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Wildmeshing Toolkit
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The map between the first and the last state of a tet mesh's volume, region by region, rebuilt from its surface history and its volume history (history::VolumeHistory). More...
#include <VolumeMap.hpp>
Classes | |
| struct | Faces |
| struct | OpMap |
| One operation's map: patch pairs applied in turn, each to the points in its tets. More... | |
| struct | Shared |
Public Member Functions | |
| VolumeMap (const history::SurfaceHistory &surface, history::VolumeHistory volume, const VolumeMapOptions &options={}) | |
| VolumeMap (VolumeMap &&) noexcept | |
| std::vector< VolumePoint > | to_output (std::vector< VolumePoint > points) const |
| Points of the first state, mapped onto the last. | |
| std::vector< VolumePoint > | to_input (std::vector< VolumePoint > points) const |
| Points of the last state, mapped onto the first. | |
| const history::VolumeHistory & | history () const |
| std::optional< uint32_t > | region_of (std::vector< int64_t > tags) const |
| The region of a tag set, if the history has it. | |
| std::optional< uint32_t > | region_of_groups (const std::set< std::string > &names) const |
| const SurfaceMap & | surface_map () const |
| VolumeMapStats | stats () const |
| What building and using the map found so far. | |
| void | build_all () const |
| Builds every operation's map, for the stats. | |
| std::vector< std::string > | op_kinds (size_t k) const |
Private Member Functions | |
| std::vector< VolumePoint > | map (std::vector< VolumePoint > points, bool forward) const |
| std::shared_ptr< const OpMap > | op (size_t k) const |
Private Attributes | |
| history::VolumeHistory | m_volume |
| VolumeMapOptions | m_options |
| SurfaceMap | m_surface |
| std::vector< std::unique_ptr< Faces > > | m_faces |
| std::vector< std::pair< Eigen::Vector3d, Eigen::Vector3d > > | m_boxes |
| Eigen::Vector3d | m_grid_lo = Eigen::Vector3d::Zero() |
| Eigen::Vector3d | m_grid_hi = Eigen::Vector3d::Zero() |
| double | m_grid_cell = 1 |
| std::unique_ptr< Shared > | m_shared |
The map between the first and the last state of a tet mesh's volume, region by region, rebuilt from its surface history and its volume history (history::VolumeHistory).
An operation that does not change the tracked surface leaves every region where it is: the identity in space. One that does gets a local map on the tets around it, built per region from pairs of patches (before -> after): each patch embedded star-shaped – its real geometry when it is, else a fallback embedding (see volume::spherical) – and points carried along rays from the centres by the boundary map, the identity on the faces the operation keeps and the surface map's local map (SurfaceMap, CollapsePatch::removed_star) on the tracked faces it changes. Both sides of the surface use the same surface map, so they agree on it. A collapse whose side has a chord goes through a decomposition (split, collapse, unsplit), a swap that cannot be one pair through an exact split and a collapse.
The const queries – to_output(), to_input(), build_all(), op_kinds(), stats() – may be called on one map from several threads at once: what they share, the operations built and kept and the stats, is kept under a mutex, and each call counts its points' stats apart and adds them at its end.
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Operation k's map, from the cache or built; nothing if it cannot be built. The stats count each operation once, however often it is built.
| std::vector< std::string > wmtk::components::tracking::VolumeMap::op_kinds | ( | size_t | k | ) | const |
The kinds of the patch pairs operation k's map is made of ("single", "move", "swap side", a decomposition's steps, ...); none if it cannot be built. For tests and reports.
| std::optional< uint32_t > wmtk::components::tracking::VolumeMap::region_of_groups | ( | const std::set< std::string > & | names | ) | const |
The region of a tet a mesh file lists in the groups names – the tags' labels (VolumeHistory::tag_names), as io::collect_tags gives them; none, or "ambient" when no tag has that label, for a tet with no tag – if the history has it.
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Per volume edit: its tracked faces before and after, and the box of its positions, before and after it, which a point must be in to be in its tets.
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The grid a call finds the points in an operation's box with: over the boxes of all the operations – a point outside them is in none – its cells as wide as the median box.
1.9.8