[osg-users] Problem with osgAnimationViewer example
Hi all My name is Aitor Arrieta and I am currently working for VICOMTech Research Center in Donosti (Spain). We have differente projects in which we use some animated avatars in an OSG environment so we are interested in the new osg::Animation plugin. I have downloaded the new osg version (2.8.0) in which this plugin is included and I have successfully compiled it. The problem comes when I try to execute the animation examples. There is no problem with all of them but with the osg animation viewer. I will try to explain it. Frist of all, when I run osganimationviewer.exe example.osg the application gives me the following error: osganimationviewer.exe: no data loaded. That is, the error comes when the program tries to read the example.osg node file. However, if I run osganimationviewer.exe cessna.osg (cessna.osg is taken from an older version of osg) the program runs ok (there are some other errors but at least I can see the object loaded in the scene). This means that maybe the program does not find any dll (or something like that) in order to load the osg file. I am running the example from the /bin directory of osg and I have even copied all the dll-s from the osgplugins-2.8.0 folder there too. The example.osg file is also in the same directory. I have also osg 2.4 installed in my computer but this is not a problem, is it? As you can see, I am not an expert with osg so sorry if my question sounds stupid. And sorry for my bad english too. I look forward to hearing from you. Thank you very much in advance. Regards, Aitor -- Aitor Arrieta Larrea Investigador colaborador / Research Assistant VICOMTech - Visual Interaction and Communication Technologies Center Mikeletegi Pasealekua, 57 - Parque Tecnológico E-20009 Donostia - San Sebastián, Spain Tel: +[34] 943 30 92 30 Fax: +[34] 943 30 93 93 e-mail: aarri...@vicomtech.org http://www.vicomtech.org *** member of INI-GraphicsNet http://www.inigraphics.net *** member of IK4 Research Alliance http://www.ik4.es ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Problem with osgAnimationViewer example
Hi all Thank you very much for your help. I really appreciate it. I have downloaded the trunk version from svn and now everything works ok (well, I don't see the images on the buttons but this is not relevant). It looks really nice and I think it will be very helpful for us. However, now I have a lot of questions like, for example, how can I create my own osg animated files? I mean , is it possible to do it from Maya, Poser, Blender, etc...? Or how does the bvh plugin work? Does it create a new skeleton from the bvh file or can I import the animation into an existing figure, even having different skeletons? I've been looking in your web but I'm not able to find any documentation about all these new features. Maybe you're working on it right now? Well, I look forward to hearing from you. Thanks again for your help. Cheers, AItor -- Aitor Arrieta Larrea Investigador colaborador / Research Assistant VICOMTech - Visual Interaction and Communication Technologies Center Mikeletegi Pasealekua, 57 - Parque Tecnológico E-20009 Donostia - San Sebastián, Spain Tel: +[34] 943 30 92 30 Fax: +[34] 943 30 93 93 e-mail: aarri...@vicomtech.org http://www.vicomtech.org *** member of INI-GraphicsNet http://www.inigraphics.net *** member of IK4 Research Alliance http://www.ik4.es ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] Using different textures for the same geometry
Hi all First of all, this is my first time writing here so sorry if I do something wrong... Here is my question. I have an obj file, which I have exported from Poser. I have modified this file in order to have only one geometry, that is, there is only one osg::node. This new file works fine in my application and I can see the figure with no problems. However, the problem comes when I try to apply the original textures to this figure, because I have more than one image files for the single osg::Node. As far as I know, there could be two different solutions for this problem: 1- Create a single texture combining all the textures I have and then apply it to the node 2- Apply a different texture to each vertex group For the first one, I have googled for some days and I am not able to find a program which can do it. For the second one, I know which vertex should be with any of the different textures, but I do not know the way to do it from c++ using the osg libraries. Can anyone please help me? I know that my explanation was not very good so if you need further information just ask for it. Thank you very much in advance. Regards, Aitor ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Using different textures for the same geometry
