Hi,
I want to implement a custom node with a custom nodecallback by serializer.
I have read a chapter of serializer in OpenSceneGraph 3.0 Beginner's Guide and
this webpage -
http://trac.openscenegraph.org/projects/osg//wiki/Support/KnowledgeBase/SerializationSupport
I know how to implement a custom node now.
But I am somewhat confused about how to implement custom node with a custom
nodecallback.
I can do it with Custom Serializers now.
Code:
namespace test {
class CustomNode : public osg::Group
{
public:
CustomNode() : osg::Group(), _exampleID(0) {}
CustomNode(const CustomNode& copy,const osg::CopyOp&
copyop=osg::CopyOp::SHALLOW_COPY)
: osg::Group(copy, copyop), _exampleID(copy._exampleID)
{}
META_Node(test, CustomNode)
void setExampleID( unsigned int id ) { _exampleID = id;
}
unsigned int getExampleID() const { return _exampleID; }
protected:
unsigned int _exampleID;
};
}
class CustomNodeCallBack : public osg::NodeCallback
{
virtual void operator()( osg::Node* node, osg::NodeVisitor* nv )
{
printf ("custom node call back.\n");
}
};
static bool checkCustomCallBack( const test::CustomNode& node )
{
return true;
}
static bool writeCustomCallBack( osgDB::OutputStream& os, const
test::CustomNode& node )
{
return true;
}
static bool readCustomCallBack( osgDB::InputStream& is, test::CustomNode& node )
{
node.addUpdateCallback( new CustomNodeCallBack );
return true;
}
REGISTER_OBJECT_WRAPPER( CustomNode_Wrapper,
new test::CustomNode,
test::CustomNode,
"osg::Object osg::Node
osg::Group test::CustomNode" )
{
ADD_UINT_SERIALIZER( ExampleID, 0 );
ADD_USER_SERIALIZER( CustomCallBack );
}
I think maybe I can also do this without Custom Serializers.
Which means I think I can implement a node serializer and a nodecallback
serializer, then add the callback to the node.
the code may look like this
Code:
namespace test {
class CustomNodeCallBack : public osg::NodeCallback
{
public:
......
META_NodeCallBack(test, CustomNode)
......
};
}
REGISTER_OBJECT_WRAPPER( CustomNodeCallBack_Wrapper,
new test::CustomNodeCallBack,
test::CustomNodeCallBack,
"osg::Object osg::NodeCallBack
test::CustomNodeCallBack" )
{
......
}
namespace test {
class CustomNode : public osg::Group
{
public:
......
META_Node(test, CustomNode)
......
};
}
REGISTER_OBJECT_WRAPPER( CustomNode_Wrapper,
new test::CustomNode,
test::CustomNode,
"osg::Object osg::Node
osg::Group test::CustomNode" )
{
ADD_OBJECT_SERIALIZER( UpdateCallback, test::CustomNodeCallBack , NULL)
}
But I do not know how to implement a nodecallback serializer. There is
META_Node for node serializer, but there is nothing named META_NodeCallBack.
I want to know how to implement a nodecallback serializer.
Or If there are other ways to make a custom node with a custom nodecallback.
Thank you!
Cheers,
Xia[/code]
------------------
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=63708#63708
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