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cgal/Polyhedron/demo/Polyhedron/Scene_c3t3_item.cpp

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#include "config.h"
#include "Scene_spheres_item.h"
#include "Scene_c3t3_item.h"
#include "Scene_surface_mesh_item.h"
#include <QVector>
#include <QColor>
#include <QPixmap>
#include <QApplication>
#include <QPainter>
#include <QtCore/qglobal.h>
#include <QGuiApplication>
#include <QSlider>
#include <QWidgetAction>
#include <QKeyEvent>
#include <QMouseEvent>
#include <map>
#include <vector>
#include <CGAL/Three/Scene_interface.h>
#include <CGAL/Three/Triangle_container.h>
#include <CGAL/Three/Edge_container.h>
#include <CGAL/Three/Point_container.h>
#include <CGAL/Three/Three.h>
#include <CGAL/Real_timer.h>
#include <CGAL/Qt/manipulatedFrame.h>
#include <CGAL/Qt/qglviewer.h>
#include <boost/function_output_iterator.hpp>
#include <CGAL/AABB_tree.h>
#include <CGAL/AABB_traits.h>
#include <CGAL/AABB_triangulation_3_cell_primitive.h>
#include <CGAL/IO/facets_in_complex_3_to_triangle_mesh.h>
#include "Scene_polygon_soup_item.h"
typedef CGAL::AABB_triangulation_3_cell_primitive<EPICK,
C3t3::Triangulation> Primitive;
typedef CGAL::AABB_traits<EPICK, Primitive> Traits;
typedef CGAL::AABB_tree<Traits> Tree;
typedef Tree::Point_and_primitive_id Point_and_primitive_id;
using namespace CGAL::Three;
typedef Triangle_container Tc;
typedef Edge_container Ec;
typedef Point_container Pc;
typedef Viewer_interface Vi;
// The special Scene_item only for triangles
class Scene_intersection_item : public CGAL::Three::Scene_item_rendering_helper
{
Q_OBJECT
public :
Scene_intersection_item(Scene_c3t3_item* parent)
:is_fast(false)
{
setParent(parent);
alphaSlider = NULL;
m_alpha = 1.0f;
setTriangleContainer(0, new Tc(Vi::PROGRAM_C3T3, false));
setEdgeContainer(0, new Ec(Vi::PROGRAM_NO_SELECTION, false));
}
bool isFinite() const Q_DECL_OVERRIDE{ return false; }
~Scene_intersection_item()
{
if(alphaSlider)
delete alphaSlider;
}
void compute_bbox() const Q_DECL_OVERRIDE{}
void gl_initialization(Vi* viewer)
{
if(!isInit(viewer))
initGL(viewer);
computeElements();
initializeBuffers(viewer);
}
void init_vectors(
std::vector<float> *p_vertices,
std::vector<float> *p_normals,
std::vector<float> *p_edges,
std::vector<float> *p_colors,
std::vector<float> *p_bary)
{
vertices = p_vertices;
normals = p_normals;
edges = p_edges;
colors = p_colors;
barycenters = p_bary;
}
void setColor(QColor c) Q_DECL_OVERRIDE
{
qobject_cast<Scene_c3t3_item*>(this->parent())->setColor(c);
Scene_item::setColor(c);
}
// Indicates if rendering mode is supported
bool supportsRenderingMode(RenderingMode m) const Q_DECL_OVERRIDE{
return (m != Gouraud && m != PointsPlusNormals && m != Points && m != ShadedPoints);
}
void computeElements() const Q_DECL_OVERRIDE
{
getTriangleContainer(0)->reset_vbos(ALL);
getEdgeContainer(0)->reset_vbos(ALL);
getTriangleContainer(0)->allocate(Tc::Flat_vertices,
vertices->data(), static_cast<int>(vertices->size()*sizeof(float)));
getTriangleContainer(0)->allocate(Tc::Flat_normals, normals->data(),
static_cast<int>(normals->size()*sizeof(float)));
getTriangleContainer(0)->allocate(Tc::FColors, colors->data(),
static_cast<int>(colors->size()*sizeof(float)));
