Re: [osg-users] [osgPlugins] OpenFlight-Plugin - How to store individual object in seperate geode?
Hi Brede, Thanks very much for the info. Yup, with osgconv, I managed to compare the source flt database and the coverted osg format. Seems like the objects are already merged in the flt database. So I guess I have to find a way to modify the source before loading it to osg [Wink] Once again, thanks for your help. -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=9818#9818 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] [osgPlugins] OpenFlight-Plugin - How to store individual object in seperate geode?
Hi Bulkhead, I don't know about a reference manual but you have the source. The Optimizer header file is a good reference. Yes, you typically create a custom visitor and set the permitted optimization for the objects (node,stateset, drawable etc.) in question. For the option parameter I would probably start with 0 before fine tuning. To Paul: Next time ;-) I'm trying to keep up with the development of OSG. You never know when it may come in handy. Regards Brede On Mon, Apr 6, 2009 at 6:04 AM, Bulkhead wgy...@gmail.com wrote: Hi Brede, Thanks for the reply. I did a search on the setPermissibleOptimizationsForObject() fucntion and read your posting on osg-users mail-archive, and yup, I think very high chance that this will solve my problem [Wink] But unfortunately, I couldn't find any reference on how to use this function. The first parameter is an osg::Object pointer. Should I pass in every geode (using a geodeVisitor)? As for the second parameter, it will be all the optimization options, except MERGE_GEOMETRY? Also please advise if there's any reference manual that I can refer to? The one on osg wiki page doesn't give much info. Thanks in advanced. -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=9764#9764 ___ 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] [osgPlugins] OpenFlight-Plugin - How to store individual object in seperate geode?
Hi Brede, Just some updates. I have glanced through the codes for the openflight plugin, and not sure if this is correct. Using the preserveObject option, the openflight Object record will be stored in a osg::Group node. All the faces will be stored as osg::Geode under the respective group node. Is this correct? By iterating through the groups, and collecting the geodes in each group, I managed to retrieve the land from my openflight terrain file. However, the buildings are still being grouped based on the texture (i.e. building with same texture are stored under the same group node). Is this how the openflight structure organize the record? Is it feasible to seperate these buildings? Thanks in advanced. -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=9778#9778 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] [osgPlugins] OpenFlight-Plugin - How to store individual object in seperate geode?
Bulkhead, If you use osgconv to compare your OpenFlight structure with the OSG structure (.osg) don't forget to set the environment variable OSG_OPTIMIZER=OFF. With the preserve??? reader options they should be almost identical. The reason OpenFlight faces becomes Geode+Drawable is because a drawable can't store flight comments and billboard information. If I remember correct a long time ago the drawables couldn't even store the face id because the drawables didn't have the name attribute. Brede On Mon, Apr 6, 2009 at 11:59 AM, Bulkhead wgy...@gmail.com wrote: Hi Brede, Just some updates. I have glanced through the codes for the openflight plugin, and not sure if this is correct. Using the preserveObject option, the openflight Object record will be stored in a osg::Group node. All the faces will be stored as osg::Geode under the respective group node. Is this correct? By iterating through the groups, and collecting the geodes in each group, I managed to retrieve the land from my openflight terrain file. However, the buildings are still being grouped based on the texture (i.e. building with same texture are stored under the same group node). Is this how the openflight structure organize the record? Is it feasible to seperate these buildings? Thanks in advanced. -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=9778#9778 ___ 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] [osgPlugins] OpenFlight-Plugin - How to store individual object in seperate geode?
Hi, I'm new to the modelling world, and any help/advice is very much appreciated. I'm using osg openflight plugin to load an flt terrain file. The terrain consists of a piece of land, and many buildings. What I am trying to achieve is loading the entire piece of land as one geode, and every building as individual geode. After I have loaded the terrain into osg format, I noticed that the osgUtil::Optimizer will group some of the buildings that share the same texture into a single geode. In order not to mess up with the original plugin codes (for ease of upgrading in the future), I disable the optimization by passing preserveFace option to the osgDB::readNodeFile() API, and invoke the optimizer in my loader codes. I have tried with different combinations of optimizer options, but couldn't find a combination that can produce the desired result :( Here is the list of options that I have tried with: SHARE_DUPLICATE_STATE STATIC_OBJECT_DETECTION MERGE_GEOMETRY (disabling this will blow my loader [Embarassed] ) MERGE_GEODES REMOVE_REDUNDANT_NODES FLATTEN_STATIC_TRANSFORMS_DUPLICATING_SHARED_SUBGRAPHS SPATIALIZE_GROUPS COPY_SHARED_NODES TESSELLATE_GEOMETRY Any suggestions? Am I in the correct direction? Or should I develop a visitor for this purpose? Thank you in advanced :) . -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=9701#9701 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] [osgPlugins] OpenFlight-Plugin - How to store individual object in seperate geode?
Hi, You can disable optimization of nodes with Optimizer::setPermissibleOptimizationsForObject(const osg::Object* object, unsigned int options) Regards, Brede On Fri, Apr 3, 2009 at 11:06 AM, Bulkhead wgy...@gmail.com wrote: Hi, I'm new to the modelling world, and any help/advice is very much appreciated. I'm using osg openflight plugin to load an flt terrain file. The terrain consists of a piece of land, and many buildings. What I am trying to achieve is loading the entire piece of land as one geode, and every building as individual geode. After I have loaded the terrain into osg format, I noticed that the osgUtil::Optimizer will group some of the buildings that share the same texture into a single geode. In order not to mess up with the original plugin codes (for ease of upgrading in the future), I disable the optimization by passing preserveFace option to the osgDB::readNodeFile() API, and invoke the optimizer in my loader codes. I have tried with different combinations of optimizer options, but couldn't find a combination that can produce the desired result :( Here is the list of options that I have tried with: SHARE_DUPLICATE_STATE STATIC_OBJECT_DETECTION MERGE_GEOMETRY (disabling this will blow my loader [Embarassed] ) MERGE_GEODES REMOVE_REDUNDANT_NODES FLATTEN_STATIC_TRANSFORMS_DUPLICATING_SHARED_SUBGRAPHS SPATIALIZE_GROUPS COPY_SHARED_NODES TESSELLATE_GEOMETRY Any suggestions? Am I in the correct direction? Or should I develop a visitor for this purpose? Thank you in advanced :) . -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=9701#9701 ___ 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
