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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32
src/osg/Node.cpp
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@@ -91,14 +91,38 @@ void Node::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;
}
if (delta_update!=0)
{
setNumChildrenRequiringUpdateTraversal(getNumChildrenRequiringUpdateTraversal()+delta_update);
}
if (delta_event!=0)
{
setNumChildrenRequiringEventTraversal(getNumChildrenRequiringEventTraversal()+delta_event);
}
}
osg::StateSet* Node::getOrCreateStateSet()
@@ -113,7 +137,7 @@ void Node::setUpdateCallback(NodeCallback* nc)
// if no changes just return.
if (_updateCallback==nc) return;
// app callback has been changed, will need to update
// updated callback has been changed, will need to update
// both _updateCallback and possibly the numChildrenRequiringAppTraversal
// if the number of callbacks changes.
@@ -191,7 +215,7 @@ void Node::setEventCallback(NodeCallback* nc)
// if no changes just return.
if (_eventCallback==nc) return;
// app callback has been changed, will need to Event
// event callback has been changed, will need to Event
// both _EventCallback and possibly the numChildrenRequiringAppTraversal
// if the number of callbacks changes.