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apply support for topo ray shooting under sparse terahedron distribution

V2-origin
Zhicheng Wang 3 months ago
parent
81edca713d
commit
edd71b34be
8 changed files with 174 additions and 109 deletions
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  1. 7
      network_process/include/connect_by_topo/topology_ray_shooting.hpp
  2. 10
      network_process/include/prim_gen.hpp
  3. 16
      network_process/interface/fwd_types.hpp
  4. 55
      network_process/src/connect_by_topo/topology_ray_shooting.cpp
  5. 59
      network_process/src/prim_gen/build_tetrahedron_and_adjacency.cpp
  6. 2
      network_process/src/prim_gen/extract_mesh.cpp
  7. 49
      network_process/src/prim_gen/filter_tet_by_subface.cpp
  8. 37
      network_process/src/process.cpp

7
network_process/include/connect_by_topo/topology_ray_shooting.hpp
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@ -11,6 +11,7 @@ struct face_with_orient_t;
// topological ray shooting for implicit arrangement
void topo_ray_shooting(const scene_bg_mesh_info_t &scene_bg_mesh_info,
const stl_vector_mp<std::array<uint32_t, 4>> &tetrahedrons,
const flat_hash_map_mp<uint32_t, uint32_t> &vertex_lexigraphical_adjacency,
const stl_vector_mp<arrangement_t> &tetrahedron_arrangements,
const stl_vector_mp<iso_vertex_t> &iso_verts,
const stl_vector_mp<polygon_face_t> &iso_faces,
@ -22,12 +23,6 @@ void topo_ray_shooting(const scene_bg_mesh_info_t &scene_bg_me
const stl_vector_mp<uint32_t> &component_of_patch,
stl_vector_mp<std::pair<uint32_t, uint32_t>> &shell_links);
// Given tet mesh,
// build the map: v-->v_next, where v_next has lower order than v
void build_next_vert(const scene_bg_mesh_info_t &scene_bg_mesh_info,
const stl_vector_mp<std::array<uint32_t, 4>> &tetrahedrons,
flat_hash_map_mp<uint32_t, uint32_t> &next_vert);
// find extremal edge for each component
void find_extremal_edges(const scene_bg_mesh_info_t &scene_bg_mesh_info,
const stl_vector_mp<iso_vertex_t> &iso_verts,

10
network_process/include/prim_gen.hpp
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@ -13,13 +13,17 @@ void extract_vertex_infos(const s_settings& setting
const baked_blobtree_t& tree,
scene_bg_mesh_info_t& scene_bg_mesh_info,
Eigen::Ref<Eigen::MatrixXd> vertex_infos);
void pair_tetrahedron(const scene_bg_mesh_info_t& scene_bg_mesh_info,
void build_tetrahedron_and_adjacency(const scene_bg_mesh_info_t& scene_bg_mesh_info,
stl_vector_mp<std::array<uint32_t, 4>>& tetrahedrons,
flat_hash_map_mp<uint32_t, stl_vector_mp<uint32_t>>& vertex_to_tet_mapping);
void filter_tet_by_subface(const flat_hash_map_mp<uint32_t, stl_vector_mp<uint32_t>>& vertex_to_tet_mapping,
flat_hash_map_mp<uint32_t, uint32_t>& vertex_lexigraphical_adjacency,
flat_hash_map_mp<uint32_t, stl_vector_mp<uint32_t>>& reverse_vertex_adjacency,
btree_map_mp<uint32_t, stl_vector_mp<uint32_t>>& vertex_to_tet_mapping);
void filter_tet_by_subface(const btree_map_mp<uint32_t, stl_vector_mp<uint32_t>>& vertex_to_tet_mapping,
Eigen::Ref<Eigen::MatrixXd> vertex_infos,
flat_hash_map_mp<uint32_t, uint32_t>& vertex_indices_mapping,
stl_vector_mp<std::array<uint32_t, 4>>& tetrahedrons,
flat_hash_map_mp<uint32_t, uint32_t>& vertex_lexigraphical_adjacency,
const flat_hash_map_mp<uint32_t, stl_vector_mp<uint32_t>>& reverse_vertex_adjacency,
stl_vector_mp<uint32_t>& tetrahedron_active_subface_start_index,
stl_vector_mp<uint32_t>& active_subface_indices,
flat_hash_map_mp<uint32_t, stl_vector_mp<uint32_t>>& zero_vertex_to_incident_tet_mapping);

