//-------------------------------------------------------------------------------------------------------+
// Copyright (C), 1998-2007, Beijing Tangent Software Co. Ltd.
// = FileName	:   TGMatrix 类
// = Version	:   ver2.0
// = Author		:   wlw
// = CreateDate	:   2002-09-09
// = Description:   TGMatrix 声明 三维变换矩阵,右乘
// = Maintainers: cpp中336行，为；
//                  
//-------------------------------------------------------------------------------------------------------+
#ifndef _TGMATRIX_H_
#define _TGMATRIX_H_

#ifndef _TGVECTOR2D_H_
#include "TGVector2D.h"
#endif

#ifndef _TGVECTOR3D_H_
#include "TGVector3D.h"
#endif

#ifndef _TPGECOORDSYS_H_
#include "TPGeCoordSys.h"
#endif

#ifndef _TPGELINE3D_H_
#include "TPGeLine3D.h"
#endif

#ifndef _TGPOINT_H_
#include "TGPoint.h"
#endif

#ifndef _TPGEPLANE_H_
#include "TPGePlane.h"
#endif

typedef double GTransformMatrix[4][4];

class GEOAPI TGMatrix
{
public:
	TGMatrix();
	TGMatrix(const TGMatrix& m2);
	TGMatrix& operator = (const TGMatrix& m2);
	TGMatrix& operator = (const float *m);
	virtual ~TGMatrix();

	//data
	double *operator [](int i) const;

	//Set
	void Init();
	void InitIdentity();
	TGMatrix& operator *= (const TGMatrix & m2);

	//逆矩阵
	bool Reverse();

	//翻转矩阵
	void Swap();

	//TPGeCoordSys
	void SetCoordSys(const TGPoint& pt,const TGVector3D& x,const TGVector3D& y,const TGVector3D& z);
	void SetCoordSys(const TGPoint& pt,const TGVector3D& z,bool bRight = true);
	void SetCoordSys(const TPGePlane& plane,bool bRight = true);
	void SetCoordSys(const TGPoint& pt,const TGVector3D& x,const TGVector3D& vt,bool bRight = true);
	void SetCoordSys(const TGPoint& pt,const TGPoint&  xPt,const TGPoint& yPt,bool bRight = true);
	void GetCoordSys(TPGeCoordSys& sys) const;

	//构造具体变换矩阵，调用之前保证初始化为单位矩阵(用InitIdentity())!
	//二维变换矩阵
	void CreateMoveMatrix(double cx,double cy);
	void CreateMoveMatrix(const TGVector2D& vt);
	void CreateScaleMatrix(double sx,double sy);
	void CreateScaleMatrix(double sx,double sy,const TGPoint& basePoint);
	void CreateRotateMatrix(double angle,const TGPoint& basePoint);

	//三维变换
	void CreateMoveMatrix(double cx,double cy,double cz);
	void CreateMoveMatrix(const TGVector3D& vt);
	void CreateScaleMatrix(double sx,double sy,double sz);
	void CreateScaleMatrix(double sx,double sy,double sz,const TGPoint & basePoint);
    void CreateXRotateMatrix(double angle);
	void CreateYRotateMatrix(double angle);
	void CreateZRotateMatrix(double angle);
	void CreateRotateMatrix(double angle,const TPGeLine3D & axis);

	//投影
	//正平行投影到XY平面,使所有Z分量变为0
	void CreateXYProjectMatrix();
	
	//投影到XY平面,选择平行投影或一点透视投影
	bool CreateXYProjectMatrix(const TGPoint& pt,bool bParallel = true);
	
	//投影到plane平面,选择平行投影或一点透视投影
	bool CreateProjectMatrix(const TPGePlane& plane,const TGPoint& pt,bool bParallel = true);

	//transform
	void Transform2D(TGPoint & point) const;
	void Transform3D(TGPoint & point) const;
	void Transform(TGVector3D& vt) const;
	void Transform(TGVector2D& vt) const;

	//other
	TGMatrix operator *(const TGMatrix& m2) const;
	double Rank() const;
	bool CanReverse() const;

	//转化为float矩阵
	void Export(float*m) const;

public:
	GTransformMatrix matrix;

};

inline void TGMatrix::SetCoordSys(const TGPoint& pt,const TGVector3D& x,const TGVector3D& y,const TGVector3D& z)
{
	TPGeCoordSys coord(pt,x,y,z);
	coord.GetMatrixTo(this);
}

inline void TGMatrix::SetCoordSys(const TGPoint& pt,const TGVector3D& z,bool bRight)
{
	TPGeCoordSys coord(pt,z,bRight);
	coord.GetMatrixTo(this);
}

inline void TGMatrix::SetCoordSys(const TPGePlane& plane,bool bRight)
{
	TPGeCoordSys coord(plane,bRight);
	coord.GetMatrixTo(this);
}

inline void TGMatrix::SetCoordSys(const TGPoint& pt,const TGPoint& xPt,const TGPoint& yPt,bool bRight)
{
	TPGeCoordSys coord(pt,xPt,yPt,bRight);
	coord.GetMatrixTo(this);
}

inline void TGMatrix::SetCoordSys(const TGPoint& pt,const TGVector3D& x,const TGVector3D& vt,bool bRight)
{
	TPGeCoordSys coord(pt,x,vt,bRight);
	coord.GetMatrixTo(this);
}

//正平行投影到XY平面,使所有Z分量变为0
inline void TGMatrix::CreateXYProjectMatrix()
{
	matrix[2][0] = matrix[2][1] = matrix[2][2] = matrix[2][3] = 0;
}

#endif