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ImplicitSurfaceNetwork
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Zhicheng Wang 13 hours ago
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14 changed files with 136 additions and 75 deletions
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  1. 12
      network_process/include/connect_by_topo/patch_connectivity.hpp
  2. 6
      network_process/include/connect_by_topo/topology_ray_shooting.hpp
  3. 6
      network_process/include/post_topo/filter_polygon_faces.hpp
  4. 6
      network_process/include/post_topo/patch_propagation.hpp
  5. 38
      network_process/interface/fwd_types.hpp
  6. 9
      network_process/interface/process.hpp
  7. 14
      network_process/src/connect_by_topo/patch_connectivity.cpp
  8. 4
      network_process/src/connect_by_topo/topo_ray_shooting/find_extermal_edges.hpp
  9. 6
      network_process/src/connect_by_topo/topology_ray_shooting.cpp
  10. 49
      network_process/src/post_topo/filter_polygon_faces.cpp
  11. 6
      network_process/src/post_topo/patch_propagation.cpp
  12. 15
      network_process/src/process.cpp
  13. 1
      primitive_process/interface/base/primitive.hpp
  14. 39
      shared_module/container/wrapper/flat_index_group.hpp

12
network_process/include/connect_by_topo/patch_connectivity.hpp
View File

@ -24,7 +24,7 @@ void compute_patch_edges(const stl_vector_mp<polygon_face_t> &patch_faces,
void compute_patches(const stl_vector_mp<stl_vector_mp<uint32_t>> &edges_of_face,
const stl_vector_mp<iso_edge_t> &patch_edges,
const stl_vector_mp<polygon_face_t> &patch_faces,
flat_index_group_t &patches,
flat_index_group &patches,
stl_vector_mp<uint32_t> &patch_of_face_mapping);
/**
@ -41,9 +41,9 @@ void compute_chains(size_t iso_vert_count,
size_t patch_count,
stl_vector_mp<uint32_t> &patch_of_face,
stl_vector_mp<iso_edge_t> &patch_edges,
flat_index_group_t &chains,
flat_index_group &chains,
stl_vector_mp<iso_edge_t> &chain_representative_headers,
flat_index_group_t &chain_of_patch);
flat_index_group &chain_of_patch);
/**
* @brief compute shells and connected components of isosurfaces, and build maps: half-patch --> shell, patch --> component
@ -55,9 +55,9 @@ void compute_chains(size_t iso_vert_count,
* @note each shell is a list of half-patches, each component is a list of patches
*/
void compute_shells_and_components(const stl_vector_mp<stl_vector_mp<uint32_t>> &half_patch_adj_list,
flat_index_group_t &shells,
flat_index_group &shells,
stl_vector_mp<uint32_t> &shell_of_half_patch,
flat_index_group_t &components,
flat_index_group &components,
stl_vector_mp<uint32_t> &component_of_patch);
/**
@ -68,4 +68,4 @@ void compute_shells_and_components(const stl_vector_mp<stl_vector_mp<uint32_t>>
*/
void compute_arrangement_cells(uint32_t num_shell,
const stl_vector_mp<std::pair<uint32_t, uint32_t>> &shell_links,
flat_index_group_t &arrangement_cells);
flat_index_group &arrangement_cells);

6
network_process/include/connect_by_topo/topology_ray_shooting.hpp
View File

@ -15,10 +15,10 @@ void topo_ray_shooting(const scene_bg_mesh_info_t
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,
const flat_index_group_t &patches,
const flat_index_group &patches,
const stl_vector_mp<uint32_t> &patch_of_face,
const flat_index_group_t &shells,
const flat_index_group &shells,
const stl_vector_mp<uint32_t> &shell_of_half_patch,
const flat_index_group_t &components,
const flat_index_group &components,
const stl_vector_mp<uint32_t> &component_of_patch,
stl_vector_mp<std::pair<uint32_t, uint32_t>> &shell_links);

6
network_process/include/post_topo/filter_polygon_faces.hpp
View File

@ -4,10 +4,10 @@
// return: active face label
dynamic_bitset_mp<> filter_polygon_faces(const stl_vector_mp<polygon_face_t>& faces,
const flat_index_group_t& patches,
const flat_index_group_t& arrangement_cells,
const flat_index_group& patches,
const flat_index_group& arrangement_cells,
const stl_vector_mp<uint32_t>& shell_of_half_patch,
const flat_index_group_t& shells,
const flat_index_group& shells,
const stl_vector_mp<uint32_t>& shell_to_cell,
const dynamic_bitset_mp<>& active_cell_label,
stl_vector_mp<uint32_t>& output_polygon_faces,