16
network_process/interface/fwd_types.hpp
View File

@ -2,6 +2,7 @@
#include <container/dynamic_bitset.hpp>
#include <container/hashmap.hpp>
#include <container/btree.hpp>
#include <container/stl_alias.hpp>
#include <math/math_defs.hpp>
@ -22,9 +23,10 @@ struct scene_bg_mesh_info_t {
Eigen::Vector<uint64_t, 3> vert_resolution{};
};
// x as the most significant bit, y as the second most significant bit, z as the least significant bit
static inline uint32_t hash_vert_pos(size_t x, size_t y, size_t z, const scene_bg_mesh_info_t& info)
{
return static_cast<uint32_t>(x + info.vert_resolution.x() * (y + info.vert_resolution.y() * z));
return static_cast<uint32_t>(z + info.vert_resolution.z() * (y + info.vert_resolution.y() * x));
}
static inline Eigen::Vector3d get_grid_pos(size_t x, size_t y, size_t z, const scene_bg_mesh_info_t& info)
@ -39,17 +41,17 @@ static inline Eigen::Vector3d get_grid_pos(const Eigen::Vector3d& pos, const sce
static inline Eigen::Vector3d get_vert_pos(uint32_t hashed_value, const scene_bg_mesh_info_t& info)
{
size_t x = static_cast<size_t>(hashed_value % (info.vert_resolution.x()));
size_t y = static_cast<size_t>((hashed_value / info.vert_resolution.x()) % info.vert_resolution.y());
size_t z = static_cast<size_t>(hashed_value / (info.vert_resolution.x() * info.vert_resolution.y()));
size_t z = static_cast<size_t>(hashed_value % (info.vert_resolution.z()));
size_t y = static_cast<size_t>((hashed_value / info.vert_resolution.z()) % info.vert_resolution.y());
size_t x = static_cast<size_t>(hashed_value / (info.vert_resolution.z() * info.vert_resolution.y()));
return get_grid_pos(x, y, z, info);
}
static inline std::array<size_t, 3> get_grid_pos(uint32_t hashed_value, const scene_bg_mesh_info_t& info)
{
size_t x = static_cast<size_t>(hashed_value % (info.vert_resolution.x()));
size_t y = static_cast<size_t>((hashed_value / info.vert_resolution.x()) % info.vert_resolution.y());
size_t z = static_cast<size_t>(hashed_value / (info.vert_resolution.x() * info.vert_resolution.y()));
size_t z = static_cast<size_t>(hashed_value % (info.vert_resolution.z()));
size_t y = static_cast<size_t>((hashed_value / info.vert_resolution.z()) % info.vert_resolution.y());
size_t x = static_cast<size_t>(hashed_value / (info.vert_resolution.z() * info.vert_resolution.y()));
return {x, y, z};
}