Hi Robert, Thank you very much for your reply. I have a single geometry and I want to apply different textures for it. That is, imagine a figure of a woman which is a single geometry. However, I have a texture for the head, another one for the body, another one for the shirt, etc... Do you understand? Sorry if I explained it badly, but I am not good explaining things and even worse in english :) Thanks a lot for your reply Robert, Regards, Aitor ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Using different textures for the same geometry
Hi Paul Thank you very much for your reply. I think it will be easier to take the solution #2. For our application, the only restriction we have is that we must use a single vertex array. But if you say that this is possible to do even when using different geometries, I will investigate more about this option. Thanks a lot Paul Regards, Aitor ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Sharing Vertex Arrays between Geometry Nodes
Hi Paul Thanks a lot for your reply, but unfortunately I think that my question is not as simple as you think. Sorry because it was my fault as I did not explain myself correctly. The problem is that I must have a single vertex arrays for many different geometries but each geometry uses only a part of this vertex array. That is, imagine a single vertex array with indices from 1 to 100. I should have geometry 1 with indices from 1 to 10, geometry 2 with indices from 11 to 20, etc. But all of them sharing the same vertex array, which is used to do some other things. Sorry for my bad explanation and thanks again for your reply. Best regards, Aitor - Mensaje original De: Paul Martz [EMAIL PROTECTED] Para: OpenSceneGraph Users osg-users@lists.openscenegraph.org Enviado: martes, 14 de octubre, 2008 16:54:00 Asunto: Re: [osg-users] Sharing Vertex Arrays between Geometry Nodes osg::Geometry* geom0 = new osg::Geometry; osg::Geometry* geom1 = new osg::Geometry; osg::Vec3Array* verts = osg::Vec3Array; geom0-setVertexArray( verts ); geom1-setVertexArray( verts ); Hope that helps. -Paul From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Aitor Arrieta Sent: Tuesday, October 14, 2008 8:39 AM To: osg-users@lists.openscenegraph.org Subject: [osg-users] Sharing Vertex Arrays between Geometry Nodes Hi all, I am developing an application in which I have to share the same vertex array between different nodes in order to apply a different texture to each of them. I know that this is possible to do because I have read it. However, I am a beginner in the osg world and I am not able to find the way to do it. Someone told me that I could use the same geode having different geometries but how can I specify a vertex array for a geode? As far as I know this is impossible, is not it? I have also read something about using the DrawElementsUShort primitive but how should I use it? My question is: is there any example of sharing vertex arrays between geometry nodes anywhere? Or has anybody done this before? In short, could anybody please help me with this task? Thank you very much in advance. Regards, Aitor ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Sharing Vertex Arrays between Geometry Nodes
Hi Paul Thanks again for your prompt reply and sorry for my stupid message. As I have said before, I am completely a beginner in this osg world I will try to apply your code and see what happens. Regards, Aitor - Mensaje original De: Paul Martz [EMAIL PROTECTED] Para: OpenSceneGraph Users osg-users@lists.openscenegraph.org Enviado: martes, 14 de octubre, 2008 17:38:17 Asunto: Re: [osg-users] Sharing Vertex Arrays between Geometry Nodes The code I posted will work for the use case you describe. Indices are part of the PrimitiveSet; assign a different PrimitiveSet (with different indices) to each Geometry and they will index into the same vertex array. -Paul From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Aitor Arrieta Sent: Tuesday, October 14, 2008 9:05 AM To: OpenSceneGraph Users Subject: Re: [osg-users] Sharing Vertex Arrays between Geometry Nodes Hi Paul Thanks a lot for your reply, but unfortunately I think that my question is not as simple as you think. Sorry because it was my fault as I did not explain myself correctly. The problem is that I must have a single vertex arrays for many different geometries but each geometry uses only a part