Re: [osg-users] Extracting embedded Textures
Hi Frank, On Tue, Sep 23, 2008 at 6:26 PM, Evans, Frank [EMAIL PROTECTED] wrote: Thanks once again for the incredibly fast response. Up to now I've been using the OsgDotNet wrappers, so writing a Custom Visitor class means maintaining and updating the wrappers as well. At least, if I understand the solution correctly. I will of course make every effort to leverage the native loader. Wrappers do have their disadvantages, but if you go this route then you do need to accept that their at times when you have to dig down to the metal to get the job done. If this means helping maintain the wrappers then this no bad thing - you'll get updates to the latest OSG features/bug features as well as ability to solve some of your problems. The alternatively of writing a whole loader for an undocumented and varying file format sounds like far more work now and in the long run. Robert. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Extracting embedded Textures
Thanks Paul. Yes, I see what you mean. The code does indeed serve as a format spec. I'm going work on Robert's visitor-node suggestion this weekend, but having insight into the underlying format makes things a lot easier. BTW, on the subject of Java/.NET wrappers I've had a lot of success with IKVM in the last year. http://www.ikvm.net/index.html That is, maintaining code in java and compiling the jars into CLR assemblies. I haven't tried it with JNI, but IKVM supports JNI, so it might be possible to maintaining a single OSG wrapper library for both runtimes. IKVM is a great tool, but its important to use it appropriately. I use it for class loaders, and helper classes. I wouldn't use it for rendering. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Paul Speed Sent: Wednesday, September 24, 2008 1:11 AM To: OpenSceneGraph Users Subject: Re: [osg-users] Extracting embedded Textures I almost hate to draw attention to this but just in case it ever matters... For various reasons, I ended up writing some IVE readers in Java. Mostly because I had some .ive files that no version of OSG I had available would load correctly. And partly because this is the sort of thing that feeds an odd manic part of my brain. At any rate, the stuff is implemented to allow code configurable profiles because I was pretty sure I was going to have to hack a non-standard version. The result of which is something that is almost like documentation... in code: http://meta-jb.cvs.sourceforge.net/meta-jb/sandbox/src/java/org/progeeks /osg/io/StandardIveConfiguration.java?revision=1.11view=markup Each supported object type has an individual object profile with field types added (with an optional version designator). I never finished it so there are some objects that aren't defined yet but I got it to the point that it could load all of my own IVE files and I was able to determine more about what was wrong with my bad ones. There have also been some changes in the IVE format that are harder to configure this way (byte ordering changes, etc.)... one day I may even get back to it. Not sure it's at all useful, but it does centrally describe (in a way) the IVE format... with a little translation. Other than that, it's probably only useful to me. :) -Paul Evans, Frank wrote: Thanks once again for the incredibly fast response. Up to now I've been using the OsgDotNet wrappers, so writing a Custom Visitor class means maintaining and updating the wrappers as well. At least, if I understand the solution correctly. I will of course make every effort to leverage the native loader. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Robert Osfield Sent: Tuesday, September 23, 2008 12:53 PM To: OpenSceneGraph Users Subject: Re: [osg-users] Extracting embedded Textures On Tue, Sep 23, 2008 at 5:45 PM, Evans, Frank [EMAIL PROTECTED] wrote: Thanks Robert, grinding through the learning curve now. Getting to the vertices was easy (getVertexArray). Was looking for something similar for image/textures. It's straight forward, just look at the NodeVisitor examples I mentioned. Is there any documentation on the IVE format? A spec file? No there is no spec file, it is not meant to be read in a non native way like an interchanges format such Collada. Given you have a perfectly serviceable loader it'd be madness to try and read it by hand, please just use my suggestion. Robert. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.or g ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.or g ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.or g ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] Extracting embedded Textures
I need to extract the embedded textures in IVE files for use in another application. osgconv is not an option. Need to do it programmatically via the API. 1. Is there any mechanism, direct or circuitous, for getting a handle on an embedded texture in an IVE file? 2. Is there any spec document for the IVE format? Thanks in advance ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Extracting embedded Textures
HI Frank, Just load the .ive file then use a custom NodeVisitor to traverse the scene and on encoutering StateSet on the Node and Drawables check from Texture, then the Image's attached to the Textures. There a examples of NodeVisitor all over the OSG, and even some that do searches for textures. The osgUtil::GLObjectVisitor wouldn't be a bad guide for you. Robert. On Tue, Sep 23, 2008 at 3:23 PM, Evans, Frank [EMAIL PROTECTED] wrote: I need to extract the embedded textures in IVE files for use in another application. osgconv is not an option. Need to do it programmatically via the API. 1. Is there any mechanism, direct or circuitous, for getting a handle on an embedded texture in an IVE file? 2. Is there any spec document for the IVE format? Thanks in advance…. ___ 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] Extracting embedded Textures