55
network_process/src/connect_by_topo/topology_ray_shooting.cpp
View File

@ -70,16 +70,11 @@ struct equal_to<face_with_orient_t> {
};
} // namespace std
// point (x,y,z): dictionary order
inline bool point_xyz_less(const Eigen::Vector3d &p, const Eigen::Vector3d &q)
{
return std::lexicographical_compare(p.begin(), p.end(), q.begin(), q.end());
}
// ============================================================================================
void topo_ray_shooting(const scene_bg_mesh_info_t &scene_bg_mesh_info,
const stl_vector_mp<std::array<uint32_t, 4>> &tetrahedrons,
const flat_hash_map_mp<uint32_t, uint32_t> &vertex_lexigraphical_adjacency,
const stl_vector_mp<arrangement_t> &tetrahedron_arrangements,
const stl_vector_mp<iso_vertex_t> &iso_verts,
const stl_vector_mp<polygon_face_t> &iso_faces,
@ -91,10 +86,6 @@ void topo_ray_shooting(const scene_bg_mesh_info_t &scene_bg_me
const stl_vector_mp<uint32_t> &component_of_patch,
stl_vector_mp<std::pair<uint32_t, uint32_t>> &shell_links)
{
// map: tet vert index --> index of next vert (with smaller (x,y,z))
flat_hash_map_mp<uint32_t, uint32_t> next_vert{};
build_next_vert(scene_bg_mesh_info, tetrahedrons, next_vert);
// find extremal edge for each component
// extremal edge of component i is stored at position [2*i], [2*i+1]
stl_vector_mp<uint32_t> extremal_edge_of_component{};
@ -110,7 +101,7 @@ void topo_ray_shooting(const scene_bg_mesh_info_t &scene_bg_me
patches,
components,
component_of_patch,
next_vert,
vertex_lexigraphical_adjacency,
extremal_edge_of_component,
iso_vert_on_v_v_next,
iso_face_id_of_tet_face,
@ -178,18 +169,16 @@ void topo_ray_shooting(const scene_bg_mesh_info_t &scene_bg_me
: shell_of_half_patch[2 * patch_of_face[iso_fId] + 1];
// follow the ray till another iso-vertex or the sink
auto v_curr = extreme_v2;
// while (next_vert[v_curr] != invalid_index && iso_vert_on_v_v_next[v_curr] == invalid_index) {
while (next_vert.find(v_curr) != next_vert.end()
while (vertex_lexigraphical_adjacency.find(v_curr) != vertex_lexigraphical_adjacency.end()
&& iso_vert_on_v_v_next.find(v_curr) == iso_vert_on_v_v_next.end()) {
v_curr = next_vert[v_curr];
v_curr = vertex_lexigraphical_adjacency.at(v_curr);
}
