source: golgotha/src/max_plugin/sdk_inc/matrix2.h Tweet

/**********************************************************************
 *<
        FILE: matrix2.h

        DESCRIPTION: Class definitions for Matrix2

        CREATED BY: Dan Silva

        HISTORY:

 *>     Copyright (c) 1994, All Rights Reserved.
 **********************************************************************/

#ifndef __MATRIX2__ 

#define __MATRIX2_

#include "point2.h"

class Matrix2 {
public:
        float m[3][2];

        // Constructors
        Matrix2(){}      // NO INITIALIZATION done in this constructor!! (can use Zero or IdentityMatrix)
        DllExport Matrix2(float (*fp)[2]); 
        
        // Assignment operators
        DllExport Matrix2& operator-=( const Matrix2& M);
        DllExport Matrix2& operator+=( const Matrix2& M); 
        DllExport Matrix2& operator*=( const Matrix2& M);       // Matrix multiplication

        // Conversion function
        operator float*() { return(&m[0][0]); }

        // Initialize matrix
        DllExport void IdentityMatrix();        // Set to the Identity Matrix
        DllExport void Zero();          // Set all elements to 0

        // Apply Incremental transformations to this matrix
        DllExport void Translate(const Point2& p);
        DllExport void Rotate(float angle);  
        DllExport void Scale(const Point2& s);
                
        // Binary operators             
        DllExport Matrix2 Matrix2::operator*(const Matrix2& B) const;   
        DllExport Matrix2 Matrix2::operator+(const Matrix2& B) const;
        DllExport Matrix2 Matrix2::operator-(const Matrix2& B) const;
        };

// Build new matrices for transformations
Matrix2 DllExport RotateMatrix(float angle);   
Matrix2 DllExport TransMatrix(const Point2& p);
Matrix2 DllExport ScaleMatrix(const Point2& s);
 
Matrix2 DllExport Inverse(const Matrix2& M);

// Transform point with matrix:
Point2 DllExport operator*(const Matrix2& A, const Point2& V);
Point2 DllExport operator*( const Point2& V, const Matrix2& A);
Point2 DllExport VectorTransform(const Matrix2& M, const Point2& V);

// Printout
ostream DllExport &operator<< (ostream& s, const Matrix2& A); 

#endif