Hi Tamar,
While the .osg ASCI format is officially deprecated I don't have any
plans to remove it's support from the OSG right now so you are safe,
and even if I did remove it from the core OSG you'll be able to use
the .osg support via an external plugin/NodeKit.
The replacement for .osg is the new generic osgDB serializers, these
make it much easier to extend the serialization with support for you
own custom classes. The src/osgWrappers/serializers/* modules all
contain plenty of examples of how one wraps classes to support the new
serialization - just pick an OSG class and look it up in appropriate
serialize directory to see how it's done. The advanage of the new
serializers is they automatically support ascii, XML and binary
versions of the file format.
Robert.
On 16 July 2012 08:19, Tamer El Nashar <teem...@gmail.com> wrote:
> Hi,
>
> I am using an API that depends on osg 2.8.1, and have been asked to finally
> attempt to upgrade to the latest development release (3.1.1).
>
> The SDK currently makes a few customization to osg, mainly adding user data
> to osgPlugins::osg::Node. The following 2 functions are changed in the file:
> $OSG/src/osgPlugins/osg/Node.cpp
>
>
> Code:
>
> #include "osg/AcousticPropertyData.h"
>
> bool Node_readLocalData(Object& obj, Input& fr)
> {
> ...
>
> // change user data to read in acoustic properties
> if (fr.matchSequence("user_data {"))
> {
> int entry = fr[0].getNoNestedBrackets();
> fr += 2;
>
> while (!fr.eof() && fr[0].getNoNestedBrackets() > entry)
> {
> std::string str = fr[0].getStr();
> if (str.length()>0)
> {
> std::string type = str.substr(0,
> str.find_first_of(' '));
>
> const char *cStr = str.c_str();
>
> if (type == "RoomData")
> {
> RoomData* roomData = new RoomData();
>
> char type[256];
> int isActive;
>
> sscanf(cStr, "%s %lf %lf %lf %lf %d
> %ld %ld %lf %s",
> &(type),
> &(roomData->m_WetMix),
> &(roomData->m_Diffusion),
> &(roomData->m_T60Low),
> &(roomData->m_T60High),
> &(isActive),
>
> &(roomData->m_DefaultPartitionId),
>
> &(roomData->m_DefaultReflectorId),
>
> &(roomData->m_DefaultFlankingBoost),
> &(roomData->m_RoomID));
>
> roomData->m_IsActive = (isActive !=
> 0);
> node.setUserData(roomData);
> }
> else if (type == "SurfaceData")
> {
> SurfaceData* surfaceData = new
> SurfaceData();
>
> char type[256];
> int isActive;
>
> sscanf(cStr, "%s %lf %lf %lf %lf %d",
> &(type),
> &(surfaceData->m_ReflectorId),
> &(surfaceData->m_PartitionId),
>
> &(surfaceData->m_FlankingBoost),
> &(isActive));
>
> surfaceData->m_IsActive = (isActive
> != 0);
> node.setUserData(surfaceData);
> }
>
> ++fr;
> }
> }
> iteratorAdvanced = true;
> }
> ...
> }
>
> bool Node_writeLocalData(const Object& obj, Output& fw)
> {
> ...
> // change user data to become acoustic property
> if (!strcmp(node.className(), "Geode") || !strcmp(node.className(),
> "Group"))
> {
> const Referenced* _userData = NULL;
> _userData = node.getUserData();
> if (_userData)
> {
> AcousticPropertyData* object = NULL;
> object =
> dynamic_cast<AcousticPropertyData*>(const_cast< Referenced* >(_userData));
>
> if (object)
> {
> fw.indent() << "user_data {"<< std::endl;
> fw.moveIn();
>
> char tempCStr[2048];
>
> if (object->m_AcousticDataType == kRoomData)
> {
> RoomData* roomData =
> dynamic_cast<RoomData*>(object);
>
> strncpy(roomData->m_RoomID,
> node.getName().c_str(), sizeof(roomData->m_RoomID));
>
> sprintf(tempCStr, "%s %lf %lf %lf %lf
> %d %d %d %lf %s",
> "RoomData",
> roomData->m_WetMix,
> roomData->m_Diffusion,
> roomData->m_T60Low,
> roomData->m_T60High,
> (roomData->m_IsActive ? 1 :
> 0),
>
> roomData->m_DefaultPartitionId,
>
> roomData->m_DefaultReflectorId,
>
> roomData->m_DefaultFlankingBoost,
> roomData->m_RoomID);
> }
> else if (object->m_AcousticDataType ==
> kSurfaceData)
> {
> SurfaceData* surfaceData =
> dynamic_cast<SurfaceData*>(object);
>
> sprintf(tempCStr, "%s %ld %ld %lf %d",
> "SurfaceData",
> surfaceData->m_PartitionId,
> surfaceData->m_ReflectorId,
> surfaceData->m_FlankingBoost,
> (surfaceData->m_IsActive ? 1
> : 0));
> }
>
> std::string str;
> str.assign(tempCStr);
> fw.indent() << fw.wrapString(str) <<
> std::endl;
> fw.moveOut();
> fw.indent() << "}"<< std::endl;
> }
> }
> }
> ...
> }
>
>
>
>
>
> I attached "AccousticPropertyData.h" which basically contains definitions of
> the classes "RoomData" and "SurfaceData".
>
> The problem is that in 3.1.1 osgPlugins osg has been deprecated. So using the
> above code wouldn't be possible without using deprecated code, which I would
> rather not do.
>
> My question is, how can I add user data to osg node? Preferably without
> making any changes to osg, but rather through my app/sdk. Any sample that
> does that?
>
> Thank you!
>
> Cheers,
> Tamer
>
> ------------------
> Read this topic online here:
> http://forum.openscenegraph.org/viewtopic.php?p=48855#48855
>
>
>
>
> Attachments:
> http://forum.openscenegraph.org//files/acousticpropertydata_209.h
>
>
> _______________________________________________
> osg-users mailing list
> osg-users@lists.openscenegraph.org
> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
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