// if (iso_vert_on_v_v_next[v_curr] != invalid_index) {
if (iso_vert_on_v_v_next.find(v_curr) != iso_vert_on_v_v_next.end()) {
// reached iso-vert at end of the ray
const auto iso_vId_end = iso_vert_on_v_v_next[v_curr];
const auto end_tetId = iso_verts[iso_vId_end].header.volume_index;
const auto &end_tet_arrangement = tetrahedron_arrangements[end_tetId];
auto v_next = next_vert[v_curr];
auto v_next = vertex_lexigraphical_adjacency.at(v_curr);
// find local vertex indices in the end tetrahedron
for (uint32_t j = 0; j < 4; ++j) {
if (tetrahedrons[end_tetId][j] == v_curr) {
@ -221,24 +210,6 @@ void topo_ray_shooting(const scene_bg_mesh_info_t &scene_bg_me
}
}
void build_next_vert(const scene_bg_mesh_info_t &scene_bg_mesh_info,
const stl_vector_mp<std::array<uint32_t, 4>> &tetrahedrons,
flat_hash_map_mp<uint32_t, uint32_t> &next_vert)
{
next_vert.reserve(tetrahedrons.size() * 2);
for (const auto &tet : tetrahedrons) {
// find the smallest vertex of tet
auto min_iter = std::min_element(tet.begin(), tet.end(), [&](const uint32_t &lhs, const uint32_t &rhs) {
return point_xyz_less(get_vert_pos(lhs, scene_bg_mesh_info), get_vert_pos(rhs, scene_bg_mesh_info));
});
//
for (auto iter = tet.begin(); iter != tet.end(); ++iter) {
if (iter != min_iter) next_vert[*iter] = *min_iter;
}
}
}
void find_extremal_edges(const scene_bg_mesh_info_t &scene_bg_mesh_info,
const stl_vector_mp<iso_vertex_t> &iso_verts,
const stl_vector_mp<polygon_face_t> &iso_faces,
@ -277,12 +248,8 @@ void find_extremal_edges(const scene_bg_mesh_info_t
u2 = v2;
} else {
if (v2 == u2) {
if (point_xyz_less(get_vert_pos(v1, scene_bg_mesh_info),
get_vert_pos(u1, scene_bg_mesh_info))) {
u1 = v1;
}
} else if (point_xyz_less(get_vert_pos(v2, scene_bg_mesh_info),
get_vert_pos(u2, scene_bg_mesh_info))) {
if (v1 < u1) { u1 = v1; }
} else if (v2 < u2) {
u1 = v1;
u2 = v2;
}
@ -300,12 +267,8 @@ void find_extremal_edges(const scene_bg_mesh_info_t
u2 = v1;
} else {
if (v1 == u2) {
if (point_xyz_less(get_vert_pos(v2, scene_bg_mesh_info),
get_vert_pos(u1, scene_bg_mesh_info))) {
u1 = v2;
}
} else if (point_xyz_less(get_vert_pos(v1, scene_bg_mesh_info),
get_vert_pos(u2, scene_bg_mesh_info))) {
if (v2 < u1) { u1 = v2; }
} else if (v1 < u2) {
u1 = v2;
u2 = v1;
}