of this vertex array.. That is, imagine a single vertex array with indices from 1 to 100. I should have geometry 1 with indices from 1 to 10, geometry 2 with indices from 11 to 20, etc. But all of them sharing the same vertex array, which is used to do some other things. Sorry for my bad explanation and thanks again for your reply. Best regards, Aitor - Mensaje original De: Paul Martz [EMAIL PROTECTED] Para: OpenSceneGraph Users osg-users@lists.openscenegraph.org Enviado: martes, 14 de octubre, 2008 16:54:00 Asunto: Re: [osg-users] Sharing Vertex Arrays between Geometry Nodes osg::Geometry* geom0 = new osg::Geometry; osg::Geometry* geom1 = new osg::Geometry; osg::Vec3Array* verts = osg::Vec3Array; geom0-setVertexArray( verts ); geom1-setVertexArray( verts ); Hope that helps. -Paul From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Aitor Arrieta Sent: Tuesday, October 14, 2008 8:39 AM To: osg-users@lists.openscenegraph.org Subject: [osg-users] Sharing Vertex Arrays between Geometry Nodes Hi all, I am developing an application in which I have to share the same vertex array between different nodes in order to apply a different texture to each of them. I know that this is possible to do because I have read it. However, I am a beginner in the osg world and I am not able to find the way to do it. Someone told me that I could use the same geode having different geometries but how can I specify a vertex array for a geode? As far as I know this is impossible, is not it? I have also read something about using the DrawElementsUShort primitive but how should I use it? My question is: is there any example of sharing vertex arrays between geometry nodes anywhere? Or has anybody done this before? In short, could anybody please help me with this task? Thank you very much in advance. Regards, Aitor ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Sharing Vertex Arrays between Geometry Nodes
Hi Paul I don't know if this is a stupid question or not but I'm already going crazy... I can't use your code because I don't create new geometries. Instead of this, I get an osg::geode from an obj file. At this moment, I can only get a single geometry from the geode and apply a single texture to it. But this is not what I want. The obj file represents a human figure, and I would like to separate the head from the body because they have different textures. I know which vertices are from the head and which ones for the body so this won't be a problem in this case. The problem is that they must share the same vertex array, which is used to do some morph tasks. My question is, how can I create two different geometries starting from the same geode and sharing the same vertex array? Is this possible or not? Thanks a lot Paul and sorry for the inconveniences Regards, Aitor - Mensaje original De: Paul Martz [EMAIL PROTECTED] Para: OpenSceneGraph Users osg-users@lists.openscenegraph.org Enviado: martes, 14 de octubre, 2008 17:38:17 Asunto: Re: [osg-users] Sharing Vertex Arrays between Geometry Nodes The code I posted will work for the use case you describe. Indices are part of the PrimitiveSet; assign a different PrimitiveSet (with different indices) to each Geometry and they will index into the same vertex array. -Paul From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Aitor Arrieta Sent: Tuesday, October 14, 2008 9:05 AM To: OpenSceneGraph Users Subject: Re: [osg-users] Sharing Vertex Arrays between Geometry Nodes Hi Paul Thanks a lot for your reply, but unfortunately I think that my question is not as simple as you think. Sorry because it was my fault as I did not explain myself correctly. The problem is that I must have a single vertex arrays for many different geometries but each geometry uses only a part of this vertex array.. That is, imagine a single vertex array with indices from 1 to 100. I should have geometry 1 with indices from 1 to 10, geometry 2 with indices from 11 to 20, etc. But all of them sharing the same vertex array, which is used to do some other things. Sorry for my bad explanation and thanks again for your reply. Best regards, Aitor - Mensaje original De: Paul Martz [EMAIL PROTECTED] Para: OpenSceneGraph Users osg-users@lists.openscenegraph.org Enviado: martes, 14 de octubre, 2008 16:54:00 Asunto: Re: [osg-users] Sharing Vertex Arrays between Geometry Nodes osg::Geometry* geom0 = new osg::Geometry; osg::Geometry* geom1 = new osg::Geometry; osg::Vec3Array* verts = osg::Vec3Array; geom0-setVertexArray( verts ); geom1-setVertexArray( verts ); Hope that helps. -Paul