FGFS-4.1/OpenSceneGraph
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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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47
src/osg/Drawable.cpp
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@@ -312,14 +312,53 @@ void Drawable::setStateSet(osg::StateSet* stateset)
// do nothing if nothing changed.
if (_stateset==stateset) return;
// track whether we need to account for the need to do a update or event traversal.
int delta_update = 0;
int delta_event = 0;
// remove this node from the current statesets parent list
if (_stateset.valid()) _stateset->removeParent(this);
if (_stateset.valid())
{
_stateset->removeParent(this);
if (_stateset->requiresUpdateTraversal()) --delta_update;
if (_stateset->requiresEventTraversal()) --delta_event;
}
// set the stateset.
_stateset = stateset;
// add this node to the new stateset to the parent list.
if (_stateset.valid()) _stateset->addParent(this);
if (_stateset.valid())
{
_stateset->addParent(this);
if (_stateset->requiresUpdateTraversal()) ++delta_update;
if (_stateset->requiresEventTraversal()) ++delta_event;
}
// only inform parents if change occurs and drawable doesn't already have an update callback
if (delta_update!=0 && !_updateCallback)
{
for(ParentList::iterator itr=_parents.begin();
itr!=_parents.end();
++itr)
{
(*itr)->setNumChildrenRequiringUpdateTraversal((*itr)->getNumChildrenRequiringUpdateTraversal()+delta_update);
}
}
// only inform parents if change occurs and drawable doesn't already have an event callback
if (delta_event!=0 && !_eventCallback)
{
for(ParentList::iterator itr=_parents.begin();
itr!=_parents.end();
++itr)
{
(*itr)->setNumChildrenRequiringEventTraversal((*itr)->getNumChildrenRequiringEventTraversal()+delta_event);
}
}
}
osg::StateSet* Drawable::getOrCreateStateSet()
@@ -502,7 +541,7 @@ void Drawable::setUpdateCallback(UpdateCallback* ac)
_updateCallback = ac;
if (delta!=0)
if (delta!=0 && !(_stateset.valid() && _stateset->requiresUpdateTraversal()))
{
for(ParentList::iterator itr=_parents.begin();
itr!=_parents.end();
@@ -523,7 +562,7 @@ void Drawable::setEventCallback(EventCallback* ac)
_eventCallback = ac;
if (delta!=0)
if (delta!=0 && !(_stateset.valid() && _stateset->requiresEventTraversal()))
{
for(ParentList::iterator itr=_parents.begin();
itr!=_parents.end();