Hi,
Currently, if I have one custom geometry and a few further derived custom geometries, I need to do trait register on all of them. Like:
class derived_point1 : public base_point {};
class derived_point2 : public base_point1 {};
namespace boost { namespace polygon {
struct geometry_concept { typedef point_concept type; };
struct geometry_concept { typedef point_concept type; };
struct geometry_concept { typedef point_concept type; };
}
What I want is to register all custom geometries in one step. Like:
template<typename T>
struct geometry_concept()>::type> {
typedef point_concept type;
};
To do that, I need to add a dummy template type to all the trait classes to enable SFINAE. Attached is the patch (based on boost 1.57.0_1). Is this something we can consider?
Thanks,
Leo Xue
