FGFS-4.1/OpenSceneGraph
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Various improvements to database paing.

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This commit is contained in:
Robert Osfield
2004-09-21 17:26:08 +00:00
parent eea9ddccf5
commit 0d884d66eb
14 changed files with 330 additions and 77 deletions
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10
src/osg/PagedLOD.cpp
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@@ -25,6 +25,7 @@ PagedLOD::PerRangeData& PagedLOD::PerRangeData::operator = (const PerRangeData&
PagedLOD::PagedLOD()
{
_frameNumberOfLastTraversal = 0;
_centerMode = USER_DEFINED_CENTER;
_radius = -1;
_numChildrenThatCannotBeExpired = 0;
@@ -32,6 +33,7 @@ PagedLOD::PagedLOD()
PagedLOD::PagedLOD(const PagedLOD& plod,const CopyOp& copyop):
LOD(plod,copyop),
_frameNumberOfLastTraversal(plod._frameNumberOfLastTraversal),
_numChildrenThatCannotBeExpired(plod._numChildrenThatCannotBeExpired),
_perRangeDataList(plod._perRangeDataList)
{
@@ -40,6 +42,9 @@ PagedLOD::PagedLOD(const PagedLOD& plod,const CopyOp& copyop):
void PagedLOD::traverse(NodeVisitor& nv)
{
// set the frame number of the traversal so that external nodes can find out how active this
// node is.
if (nv.getFrameStamp()) setFrameNumberOfLastTraversal(nv.getFrameStamp()->getFrameNumber());
double timeStamp = nv.getFrameStamp()?nv.getFrameStamp()->getReferenceTime():0.0;
bool updateTimeStamp = nv.getVisitorType()==osg::NodeVisitor::CULL_VISITOR;
@@ -179,7 +184,7 @@ bool PagedLOD::removeChild( Node *child )
return Group::removeChild(child);
}
void PagedLOD::removeExpiredChildren(double expiryTime,NodeList& removedChildren)
bool PagedLOD::removeExpiredChildren(double expiryTime,NodeList& removedChildren)
{
if (_children.size()>_numChildrenThatCannotBeExpired)
{
@@ -187,7 +192,8 @@ void PagedLOD::removeExpiredChildren(double expiryTime,NodeList& removedChildren
{
osg::Node* nodeToRemove = _children[_children.size()-1].get();
removedChildren.push_back(nodeToRemove);
Group::removeChild(nodeToRemove);
return Group::removeChild(nodeToRemove);
}
}
return false;
}