getTriangleContainer(0)->allocate(Tc::Facet_centers, barycenters->data(),
static_cast<int>(barycenters->size()*sizeof(float)));
getEdgeContainer(0)->allocate(Ec::Vertices, edges->data(),
static_cast<int>(edges->size()*sizeof(float)));
setBuffersFilled(true);
}
void initializeBuffers(CGAL::Three::Viewer_interface *viewer)const Q_DECL_OVERRIDE
{
//vao containing the data for the facets
{
getTriangleContainer(0)->initializeBuffers(viewer);
getTriangleContainer(0)->setFlatDataSize(vertices->size());
}
//vao containing the data for the lines
{
getEdgeContainer(0)->initializeBuffers(viewer);
getEdgeContainer(0)->setFlatDataSize(edges->size());
}
}
//Displays the item
void draw(CGAL::Three::Viewer_interface* viewer) const Q_DECL_OVERRIDE
{
if(is_fast)
return;
if(!alphaSlider)
{
alphaSlider = new QSlider(::Qt::Horizontal);
alphaSlider->setMinimum(0);
alphaSlider->setMaximum(255);
alphaSlider->setValue(255);
}
viewer->makeCurrent();
const EPICK::Plane_3& plane = qobject_cast<Scene_c3t3_item*>(this->parent())->plane();
float shrink_factor = qobject_cast<Scene_c3t3_item*>(this->parent())->getShrinkFactor();
QVector4D cp(-plane.a(), -plane.b(), -plane.c(), -plane.d());
getTriangleContainer(0)->setPlane(cp);
getTriangleContainer(0)->setShrinkFactor(shrink_factor);
// positions_poly is also used for the faces in the cut plane
// and changes when the cut plane is moved
getTriangleContainer(0)->setAlpha(alpha());
getTriangleContainer(0)->draw(viewer, false);
}
void drawEdges(CGAL::Three::Viewer_interface* viewer) const Q_DECL_OVERRIDE
{
if(is_fast)
return;
const EPICK::Plane_3& plane = qobject_cast<Scene_c3t3_item*>(this->parent())->plane();
QVector4D cp(-plane.a(), -plane.b(), -plane.c(), -plane.d());
getEdgeContainer(0)->setPlane(cp);
getEdgeContainer(0)->setColor(QColor(Qt::black));
getEdgeContainer(0)->draw(viewer, true);
}
void setFast(bool b)
{
is_fast = b;
}
void addTriangle(const Tr::Bare_point& pa, const Tr::Bare_point& pb,
const Tr::Bare_point& pc, const CGAL::Color color)
{
const CGAL::qglviewer::Vec offset = Three::mainViewer()->offset();
Geom_traits::Vector_3 n = cross_product(pb - pa, pc - pa);
n = n / CGAL::sqrt(n*n);
for (int i = 0; i<3; i++)
{
normals->push_back(n.x());
normals->push_back(n.y());
normals->push_back(n.z());
}
vertices->push_back(pa.x()+offset.x);
vertices->push_back(pa.y()+offset.y);
vertices->push_back(pa.z()+offset.z);
vertices->push_back(pb.x()+offset.x);
vertices->push_back(pb.y()+offset.y);
vertices->push_back(pb.z()+offset.z);
vertices->push_back(pc.x()+offset.x);
vertices->push_back(pc.y()+offset.y);
vertices->push_back(pc.z()+offset.z);
edges->push_back(pa.x()+offset.x);
edges->push_back(pa.y()+offset.y);
edges->push_back(pa.z()+offset.z);
edges->push_back(pb.x()+offset.x);
edges->push_back(pb.y()+offset.y);
edges->push_back(pb.z()+offset.z);
edges->push_back(pb.x()+offset.x);
edges->push_back(pb.y()+offset.y);
edges->push_back(pb.z()+offset.z);
edges->push_back(pc.x()+offset.x);
edges->push_back(pc.y()+offset.y);
edges->push_back(pc.z()+offset.z);
edges->push_back(pc.x()+offset.x);
edges->push_back(pc.y()+offset.y);
edges->push_back(pc.z()+offset.z);
edges->push_back(pa.x()+offset.x);
edges->push_back(pa.y()+offset.y);
edges->push_back(pa.z()+offset.z);
for(int i=0; i<3; i++)
{
