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//////////////////////////////////////////////////////////////////////////////
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//<2F>ļ<EFBFBD> Matrix2D.h
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//<2F><>Ҫ<EFBFBD><D2AA><EFBFBD><EFBFBD>:
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//
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//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>д: 2005-12-07
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/////////////////////////////////////////////////////////////////////////////
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#pragma once
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//For any coordinates (x, y) in world space, the transformed coordinates in page
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//space (x', y') can be determined by the following algorithm:
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//x' = x * eM11 + y * eM21 + eDx,
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//y' = x * eM12 + y * eM22 + eDy,
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//where the transformation matrix is represented by the following:
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// | eM11 eM12 | | 1 0 | | m[0] m[1] |
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//Matrix = | eM21 eM22 | = | 0 1 | = | m[2] m[3] |
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// | eDx eDy | | 0 0 | | m[4] m[5] |
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class CMatrix2D
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{
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public:
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CMatrix2D(void);
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virtual ~CMatrix2D(void);
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bool IsIdentity(void);
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void Reset(void); // set identity matrix elements
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void SetMatrix(double m11, double m12, double m21, double m22, double dx, double dy);
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void SetMatrix(double *pm); //6<><36>
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void RotateAt(double centerX, double centerY, double angle);
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void Rotate(double angle);
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void Translate(double dx, double dy); //ƽ<>Ʊ任
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void Shear(double shearX, double shearY); //<2F><><EFBFBD>б任
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void Scale(double scaleX, double scaleY); //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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double Determinant();
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CMatrix2D Invert(bool *invertible);
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void operator=(const CMatrix2D& md);
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void operator*=(const CMatrix2D& md);
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void Exchange(double& x, double& y, BOOL bUndo=FALSE); //<2F><>bUndo=TRUEʱ<45><CAB1><EFBFBD>з<EFBFBD><D0B7>任
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void Exchange(long& x, long& y, BOOL bUndo=FALSE); //<2F><>bUndo=TRUEʱ<45><CAB1><EFBFBD>з<EFBFBD><D0B7>任
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BOOL GetElements(double* pele);
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BOOL GetElements(float* pele);
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protected:
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double mt[6];
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};
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