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#include "config.h"
#include "Scene_points_with_normal_item.h"
#include <CGAL/Three/CGAL_Lab_plugin_helper.h>
#include <CGAL/Three/CGAL_Lab_plugin_interface.h>
#include <CGAL/Three/Scene_group_item.h>
#include <CGAL/cluster_point_set.h>
#include <CGAL/Timer.h>
#include <CGAL/Memory_sizer.h>
#include <CGAL/Random.h>
#include <QObject>
#include <QAction>
#include <QMainWindow>
#include <QApplication>
#include <QtPlugin>
#include <QMessageBox>
#include <QSpinBox>
#include <QDoubleSpinBox>
#include <QCheckBox>
#include <QMultipleInputDialog.h>
#include "run_with_qprogressdialog.h"
struct Clustering_functor
: public Functor_with_signal_callback
{
Point_set* points;
Point_set::Property_map<std::size_t> cluster_map;
const double neighbor_radius;
std::shared_ptr<std::size_t> result;
Clustering_functor (Point_set* points,
const double neighbor_radius,
Point_set::Property_map<std::size_t> cluster_map)
: points (points), cluster_map (cluster_map),
neighbor_radius (neighbor_radius),
result (new std::size_t(0)) { }
void operator()()
{
*result = CGAL::cluster_point_set (*points, cluster_map,
points->parameters().neighbor_radius(neighbor_radius).
callback(*(this->callback())));
}
};
using namespace CGAL::Three;
class CGAL_Lab_point_set_clustering_plugin :
public QObject,
public CGAL_Lab_plugin_helper
{
Q_OBJECT
Q_INTERFACES(CGAL::Three::CGAL_Lab_plugin_interface)
Q_PLUGIN_METADATA(IID "com.geometryfactory.CGALLab.PluginInterface/1.0")
QAction* actionCluster;
public:
void init(QMainWindow* mainWindow, CGAL::Three::Scene_interface* scene_interface, Messages_interface*) {
scene = scene_interface;
mw = mainWindow;
actionCluster = new QAction(tr("Cluster Point Set"), mainWindow);
actionCluster->setObjectName("actionCluster");
actionCluster->setProperty("subMenuName","Point Set Processing");
autoConnectActions();
}
QList<QAction*> actions() const {
return QList<QAction*>() << actionCluster;
}
bool applicable(QAction*) const {
Scene_points_with_normal_item* item = qobject_cast<Scene_points_with_normal_item*>(scene->item(scene->mainSelectionIndex()));
return item;
}
public Q_SLOTS:
void on_actionCluster_triggered();
}; // end
void CGAL_Lab_point_set_clustering_plugin::on_actionCluster_triggered()
{
const CGAL::Three::Scene_interface::Item_id index = scene->mainSelectionIndex();
Scene_points_with_normal_item* item =
qobject_cast<Scene_points_with_normal_item*>(scene->item(index));
if(item)
{
// Gets point set
Point_set* points = item->point_set();
if(points == nullptr)
return;
QMultipleInputDialog dialog ("Clustering", mw);
QDoubleSpinBox* neighbor_radius = dialog.add<QDoubleSpinBox> ("Neighbor radius (0 = automatic):");
neighbor_radius->setRange (0, 10000000);
neighbor_radius->setValue (0);
QSpinBox* min_nb = dialog.add<QSpinBox> ("Minimum number of points per cluster:");
min_nb->setRange (1, 10000000);
min_nb->setValue (1);
QCheckBox* add_property = dialog.add<QCheckBox> ("Add a \"cluster\" property to the input item");
add_property->setChecked (true);
QCheckBox* gen_color = dialog.add<QCheckBox> ("Generate one colored point set");
gen_color->setChecked (true);
QCheckBox* gen_sub = dialog.add<QCheckBox> ("Generate N point subsets");
gen_sub->setChecked (false);
if (!dialog.exec())
return;
QApplication::setOverrideCursor(Qt::BusyCursor);
QApplication::processEvents();
CGAL::Real_timer task_timer; task_timer.start();
Point_set::Property_map<std::size_t> cluster_map;
