as > > camera->setViewMatrix(getInverseMatrix()); > > After this, since I am using a perspective projection matrix, I know I need > to update my projection matrix. I try to do this with > > camera->setProjectionMatrixAsPerspective(30.f, aspectRatio, 0.5f, 500.f); > > This results in the following projection matrix, > > 2.69691 0 0 0 > > 0 3.73205 0 0 > > 0 0 -1.002 -1 > > 0 0 -1.001 0 > > > However this is wrong, my matrix should be something similar to > > 2.69691 0 0 0 > > 0 3.73205 0 0 > > 0 0 -50 -1 > > 0 0 -1.01309e+06 0 > > > What am I doing wrong? What else do I need to correctly compute the > projection matrix? > > ___ > 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
[osg-users] Can't update my projection matrix amnually
Hello, I am trying to set my view and projection camera matrix. I do this inside a custom camera manipulator code I am building. I set the camera view matrix as camera->setViewMatrix(getInverseMatrix()); After this, since I am using a perspective projection matrix, I know I need to update my projection matrix. I try to do this with camera->setProjectionMatrixAsPerspective(30.f, aspectRatio, 0.5f, 500.f); This results in the following projection matrix, 2.69691 0 0 0 0 3.73205 0 0 0 0 -1.002 -1 0 0 -1.001 0 However this is wrong, my matrix should be something similar to 2.69691 0 0 0 0 3.73205 0 0 0 0 -50 -1 0 0 -1.01309e+06 0 What am I doing wrong? What else do I need to correctly compute the projection matrix? ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Feedback/guidance sought on move of osgQt out into it's own project/repository
Hi, Here is my attempt to help. Here is a command that I have put together that seems to be accomplishing the task. from 14240 commits to 1204. Code: git filter-branch \ --prune-empty \ --index-filter ' git ls-tree -z -r --name-only --full-tree $GIT_COMMIT \ | grep -z -v "^AUTHORS.txt" \ | grep -z -v "^ChangeLog" \ | grep -z -v "^CMakeLists.txt" \ | grep -z -v "^CTestConfig.cmake" \ | grep -z -v "^LICENSE.txt" \ | grep -z -v "^NEWS.txt" \ | grep -z -v "^README.md" \ | grep -z -v "^CMakeModules/cmake_uninstall.cmake.in" \ | grep -z -v "^CMakeModules/ListHandle.cmake" \ | grep -z -v "^CMakeModules/ModuleInstall.cmake" \ | grep -z -v "^CMakeModules/OsgCPack.cmake" \ | grep -z -v "^CMakeModules/OsgCPackConfig.cmake.in" \ | grep -z -v "^CMakeModules/OsgDetermineCompiler.cmake" \ | grep -z -v "^CMakeModules/OsgMacroUtils.cmake" \ | grep -z -v "^CMakeModules/UtilityMacros.cmake" \ | grep -z -v "^doc/Doxyfiles/all_Doxyfile" \ | grep -z -v "^doc/Doxyfiles/auto_Doxyfile" \ | grep -z -v "^doc/Doxyfiles/auto_Mainpage" \ | grep -z -v "^doc/Doxyfiles/core_Doxyfile" \ | grep -z -v "^doc/Doxyfiles/custom_Footer.html" \ | grep -z -v "^doc/Doxyfiles/doxyfile.cmake" \ | grep -z -v "^examples/CMakeLists.txt" \ | grep -z -v "^examples/osgqfont" \ | grep -z -v "^examples/osgQtBrowser" \ | grep -z -v "^examples/osgQtWidgets" \ | grep -z -v "^examples/osgviewerQt" \ | grep -z -v "^include/osgQt" \ | grep -z -v "^packaging/pkgconfig/openscenegraph-osgQt.pc.in" \ | grep -z -v "^PlatformSpecifics" \ | grep -z -v "^src/CMakeLists.txt" \ | grep -z -v "^src/osgQt" \ | grep -z -v "^src/osgPlugins/CMakeLists.txt" \ | grep -z -v "^src/osgPlugins/qfont" \ | xargs -0 -r git rm --cached -r ' \ -- \ --all I ran this with the HEAD reset back to '489860f Updated version number to 3.5.5' and used Roberts cleanup commit as a reference. I pushed the results to 'github blobfish osgQtCleaned01'. If you want to try this command, note that it works on all branches in the repo. You might want to clone a copy of your repo to experiment with. Keeping only relevant history on individual files (like CMakeLists.txt) will be more problematic. Thank you! Cheers, tom[/code] -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=68610#68610 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Please send me GEOS static and dynamic libraries based on 64bit Windows
Hi everyone, I'm new in the forum and I found OSG because I'm looking for GEOS library for Android. I don't understand if GEOS is or isn't a dependency because I could find it in download-section/dependencies, the 3er Party libraries link is broken :/ My question is: has someone the GEOS library compiled for Android armeabi v7 and can share it with me? Thank you! Cheers, Fernando -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=68616#68616 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] Perspective Projection updateCamera does not work anymore
Hello, I have a scene and I am using a Perspective Projection. I was using a Ortho projection before. Now, I am creating a new camera manipulator, in which I need to update the camera zoom, and update the camera in that precise moment, in order to check my scene for intersections of a ray from the mouse (in a way similar to setCenterByMousePointerIntersection) . In Ortho mode, I used camera->setViewMatrix(getInverseMatrix()); But this does not work in Perspective projection mode? I get successful scene intersections before I set the Camera's view matrix, but after that line of code, intersecting Is this the problem? ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: invalid use of incomplete type ‘std::ifstream in readNodeFile
Hi Mike I'm using it on Linux not Windows but thank you anyway! ... Thank you! Cheers, kyungsoo -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=68614#68614 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
