void Polyhedron_demo_mesh_simplification_plugin::on_actionSimplify_triggered()
{
const CGAL::Three::Scene_interface::Item_id index = scene->mainSelectionIndex();
Scene_polyhedron_item* item =
qobject_cast<Scene_polyhedron_item*>(scene->item(index));
if(item)
{
Polyhedron* pMesh = item->polyhedron();
// get option (#edges)
bool ok;
const int nb_edges =
QInputDialog::getInt(mw, tr("Stop condition"),
tr("Number of edges:"),
(int)(pMesh->size_of_halfedges () / 4), // default value: current #edges / 2
3, // min = one triangle
(int)pMesh->size_of_halfedges(), // max #edges
1, // step for the spinbox
&ok);
// check user cancellation
if(!ok)
return;
// simplify
QTime time;
time.start();
std::cout << "Simplify...";
QApplication::setOverrideCursor(Qt::WaitCursor);
namespace SMS = CGAL::Surface_mesh_simplification;
SMS::Count_stop_predicate< Polyhedron > stop(nb_edges); // target #edges
SMS::edge_collapse( *pMesh, stop,
CGAL::parameters::vertex_index_map(get(CGAL::vertex_external_index,*pMesh))
.halfedge_index_map(get(CGAL::halfedge_external_index,*pMesh)));
std::cout << "ok (" << time.elapsed() << " ms, "
<< pMesh->size_of_halfedges() / 2 << " edges)" << std::endl;
// update scene
item->invalidateOpenGLBuffers();
scene->itemChanged(index);
QApplication::restoreOverrideCursor();
}
}
void Polyhedron_demo_subdivision_methods_plugin::on_actionLoop_triggered()
{
CGAL::Three::Scene_interface::Item_id index = scene->mainSelectionIndex();
Scene_polyhedron_item* item =
qobject_cast<Scene_polyhedron_item*>(scene->item(index));
if(!item) return;
Polyhedron* poly = item->polyhedron();
QTime time;
time.start();
std::cout << "Loop subdivision...";
QApplication::setOverrideCursor(Qt::WaitCursor);
CGAL::Subdivision_method_3::Loop_subdivision(*poly, 1);
std::cout << "ok (" << time.elapsed() << " ms)" << std::endl;
QApplication::restoreOverrideCursor();
item->invalidateOpenGLBuffers();
scene->itemChanged(item);
}
