mirror of https://github.com/CGAL/cgal
85 lines
2.5 KiB
C++
85 lines
2.5 KiB
C++
#include "Polyhedron_demo_plugin_helper.h"
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#include "Polyhedron_demo_plugin_interface.h"
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#include "Scene_polyhedron_item.h"
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#include "Polyhedron_type.h"
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#include <QApplication>
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#include <QMainWindow>
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#include <QInputDialog>
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#include <QTime>
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#include <CGAL/Surface_mesh_simplification/HalfedgeGraph_Polyhedron_3.h>
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#include <CGAL/Surface_mesh_simplification/edge_collapse.h>
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#include <CGAL/Surface_mesh_simplification/Policies/Edge_collapse/Count_stop_predicate.h>
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class Polyhedron_demo_mesh_simplification_plugin :
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public QObject,
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public Polyhedron_demo_plugin_helper
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{
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Q_OBJECT
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Q_INTERFACES(Polyhedron_demo_plugin_interface)
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public:
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// used by Polyhedron_demo_plugin_helper
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QStringList actionsNames() const {
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return QStringList() << "actionSimplify";
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}
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bool applicable() const {
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return qobject_cast<Scene_polyhedron_item*>(scene->item(scene->mainSelectionIndex()));
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}
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public slots:
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void on_actionSimplify_triggered();
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}; // end Polyhedron_demo_mesh_simplification_plugin
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void Polyhedron_demo_mesh_simplification_plugin::on_actionSimplify_triggered()
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{
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const Scene_interface::Item_id index = scene->mainSelectionIndex();
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Scene_polyhedron_item* item =
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qobject_cast<Scene_polyhedron_item*>(scene->item(index));
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if(item)
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{
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Polyhedron* pMesh = item->polyhedron();
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// get option (#edges)
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bool ok;
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const int nb_edges =
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QInputDialog::getInteger(mw, tr("Stop condition"),
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tr("Number of edges:"),
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(int)(pMesh->size_of_halfedges () / 4), // default value: current #edges / 2
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3, // min = one triangle
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(int)pMesh->size_of_halfedges(), // max #edges
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1, // step for the spinbox
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&ok);
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// check user cancellation
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if(!ok)
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return;
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// simplify
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QTime time;
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time.start();
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std::cout << "Simplify...";
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QApplication::setOverrideCursor(Qt::WaitCursor);
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namespace SMS = CGAL::Surface_mesh_simplification;
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SMS::Count_stop_predicate< Polyhedron > stop(nb_edges); // target #edges
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SMS::edge_collapse( *pMesh, stop,
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CGAL::vertex_index_map(boost::get(CGAL::vertex_external_index,*pMesh))
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.edge_index_map(boost::get(CGAL::edge_external_index,*pMesh)));
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std::cout << "ok (" << time.elapsed() << " ms, "
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<< pMesh->size_of_halfedges() / 2 << " edges)" << std::endl;
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// update scene
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scene->itemChanged(index);
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QApplication::restoreOverrideCursor();
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}
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}
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Q_EXPORT_PLUGIN2(Polyhedron_demo_mesh_simplification_plugin, Polyhedron_demo_mesh_simplification_plugin)
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#include "Polyhedron_demo_mesh_simplification_plugin.moc"
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