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#pragma once
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#include <osgViewer/ViewerEventHandlers>
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#include <osg/MatrixTransform>
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#include "../XJOSGObject/XJOSGObject.h"
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//对象高亮颜色
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const osg::Vec4 HIGHTLIGHT_COLOR = osg::Vec4(0.8, 0.0, 0.0, 1.0);
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const osg::Vec4 PICKPOINT_COLOR = osg::Vec4(0.0, 0.0, 1.0, 1.0);
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// PickHandler，用于实现用户选择的GUIEventHandler 派生类。
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//现在这个类是没用的
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class CXJOSGPickHandler : public osgGA::GUIEventHandler
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{
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public:
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CXJOSGPickHandler();
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enum pickMode
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{
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PICK_OBJECT = 0,
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PICK_POINT = 1
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};
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bool handle( const osgGA::GUIEventAdapter& ea, osgGA::GUIActionAdapter& aa );
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// 执行用户选择的操作。
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bool pick( const double x, const double y, osgViewer::Viewer* viewer );
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//设置选择对象的类型（点还是对象）
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void SetPickMode(int pickType) {m_pickType = pickType;}
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//获得选中对象上的点
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osg::Vec3 GetPickPoint(){return m_pickPoint;}
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//判断是否选中对象
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bool GetPickResult(){return m_pickResult;}
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//获得选中的显示对象
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CXJOSGObject * GetPickObject(){return m_pickObject;}
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protected:
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// 保存鼠标按下和移动时的XY 坐标。
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float _mX,_mY;
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bool m_pickResult;
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osg::Vec3 m_pickPoint;
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CXJOSGObject* m_pickObject;
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int m_pickType;
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};
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/**键盘响应事件，用于处理键盘按下时触发的命令*/
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class PromptionHandler : public osgGA::GUIEventHandler
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{
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public:
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PromptionHandler(osg::ApplicationUsage* au = 0);
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enum HUDCameraType
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{
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LEFT_UP = 0,
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RIGHT_UP = 1,
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LEFT_DOWN = 2
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};
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//用于存储提示信息的容器
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typedef std::vector<std::string> PromptionList;
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void setKeyEventTogglesOnScreenHelp(int key) { _keyEventTogglesOnScreenHelp = key; }
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int getKeyEventTogglesOnScreenHelp() const { return _keyEventTogglesOnScreenHelp; }
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void reset();
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bool handle(const osgGA::GUIEventAdapter& ea, osgGA::GUIActionAdapter& aa);
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void setHUDTextNode(osg::Node* node) {_HUDNode = node;}
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protected:
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int _keyEventTogglesOnScreenHelp;
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bool _promptEnabled;
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bool _initialized;
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osg::Node* _HUDNode;
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};
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