Re: [osg-users] Single-sided ClipPlane?
2009/5/24 Paul Martz pma...@skew-matrix.com: http://www.sstk.co.uk/portalRendering/portal.php Unless I'm missing something, couldn't you do this in OSG using an Occluder (for host-side culling) and the stencil buffer (to control screen rendering)? You don't even need that. Just set up the clip planes properly. Translate the cameras position into the portals coordinate frame, then use each edge of the portal and the camera position to construct a clip plane. This should be easy to do in osg. Just need to know where to put the callback. Course it will all go pear shaped if the stuff though the portal uses clip planes, unless your h/w supports lots of them. But I suspect that might happen even with using the stencil buffer. I think you need to get clever to support multi level portals. ie ones where you can see a portal through a portal. IIRC most games with portal rendering don't support multiple levels. -- http://www.ssTk.co.uk ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Single-sided ClipPlane?
Just to let people know, portals is not quite what im looking for, its more of an extended type portal, i believe a portal is a plane with a texture of a scene applied to give to look of a scene within a scene, im looking for scenes within scenes but with models coming out from the portal front too. -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=12856#12856 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] Cannot find a suitable ZIP program
Hi all, Not much time STOP Wanted to make Win32 MSVC8 binaries for 2.8.1 STOP Had error CPack Error: Cannot find a suitable ZIP program when building Packages targets STOP Solution ? Thanks STOP -- Sukender PVLE - Lightweight cross-platform game engine - http://pvle.sourceforge.net/ ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Single-sided ClipPlane?
2009/5/24 Paul Griffiths gaffe...@gmail.com: Just to let people know, portals is not quite what im looking for, its more of an extended type portal, i believe a portal is a plane with a texture of a scene applied to give to look of a scene within a scene, im looking for scenes within scenes but with models coming out from the portal front too. portals don't use textures. it's just clip planes, though you will need to clear the depth buffer within the portal. if you want the model sticking out the front you'll have to have another instance of it, with the in portal side clipped off. -- http://www.ssTk.co.uk ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Cannot find a suitable ZIP program
Hi Sukender, On Sun, May 24, 2009 at 12:16 PM, Sukender suky0...@free.fr wrote: Hi all, Not much time STOP Wanted to make Win32 MSVC8 binaries for 2.8.1 STOP Had error CPack Error: Cannot find a suitable ZIP program when building Packages targets STOP Solution ? Thanks STOP Last time I looked Cmake could use winzip or 7-zip. CMake tries to locate these in %ProgramFiles%. See CPackZIP.cmake script in your cmake distribution. More info at: http://www.openscenegraph.org/projects/osg/wiki/Community/Packaging cheers Mattias -- Sukender PVLE - Lightweight cross-platform game engine - http://pvle.sourceforge.net/ ___ 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] Cannot find a suitable ZIP program
Hi Mattias, I have installed 7Zip in a non standard path. I modified CPackZIP.cmake. Thanks for the tip. I'll upload binaries ASAP. Sukender PVLE - Lightweight cross-platform game engine - http://pvle.sourceforge.net/ Le Sun, 24 May 2009 15:34:44 +0200, Mattias Helsing helsin...@gmail.com a écrit: Hi Sukender, On Sun, May 24, 2009 at 12:16 PM, Sukender suky0...@free.fr wrote: Hi all, Not much time STOP Wanted to make Win32 MSVC8 binaries for 2.8.1 STOP Had error CPack Error: Cannot find a suitable ZIP program when building Packages targets STOP Solution ? Thanks STOP Last time I looked Cmake could use winzip or 7-zip. CMake tries to locate these in %ProgramFiles%. See CPackZIP.cmake script in your cmake distribution. More info at: http://www.openscenegraph.org/projects/osg/wiki/Community/Packaging cheers Mattias -- Sukender PVLE - Lightweight cross-platform game engine - http://pvle.sourceforge.net/ ___ 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] Cannot find a suitable ZIP program
Hi Mattias, I have installed 7Zip in a non standard path. I modified CPackZIP.cmake. Thanks for the tip. I'll upload binaries ASAP. Sukender PVLE - Lightweight cross-platform game engine - http://pvle.sourceforge.net/ Le Sun, 24 May 2009 15:34:44 +0200, Mattias Helsing helsin...@gmail.com a écrit: Hi Sukender, On Sun, May 24, 2009 at 12:16 PM, Sukender suky0...@free.fr wrote: Hi all, Not much time STOP Wanted to make Win32 MSVC8 binaries for 2.8.1 STOP Had error CPack Error: Cannot find a suitable ZIP program when building Packages targets STOP Solution ? Thanks STOP Last time I looked Cmake could use winzip or 7-zip. CMake tries to locate these in %ProgramFiles%. See CPackZIP.cmake script in your cmake distribution. More info at: http://www.openscenegraph.org/projects/osg/wiki/Community/Packaging cheers Mattias -- Sukender PVLE - Lightweight cross-platform game engine - http://pvle.sourceforge.net/ ___ 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
[osg-users] Regression in .zip loader?
