Re: [osg-users] loading vrml segfault
Hello, There is some header information that identifies the file type. So just looking at the first few lines should identify the version. Editing the type information can make a VRML 1.0 file believe that it is a VRML 97 file. However, if there are serious errors in loading files then there is a node with a field that has changed between VRML 1.0 and VRML 97. The best place to find out such information is in the VRML 97 specification and by looking at the various documents at www.web3d.org. You have to search because the focus is on 3-D XML = X3D. So, some of the VRML stuff is buried. But all the specs are there and probably archives of the old stuff (like VRML 1.0). One simple strategy is to preprocess and input files. This can be done manually by inputting the file to Chisel [vrml syntax checker] http://www2.hrp.no/vr/tools/chisel/install.htm This will tell you what statements in the file are invalid. Then you have to just replace them with the VRML 2 equivalent. I thought that there was a VRML 1.0 to VRML 97 translator on the consortium site but can't find it. John F. Richardson -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Ben Axelrod Sent: Wednesday, September 24, 2008 11:41 AM To: OpenSceneGraph Users Subject: Re: [osg-users] loading vrml segfault This page indicates that OpenInventor only supports VRML 1.0 files. (http://www.openscenegraph.org/projects/osg/wiki/Support/UserGuides/Plugins) And from my own experience, OpenVRML only supports VRML 2.0 files. Can OSG handle both of these libraries at the same time? I am a little doubtful since the VRML file must be parsed before it can be determined if it is VRML 1.0 or VRML 2.0. And OpenVRML segfaults when trying to load a VRML 1.0 file. Does anyone have any experience supporting both VRML 1.0 and VRML 2.0 file types? Thanks, -Ben -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Bob Huebert Sent: Thursday, September 18, 2008 6:20 PM To: OpenSceneGraph Users Subject: Re: [osg-users] loading vrml segfault Hi Ben, I tried your wrl files using osg with the coin3d plugin (alternate for some of what openvrml does) and got predictable results, given your post. When bombing on the Bad.wrl file, coin kindly provided the following: % osgviewer Bad.wrl Coin read error: Unknown field mesh in VRMLShape Occurred at line 5 in Bad.wrl osgviewer: No data loaded Maybe this will help? -bob On Thu, 18 Sep 2008, Ben Axelrod wrote: When I try to load a VRML 1.0 file in OpenSceneGraph, it segfaults. I am using OpenSceneGraph 2.6, and OpenVRML 0.14.3. I have attached the file that causes the segfault, as well as the same file with some minor changes to make it run properly. The segfault happens inside: osgDB::readNodeFile(filename). It would be great if OSG could detect the error, and return properly with an invalid node. But I understand if the fault is inside of OpenVRML. Thanks, -Ben ___ 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] loading vrml segfault
Hello, Probably windows only but Octaga has a free tool for converting from vrml1 to vrml 97 : http://www.octaga.com/freedownloads/Vrml10to20/VRML10To20.zip It comes with absolutely no guarantees and no warranty. John F. Richardson -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of John F. Richardson Sent: Thursday, September 25, 2008 10:15 AM To: 'OpenSceneGraph Users' Subject: Re: [osg-users] loading vrml segfault Hello, There is some header information that identifies the file type. So just looking at the first few lines should identify the version. Editing the type information can make a VRML 1.0 file believe that it is a VRML 97 file. However, if there are serious errors in loading files then there is a node with a field that has changed between VRML 1.0 and VRML 97. The best place to find out such information is in the VRML 97 specification and by looking at the various documents at www.web3d.org. You have to search because the focus is on 3-D XML = X3D. So, some of the VRML stuff is buried. But all the specs are there and probably archives of the old stuff (like VRML 1.0). One simple strategy is to preprocess and input files. This can be done manually by inputting the file to Chisel [vrml syntax checker] http://www2.hrp.no/vr/tools/chisel/install.htm This will tell you what statements in the file are invalid. Then