6
network_process/include/post_topo/patch_propagation.hpp
View File

@ -6,10 +6,10 @@
void propagate_subface_labels(const baked_blobtree_t& tree,
const stl_vector_mp<polygon_face_t>& faces,
const flat_index_group_t& patches,
const flat_index_group_t& arrangement_cells,
const flat_index_group& patches,
const flat_index_group& arrangement_cells,
const stl_vector_mp<uint32_t>& shell_of_half_patch,
const flat_index_group_t& shells,
const flat_index_group& shells,
const stl_vector_mp<uint32_t>& shell_to_cell,
// in turn: [subface_index][cell_index] = sign
stl_vector_mp<dynamic_bitset_mp<>>& cell_subface_signs);

38
network_process/interface/fwd_types.hpp
View File

@ -4,6 +4,7 @@
#include <container/hashmap.hpp>
#include <container/btree.hpp>
#include <container/stl_alias.hpp>
#include <container/wrapper/flat_index_group.hpp>
#include <math/math_defs.hpp>
#include <data/data_center.hpp>
@ -264,39 +265,4 @@ struct equal_to<pod_key_t<N>> {
return static_cast<std::array<uint64_t, N>>(k1) == static_cast<std::array<uint64_t, N>>(k2);
}
};
} // namespace std
// ==============================================================================
struct flat_index_group_t {
stl_vector_mp<uint32_t> index_group{}; /// a list of indices in the group
stl_vector_mp<uint32_t> start_indices{}; /// a list of start indices for each group in the flat index group
inline size_t size() const { return start_indices.size() - 1; }
template <typename F>
inline void foreach (F&& f) const
{
for (uint32_t group_idx = 0; group_idx < size(); ++group_idx) {
for (uint32_t elem_idx = 0; elem_idx < start_indices[group_idx + 1] - start_indices[group_idx]; ++elem_idx) {
f(group_idx, elem_idx, index_group[start_indices[group_idx] + elem_idx]);
}
}
}
template <typename F>
inline void group_foreach(F&& f) const
{
for (uint32_t group_idx = 0; group_idx < size(); ++group_idx) {
f(group_idx, start_indices[group_idx], start_indices[group_idx + 1]);
}
}
template <typename F>
inline void loop_on_group(uint32_t group_idx, F&& f) const
{
for (uint32_t elem_idx = 0; elem_idx < start_indices[group_idx + 1] - start_indices[group_idx]; ++elem_idx) {
f(elem_idx, index_group[start_indices[group_idx] + elem_idx]);
}
}
};
} // namespace std

9
network_process/interface/process.hpp
View File

@ -4,6 +4,15 @@
#include "settings.h"
// each active subface should have one structure as below
struct parametric_plane {
stl_vector_mp<Eigen::Vector2d> chain_vertices{};
flat_index_group chains{};
stl_vector_mp<uint32_t> singularity_vertices{}; // i.e. intersection of chains
stl_vector_mp<uint32_t> polar_vertices{}; // i.e. min/max x/y around 2 connecting vertices
stl_vector_mp<uint32_t> parallel_start_vertices{}; // i.e. edge {v, v + 1} is parallel to x/y axis
};
ISNP_API void build_implicit_network_by_blobtree(const s_settings& settings,
const baked_blobtree_t& tree,
stl_vector_mp<Eigen::Vector3d>& output_vertices,

