ccolin/mod_geo-tp
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

optimize 2-ring traversal

Browse Source
This commit is contained in:
ccolin 2021-11-13 13:31:57 +01:00
parent 1d1f2c22f7
commit 1d88c993b9
2 changed files with 27 additions and 32 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

48
src/curvature.cpp
View File

@ -1,5 +1,6 @@
#include "curvature.h"
#include "util.h"
#include <OpenMesh/Core/Utils/PropertyManager.hh>
void Courbures::normales_locales() {
@ -9,7 +10,7 @@ void Courbures::normales_locales() {
MyMesh::Normal normal(0,0,0);
i = 0;
for (MyMesh::FaceHandle vf : _mesh.vf_range(vh)) {
i++ ;
i++;
normal += _mesh.calc_face_normal(vf);
}
if (i != 0) {
@ -21,43 +22,36 @@ void Courbures::normales_locales() {
}
std::vector<MyMesh::VertexHandle> Courbures::get_two_neighborhood(const MyMesh::VertexHandle vh) {
OpenMesh::VPropHandleT<bool> vprop_flag;
_mesh.add_property(vprop_flag, "vprop_flag");
void Courbures::get_two_neighborhood(std::vector<MyMesh::VertexHandle> &out,
const MyMesh::VertexHandle vh) {
auto flag_prop =
OpenMesh::getOrMakeProperty<VertexHandle, bool>(_mesh, "vprop_flag");
flag_prop.set_range(_mesh.vertices_begin(), _mesh.vertices_end(), false);
// Initialisation
for (VertexHandle vh : _mesh.vertices()) {
_mesh.property(vprop_flag, vh) = false;
}
// Circulateur sur le premier cercle
std::vector<MyMesh::VertexHandle> neigh, neigh2;
_mesh.property(vprop_flag, vh) = true;
// Parcours du 1-anneau
flag_prop[vh] = true;
for(VertexHandle vv : _mesh.vv_range(vh)) {
neigh.push_back(vv); // ajout du point à la liste
_mesh.property(vprop_flag, vv) = true;
out.push_back(vv); // ajout du point à la liste
flag_prop[vv] = true;
}
// Parcours du premier cercle et ajout du second cercle par circulateurs
for (size_t i = 0; i < neigh.size(); i++) {
MyMesh::VertexHandle vh = neigh.at(i) ;
for (VertexHandle vv : _mesh.vv_range(vh)) {
if (!_mesh.property(vprop_flag, vv)) {
neigh2.push_back(vv);
// Parcours du 1-anneau de chaque sommet du 1-anneau
size_t old_size = out.size();
for (size_t i = 0; i < old_size; i++) {
for (VertexHandle vv : _mesh.vv_range(out[i])) {
if (!flag_prop[vv]) {
out.push_back(vv);
flag_prop[vv] = true;
}
_mesh.property(vprop_flag, vv) = true;
}
}
// Concaténation des deux cercles
neigh.insert(neigh.end(), neigh2.begin(), neigh2.end());
_mesh.remove_property(vprop_flag);
return neigh;
}
QuadPatch Courbures::fit_quad(MyMesh::VertexHandle vh) {
std::vector<MyMesh::VertexHandle> neigh = get_two_neighborhood(vh);
static std::vector<MyMesh::VertexHandle> neigh;
neigh.clear();
get_two_neighborhood(neigh, vh);
if (neigh.size() < 5) throw "Quad fitting: not enough neighbors";
// Calcul de la matrice de changement de base

11
src/curvature.h
View File

@ -16,12 +16,13 @@ public:
Courbures(MyMesh &mesh) : _mesh(mesh) {}
void set_fixed_colors() ;
void normales_locales() ;
std::vector<MyMesh::VertexHandle> get_two_neighborhood(MyMesh::VertexHandle vh);
void set_fixed_colors();
void normales_locales();
void get_two_neighborhood(std::vector<MyMesh::VertexHandle> &out,
MyMesh::VertexHandle vh);
QuadPatch fit_quad(MyMesh::VertexHandle vh);
void compute_KH() ;
void set_K_colors() ;
void compute_KH();
void set_K_colors();
};