81f553aaee
but getting there.
o First cut of osgcluster demo. Very simple beginings. Alas
I only one PC here so I can't test it in its current guise.
o New support for NodeCallbacks, via AppCallback attached to
osg::Node's, and a default osgUtil::AppVisitor which calls them on
each frame.
o Support for traversal masks in osg::NodeVisitor, osg::Node
which allows nodes to be switched on or off via a bit mask.
o Suppport for traversal number (frame number) and reference time
into osg::NodeVisitor to handle syncronization of app and cull
traversals. This also assist clustering as traversal number
master to slaves.
68 lines
1.9 KiB
Plaintext
68 lines
1.9 KiB
Plaintext
#ifndef OSGUTIL_APPVISITOR
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#define OSGUTIL_APPVISITOR 1
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#include <osg/NodeVisitor>
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#include <osg/Node>
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#include <osg/Geode>
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#include <osg/Billboard>
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#include <osg/LOD>
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#include <osg/Switch>
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#include <osg/LightSource>
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#include <osg/Transform>
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#include <osg/Impostor>
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#include <osgUtil/Export>
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namespace osgUtil {
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/**
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* Basic AppVisitor implementation for animating a scene.
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* This visitor traverses the scene graph, call each nodes appCallback if
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* it exists.
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*/
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class OSGUTIL_EXPORT AppVisitor : public osg::NodeVisitor
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{
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public:
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AppVisitor();
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virtual ~AppVisitor();
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virtual void reset();
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virtual void apply(osg::Node& node) { handle_callbacks(node); }
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virtual void apply(osg::Geode& node) { handle_callbacks(node); }
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virtual void apply(osg::Billboard& node) { handle_callbacks(node); }
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virtual void apply(osg::LightSource& node){ handle_callbacks(node); }
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virtual void apply(osg::Group& node) { handle_callbacks(node); }
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virtual void apply(osg::Transform& node) { handle_callbacks(node); }
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virtual void apply(osg::Switch& node) { handle_callbacks(node); }
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virtual void apply(osg::LOD& node) { handle_callbacks(node); }
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virtual void apply(osg::Impostor& node) { handle_callbacks(node); }
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protected:
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/** prevent unwanted copy construction.*/
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AppVisitor(const AppVisitor&):osg::NodeVisitor() {}
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/** prevent unwanted copy operator.*/
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AppVisitor& operator = (const AppVisitor&) { return *this; }
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inline void handle_callbacks(osg::Node& node)
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{
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osg::NodeCallback* callback = node.getAppCallback();
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if (callback) (*callback)(&node,this);
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else if (node.getNumChildrenRequiringAppTraversal()>0) traverse(node);
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}
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};
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};
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#endif
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