--- Robert Dailey wrote:
> So far, this is all I've been able to come up with:
>
> #include <boost/mpl/map.hpp>
> #include <boost/mpl/at.hpp>
>
> namespace detail
> {
> template< unsigned int t_value >
> struct integral
> {
> static const unsigned int value = t_value;
> };
>
> typedef boost::mpl::map<
> boost::mpl::pair<float, integral<GL_FLOAT>
> >,
>
> boost::mpl::pair<double, integral<GL_DOUBLE>
> >
> > glTypeMap;
> };
>
> template< typename t_type >
> struct Vertex
> {
> static const unsigned int type =
> boost::mpl::at<detail::glTypeMap,
> t_type>::type::value;
> t_type x, y, z;
> };
Try this:
#include <boost/mpl/integral_c.hpp>
#include <boost/mpl/map.hpp>
#include <boost/mpl/at.hpp>
namespace detail {
using namespace boost;
using namespace mpl;
typedef map<
pair<
float
, integral_c<unsigned int,GL_FLOAT>
>
, pair<
double
, integral_c<unsigned int,GL_DOUBLE>
>
> glTypeMap;
template <typename t_type>
struct Vertex
{
static const unsigned int type =
at<glTypeMap,t_type>::type::value;
t_type x, y, z;
};
} // namespace detail
HTH,
Cromwell D. Enage