Hi all, have there been any recent changes in the .zip loader? I just noticed that I can no longer load a bunch of zipped .x files. OSG_NOTIFY_LEVEL=DEBUG shows that all plugins are found (.zip, .x, .bmp) but I still get 'No data loaded' from osgviewer. If I unpack the .zip file and load the .x directly everything is fine. Cheers, /ulrich ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Single-sided ClipPlane?
Ive worked out whats required to get my effect working , though im only guessing right now at the math required. Just need 4 clipPlanes facing into the into the scene surrounding the panel. Simple, in theory lol Cheers, PaulG [Image: http://img411.imageshack.us/img411/713/clipplanes.png ] -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=12864#12864 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Regression in .zip loader?
Hi Ulrich, If you've taken the recent trunk checkins, then the answer is yes, there have been some recent changes to the .zip loader. However, I had hoped that there would be no downsides to the amendments made. Essentially, where as previously the expansion of the .zip file was performed to the local filing system - ie your hard disk - now the unpacking process is all done in memory. There were some issues in getting the modification to compile on unix boxes, but I believe Robert solved that, and another maillist member made a modification to get it to compile on Mac's. So I thought it was all working. One issue that may now arise, and something that Robert and I are pondering, is where a model references a texture contained within the same zip file. At the moment, using the in-memory unpacking, this is not supported. Essentially we need to figure out how to use the .zip as an archive that can be interrogated for files during a model load operation. Hopefully Robert or I will have something on this in the near future. Until then...you could rename the original_readnode function in the .zip plugin to replace the new readnode (this would put you back to unpacking to the local file system). I understand that Robert is offline for a few days with a nasty cold/flu, but when he's back, we could look to make an amendment to provide an options switch to control which unpacking method is used. I may submit this anyway, and leave it to Robert to decide on acceptance. Hope the info helps, and sorry for any inconvenience that the amendment may have caused. Kind regards Neil. Ulrich Hertlein u.hertl...@sandbox.de wrote: Hi all, have there been any recent changes in the .zip loader? I just noticed that I can no longer load a bunch of zipped .x files. OSG_NOTIFY_LEVEL=DEBUG shows that all plugins are found (.zip, .x, .bmp) but I still get 'No data loaded' from osgviewer. If I unpack the .zip file and load the .x directly everything is fine. 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
Re: [osg-users] Single-sided ClipPlane?
Paul Griffiths wrote: Ive worked out whats required to get my effect working , though im only guessing right now at the math required. Just need 4 clipPlanes facing into the into the scene surrounding the panel. Simple, in theory lol Cheers, PaulG Given 3 points on a plane, the plane equation is: osg::Vec3 n = (pt1 - pt0) ^ (pt2 - pt1); float d = -n * pt0; osg::ClipPlane *cp = new osg::ClipPlane(i, n.x(), n.y(), n.z(), d); -- http://www.ssTk.co.uk ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] Binaries packages uploadedfo 2.8.1: Win32 VC8 and Linux (Ubuntu) GCC
Hi Robert, hi all I uploaded binaries packages for 2.8.1: Win32 VC8 and Linux (Ubuntu 9.04) GCC 32 bits. I'm *not* a linux maintainer, but as I compiled it and as it seems the binaries are not ready yet... :) Please tell if everything is okay. Sukender PVLE - Lightweight cross-platform game engine - http://pvle.sourceforge.net/ ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Capping holes made by clipping?
Hi,
I know I said I wouldnt need this feature for a while yet, but i do. I need to
impliment this before my toolkit gets too large.
So in the hope that someones up to the challenge I present here a simple
example of a shadowed scene containing a cube which has been split in half by a
clipPlane leaving a hole.
The challenge is to fill this hole.
Heres hoping,
Thank you!
