ImplicitSurfaceNetwork/primitive_process/interface/subface/simple/cone_face.hpp

#pragma once

#include <base/subface.hpp>
#include <primitive_descriptor.h>

namespace internal
{
// local: cone face x^2+y^2-z^2=0(z<=0)
struct cone_face_t final : subface {
};
} // namespace internal

namespace detail
{
// Q' = M^{-T}QM^{-1}
// Q = {
// 1, 0, 0, 0
// 0, 1, 0, 0
// 0, 0, -1, 0
// 0, 0, 0, 0
// }
const Eigen::Vector4d cone_std_diag{1, 1, -1, 0};

template <>
inline size_t hasher<internal::cone_face_t>::operator()(const internal::cone_face_t& subface) const
{
    return hash_funcs(get_quadrics_character(cone_std_diag, subface));
}

template <>
inline bool eq_compare<internal::cone_face_t>::operator()(const internal::cone_face_t& lhs,
                                                          const internal::cone_face_t& rhs) const
{
    return eq_funcs(get_quadrics_character(cone_std_diag, lhs), get_quadrics_character(cone_std_diag, rhs));
}
} // namespace detail