59
network_process/src/prim_gen/pair_tetrahedron.cpp → network_process/src/prim_gen/build_tetrahedron_and_adjacency.cpp
View File

@ -2,9 +2,24 @@
static constexpr uint64_t intertwined_01_bit_block = 0x5555555555555555;
void pair_tetrahedron(const scene_bg_mesh_info_t& scene_bg_mesh_info,
static void insert_or_compare_vertex_adjacency(flat_hash_map_mp<uint32_t, uint32_t>& vertex_lexigraphical_adjacency,
flat_hash_map_mp<uint32_t, stl_vector_mp<uint32_t>>& reverse_vertex_adjacency,
std::array<uint32_t, 3> src,
uint32_t dst)
{
reverse_vertex_adjacency[dst].reserve(reverse_vertex_adjacency[dst].size() + 3);
for (const auto& s : src) {
auto [iter, is_new] = vertex_lexigraphical_adjacency.try_emplace(s, dst);
if (!is_new) iter->second = std::min(iter->second, dst);
reverse_vertex_adjacency[dst].emplace_back(s);
}
}
void build_tetrahedron_and_adjacency(const scene_bg_mesh_info_t& scene_bg_mesh_info,
stl_vector_mp<std::array<uint32_t, 4>>& tetrahedrons,
flat_hash_map_mp<uint32_t, stl_vector_mp<uint32_t>>& vertex_to_tet_mapping)
flat_hash_map_mp<uint32_t, uint32_t>& vertex_lexigraphical_adjacency,
flat_hash_map_mp<uint32_t, stl_vector_mp<uint32_t>>& reverse_vertex_adjacency,
btree_map_mp<uint32_t, stl_vector_mp<uint32_t>>& vertex_to_tet_mapping)
{
auto max_pos = scene_bg_mesh_info.vert_resolution.template cast<size_t>() - Eigen::Vector<size_t, 3>::Ones();
tetrahedrons.reserve((max_pos.array() - 1).prod() * 5);
@ -27,12 +42,52 @@ void pair_tetrahedron(const scene_bg_mesh_info_t& scene
tetrahedrons.emplace_back(std::array{v1, v3, v0, v4});
tetrahedrons.emplace_back(std::array{v3, v1, v2, v6});
tetrahedrons.emplace_back(std::array{v4, v1, v6, v5});
insert_or_compare_vertex_adjacency(vertex_lexigraphical_adjacency,
reverse_vertex_adjacency,
{v6, v1, v3},
v4);
insert_or_compare_vertex_adjacency(vertex_lexigraphical_adjacency,
reverse_vertex_adjacency,
{v6, v3, v7},
v4);
insert_or_compare_vertex_adjacency(vertex_lexigraphical_adjacency,
reverse_vertex_adjacency,
{v1, v3, v4},
v0);
insert_or_compare_vertex_adjacency(vertex_lexigraphical_adjacency,
reverse_vertex_adjacency,
{v1, v2, v6},
v3);
insert_or_compare_vertex_adjacency(vertex_lexigraphical_adjacency,
reverse_vertex_adjacency,
{v1, v6, v5},
v4);
} else {
tetrahedrons.emplace_back(std::array{v7, v0, v2, v5});
tetrahedrons.emplace_back(std::array{v2, v3, v0, v7});
tetrahedrons.emplace_back(std::array{v5, v7, v0, v4});
tetrahedrons.emplace_back(std::array{v7, v2, v6, v5});
tetrahedrons.emplace_back(std::array{v0, v1, v2, v5});
insert_or_compare_vertex_adjacency(vertex_lexigraphical_adjacency,
reverse_vertex_adjacency,
{v7, v2, v5},
v0);
insert_or_compare_vertex_adjacency(vertex_lexigraphical_adjacency,
reverse_vertex_adjacency,
{v2, v3, v7},
v0);
insert_or_compare_vertex_adjacency(vertex_lexigraphical_adjacency,
reverse_vertex_adjacency,
{v5, v7, v4},
v0);
insert_or_compare_vertex_adjacency(vertex_lexigraphical_adjacency,
reverse_vertex_adjacency,
{v2, v6, v5},
v7);
insert_or_compare_vertex_adjacency(vertex_lexigraphical_adjacency,
reverse_vertex_adjacency,
{v1, v2, v5},
v0);
}
}
}