if (add_property->isChecked())
cluster_map = points->add_property_map<std::size_t> ("cluster_map").first;
else
// Use long name to avoid overwriting potentially existing map
cluster_map = points->add_property_map<std::size_t> ("cluster_point_set_property_map").first;
// Default value
if (neighbor_radius->value() == 0)
{
neighbor_radius->setRange (-1, 10000000);
neighbor_radius->setValue(-1);
}
// Computes average spacing
Clustering_functor functor (points, neighbor_radius->value(), cluster_map);
run_with_qprogressdialog (functor, "Clustering...", mw);
std::size_t nb_clusters = *functor.result;
Scene_group_item* group = nullptr;
std::vector<Scene_points_with_normal_item*> new_items;
if (gen_sub->isChecked())
{
group = new Scene_group_item(QString("%1 (clusters)").arg(item->name()));
scene->addItem(group);
new_items.reserve (nb_clusters);
for (std::size_t i = 0; i < nb_clusters; ++ i)
{
Scene_points_with_normal_item* new_item = new Scene_points_with_normal_item;
new_item->point_set()->copy_properties (*points);
CGAL::Random rand((unsigned int)(i));
unsigned char r, g, b;
r = static_cast<unsigned char>(64 + rand.get_int(0, 192));
g = static_cast<unsigned char>(64 + rand.get_int(0, 192));
b = static_cast<unsigned char>(64 + rand.get_int(0, 192));
new_item->setRgbColor(r, g, b);
new_item->setName (QString("Cluster %1 of %2").arg(i).arg(item->name()));
new_items.push_back (new_item);
}
}
std::vector<std::size_t> cluster_size (nb_clusters, 0);
for (Point_set::Index idx : *points)
{
if (gen_sub->isChecked())
new_items[cluster_map[idx]]->point_set()->insert (*points, idx);
cluster_size[cluster_map[idx]] ++;
}
if (gen_color->isChecked())
{
Scene_points_with_normal_item* colored;
Point_set::Property_map<unsigned char> red, green, blue;
colored = new Scene_points_with_normal_item;
colored->setName (QString("%1 (clustering)").arg(item->name()));
red = colored->point_set()->add_property_map<unsigned char>("red", 0).first;
green = colored->point_set()->add_property_map<unsigned char>("green", 0).first;
blue = colored->point_set()->add_property_map<unsigned char>("blue", 0).first;
colored->point_set()->check_colors();
colored->point_set()->reserve (points->size());
for (Point_set::Index idx : *points)
{
Point_set::Index iidx = *(colored->point_set()->insert (points->point(idx)));
if (cluster_size[cluster_map[idx]] >= std::size_t(min_nb->value()))
{
CGAL::Random rand((unsigned int)(cluster_map[idx] + 1));
unsigned char r, g, b;
r = static_cast<unsigned char>(64 + rand.get_int(0, 192));
g = static_cast<unsigned char>(64 + rand.get_int(0, 192));
b = static_cast<unsigned char>(64 + rand.get_int(0, 192));
red[iidx] = r;
green[iidx] = g;
blue[iidx] = b;
}
}
scene->addItem(colored);
}
if (gen_sub->isChecked())
{
for (Scene_points_with_normal_item* new_item : new_items)
{
if (new_item->point_set()->size() >= std::size_t(min_nb->value()))
{
scene->addItem(new_item);
scene->changeGroup (new_item, group);
}
else
delete new_item;
}
}
if (!add_property->isChecked())
points->remove_property_map (cluster_map);
std::size_t memory = CGAL::Memory_sizer().virtual_size();
std::cerr << "Number of clusters = " << nb_clusters << " ("
<< task_timer.time() << " seconds, "
<< (memory>>20) << " Mb allocated)"
<< std::endl;
QApplication::restoreOverrideCursor();
item->setVisible (false);
item->invalidateOpenGLBuffers();
scene->itemChanged(item);
}
}
#include "Point_set_clustering_plugin.moc"
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