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#ifndef _OPCAMERAZOOMBOX_H
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#define _OPCAMERAZOOMBOX_H
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#include "OpConstructRectangle.h"
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#include "XJTrackballManipulator.h"
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namespace OSGView
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{
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//interface of the HOpConstruction class
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// draws a 2D box in view port based on pointer first position and last position
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// Derived classes access the Points for the rectangle in HBaseOperator members
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// m_ptFirst and m_ptLast; Points are stored in window space.
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class OpCameraZoomBox : public OpConstructRectangle
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{
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public:
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OpCameraZoomBox();
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OpCameraZoomBox(osgViewer::Viewer* pViewer);
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virtual ~OpCameraZoomBox();
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/*!
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\returns A pointer to a character string denoting the name of the operator which is 'Construct Rectangle'.
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*/
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virtual const char * GetName() {return "OpCameraZoomBox";}
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/*!
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OnLButtonUp finalizes the size of the rectangle and cleans up.
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\param hevent An GUIEventAdapter object containing information about the current event.
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\return An #HOperatorReturn indicating the status of the event.
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*/
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virtual int OnLButtonUp(const osgGA::GUIEventAdapter& ea, osgGA::GUIActionAdapter& aa);
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// transfer manipulator to this class
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void SetManipulator(CXJManipulator* mp) {m_keyswitchManipulator = mp;}
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protected:
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//two zoomBox mechanism
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//1<><31>Intersection with model
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void ZoomBoxWithModel();
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//2<><32> zoom with scene
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void ZoomBoxWithScene();
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protected:
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CXJManipulator* m_keyswitchManipulator;
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};
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} //end namespace
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#endif
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