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;
}
}
}
...
}
"AccousticPropertyData.h" basically contains definitions of the classes
"RoomData" and "SurfaceData".
Code:
class AcousticPropertyData : public Referenced
{
public:
AcousticPropertyData(AcousticDataType type): m_AcousticDataType(type),
Referenced()
{
m_Version = 3;
m_IsActive = true;
}
virtual ~AcousticPropertyData() {}
int m_Version;
bool m_IsActive;
AcousticDataType m_AcousticDataType;
};
class SurfaceData : public AcousticPropertyData
{
public:
SurfaceData(): AcousticPropertyData(kSurfaceData)
{
m_ReflectorId = 0;
m_PartitionId = 0;
m_FlankingBoost = 0;
}
const SurfaceData& operator=(const SurfaceData& src)
{
m_ReflectorId = src.m_ReflectorId;
m_PartitionId = src.m_PartitionId;
m_FlankingBoost = src.m_FlankingBoost;
m_IsActive = src.m_IsActive;
return *this;
}
long m_ReflectorId;
long m_PartitionId;
double m_FlankingBoost;
};
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=48887#48887
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