hi,
tim recently noticed the database pager was repeatedly loading and unloading
the same objects. he also tracked down the problem to missing bounding sphere
information in osgDB::PagedLOD. this is a simplicistic approach to fix this:
SGPagedLOD will now remember whatever value it sees for getBound() after
loading a child. this patch will make database pager run much calmer.
the second patch (for fg) increases the time before invisible geometry (i.e.
geometry not inside the view frustrum) gets deleted. default was 10 seconds
which i am increasing to 2 minutes.
thanks tim,
-till
diff --git a/simgear/scene/model/SGPagedLOD.cxx b/simgear/scene/model/SGPagedLOD.cxx
index ee68b49..bdd19c9 100644
--- a/simgear/scene/model/SGPagedLOD.cxx
+++ b/simgear/scene/model/SGPagedLOD.cxx
@@ -47,6 +47,8 @@ bool SGPagedLOD::addChild(osg::Node *child)
if (!PagedLOD::addChild(child))
return false;
+ setRadius(getBound().radius());
+ setCenter(getBound().center());
// if the model was an .xml-file it will have UserData set
osg::ref_ptr<SGModelData> d = dynamic_cast<SGModelData*>(child->getUserData());
if (d.valid())
diff --git a/src/Scenery/SceneryPager.cxx b/src/Scenery/SceneryPager.cxx
index 6da6d4b..c72ffe4 100644
--- a/src/Scenery/SceneryPager.cxx
+++ b/src/Scenery/SceneryPager.cxx
@@ -29,6 +29,7 @@ SceneryPager::SceneryPager()
{
_pagerRequests.reserve(48);
_deleteRequests.reserve(16);
+ setExpiryDelay(120.0);
}
SceneryPager::SceneryPager(const SceneryPager& rhs) :
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