kev/Drawer/SSBase/MxnFormat/CoorTransform.h

//////////////////////////////////////////////////////////////////////////////
//<2F>ļ<EFBFBD>: SegY<67>ļ<EFBFBD><C4BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
//<2F><>Ҫ<EFBFBD><D2AA><EFBFBD><EFBFBD>: 
//			ʵ<><CAB5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ߵ<EFBFBD><DFB5><EFBFBD>֮<EFBFBD><D6AE><EFBFBD><EFBFBD><EFBFBD>໥ת<E0BBA5><D7AA>
//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>д:		2011-4-1
//
//
/////////////////////////////////////////////////////////////////////////////

#pragma once
#include "RowCol.h"
#include "TInterval.h"

namespace NCube
{

//ʵ<><CAB5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ߵ<EFBFBD><DFB5><EFBFBD>֮<EFBFBD><D6AE><EFBFBD><EFBFBD><EFBFBD>໥ת<E0BBA5><D7AA>
class AFX_EXT_CLASS CCoorTransform
{
public:
	CCoorTransform(void);
	~CCoorTransform(void);

	//<2F><><EFBFBD><EFBFBD>x<EFBFBD><78>y<EFBFBD><79>Ϊ<EFBFBD><CEAA><EFBFBD>꣬<EFBFBD><EAA3AC><EFBFBD><EFBFBD>m<EFBFBD><6D>n<EFBFBD><6E>Ϊ<EFBFBD>ߵ<EFBFBD><DFB5><EFBFBD>
	bool Create( double x1, double y1, double m1, double n1, 
				 double ddx, double ddy, double angle );
	//<2F><><EFBFBD>ݶ<EFBFBD>Ӧ<EFBFBD><D3A6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ƽ<EFBFBD><C6BD>(<28><><EFBFBD><EFBFBD>Уλ)
	bool Create(
		double x1, double y1, double m1, double n1,
		double x2, double y2, double m2, double n2 );

	//<2F><><EFBFBD>ݶ<EFBFBD>Ӧ<EFBFBD><D3A6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ƽ<EFBFBD><C6BD>(<28><><EFBFBD><EFBFBD>Уλ)
	bool Create(
		double x1, double y1, double m1, double n1,
		double x2, double y2, double m2, double n2,
		double x3, double y3, double m3, double n3 );

	////////////////////////////////////////////////////////////////
	//<2F><><EFBFBD><EFBFBD>				max inline
	//		2---------------------------
	//		|							|
	//		|							|  max
	//		|							|crossline
	//		|							|
	//		|							|
	//		1---------------------------3
	/////////////////////////////////////////////////////////////////
	//!< <20><><EFBFBD>ñ任<C3B1><E4BBBB>Ҫ<EFBFBD><D2AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ӧ<EFBFBD><D3A6><EFBFBD><EFBFBD><EFBFBD><EFBFBD>. ע<><D7A2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ߺ<EFBFBD><DFBA><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD>ߺ<EFBFBD><DFBA><EFBFBD>ͬ
	//!< c0<63><30>c1<63><31>c2Ϊʵ<CEAA><CAB5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>㣬<EFBFBD><E3A3AC>Ӧ<EFBFBD><D3A6><EFBFBD>ߵ<EFBFBD><DFB5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊrc0<63><30>rc1<63><31>rc2(rc0.row,col2)
	bool set3Points(
		const CPoint2D& c0, const CPoint2D& c1, const CPoint2D& c2,
		const CRowCol& rc0, const CRowCol& rc1, int col2 );

	//!< <20>ߵ<EFBFBD><DFB5><EFBFBD>ת<EFBFBD><D7AA>Ϊ<EFBFBD><CEAA><EFBFBD><EFBFBD>
	void	 toXY(const CRowCol& rc, CPoint2D& pt);
	void	 toXY(int row, int col, double&x, double& y);
	void	 toXY(double row, double col, double&x, double& y);
	CPoint2D toXY(const CRowCol& rc);
	CPoint2D toXY(int row, int col);
	CPoint2D toXY(double row, double col);

	//!< <20><><EFBFBD><EFBFBD>ת<EFBFBD><D7AA>Ϊ<EFBFBD>ߵ<EFBFBD><DFB5><EFBFBD>
	void     toRC(const CPoint2D& pt, CRowCol& rc);
	void     toRC(double x, double y, int& row, int& col);
	CRowCol	 toRC(const CPoint2D& pt);
	CRowCol  toRC(double x, double y);

	//!< <20><><EFBFBD>ߵ<EFBFBD><DFB5><EFBFBD>ת<EFBFBD><D7AA>Ϊ<EFBFBD><CEAA><EFBFBD><EFBFBD>
	CRowCol	TransformBack(const CPoint2D& coord,
		const TIntervalStep<int>* inlrg=0,
		const TIntervalStep<int>* crlrg=0 ) const;
	/*!< Transforms Coord to RowCol. If the ranges are
	given, they are only used for snapping: the	actual range is not used */

	CPoint2D TransformBackNoSnap(const CPoint2D& coord) const;
	/*!< transforms back, but does not snap. The row is stored in the x-component, and the
	col is stored in the y-component. */

	//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	void	WriteLine(LPCTSTR lpszFileName, TIntervalStep<int> row, TIntervalStep<int> col);

	void	Write(CFile& fw);
	int 	Read(CFile& fr);
	void	Serialize(CArchive& ar, const short &ver);

protected:
	//!<Sets up the transform using three points. note that the third point is
	//assumed to be on the same row as the first point.
	struct RCTransform
	{
		RCTransform()	{ a = b = c = 0; }

		inline double det( const RCTransform& bct ) const
		{
			return b * bct.c - bct.b * c;
		}
		inline bool	valid( const RCTransform& bct ) const
		{
			double d = det( bct );
			return !mIsZero(d, 1e-10);
		}

		double		a, b, c;
	};

public:
	void	setTransforms( const RCTransform& x,const RCTransform& y )	{ xtr = x; ytr = y; }
	const RCTransform&	getTransform( bool x ) const { return x ? xtr : ytr; }

protected:
	RCTransform		xtr;
	RCTransform		ytr;

public:
	//<2F>γɱ任<C9B1>Ķ<EFBFBD>Ӧ<EFBFBD><D3A6><EFBFBD><EFBFBD>
	CPoint2D m_pt[3];
	CRowCol  m_rc[3];
};

}//namespace