2
network_process/src/prim_gen/extract_mesh.cpp
View File

@ -7,7 +7,7 @@ void extract_iso_mesh(const std::array<uint32_t, 3>& tet_active_s
const stl_vector_mp<std::array<uint32_t, 4>>& tetrahedrons,
const stl_vector_mp<uint32_t>& tetrahedron_active_subface_start_index,
const stl_vector_mp<uint32_t>& active_subface_indices,
const Eigen::MatrixXd& vertex_infos,
const Eigen::Ref<const Eigen::MatrixXd> vertex_infos,
const flat_hash_map_mp<uint32_t, uint32_t>& vertex_indices_mapping,
stl_vector_mp<Eigen::Vector3d>& iso_pts,
stl_vector_mp<iso_vertex_t>& iso_verts,

49
network_process/src/prim_gen/filter_tet_by_subface.cpp
View File

@ -15,10 +15,12 @@
// }
// };
void filter_tet_by_subface(const flat_hash_map_mp<uint32_t, stl_vector_mp<uint32_t>>& vertex_to_tet_mapping,
void filter_tet_by_subface(const btree_map_mp<uint32_t, stl_vector_mp<uint32_t>>& vertex_to_tet_mapping,
Eigen::Ref<Eigen::MatrixXd> vertex_infos,
flat_hash_map_mp<uint32_t, uint32_t>& vertex_indices_mapping,
stl_vector_mp<std::array<uint32_t, 4>>& tetrahedrons,
flat_hash_map_mp<uint32_t, uint32_t>& vertex_lexigraphical_adjacency,
const flat_hash_map_mp<uint32_t, stl_vector_mp<uint32_t>>& reverse_vertex_adjacency,
stl_vector_mp<uint32_t>& tetrahedron_active_subface_start_index,
stl_vector_mp<uint32_t>& active_subface_indices,
flat_hash_map_mp<uint32_t, stl_vector_mp<uint32_t>>& zero_vertex_to_incident_tet_mapping)
@ -88,16 +90,57 @@ void filter_tet_by_subface(const flat_hash_map_mp<uint32_t, stl_vector_mp<uint32
filtered_active_vertices.shrink_to_fit();
std::swap(filtered_tets, tetrahedrons);
// change vertex adjacency with filtered vertices, so that each vertex pair in adjacency map is connected directly
// without any intermediate vertices
std::sort(filtered_active_vertices.begin(), filtered_active_vertices.end());
auto end_iter = std::unique(filtered_active_vertices.begin(), filtered_active_vertices.end());
auto iter = filtered_active_vertices.begin();
stl_vector_mp<uint32_t*> prev_to_next_adjacency{};
uint32_t next_vertex_index{};
prev_to_next_adjacency.reserve(3);
for (auto i = 0; i < vertex_infos.rows(); ++i) {
if (*iter == i) { // the vertex is still active, skip it
++iter;
} else { // the vertex is filtered out, reconnect its prev to next
prev_to_next_adjacency.clear();
// the vertex at upper bound do not have reversed adjacency
if (auto iter = reverse_vertex_adjacency.find(i); iter != reverse_vertex_adjacency.end()) {
for (const auto& prev : iter->second) {
prev_to_next_adjacency.emplace_back(&vertex_lexigraphical_adjacency[prev]);
}
}
// also, the vertex at lower bound may not have adjacency
if (auto iter = vertex_lexigraphical_adjacency.find(i); iter != vertex_lexigraphical_adjacency.end()) {
next_vertex_index = iter->second;
} else {
next_vertex_index = std::numeric_limits<uint32_t>::max();
}
// reconnect all previous vertices to next vertex
for (auto prev : prev_to_next_adjacency) { *prev = next_vertex_index; }
}
}
iter = filtered_active_vertices.begin();
// remove filtered vertices from vertex_lexigraphical_adjacency
for (auto i = 0; i < vertex_infos.rows(); ++i) {
if (*iter == i) {
++iter;
} else {
vertex_lexigraphical_adjacency.erase(i);
}
}
auto vertex_count = std::distance(filtered_active_vertices.begin(), end_iter);
Eigen::MatrixXd filtered_vert_infos(vertex_count, vertex_infos.cols());
flat_hash_map_mp<uint32_t, uint32_t> filtered_vertex_lexigraphical_adjacency{};
auto filtered_vert_infos_iter = filtered_vert_infos.rowwise().begin();
for (auto iter = filtered_active_vertices.begin(); iter != end_iter; ++iter) {
iter = filtered_active_vertices.begin();
for (; iter != end_iter; ++iter) {
const auto vertex_index = *iter;
*filtered_vert_infos_iter = vertex_infos.row(vertex_index);
vertex_indices_mapping[vertex_index] = std::distance(filtered_active_vertices.begin(), iter);
filtered_vertex_lexigraphical_adjacency.emplace(vertex_index, vertex_indices_mapping.at(vertex_index));
filtered_vert_infos_iter++;
}
vertex_infos = filtered_vert_infos;
vertex_infos = std::move(filtered_vert_infos);
vertex_lexigraphical_adjacency = std::move(filtered_vertex_lexigraphical_adjacency);
}