Thanks Robert, grinding through the learning curve now. Getting to the vertices was easy (getVertexArray). Was looking for something similar for image/textures. Is there any documentation on the IVE format? A spec file? -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Robert Osfield Sent: Tuesday, September 23, 2008 10:28 AM To: OpenSceneGraph Users Subject: Re: [osg-users] Extracting embedded Textures HI Frank, Just load the .ive file then use a custom NodeVisitor to traverse the scene and on encoutering StateSet on the Node and Drawables check from Texture, then the Image's attached to the Textures. There a examples of NodeVisitor all over the OSG, and even some that do searches for textures. The osgUtil::GLObjectVisitor wouldn't be a bad guide for you. Robert. On Tue, Sep 23, 2008 at 3:23 PM, Evans, Frank [EMAIL PROTECTED] wrote: I need to extract the embedded textures in IVE files for use in another application. osgconv is not an option. Need to do it programmatically via the API. 1. Is there any mechanism, direct or circuitous, for getting a handle on an embedded texture in an IVE file? 2. Is there any spec document for the IVE format? Thanks in advance ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.or g ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.or g ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Extracting embedded Textures
On Tue, Sep 23, 2008 at 5:45 PM, Evans, Frank [EMAIL PROTECTED] wrote: Thanks Robert, grinding through the learning curve now. Getting to the vertices was easy (getVertexArray). Was looking for something similar for image/textures. It's straight forward, just look at the NodeVisitor examples I mentioned. Is there any documentation on the IVE format? A spec file? No there is no spec file, it is not meant to be read in a non native way like an interchanges format such Collada. Given you have a perfectly serviceable loader it'd be madness to try and read it by hand, please just use my suggestion. Robert. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Extracting embedded Textures
Thanks once again for the incredibly fast response. Up to now I've been using the OsgDotNet wrappers, so writing a Custom Visitor class means maintaining and updating the wrappers as well. At least, if I understand the solution correctly. I will of course make every effort to leverage the native loader. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Robert Osfield Sent: Tuesday, September 23, 2008 12:53 PM To: OpenSceneGraph Users Subject: Re: [osg-users] Extracting embedded Textures On Tue, Sep 23, 2008 at 5:45 PM, Evans, Frank [EMAIL PROTECTED] wrote: Thanks Robert, grinding through the learning curve now. Getting to the vertices was easy (getVertexArray). Was looking for something similar for image/textures. It's straight forward, just look at the NodeVisitor examples I mentioned. Is there any documentation on the IVE format? A spec file? No there is no spec file, it is not meant to be read in a non native way like an interchanges format such Collada. Given you have a perfectly serviceable loader it'd be madness to try and read it by hand, please just use my suggestion. Robert. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.or g ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Extracting embedded Textures
I almost hate to draw attention to this but just in case it ever matters... For various reasons, I ended up writing some IVE readers in Java. Mostly because I had some .ive files that no version of OSG I had available would load correctly. And partly because this is the sort of thing that feeds an odd manic part of my brain. At any rate, the stuff is implemented to allow code configurable profiles because I was pretty sure I was going to have to hack a non-standard version. The result of which is something that is almost like documentation... in code: http://meta-jb.cvs.sourceforge.net/meta-jb/sandbox/src/java/org/progeeks/osg/io/StandardIveConfiguration.java?revision=1.11view=markup Each supported object type has an individual object profile with field types added (with an optional version designator). I never finished it so there are some objects that aren't defined yet but I got it to the point that it could load all of my own IVE files and I was able to determine more about what was wrong with my bad ones. There have also been some changes in the IVE format that are harder to configure this way (byte ordering changes, etc.)... one day I may even get back to it. Not sure it's at all useful, but it does centrally describe (in a way) the IVE format... with a little translation. Other than that, it's probably only useful to me. :) -Paul Evans, Frank wrote: Thanks once again for the incredibly fast response. Up to now I've been using the OsgDotNet wrappers, so writing a Custom Visitor class means maintaining and updating the wrappers as well. At least, if I understand the solution correctly. I will of course make every effort to leverage the native loader. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Robert Osfield Sent: Tuesday, September 23, 2008 12:53 PM To: OpenSceneGraph Users Subject: Re: [osg-users] Extracting embedded Textures On Tue, Sep 23, 2008 at 5:45 PM, Evans, Frank [EMAIL PROTECTED] wrote: Thanks Robert, grinding through the learning curve now. Getting to the vertices was easy (getVertexArray). Was looking for something similar for image/textures. It's straight forward, just look at the NodeVisitor examples I mentioned. Is there any documentation on the IVE format? A spec file? No there is no spec file, it is not meant to be read in a non native way like an interchanges format such Collada. Given you have a perfectly serviceable loader it'd be madness to try and read it by hand, please just use my suggestion. Robert. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.or g ___ 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