colors->push_back((float)color.red()/255);
colors->push_back((float)color.green()/255);
colors->push_back((float)color.blue()/255);
barycenters->push_back((pa[0]+pb[0]+pc[0])/3.0 + offset.x);
barycenters->push_back((pa[1]+pb[1]+pc[1])/3.0 + offset.y);
barycenters->push_back((pa[2]+pb[2]+pc[2])/3.0 + offset.z);
}
}
Scene_item* clone() const Q_DECL_OVERRIDE{return 0;}
QString toolTip() const Q_DECL_OVERRIDE{return QString();}
QMenu* contextMenu() Q_DECL_OVERRIDE
{
QMenu* menu = Scene_item::contextMenu();
const char* prop_name = "Menu modified by Scene_surface_mesh_item.";
bool menuChanged = menu->property(prop_name).toBool();
if(!menuChanged) {
menu->addSeparator();
QMenu *container = new QMenu(tr("Alpha value"));
container->menuAction()->setProperty("is_groupable", true);
QWidgetAction *sliderAction = new QWidgetAction(0);
sliderAction->setDefaultWidget(alphaSlider);
connect(alphaSlider, &QSlider::valueChanged,
[this](){
setAlpha(alphaSlider->value());
redraw();
});
container->addAction(sliderAction);
menu->addMenu(container);
setProperty("menu_changed", true);
menu->setProperty(prop_name, true);
}
return menu;
}
float alpha() const Q_DECL_OVERRIDE
{
return m_alpha ;
}
void setAlpha(int a) Q_DECL_OVERRIDE
{
m_alpha = a / 255.0f;
redraw();
}
private:
//contains the data
mutable std::vector<float> *vertices;
mutable std::vector<float> *normals;
mutable std::vector<float> *edges;
mutable std::vector<float> *colors;
mutable std::vector<float> *barycenters;
mutable bool is_fast;
mutable QSlider* alphaSlider;
mutable float m_alpha ;
}; //end of class Scene_triangle_item
struct Scene_c3t3_item_priv {
typedef CGAL::qglviewer::ManipulatedFrame ManipulatedFrame;
Scene_c3t3_item_priv(Scene_c3t3_item* item)
: item(item), c3t3()
, frame(new ManipulatedFrame())
, data_item_(NULL)
, histogram_()
, surface_patch_indices_()
, subdomain_indices_()
, is_valid(true)
{
init_default_values();
tet_Slider = new QSlider(Qt::Horizontal);
tet_Slider->setMinimum(0);
tet_Slider->setMaximum(100);
tet_Slider->setValue(100);
invalidate_stats();
}
Scene_c3t3_item_priv(const C3t3& c3t3_, Scene_c3t3_item* item)
: item(item), c3t3(c3t3_)
, frame(new ManipulatedFrame())
, data_item_(NULL)
, histogram_()
, surface_patch_indices_()
, subdomain_indices_()
, is_valid(true)
{
init_default_values();
tet_Slider = new QSlider(Qt::Horizontal);
tet_Slider->setMinimum(0);
tet_Slider->setMaximum(100);
tet_Slider->setValue(100);
invalidate_stats();
}
~Scene_c3t3_item_priv()
{
if(alphaSlider)
delete alphaSlider;
c3t3.clear();
tree.clear();
if(frame)
{
delete frame;
frame = NULL;
delete tet_Slider;
}
}
void init_default_values() {
positions_lines.resize(0);
positions_poly.resize(0);
normals.resize(0);
s_vertex.resize(0);
s_normals.resize(0);
ws_vertex.resize(0);
need_changed = false;
spheres = NULL;
intersection = NULL;
spheres_are_shown = false;
cnc_are_shown = false;
is_aabb_tree_built = false;
alphaSlider = NULL;
}
void computeIntersection(const Primitive& facet);
void fill_aabb_tree() {
if(item->isEmpty()) return;
QGuiApplication::setOverrideCursor(Qt::WaitCursor);
CGAL::Real_timer timer;
timer.start();
tree.clear();
for (Tr::Finite_cells_iterator
cit = c3t3.triangulation().finite_cells_begin(),
end = c3t3.triangulation().finite_cells_end();
cit != end; ++cit)
