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mgm-tp1
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ça marche/compile pas parce que j'ai pas trouvé comment passer d'un halfedge au sommet de départ/arrivée et du halfedge au edge associé

This commit is contained in:
DylanVsn 2020-03-04 21:43:20 +01:00
parent 06adb5e51e
commit 5e4252da7e
1 changed files with 49 additions and 0 deletions
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49
mainwindow.cpp
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@ -1,6 +1,9 @@
#include "mainwindow.h"
#include "ui_mainwindow.h"
#include <vector>
#include <set>
using namespace std;
/* **** début de la partie à compléter **** */
void MainWindow::showSelections(MyMesh* _mesh)
@ -112,6 +115,52 @@ void MainWindow::showPath(MyMesh* _mesh, int v1, int v2)
displayMesh(_mesh);
}
int minimal_new(vector<ulong> dist, set<int> visited) {
long mini = LONG_MAX;
int mini_id = -1;
for (int i = 0; i < dist.size(); i++) {
if (visited.count(i) == 0 && dist[i] < mini) {
mini = dist[i];
mini_id = i;
}
}
return mini_id;
}
vector<EdgeHandle> meinDijkstra(MyMesh *_mesh, int v1, int v2) {
set<int> visited_nodes_id = {};
const int nb = _mesh->n_faces();
vector<ulong> dist_min (nb, ULONG_MAX);
vector<int> prec_hv_id (nb, -1);
dist_min[v1] = 0;
int current;
VertexHandle current_node;
uint distance;
while (visited_nodes_id.size() != nb) {
current = minimal_new(dist_min, visited_nodes_id);
visited_nodes_id.insert(current);
if (current == v2) break;
current_node = _mesh->vertex_handle(current);
for (auto voh_it = _mesh->voh_iter(current_node); voh_it.is_valid(); ++voh_it) {
distance = dist_min[current] + _mesh->valence(*voh_it);
//following = *voh_it->outgoingvertex;
if (distance < dist_min[following]) {
dist_min[successeur] = distance;
prec_hv_id[successeur] = *voh_it->idx;
}
}
}
vector<EdgeHandle> path;
if (prec_hv_id[v2] != -1) {
current = v2;
while (predecesseur[current] != -1) {
path.push_back(predecesseur[current].edge);
current = path.end()->incoming_node;
}
}
return path;
}
/* **** fin de la partie à compléter **** */