| #include "box_surface_area.h" |
| |
| |
| template <typename DerivedCorner> |
| IGL_INLINE typename DerivedCorner::Scalar igl::box_surface_area( |
| const Eigen::MatrixBase<DerivedCorner> & min_corner, |
| const Eigen::MatrixBase<DerivedCorner> & max_corner) |
| { |
| using Scalar = typename DerivedCorner::Scalar; |
| const auto dimensions = (max_corner - min_corner).eval(); |
| const auto num_dimensions = dimensions.size(); |
| |
| Scalar surface_area = 0; |
| for (int i = 0; i < num_dimensions; ++i) { |
| for (int j = i + 1; j < num_dimensions; ++j) { |
| surface_area += 2 * dimensions[i] * dimensions[j]; |
| } |
| } |
| |
| return surface_area; |
| } |
| |
| template <typename Scalar, int AmbientDim> |
| IGL_INLINE Scalar igl::box_surface_area( |
| const Eigen::AlignedBox<Scalar,AmbientDim> & box) |
| { |
| return igl::box_surface_area(box.min(),box.max()); |
| } |
| |
| #ifdef IGL_STATIC_LIBRARY |
| // Explicit template instantiation |
| // generated by autoexplicit.sh |
| template double igl::box_surface_area<double, 2>(Eigen::AlignedBox<double, 2> const&); |
| template double igl::box_surface_area<double, 3>(Eigen::AlignedBox<double, 3> const&); |
| #endif |
