a_2dh.cxx

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#include "a_2dh.h"
#include <sstream>
//---------------------------------------------------------------------------
const std::string a_2dh::help()
{
        std::ostringstream o;
        o << "*****" << std::endl;
        o << "a_2dh" << std::endl;
        o << "****" << std::endl;
        o << "This is a 2 dimensional homogeneous point class" << std::endl;
        o << "Commands:" << std::endl;
        o << "--------" << std::endl;
        o << "X: set or get the homogeneous coordinate" << std::endl;
        o << "Y: set or get the homogeneous coordinate" << std::endl;
        o << "T: set or get the homogeneous coordinate" << std::endl;
        o << "x: get the coordinate (no check)" << std::endl;
        o << "y: get the coordinate (no check)" << std::endl;
        o << "set x y (t): set the coordinates" << std::endl;
        o << "set a_point2: set the coordinates" << std::endl;
        o << "point2: get a_point2 representation (no check)" << std::endl;
        return o.str();
}
//---------------------------------------------------------------------------
a_2dh::a_2dh(const a_mat& m) : a_mat_c(3)
{
        if (m.maxi() != maxi_) throw compatibility_error();
        if (m.maxj() != maxj_) throw compatibility_error();
        for (int i = 0; i<3; i++)
                (*this)(i)= m(i,0);
}
//***************************************************************************
//-operator>>----------------------------------------------------------------
std::istream& operator>> (std::istream& i, a_2dh & m)
{
        double x,y;
        i >> x >> y;
        m.X(x);
        m.Y(y);
        m.T(1.);
        return i;
}
//-operator<<----------------------------------------------------------------
std::ostream& operator<< (std::ostream& o, const a_2dh & m)
{
        o << m.x() << " " << m.y() << std::endl;
        return o;
}