Cheers,
PaulG
Code:
#include osg/ArgumentParser
#include osg/Texture2D
#include osg/ShapeDrawable
#include osg/ClipNode
#include osg/MatrixTransform
#include osg/Geometry
#include osgViewer/Viewer
#include osgShadow/ShadowedScene
#include osgShadow/ShadowMap
#include osgShadow/LightSpacePerspectiveShadowMap
#include iostream
#include osgGA/TrackballManipulator
static int ReceivesShadowTraversalMask = 0x1;
static int CastsShadowTraversalMask = 0x2;
int main(int argc, char** argv)
{
// use an ArgumentParser object to manage the program arguments.
osg::ArgumentParser arguments(argc, argv);
// construct the viewer.
osgViewer::Viewer viewer(arguments);
osg::ref_ptrosgShadow::ShadowedScene shadowedScene = new
osgShadow::ShadowedScene;
shadowedScene-setReceivesShadowTraversalMask(ReceivesShadowTraversalMask);
shadowedScene-setCastsShadowTraversalMask(CastsShadowTraversalMask);
osg::ref_ptrosgShadow::ShadowMap sm = new osgShadow::ShadowMap;
shadowedScene-setShadowTechnique(sm.get());
int mapres = 1024;
sm-setTextureSize(osg::Vec2s(mapres,mapres));
osg::Vec4 lightpos;
lightpos.set(0.5f,0.25f,0.8f,0.0f);
osg::ref_ptrosg::LightSource ls = new osg::LightSource;
ls-getLight()-setPosition(lightpos);
ls-getLight()-setAmbient(osg::Vec4(0.2,0.2,0.2,1.0));
ls-getLight()-setDiffuse(osg::Vec4(0.8,0.8,0.8,1.0));
osg::ref_ptrosg::ClipNode clipNode= new osg::ClipNode;
clipNode-setCullingActive(false);
osg::ref_ptrosg::MatrixTransform clipNodeTransform = new
osg::MatrixTransform;
osg::Matrix clipNodeTrans;
clipNodeTrans = osg::Matrix::translate(0.f, 5.f, 0.f);
clipNodeTransform-setMatrix(clipNodeTrans);
clipNodeTransform-addChild(clipNode);
shadowedScene-addChild(clipNodeTransform);
osg::ref_ptrosg::TessellationHints hints = new osg::TessellationHints;
hints-setDetailRatio(2.0f);
osg::ref_ptrosg::Geode geode = new osg::Geode();
geode-addDrawable(new osg::ShapeDrawable(new osg::Box(osg::Vec3(0.0f,
0.0f, -2.0f), 2.f, 2.f, 2.f), hints));
clipNode-addChild(geode.get());
osg::ClipPlane* clipPlane = new osg::ClipPlane();
osg::Vec4d plane;
plane.set(0.5f, 1.f, 0.f, 0.f);
clipPlane-setClipPlane(plane);
clipNode-addClipPlane(clipPlane);
shadowedScene-addChild(ls.get());
viewer.setSceneData(shadowedScene.get());
viewer.setCameraManipulator(new osgGA::TrackballManipulator);
// create the windows and run the threads.
viewer.realize();
while (!viewer.done())
{
{
osgShadow::MinimalShadowMap * msm =
dynamic_castosgShadow::MinimalShadowMap*( shadowedScene-getShadowTechnique()
);
if( msm ) {
// If scene decorated by CoordinateSystemNode
try to find localToWorld
// and set modellingSpaceToWorld matrix to
optimize scene bounds computation
osg::NodePath np =
viewer.getCoordinateSystemNodePath();
if( !np.empty() ) {
osg::CoordinateSystemNode * csn =
dynamic_castosg::CoordinateSystemNode *( np.back() );
if( csn ) {
osg::Vec3d pos =
viewer.getCameraManipulator()-getMatrix().getTrans();
msm-setModellingSpaceToWorldTransform
(
csn-computeLocalCoordinateFrame( pos ) );
}
}
}
}
viewer.frame();
}
return 0;
}
--
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=12867#12867
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Re: [osg-users] Destruction order for static objects
It appears that others are also experiencing RenderBinPrototypeList destruction problems when building osg as a static lib: http://lists.openscenegraph.org/pipermail/osg-users-openscenegraph.org/2009-April/026550.html -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=12869#12869 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Single-sided ClipPlane?
Simon wrote: Paul Griffiths wrote: Ive worked out whats required to get my effect working , though im only guessing right now at the math required. Just need 4 clipPlanes facing into the into the scene surrounding the panel. Simple, in theory lol Cheers, PaulG Given 3 points on a plane, the plane equation is: osg::Vec3 n = (pt1 - pt0) ^ (pt2 - pt1); float d = -n * pt0; osg::ClipPlane*cp = new osg::ClipPlane(i, n.x(), n.y(), n.z(), d); -- http://www.ssTk.co.uk ___ osg-users mailing list http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org -- Post generated by Mail2Forum Thanks for the math, was wondering how to project a plane based on 3 points. :D -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=12870#12870 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
