int dx = abs(x1 - x0),
        dy = abs(y1 - y0);

    bool steep = dy > dx;

    if(steep)
    {
        Swap(dx, dy);
        Swap(x0, z0);
        Swap(x1, z1);
    }

    int error = 0,
        de = dy,
        &x = steep ? y0 : x0,
        &y = steep ? x0 : y0,
        xstep = (x0 < x1) ? 1 : -1, 
        ystep = (y0 < y1) ? 1 : -1;

    Plot(x, y);

    while(x0 != x1)
    {
        x0 += xstep;
        error += de;
        if( (error << 1) >= dx)
        {
            y0 += ystep;
            error -= dx;
        }
        Plot(x, y);
    }