From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Aitor Arrieta Sent: Tuesday, October 14, 2008 8:39 AM To: osg-users@lists.openscenegraph.org Subject: [osg-users] Sharing Vertex Arrays between Geometry Nodes Hi all, I am developing an application in which I have to share the same vertex array between different nodes in order to apply a different texture to each of them. I know that this is possible to do because I have read it. However, I am a beginner in the osg world and I am not able to find the way to do it. Someone told me that I could use the same geode having different geometries but how can I specify a vertex array for a geode? As far as I know this is impossible, is not it? I have also read something about using the DrawElementsUShort primitive but how should I use it? My question is: is there any example of sharing vertex arrays between geometry nodes anywhere? Or has anybody done this before? In short, could anybody please help me with this task? Thank you very much in advance. Regards, Aitor ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Sharing Vertex Arrays between Geometry Nodes
Hi Paul I don't know but maybe... Would it be easier to combine both textures (head and body) and create a new obj file using this new texture? You should take into account that I have never done something like that (I don't know even which program should I use) Regards, Aitor - Mensaje original De: Paul Martz [EMAIL PROTECTED] Para: OpenSceneGraph Users osg-users@lists.openscenegraph.org Enviado: martes, 14 de octubre, 2008 17:38:17 Asunto: Re: [osg-users] Sharing Vertex Arrays between Geometry Nodes The code I posted will work for the use case you describe. Indices are part of the PrimitiveSet; assign a different PrimitiveSet (with different indices) to each Geometry and they will index into the same vertex array. -Paul From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Aitor Arrieta Sent: Tuesday, October 14, 2008 9:05 AM To: OpenSceneGraph Users Subject: Re: [osg-users] Sharing Vertex Arrays between Geometry Nodes Hi Paul Thanks a lot for your reply, but unfortunately I think that my question is not as simple as you think. Sorry because it was my fault as I did not explain myself correctly. The problem is that I must have a single vertex arrays for many different geometries but each geometry uses only a part of this vertex array.. That is, imagine a single vertex array with indices from 1 to 100. I should have geometry 1 with indices from 1 to 10, geometry 2 with indices from 11 to 20, etc.. But all of them sharing the same vertex array, which is used to do some other things. Sorry for my bad explanation and thanks again for your reply. Best regards, Aitor - Mensaje original De: Paul Martz [EMAIL PROTECTED] Para: OpenSceneGraph Users osg-users@lists.openscenegraph.org Enviado: martes, 14 de octubre, 2008 16:54:00 Asunto: Re: [osg-users] Sharing Vertex Arrays between Geometry Nodes osg::Geometry* geom0 = new osg::Geometry; osg::Geometry* geom1 = new osg::Geometry; osg::Vec3Array* verts = osg::Vec3Array; geom0-setVertexArray( verts ); geom1-setVertexArray( verts ); Hope that helps. -Paul From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Aitor Arrieta Sent: Tuesday, October 14, 2008 8:39 AM To: osg-users@lists.openscenegraph.org Subject: [osg-users] Sharing Vertex Arrays between Geometry Nodes Hi all, I am developing an application in which I have to share the same vertex array between different nodes in order to apply a different texture to each of them. I know that this is possible to do because I have read it. However, I am a beginner in the osg world and I am not able to find the way to do it. Someone told me that I could use the same geode having different geometries but how can I specify a vertex array for a geode? As far as I know this is impossible, is not it? I have also read something about using the DrawElementsUShort primitive but how should I use it? My question is: is there any example of sharing vertex arrays between geometry nodes anywhere? Or has anybody done this before? In short, could anybody please help me with this task? Thank you very much in advance. Regards, Aitor ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Sharing Vertex Arrays between Geometry Nodes