you have to just replace them with the VRML 2 equivalent. I thought that there was a VRML 1.0 to VRML 97 translator on the consortium site but can't find it. John F. Richardson -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Ben Axelrod Sent: Wednesday, September 24, 2008 11:41 AM To: OpenSceneGraph Users Subject: Re: [osg-users] loading vrml segfault This page indicates that OpenInventor only supports VRML 1.0 files. (http://www.openscenegraph.org/projects/osg/wiki/Support/UserGuides/Plugins) And from my own experience, OpenVRML only supports VRML 2.0 files. Can OSG handle both of these libraries at the same time? I am a little doubtful since the VRML file must be parsed before it can be determined if it is VRML 1.0 or VRML 2.0. And OpenVRML segfaults when trying to load a VRML 1.0 file. Does anyone have any experience supporting both VRML 1.0 and VRML 2.0 file types? Thanks, -Ben -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Bob Huebert Sent: Thursday, September 18, 2008 6:20 PM To: OpenSceneGraph Users Subject: Re: [osg-users] loading vrml segfault Hi Ben, I tried your wrl files using osg with the coin3d plugin (alternate for some of what openvrml does) and got predictable results, given your post. When bombing on the Bad.wrl file, coin kindly provided the following: % osgviewer Bad.wrl Coin read error: Unknown field mesh in VRMLShape Occurred at line 5 in Bad.wrl osgviewer: No data loaded Maybe this will help? -bob On Thu, 18 Sep 2008, Ben Axelrod wrote: When I try to load a VRML 1.0 file in OpenSceneGraph, it segfaults. I am using OpenSceneGraph 2.6, and OpenVRML 0.14.3. I have attached the file that causes the segfault, as well as the same file with some minor changes to make it run properly. The segfault happens inside: osgDB::readNodeFile(filename). It would be great if OSG could detect the error, and return properly with an invalid node. But I understand if the fault is inside of OpenVRML. Thanks, -Ben ___ 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 mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] loading vrml segfault
This page indicates that OpenInventor only supports VRML 1.0 files. (http://www.openscenegraph.org/projects/osg/wiki/Support/UserGuides/Plugins) And from my own experience, OpenVRML only supports VRML 2.0 files. Can OSG handle both of these libraries at the same time? I am a little doubtful since the VRML file must be parsed before it can be determined if it is VRML 1.0 or VRML 2.0. And OpenVRML segfaults when trying to load a VRML 1.0 file. Does anyone have any experience supporting both VRML 1.0 and VRML 2.0 file types? Thanks, -Ben -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Bob Huebert Sent: Thursday, September 18, 2008 6:20 PM To: OpenSceneGraph Users Subject: Re: [osg-users] loading vrml segfault Hi Ben, I tried your wrl files using osg with the coin3d plugin (alternate for some of what openvrml does) and got predictable results, given your post. When bombing on the Bad.wrl file, coin kindly provided the following: % osgviewer Bad.wrl Coin read error: Unknown field mesh in VRMLShape Occurred at line 5 in Bad.wrl osgviewer: No data loaded Maybe this will help? -bob On Thu, 18 Sep 2008, Ben Axelrod wrote: When I try to load a VRML 1.0 file in OpenSceneGraph, it segfaults. I am using OpenSceneGraph 2.6, and OpenVRML 0.14.3. I have attached the file that causes the segfault, as well as the same file with some minor changes to make it run properly. The segfault happens inside: osgDB::readNodeFile(filename). It would be great if OSG could detect the error, and return properly with an invalid node. But I understand if the fault is inside of OpenVRML. Thanks, -Ben ___ 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] loading vrml segfault
When I try to load a VRML 1.0 file in OpenSceneGraph, it segfaults. I am using OpenSceneGraph 2.6, and OpenVRML 0.14.3. I have attached the file that causes the segfault, as well as the same file with some minor changes to make it run properly. The segfault happens inside: osgDB::readNodeFile(filename). It would be great if OSG could detect the error, and return properly with an invalid node. But I understand if the fault is inside of OpenVRML. Thanks, -Ben vrmltest.tar.bz2 Description: vrmltest.tar.bz2 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
