67 lines
1.9 KiB
C++
67 lines
1.9 KiB
C++
/**********************************************************************
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*<
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FILE: matrix2.h
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DESCRIPTION: Class definitions for Matrix2
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CREATED BY: Dan Silva
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HISTORY:
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*> Copyright (c) 1994, All Rights Reserved.
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**********************************************************************/
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#ifndef __MATRIX2__
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#define __MATRIX2_
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#include "point2.h"
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class Matrix2 {
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public:
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float m[3][2];
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// Constructors
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Matrix2(){} // NO INITIALIZATION done in this constructor!! (can use Zero or IdentityMatrix)
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DllExport Matrix2(float (*fp)[2]);
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// Assignment operators
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DllExport Matrix2& operator-=( const Matrix2& M);
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DllExport Matrix2& operator+=( const Matrix2& M);
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DllExport Matrix2& operator*=( const Matrix2& M); // Matrix multiplication
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// Conversion function
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operator float*() { return(&m[0][0]); }
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// Initialize matrix
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DllExport void IdentityMatrix(); // Set to the Identity Matrix
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DllExport void Zero(); // Set all elements to 0
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// Apply Incremental transformations to this matrix
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DllExport void Translate(const Point2& p);
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DllExport void Rotate(float angle);
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DllExport void Scale(const Point2& s);
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// Binary operators
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DllExport Matrix2 Matrix2::operator*(const Matrix2& B) const;
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DllExport Matrix2 Matrix2::operator+(const Matrix2& B) const;
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DllExport Matrix2 Matrix2::operator-(const Matrix2& B) const;
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};
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// Build new matrices for transformations
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Matrix2 DllExport RotateMatrix(float angle);
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Matrix2 DllExport TransMatrix(const Point2& p);
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Matrix2 DllExport ScaleMatrix(const Point2& s);
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Matrix2 DllExport Inverse(const Matrix2& M);
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// Transform point with matrix:
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Point2 DllExport operator*(const Matrix2& A, const Point2& V);
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Point2 DllExport operator*( const Point2& V, const Matrix2& A);
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Point2 DllExport VectorTransform(const Matrix2& M, const Point2& V);
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// Printout
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ostream DllExport &operator<< (ostream& s, const Matrix2& A);
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#endif
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