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83 lines
2.7 KiB
83 lines
2.7 KiB
6 years ago
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/***************************************************************
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* Name: CurveShape.h
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* Purpose: Defines curve shape class
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* Author: Michal Bližňák (michal.bliznak@tiscali.cz)
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* Created: 2007-07-22
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* Copyright: Michal Bližňák
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* License: wxWidgets license (www.wxwidgets.org)
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* Notes:
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**************************************************************/
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#ifndef _WXSFCURVESHAPE_H
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#define _WXSFCURVESHAPE_H
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#include <wx/wxsf/LineShape.h>
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/*!
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* \brief Interpolation line shape. The class extends wxSFLineShape class and allows
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* user to create curved connection line.
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*/
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class WXDLLIMPEXP_SF wxSFCurveShape : public wxSFLineShape
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{
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public:
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XS_DECLARE_CLONABLE_CLASS(wxSFCurveShape);
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/*! \brief Default constructor. */
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wxSFCurveShape();
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/*!
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* \brief User constructor.
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* \param src ID of the source shape
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* \param trg ID of the target shape
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* \param path Array of line's control points
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* \param manager Parent parent diagram manager
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*/
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wxSFCurveShape(long src, long trg, const wxXS::RealPointList& path, wxSFDiagramManager* manager);
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/*!
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* \brief Copy constructor.
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* \param obj Reference to the source object
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*/
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wxSFCurveShape(const wxSFCurveShape& obj);
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/*! \brief Destructor. */
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virtual ~wxSFCurveShape();
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// public virtual function
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/*!
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* \brief Get line's bounding box. The function can be overrided if neccessary.
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* \return Bounding rectangle
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*/
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virtual wxRect GetBoundingBox();
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// public functions
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/*!
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* \brief Get a line point laying on the given line segment and shifted
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* from the beggining of the segment by given offset.
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* \param segment Zero-based index of the line segment
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* \param offset Real value in the range from 0 to 1 which determines
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* the linepoint offset inside the line segment
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* \return Line point
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*/
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wxRealPoint GetPoint(size_t segment, double offset);
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protected:
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// protected virtual functions
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/*!
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* \brief Internal function used for drawing of completed line shape.
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* \param dc Refernce of the device context where the shape will be darwn to
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*/
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virtual void DrawCompleteLine(wxDC& dc);
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private:
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// private functions
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/*! \brief Auxiliary drawing function. */
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void GetSegmentQuaternion(size_t segment, wxRealPoint& A, wxRealPoint& B, wxRealPoint& C, wxRealPoint& D);
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/*! \brief Auxiliary drawing function. */
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void Catmul_Rom_Kubika(const wxRealPoint& A, const wxRealPoint& B, const wxRealPoint& C, const wxRealPoint& D, wxDC& dc);
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/*! \brief Auxiliary drawing function. */
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wxRealPoint Coord_Catmul_Rom_Kubika(const wxRealPoint& p1, const wxRealPoint& p2, const wxRealPoint& p3, const wxRealPoint& p4, double t);
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};
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#endif //_WXSFCURVESHAPE_H
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