14
network_process/src/connect_by_topo/patch_connectivity.cpp
View File

@ -44,7 +44,7 @@ void compute_patch_edges(const stl_vector_mp<polygon_face_t>& patch_faces,
void compute_patches(const stl_vector_mp<stl_vector_mp<uint32_t>>& edges_of_face,
const stl_vector_mp<iso_edge_t>& patch_edges,
const stl_vector_mp<polygon_face_t>& patch_faces,
flat_index_group_t& patches,
flat_index_group& patches,
stl_vector_mp<uint32_t>& patch_of_face_mapping)
{
stl_vector_mp<bool> visited_face(edges_of_face.size(), false);
@ -84,9 +84,9 @@ void compute_chains(size_t iso_vert_count,
size_t patch_count,
stl_vector_mp<uint32_t>& patch_of_face,
stl_vector_mp<iso_edge_t>& patch_edges,
flat_index_group_t& chains,
flat_index_group& chains,
stl_vector_mp<iso_edge_t>& chain_representative_headers,
flat_index_group_t& chain_of_patch)
flat_index_group& chain_of_patch)
{
stl_vector_mp<stl_vector_mp<uint32_t>> non_manifold_edges_of_vert{};
stl_vector_mp<uint32_t> non_manifold_edges{};
@ -209,9 +209,9 @@ void compute_chains(size_t iso_vert_count,
}
void compute_shells_and_components(const stl_vector_mp<stl_vector_mp<uint32_t>>& half_patch_adj_list,
flat_index_group_t& shells,
flat_index_group& shells,
stl_vector_mp<uint32_t>& shell_of_half_patch,
flat_index_group_t& components,
flat_index_group& components,
stl_vector_mp<uint32_t>& component_of_patch)
{
const auto num_patch = half_patch_adj_list.size() / 2;
@ -298,7 +298,7 @@ void compute_shells_and_components(const stl_vector_mp<stl_vector_mp<uint32_t>>&
void compute_arrangement_cells(uint32_t num_shell,
const stl_vector_mp<std::pair<uint32_t, uint32_t>>& shell_links,
flat_index_group_t& arrangement_cells)
flat_index_group& arrangement_cells)
{
// build shell adjacency list
uint32_t sink_shell = num_shell;
@ -343,7 +343,7 @@ void compute_arrangement_cells(uint32_t
}
// remove sink shell from arrangement cells
flat_index_group_t sink_free_cells{};
flat_index_group sink_free_cells{};
sink_free_cells.index_group.reserve(arrangement_cells.index_group.size());
sink_free_cells.start_indices.reserve(arrangement_cells.size() + 1);
sink_free_cells.start_indices.emplace_back(0);

4
network_process/src/connect_by_topo/topo_ray_shooting/find_extermal_edges.hpp
View File

@ -7,8 +7,8 @@ static inline 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,
const flat_index_group_t &patches,
const flat_index_group_t &components,
const flat_index_group &patches,
const flat_index_group &components,
const stl_vector_mp<uint32_t> &component_of_patch,
const flat_hash_map_mp<compact_bg_mesh_coord_t, compact_bg_mesh_coord_t> &next_vert,
// extremal edge of component i is stored at position [2*i], [2*i+1]

6
network_process/src/connect_by_topo/topology_ray_shooting.cpp
View File

@ -10,11 +10,11 @@ void topo_ray_shooting(const scene_bg_mesh_info_t
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,
const flat_index_group_t &patches,
const flat_index_group &patches,
const stl_vector_mp<uint32_t> &patch_of_face,
const flat_index_group_t &shells,
const flat_index_group &shells,
const stl_vector_mp<uint32_t> &shell_of_half_patch,
const flat_index_group_t &components,
const flat_index_group &components,
const stl_vector_mp<uint32_t> &component_of_patch,
stl_vector_mp<std::pair<uint32_t, uint32_t>> &shell_links)
{

49
network_process/src/post_topo/filter_polygon_faces.cpp
View File

@ -4,15 +4,58 @@
// ===========================================================================================================
void collect_active_prims(const flat_index_group& patches,
const flat_index_group& chain_of_patch,
const flat_index_group& arrangement_cells,
const stl_vector_mp<uint32_t>& shell_of_half_patch,
const flat_index_group& shells,
const stl_vector_mp<uint32_t>& shell_to_cell,
const dynamic_bitset_mp<>& active_cell_label,
dynamic_bitset_mp<>& active_patch_label,
dynamic_bitset_mp<>& patch_sign_label,
dynamic_bitset_mp<>& active_chain_label)
{
stl_vector_mp<bool> visited_cells(arrangement_cells.size(), false);
std::queue<uint32_t> Q{};
for (uint32_t i = 0; i < arrangement_cells.size(); ++i) {
if (active_cell_label[i]) {
Q.emplace(i);
break;
}
}
while (!Q.empty()) {
const auto cell_index = Q.front();
Q.pop();
if (!visited_cells[cell_index] && active_cell_label[cell_index]) {
visited_cells[cell_index] = true;
arrangement_cells.loop_on_group(cell_index, [&](uint32_t _, uint32_t shell_index) {
// it is secured that one shell cell cannot have a pair of half patches with same patch index
shells.loop_on_group(shell_index, [&](uint32_t _, uint32_t half_patch_index) {
const auto patch_index = half_patch_index >> 1;
active_patch_label[patch_index].flip();
patch_sign_label[patch_index] = ((half_patch_index & 1) == 0);
chain_of_patch.loop_on_group(patch_index, [&](uint32_t _, uint32_t chain_index) {
active_chain_label[chain_index].set();
});
auto oppose_cell = shell_to_cell[shell_of_half_patch[(half_patch_index & 1) == 1 ? (half_patch_index + 1)
: (half_patch_index - 1)]];
if (active_cell_label[oppose_cell] && !visited_cells[oppose_cell]) Q.emplace(oppose_cell);
});
});
}
}
}
// ===========================================================================================================
dynamic_bitset_mp<> filter_polygon_faces(const stl_vector_mp<polygon_face_t>& faces,
const flat_index_group_t& patches,
const flat_index_group_t& arrangement_cells,
const flat_index_group& patches,
const flat_index_group& arrangement_cells,
const stl_vector_mp<uint32_t>& shell_of_half_patch,
const flat_index_group_t& shells,
const flat_index_group& shells,
const stl_vector_mp<uint32_t>& shell_to_cell,
const dynamic_bitset_mp<>& active_cell_label,
stl_vector_mp<uint32_t>& output_polygon_faces,

