OpenSceneGraph/include/osg/NodeCallback

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#ifndef OSG_NODECALLBACK
#define OSG_NODECALLBACK 1
#include <osg/Referenced>
namespace osg {
class Node;
class NodeVisitor;
class SG_EXPORT NodeCallback : public Referenced {
public :
/** The range of values which can be accumulated by the NodeVisitor. */
enum Requirements
{
NO_REQUIREMENTS = 0x0,
REQUIRES_TRAVERSAL = 0x1,
REQUIRES_PARENT_PATH = 0x2,
REQUIRES_ACCUMULATED_MATRIX = 0x4,
REQUIRES_ACCUMULATED_INVERSE = 0x8,
};
NodeCallback(const Requirements ncr=NO_REQUIREMENTS):_requirements(ncr) {}
virtual ~NodeCallback() {}
/** Set what values from traversal are required by this NodeCallback.*/
inline void setRequirements(const Requirements ncr) { _requirements=ncr; }
/** Get what values from traversal are required by this NodeCallback.*/
inline const Requirements getRequirements() const { return _requirements; }
/** Callback method call by the NodeVisitor when visiting a node.*/
virtual void operator()(Node*, NodeVisitor*) {}
public:
Requirements _requirements;
};
}; // namespace
#endif