QString Scene_c3t3_item::toolTip() const {
return tr("<p><b>3D complex in a 3D triangulation</b></p>"
"<p>Number of vertices: %1<br />"
"Number of surface facets: %2<br />"
"Number of volume tetrahedra: %3</p>")
.arg(c3t3().triangulation().number_of_vertices())
.arg(c3t3().number_of_facets_in_complex())
.arg(c3t3().number_of_cells_in_complex());
}
void Scene_c3t3_item::export_facets_in_complex()
{
std::stringstream off_sstream;
c3t3().output_facets_in_complex_to_off(off_sstream);
std::string backup = off_sstream.str();
// Try to read .off in a polyhedron
Scene_polyhedron_item* item = new Scene_polyhedron_item;
if (!item->load(off_sstream))
{
delete item;
off_sstream.str(backup);
// Try to read .off in a polygon soup
Scene_polygon_soup_item* soup_item = new Scene_polygon_soup_item;
if (!soup_item->load(off_sstream)) {
delete soup_item;
return;
}
soup_item->setName(QString("%1_%2").arg(this->name()).arg("facets"));
last_known_scene->addItem(soup_item);
}
else{
item->setName(QString("%1_%2").arg(this->name()).arg("facets"));
last_known_scene->addItem(item);
}
}
Bbox bbox() const {
if(isEmpty())
return Bbox();
else {
CGAL::Bbox_3 result = c3t3().triangulation().finite_vertices_begin()->point().bbox();
for(Tr::Finite_vertices_iterator
vit = ++c3t3().triangulation().finite_vertices_begin(),
end = c3t3().triangulation().finite_vertices_end();
vit != end; ++vit)
{
result = result + vit->point().bbox();
}
return Bbox(result.xmin(), result.ymin(), result.zmin(),
result.xmax(), result.ymax(), result.zmax());
}
}
void Scene_c3t3_item::compute_bbox() const {
if (isEmpty())
_bbox = Bbox();
else {
CGAL::Bbox_3 result;
for (Tr::Finite_vertices_iterator
vit = ++c3t3().triangulation().finite_vertices_begin(),
end = c3t3().triangulation().finite_vertices_end();
vit != end; ++vit)
{
if(vit->in_dimension() == -1) continue;
result = result + vit->point().bbox();
}
_bbox = Bbox(result.xmin(), result.ymin(), result.zmin(),
result.xmax(), result.ymax(), result.zmax());
}
}
QString Scene_c3t3_item::toolTip() const {
int number_of_tets = 0;
for (Tr::Finite_cells_iterator
cit = c3t3().triangulation().finite_cells_begin(),
end = c3t3().triangulation().finite_cells_end();
cit != end; ++cit)
{
if (c3t3().is_in_complex(cit))
++number_of_tets;
}
return tr("<p><b>3D complex in a 3D triangulation</b></p>"
"<p>Number of vertices: %1<br />"
"Number of surface facets: %2<br />"
"Number of volume tetrahedra: %3</p>")
.arg(c3t3().triangulation().number_of_vertices())
.arg(c3t3().number_of_facets())
.arg(number_of_tets);
}
void Scene_c3t3_item::compute_bbox() const {
if (isEmpty())
_bbox = Bbox();
else {
CGAL::Bbox_3 result =
c3t3().cells_in_complex_begin()->vertex(0)->point().bbox();
for (C3t3::Cells_in_complex_iterator
cit = ++c3t3().cells_in_complex_begin(),
cend = c3t3().cells_in_complex_end();
cit != cend; ++cit)
{
result = result + cit->vertex(0)->point().bbox();
//only one vertex should be a satisfactory approximation
}
_bbox = Bbox(result.xmin(), result.ymin(), result.zmin(),
result.xmax(), result.ymax(), result.zmax());
}
}
void
Scene_c3t3_item::build_histogram()
{
#ifdef CGAL_MESH_3_DEMO_BIGGER_HISTOGRAM_WITH_WHITE_BACKGROUNG
// Create an histogram_ and display it
const int height = 280;
const int top_margin = 5;
const int left_margin = 20;
const int drawing_height = height - top_margin * 2;
const int width = 804;
const int cell_width = 4;
const int text_margin = 3;
const int text_height = 34;
histogram_ = QPixmap(width, height + text_height);
histogram_.fill(QColor(255, 255, 255));
#else
// Create an histogram_ and display it
const int height = 140;
const int top_margin = 5;
const int left_margin = 20;
const int drawing_height = height - top_margin * 2;
const int width = 402;
const int cell_width = 2;
const int text_margin = 3;
const int text_height = 20;
histogram_ = QPixmap(width, height + text_height);
histogram_.fill(QColor(192, 192, 192));
#endif
QPainter painter(&histogram_);
painter.setPen(Qt::black);
painter.setBrush(QColor(128, 128, 128));
//painter.setFont(QFont("Arial", 30));
// Build histogram_ data
double min_value, max_value;
std::vector<int> histo_data = create_histogram(c3t3(), min_value, max_value);
// Get maximum value (to normalize)
int max_size = 0;
for (std::vector<int>::iterator it = histo_data.begin(), end = histo_data.end();
it != end; ++it)
{
max_size = (std::max)(max_size, *it);
}
// colored histogram
int j = 0;
// draw
int i = left_margin;
for (std::vector<int>::iterator it = histo_data.begin(), end = histo_data.end();
it != end; ++it, i += cell_width)
{
int line_height = static_cast<int>(std::ceil(static_cast<double>(drawing_height)*
static_cast<double>(*it) / static_cast<double>(max_size)) + .5);
painter.fillRect(i,
drawing_height + top_margin - line_height,
cell_width,
line_height,
get_histogram_color(j++));
}
// draw bottom horizontal line
painter.setPen(Qt::blue);
painter.drawLine(QPoint(left_margin, drawing_height + top_margin),
QPoint(left_margin + static_cast<int>(histo_data.size())*cell_width,
drawing_height + top_margin));
// draw min value and max value
const int min_tr_width = static_cast<int>(2 * (std::floor(min_value)*cell_width + left_margin));
const int max_tr_width = static_cast<int>(
2 * ((histo_data.size() - std::floor(max_value))*cell_width + left_margin));
const int tr_y = drawing_height + top_margin + text_margin;
painter.setPen(get_histogram_color(min_value));
QRect min_text_rect(0, tr_y, min_tr_width, text_height);
painter.drawText(min_text_rect, Qt::AlignCenter, tr("%1").arg(min_value, 0, 'f', 1));
painter.setPen(get_histogram_color(max_value));
QRect max_text_rect(width - max_tr_width, tr_y, max_tr_width, text_height);
painter.drawText(max_text_rect, Qt::AlignCenter, tr("%1").arg(max_value, 0, 'f', 1));
}
bool isEmpty() const {
return c3t3().triangulation().number_of_vertices() == 0;
}