6
network_process/src/post_topo/patch_propagation.cpp
View File

@ -5,10 +5,10 @@
void propagate_subface_labels(const baked_blobtree_t& tree,
const stl_vector_mp<polygon_face_t>& faces,
const flat_index_group_t& patches,
const flat_index_group_t& arrangement_cells,
const flat_index_group& patches,
const flat_index_group& arrangement_cells,
const stl_vector_mp<uint32_t>& shell_of_half_patch,
const flat_index_group_t& shells,
const flat_index_group& shells,
const stl_vector_mp<uint32_t>& shell_to_cell,
stl_vector_mp<dynamic_bitset_mp<>>& cell_subface_signs)
{

15
network_process/src/process.cpp
View File

@ -71,13 +71,13 @@ ISNP_API void build_implicit_network_by_blobtree(const s_settings&
stl_vector_mp<uint32_t> patch_of_face(iso_faces.size());
stl_vector_mp<uint32_t> shell_of_half_patch{};
stl_vector_mp<uint32_t> component_of_patch{};
flat_index_group_t patches{};
flat_index_group_t chains{};
flat_index_group_t shells{};
flat_index_group_t components{};
flat_index_group_t arrangement_cells{};
flat_index_group patches{};
flat_index_group chains{};
flat_index_group shells{};
flat_index_group components{};
flat_index_group arrangement_cells{};
stl_vector_mp<uint32_t> shell_to_cell{};
flat_index_group_t chain_of_patch{};
flat_index_group chain_of_patch{};
{
stl_vector_mp<iso_edge_t> chain_representative_headers{};
{
@ -160,6 +160,9 @@ ISNP_API void build_implicit_network_by_blobtree(const s_settings&
}
active_cell_label = filter_cells_by_boolean(tree, cell_primitive_signs);
}
dynamic_bitset_mp<> active_patch_label(patches.size(), false);
dynamic_bitset_mp<> patch_sign_label(patches.size(), false);
filter_polygon_faces(iso_faces,
patches,
arrangement_cells,

1
primitive_process/interface/base/primitive.hpp
View File

@ -6,6 +6,7 @@
#include <utils/marked_ptr.hpp>
#include <container/stl_alias.hpp>
#include <container/dynamic_bitset.hpp>
#include <container/wrapper/flat_index_group.hpp>
#include <primitive_descriptor.h>
#include <data/data_type.hpp>

39
shared_module/container/wrapper/flat_index_group.hpp
View File

@ -0,0 +1,39 @@
#pragma once
#include "../stl_alias.hpp"
struct flat_index_group {
stl_vector_mp<uint32_t> index_group{}; /// a list of indices in the group
stl_vector_mp<uint32_t> start_indices{}; /// a list of start indices for each group in the flat index group
inline size_t size() const { return start_indices.size() - 1; }
// f(group_index, element_index_in_group, elemenet)
template <typename F>
inline void foreach (F&& f) const
{
for (uint32_t group_idx = 0; group_idx < size(); ++group_idx) {
for (uint32_t elem_idx = 0; elem_idx < start_indices[group_idx + 1] - start_indices[group_idx]; ++elem_idx) {
f(group_idx, elem_idx, index_group[start_indices[group_idx] + elem_idx]);
}
}
}
// f(group_index, group_start_index, group_end_index)
template <typename F>
inline void group_foreach(F&& f) const
{
for (uint32_t group_idx = 0; group_idx < size(); ++group_idx) {
f(group_idx, start_indices[group_idx], start_indices[group_idx + 1]);
}
}
// f(element_index_in_group, element)
template <typename F>
inline void loop_on_group(uint32_t group_idx, F&& f) const
{
for (uint32_t elem_idx = 0; elem_idx < start_indices[group_idx + 1] - start_indices[group_idx]; ++elem_idx) {
f(elem_idx, index_group[start_indices[group_idx] + elem_idx]);
}
}
};
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