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Added osg::PagedLOD and osgProducer::DatabasePager class, and linked up osgProducer::Viewer

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to manage the pager.
This commit is contained in:
Robert Osfield
2003-07-08 14:44:00 +00:00
parent 9239173019
commit c2eabe1d4b
21 changed files with 810 additions and 59 deletions
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41
include/osg/NodeVisitor
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@@ -31,6 +31,7 @@ class MatrixTransform;
class PositionAttitudeTransform;
class Projection;
class LOD;
class PagedLOD;
class Switch;
class Impostor;
class ClearNode;
@@ -238,25 +239,49 @@ class SG_EXPORT NodeVisitor : public virtual Referenced
virtual void apply(Switch& node) { apply((Group&)node); }
virtual void apply(Sequence& node) { apply((Group&)node); }
virtual void apply(LOD& node) { apply((Group&)node); }
virtual void apply(PagedLOD& node) { apply((LOD&)node); }
virtual void apply(Impostor& node) { apply((LOD&)node); }
virtual void apply(ClearNode& node) { apply((Group&)node); }
virtual void apply(OccluderNode& node) { apply((Group&)node); }
/** callback for managing database paging, such as generated by PagedLOD nodes.*/
class DatabaseRequestHandler : public osg::Referenced
{
public:
virtual void requestNodeFile(const std::string& fileName,osg::Group* group) = 0;
protected:
virtual ~DatabaseRequestHandler() {}
};
/** Set the handler for database requests.*/
void setDatabaseRequestHandler(DatabaseRequestHandler* handler) { _databaseRequestHandler = handler; }
/** Get the handler for database requests.*/
DatabaseRequestHandler* getDatabaseRequestHandler() { return _databaseRequestHandler.get(); }
/** Get the const handler for database requests.*/
const DatabaseRequestHandler* getDatabaseRequestHandler() const { return _databaseRequestHandler.get(); }
protected:
VisitorType _visitorType;
int _traversalNumber;
VisitorType _visitorType;
int _traversalNumber;
ref_ptr<FrameStamp> _frameStamp;
ref_ptr<FrameStamp> _frameStamp;
TraversalMode _traversalMode;
Node::NodeMask _traversalMask;
Node::NodeMask _nodeMaskOverride;
TraversalMode _traversalMode;
Node::NodeMask _traversalMask;
Node::NodeMask _nodeMaskOverride;
NodePath _nodePath;
NodePath _nodePath;
ref_ptr<Referenced> _userData;
ref_ptr<Referenced> _userData;
ref_ptr<DatabaseRequestHandler> _databaseRequestHandler;
};