HandlerBase.h

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#pragma once
 
#include <osg/Geode>
#include <osg/Switch>
 
namespace osg
{
    class Node;
    class Switch;
    class Drawable;
}
 
#include <osg/Vec3d>
 
#include <list>
 
class HandlerBase;
 
class HandlerNotifier
{
public:
    HandlerNotifier() {};
    virtual ~HandlerNotifier() {};
 
    virtual void handlerInteraction(HandlerBase *handler) = 0;
};
 
class HandlerBase
{
public:
    HandlerBase() : selectorDrawable(nullptr) {};
    virtual ~HandlerBase() {};
 
    virtual osg::Node *getNode(void) = 0;
 
    virtual void mouseOver(bool flag) = 0;
 
    void createSelectLine(osg::Switch *node, std::list<osg::Vec3d> &pointList, bool visible = false);
 
    osg::Drawable *getSelectorDrawable(void) { return selectorDrawable; }
 
    virtual void setInteraction(int intersectionIndex, double intersectionRatio) = 0;
    virtual void setInteractionReference(int intersectionIndex, double intersectionRatio) = 0;
 
    void beginInteraction(void);
    void endInteraction(void);
 
    void addNotifier(HandlerNotifier *notifier);
    void removeNotifier(HandlerNotifier *notifier);
 
    void reportInteraction(void);
 
private:
    osg::Drawable *selectorDrawable;
    osg::ref_ptr<osg::Geode> selectLine;
    osg::ref_ptr<osg::Switch> switchNode;
 
    std::list<HandlerNotifier *> notifiers;
};