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Futher work on adding event and update callbacks to StateSet, Uniform and StateAttributes

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This commit is contained in:
Robert Osfield
2005-04-25 11:05:02 +00:00
parent 193c83cb9c
commit bc83e63bb4
8 changed files with 220 additions and 30 deletions
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28
include/osg/StateSet
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@@ -392,7 +392,7 @@ class OSG_EXPORT StateSet : public Object
META_Object(osg,Callback);
/** do customized callback code.*/
virtual void operator() (NodeVisitor*, StateSet*) {}
virtual void operator() (StateSet*, NodeVisitor*) {}
};
/** Set the Update Callback which allows users to attach customize the updating of an object during the update traversal.*/
@@ -404,9 +404,15 @@ class OSG_EXPORT StateSet : public Object
/** Get the const Update Callback.*/
const Callback* getUpdateCallback() const { return _updateCallback.get(); }
/** Return whether this StateSet has update callbacks associated with it, and therefore must be traversed.*/
bool requiresUpdateTraversal() const { return _updateCallback.valid() || getNumChildrenRequiringUpdateTraversal()!=0; }
/** Get the number of Objects of this StateSet which require Update traversal,
* since they have an Update Callback attached to them or their children.*/
inline unsigned int getNumObjectsRequiringUpdateTraversal() const { return _numObjectsRequiringUpdateTraversal; }
inline unsigned int getNumChildrenRequiringUpdateTraversal() const { return _numChildrenRequiringUpdateTraversal; }
/** Run the update callbacks attached directly to this StateSet or to its children.*/
void runUpdateCallbacks(osg::NodeVisitor* nv);
/** Set the Event Callback which allows users to attach customize the updating of an object during the event traversal.*/
@@ -418,9 +424,15 @@ class OSG_EXPORT StateSet : public Object
/** Get the const Event Callback.*/
const Callback* getEventCallback() const { return _eventCallback.get(); }
/** Return whether this StateSet has event callbacks associated with it, and therefore must be traversed.*/
bool requiresEventTraversal() const { return _eventCallback.valid() || getNumChildrenRequiringEventTraversal()!=0; }
/** Get the number of Objects of this StateSet which require Event traversal,
* since they have an Eevnt Callback attached to them or their children.*/
inline unsigned int getNumObjectsRequiringEventTraversal() const { return _numObjectsRequiringEventTraversal; }
inline unsigned int getNumChildrenRequiringEventTraversal() const { return _numChildrenRequiringEventTraversal; }
/** Run the event callbacks attached directly to this StateSet or to its children.*/
void runEventCallbacks(osg::NodeVisitor* nv);
/** call compile on all StateAttributes contained within this StateSet.*/
@@ -483,11 +495,13 @@ class OSG_EXPORT StateSet : public Object
int _binNum;
std::string _binName;
ref_ptr<Callback> _updateCallback;
unsigned int _numObjectsRequiringUpdateTraversal;
ref_ptr<Callback> _updateCallback;
unsigned int _numChildrenRequiringUpdateTraversal;
void setNumChildrenRequiringUpdateTraversal(unsigned int num);
ref_ptr<Callback> _eventCallback;
unsigned int _numObjectsRequiringEventTraversal;
ref_ptr<Callback> _eventCallback;
unsigned int _numChildrenRequiringEventTraversal;
void setNumChildrenRequiringEventTraversal(unsigned int num);
};