matrix.hh

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#include <GL/gl.h>

#ifndef MATRIX_HH
#define MATRIX_HH

template <unsigned int r, unsigned int c>
class Matrix {
  public:
    Matrix();

    bool isSquare() const { return r == c; }

    void setIdentity();

    void glMultiply() const { assert (r == c == 4); glMultMatrixd (me); }

    double operator() (unsigned int i, unsigned int j) const
      { assert (i < r); assert (j < c); return data[i + r*j]; }

    double& operator() (unsigned int i, unsigned int j)
      { assert (i < r); assert (j < c); return data[i + r*j]; }

    const Matrix<r,c>& operator+= (const Matrix<r,c> &m);

    const Matrix<r,c>& operator-= (const Matrix<r,c> &m);

    const Matrix<r,c>& operator*= (double);

    const Matrix<r,c>& operator/= (double);

  private:
    double data[r*c];
};

template <unsigned int a, unsigned int b, unsigned int c>
Matrix<a,c> operator* (const Matrix<a,b>&, const Matrix<b,c>&);

template <unsigned int a, unsigned int b, unsigned int c>
Matrix<a,c> operator/ (const Matrix<a,b>&, const Matrix<b,c>&);

#include "matrix.impl"

#endif 

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