37
network_process/src/process.cpp
View File

@ -15,6 +15,7 @@ ISNP_API void build_implicit_network_by_blobtree(const s_settings&
scene_bg_mesh_info_t scene_bg_mesh_info{};
stl_vector_mp<std::array<uint32_t, 4>> tetrahedrons{};
flat_hash_map_mp<uint32_t, uint32_t> vertex_lexigraphical_adjacency{};
stl_vector_mp<uint32_t> tetrahedron_active_subface_start_index{};
stl_vector_mp<uint32_t> active_subface_indices{};
stl_vector_mp<arrangement_t> tetrahedron_arrangements{};
@ -27,16 +28,23 @@ ISNP_API void build_implicit_network_by_blobtree(const s_settings&
Eigen::MatrixXd vertex_infos{};
flat_hash_map_mp<uint32_t, uint32_t> vertex_indices_mapping{};
{
flat_hash_map_mp<uint32_t, stl_vector_mp<uint32_t>> vertex_to_tet_mapping{};
btree_map_mp<uint32_t, stl_vector_mp<uint32_t>> vertex_to_tet_mapping{};
flat_hash_map_mp<uint32_t, stl_vector_mp<uint32_t>> reverse_vertex_adjacency{};
{
stl_vector_mp<grid_region> vertex_exist_regions{};
extract_vertex_infos(settings, tree, scene_bg_mesh_info, vertex_infos);
pair_tetrahedron(scene_bg_mesh_info, tetrahedrons, vertex_to_tet_mapping);
build_tetrahedron_and_adjacency(scene_bg_mesh_info,
tetrahedrons,
vertex_lexigraphical_adjacency,
reverse_vertex_adjacency,
vertex_to_tet_mapping);
}
filter_tet_by_subface(vertex_to_tet_mapping,
vertex_infos,
vertex_indices_mapping,
tetrahedrons,
vertex_lexigraphical_adjacency,
reverse_vertex_adjacency,
tetrahedron_active_subface_start_index,
active_subface_indices,
zero_vertex_to_incident_tet_mapping);
@ -68,6 +76,8 @@ ISNP_API void build_implicit_network_by_blobtree(const s_settings&
stl_vector_mp<stl_list_mp<iso_edge_t>> chains{};
stl_vector_mp<stl_vector_mp<uint32_t>> shells{};
stl_vector_mp<stl_vector_mp<uint32_t>> components{};
stl_vector_mp<stl_vector_mp<uint32_t>> arrangement_cells{};
stl_vector_mp<uint32_t> shell_to_cell{};
{
{
stl_vector_mp<stl_vector_mp<uint32_t>> edges_of_iso_face{};
@ -89,26 +99,17 @@ ISNP_API void build_implicit_network_by_blobtree(const s_settings&
patch_of_face,
half_patch_adj_list);
compute_shells_and_components(half_patch_adj_list, shells, shell_of_half_patch, components, component_of_patch);
}
// mixed topology connection and post process
if (components.size() == 1) // no nesting problem, each shell is an arrangement cell
{
output_vertices = std::move(iso_pts);
for (const auto& half_patch : shells[1]) {
for (const auto& face_id : patches[half_patch / 2]) {
const auto& face = iso_faces[face_id];
output_polygon_faces.insert(output_polygon_faces.end(),
std::make_move_iterator(face.vertex_indices.begin()),
std::make_move_iterator(face.vertex_indices.end()));
output_vertex_counts_of_face.emplace_back(face.vertex_indices.size());
}
}
arrangement_cells.reserve(shells.size());
for (uint32_t i = 0; i < shells.size(); ++i) { arrangement_cells.emplace_back(stl_vector_mp<uint32_t>{i}); }
} else {
stl_vector_mp<stl_vector_mp<uint32_t>> arrangement_cells{};
{
stl_vector_mp<std::pair<uint32_t, uint32_t>> shell_links{};
topo_ray_shooting(scene_bg_mesh_info,
tetrahedrons,
vertex_lexigraphical_adjacency,
tetrahedron_arrangements,
iso_verts,
iso_faces,
@ -121,11 +122,13 @@ ISNP_API void build_implicit_network_by_blobtree(const s_settings&
shell_links);
compute_arrangement_cells(static_cast<uint32_t>(shells.size()), shell_links, arrangement_cells);
}
{
stl_vector_mp<uint32_t> shell_to_cell(shells.size());
shell_to_cell.resize(shells.size());
for (uint32_t i = 0; i < arrangement_cells.size(); i++) {
for (auto shell : arrangement_cells[i]) shell_to_cell[shell] = i;
}
}
// post process
{
dynamic_bitset_mp<> active_cell_label{};
{
stl_vector_mp<dynamic_bitset_mp<>> cell_primitive_signs(tree.primitives.size(),

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