Hi J-S and Paul Thanks a lot for your reply. I would like to be able to have a correct model from the beginning but unfortunately I must use a given obj file... So I don't have any option but trying to solve my problem by code. I have been doing some tests today and at this moment I'm able to separate the two geometries applying different textures for each of them and sharing the same vertex array but with different primitive sets. I'm still having some problems with the vertices near the neck but I think that I know how to solve them. Let's wait until tomorrow... I'm also having some strange problems with the light or something like that because I only see the textures from the back of the human figure. If I see the figure from the front everything is black... It's strange because when I had only a single geometry everything was ok and I have not set anything about lights after that... Maybe it could be a problem with the normals but if I remove the normal array from the geometries the problem is still there. Do you know what could be happenning? Thank you very much for your help. Regards, Aitor - Mensaje original De: Jean-Sébastien Guay [EMAIL PROTECTED] Para: OpenSceneGraph Users osg-users@lists.openscenegraph.org Enviado: miércoles, 15 de octubre, 2008 16:29:59 Asunto: Re: [osg-users] Sharing Vertex Arrays between Geometry Nodes Hi Aitor, I can't use your code because I don't create new geometries. Instead of this, I get an osg::geode from an obj file. At this moment, I can only get a single geometry from the geode and apply a single texture to it. But this is not what I want. The obj file represents a human figure, and I would like to separate the head from the body because they have different textures. I know which vertices are from the head and which ones for the body so this won't be a problem in this case. The problem is that they must share the same vertex array, which is used to do some morph tasks. My question is, how can I create two different geometries starting from the same geode and sharing the same vertex array? Is this possible or not? Your life would be simpler if you could get a correct model as soon as you load it, instead of trying to massage it (and how you massage it might change from one model to the next). However, yes, what you ask is possible. You can traverse your model to the Geode which contains the Geometry, then create new Geometry objects, attach them to the Geode, and remove the original one. The new Geometry objects can reference the original one's vertex arrays, and then when you remove the original one from the Geode the vertex arrays won't be deleted because other Geometry objects reference them. Then on your new Geometry object(s), you can do what you want. So you could add primitive sets for the correct vertices to be used, you could add texture coordinate arrays (or reuse those from the original Geometry object), etc. As I said, it's a lot of trouble. If you can get a valid model right away, your life will be easier. It's not the kind of thing that's best done in code... Modeling tools are specialized in manipulating these kinds of things... J-S -- __ Jean-Sebastien Guay[EMAIL PROTECTED] http://www.cm-labs.com/ http://whitestar02.webhop.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] Sharing Vertex Arrays between Geometry Nodes
Hi J-S, Paul and Robert After some days and several hours of work, I can finally say that my application is now working fine. Of course I could never have solved my problem without your help so I have no words to show my gratitude. Thanks a lot for your help. Regards, Aitor - Mensaje original De: Jean-Sébastien Guay [EMAIL PROTECTED] Para: OpenSceneGraph Users [EMAIL PROTECTED] Enviado: jueves, 16 de octubre, 2008 18:31:30 Asunto: Re: [osg-users] Sharing Vertex Arrays between Geometry Nodes Hi Aitor, I'm also having some strange problems with the light or something like that because I only see the textures from the back of the human figure. If I see the figure from the front everything is black... It's strange because when I had only a single geometry everything was ok and I have not set anything about lights after that... Maybe it could be a problem with the normals but if I remove the normal array from the geometries the problem is still there. Do you know what could be happenning? Did you copy the other arrays from the original Geometry object to the new one(s)? The normal array and color arrays need to be copied, and normalBinding and colorBinding need to be set to BIND_PER_VERTEX.. Actually, I think just cloning the original Geometry object, removing any PrimitiveSets it had, and then adding new ones would work best, least chance to make a mistake copying things yourself. J-S -- __ Jean-Sebastien Guay[EMAIL PROTECTED] http://www.cm-labs.com/ http://whitestar02.webhop.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
