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73 lines
2.5 KiB
C
73 lines
2.5 KiB
C
1 month ago
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#ifndef _OPCONSTRUCTRECTANGLE_H
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#define _OPCONSTRUCTRECTANGLE_H
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#include "OBaseOperator.h"
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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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namespace OSGView
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{
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class OpConstructRectangle : public OBaseOperator
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{
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public:
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OpConstructRectangle();
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OpConstructRectangle(osgViewer::Viewer* pViewer);
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virtual ~OpConstructRectangle();
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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 "OpConstructRectangle";}
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/*!
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OnLButtonDown records the first mouse position and initiates the rectangle-drawing mechanism.
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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 OnLButtonDown(const osgGA::GUIEventAdapter& ea, osgGA::GUIActionAdapter& aa);
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/*!
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OnLButtonDownAndMove draws a rubberbanded line from the first point in the rectangle to the current mouse position.
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Note that the basic drawing work is done by HUtility::InsertRectangle, while OnLButtonDownAndMove keeps track of
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the current points and draws the rubberband centroid.
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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 OnLButtonDownAndMove(const osgGA::GUIEventAdapter& ea, osgGA::GUIActionAdapter& aa);
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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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osg::Vec3 GetRectangleStartPt() const {return m_ptRectangle[0];}
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osg::Vec3 GetRectangleEndPt() const {return m_ptRectangle[1];}
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bool GetRectangleExistFlag() {return m_bRectangleExists;}
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protected:
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virtual bool handle(const osgGA::GUIEventAdapter& ea, osgGA::GUIActionAdapter& aa);
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protected:
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bool m_bRectangleExists; /*!< The boolean indicating whether the rectangle exists. */
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osg::Vec3 m_ptRectangle[2]; /*!< The first and last points in the rectangle stored in window space. */
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osg::ref_ptr<osg::Group> m_ConstructLayer;
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};
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}
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#endif
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