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3 Commits

Author SHA1 Message Date
0d285db809 change view controls 2021-11-13 13:32:13 +01:00
1d88c993b9 optimize 2-ring traversal 2021-11-13 13:31:57 +01:00
1d1f2c22f7 lower the quadratic patch resolution 2021-11-13 13:31:31 +01:00
4 changed files with 40 additions and 44 deletions

View File

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

View File

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

View File

@ -103,7 +103,7 @@ void MeshViewer::removeMesh(const MyMesh &mesh) {
void MeshViewer::mousePressEvent(QMouseEvent *e) { void MeshViewer::mousePressEvent(QMouseEvent *e) {
if (e->button() == Qt::LeftButton) { if (e->button() == Qt::MiddleButton) {
mouse_pos = e->pos(); mouse_pos = e->pos();
} }
} }
@ -116,7 +116,7 @@ void MeshViewer::mouseReleaseEvent(QMouseEvent *e) {
void MeshViewer::mouseMoveEvent(QMouseEvent *e) { void MeshViewer::mouseMoveEvent(QMouseEvent *e) {
if (e->buttons() & Qt::LeftButton) { if (e->buttons() & Qt::MiddleButton) {
QPoint delta = e->pos() - mouse_pos; QPoint delta = e->pos() - mouse_pos;
rot = rot_start; rot = rot_start;
rot.rotate(delta.x() / 5., 0, 1, 0); rot.rotate(delta.x() / 5., 0, 1, 0);

View File

@ -2,6 +2,7 @@
MyMesh tesselate_quad_patch(QuadPatch q, MyMesh mesh, VertexHandle vh) { MyMesh tesselate_quad_patch(QuadPatch q, MyMesh mesh, VertexHandle vh) {
const size_t patch_divs = 8;
MyMesh patch; MyMesh patch;
Eigen::Vector3d point Eigen::Vector3d point
(mesh.point(vh)[0], mesh.point(vh)[1], mesh.point(vh)[2]); (mesh.point(vh)[0], mesh.point(vh)[1], mesh.point(vh)[2]);
@ -17,10 +18,10 @@ MyMesh tesselate_quad_patch(QuadPatch q, MyMesh mesh, VertexHandle vh) {
ymin = std::min(ymin, point[1]); ymin = std::min(ymin, point[1]);
ymax = std::max(ymax, point[1]); ymax = std::max(ymax, point[1]);
} }
double xstep = (xmax-xmin)/64.; double xstep = (xmax-xmin)/static_cast<double>(patch_divs);
double ystep = (ymax-ymin)/64.; double ystep = (ymax-ymin)/static_cast<double>(patch_divs);
for (size_t y = 0; y < 64; y++) { for (size_t y = 0; y < patch_divs; y++) {
for (size_t x = 0; x < 64; x++) { for (size_t x = 0; x < patch_divs; x++) {
double dx = xmin + x * xstep; double dx = xmin + x * xstep;
double dy = ymin + y * ystep; double dy = ymin + y * ystep;
Eigen::Vector3d point(dx, dy, -q(dx, dy)); Eigen::Vector3d point(dx, dy, -q(dx, dy));
@ -31,14 +32,14 @@ MyMesh tesselate_quad_patch(QuadPatch q, MyMesh mesh, VertexHandle vh) {
for (VertexHandle vhi : patch.vertices()) { for (VertexHandle vhi : patch.vertices()) {
patch.set_color(vhi, MyMesh::Color(0, 1, .2)); patch.set_color(vhi, MyMesh::Color(0, 1, .2));
size_t i = vhi.idx(); size_t i = vhi.idx();
size_t x = i % 64; size_t x = i % patch_divs;
size_t y = i / 64; size_t y = i / patch_divs;
if (x == 63 || y == 63) continue; if (x == patch_divs - 1 || y == patch_divs - 1) continue;
patch.add_face(vhi, patch.vertex_handle(i + 64), patch.add_face(vhi, patch.vertex_handle(i + patch_divs),
patch.vertex_handle(i + 1)); patch.vertex_handle(i + 1));
patch.add_face(patch.vertex_handle(i + 1), patch.add_face(patch.vertex_handle(i + 1),
patch.vertex_handle(i + 64), patch.vertex_handle(i + patch_divs),
patch.vertex_handle(i + 65)); patch.vertex_handle(i + patch_divs + 1));
} }
return patch; return patch;
} }