{
Tr::Cell_handle ch = cit;
if(!c3t3.is_in_complex(ch)) continue;
tree.insert(Primitive(cit));
}
tree.build();
std::cerr << "C3t3 cells AABB tree built in " << timer.time()
<< " wall-clock seconds\n";
is_aabb_tree_built = true;
QGuiApplication::restoreOverrideCursor();
}
void reset_cut_plane();
void draw_triangle(const Tr::Bare_point& pa,
const Tr::Bare_point& pb,
const Tr::Bare_point& pc) const;
void draw_triangle_edges(const Tr::Bare_point& pa,
const Tr::Bare_point& pb,
const Tr::Bare_point& pc) const;
void draw_triangle_edges_cnc(const Tr::Bare_point& pa,
const Tr::Bare_point& pb,
const Tr::Bare_point& pc) const;
double complex_diag() const;
void compute_color_map(const QColor& c);
void initializeBuffers(CGAL::Three::Viewer_interface *viewer);
void initialize_intersection_buffers(CGAL::Three::Viewer_interface *viewer);
void computeSpheres();
void computeElements();
void computeIntersections(CGAL::Three::Viewer_interface* viewer);
void invalidate_stats()
{
min_edges_length = std::numeric_limits<float>::max();
max_edges_length = 0;
mean_edges_length = 0;
min_dihedral_angle = std::numeric_limits<float>::max();
max_dihedral_angle = 0;
mean_dihedral_angle = 0;
nb_subdomains = 0;
nb_spheres = 0;
nb_cnc = 0;
nb_vertices = 0;
nb_tets = 0;
smallest_radius_radius = std::numeric_limits<float>::max();
smallest_edge_radius = std::numeric_limits<float>::max();
biggest_v_sma_cube = 0;
computed_stats = false;
}
enum STATS {
MIN_EDGES_LENGTH = 0,
MAX_EDGES_LENGTH,
MEAN_EDGES_LENGTH,
MIN_DIHEDRAL_ANGLE,
MAX_DIHEDRAL_ANGLE,
MEAN_DIHEDRAL_ANGLE,
NB_SPHERES,
NB_CNC,
NB_VERTICES,
NB_TETS,
SMALLEST_RAD_RAD,
SMALLEST_EDGE_RAD,
BIGGEST_VL3_CUBE,
NB_SUBDOMAINS
};
Scene_c3t3_item* item;
C3t3 c3t3;
bool is_grid_shown;
CGAL::qglviewer::ManipulatedFrame* frame;
bool need_changed;
mutable std::map<CGAL::Three::Viewer_interface*, bool> are_intersection_buffers_filled;
bool areInterBufFilled(CGAL::Three::Viewer_interface* viewer)
{
if(are_intersection_buffers_filled.find(viewer) != are_intersection_buffers_filled.end())
return are_intersection_buffers_filled[viewer];
return false;
}
Scene_spheres_item *spheres;
Scene_intersection_item *intersection;
bool spheres_are_shown;
const Scene_item* data_item_;
QPixmap histogram_;
typedef std::set<int> Indices;
Indices surface_patch_indices_;
Indices subdomain_indices_;
QSlider* tet_Slider;
//!Allows OpenGL 2.0 context to get access to glDrawArraysInstanced.
typedef void (APIENTRYP PFNGLDRAWARRAYSINSTANCEDARBPROC) (GLenum mode, GLint first, GLsizei count, GLsizei primcount);
//!Allows OpenGL 2.0 context to get access to glVertexAttribDivisor.
typedef void (APIENTRYP PFNGLVERTEXATTRIBDIVISORARBPROC) (GLuint index, GLuint divisor);
//!Allows OpenGL 2.0 context to get access to gkFrameBufferTexture2D.
PFNGLDRAWARRAYSINSTANCEDARBPROC glDrawArraysInstanced;
//!Allows OpenGL 2.0 context to get access to glVertexAttribDivisor.
PFNGLVERTEXATTRIBDIVISORARBPROC glVertexAttribDivisor;
mutable std::size_t positions_poly_size;
mutable std::size_t positions_lines_size;
mutable std::size_t positions_lines_not_in_complex_size;
mutable std::vector<float> positions_lines;
mutable std::vector<float> positions_lines_not_in_complex;
mutable std::vector<float> positions_grid;
mutable std::vector<float> positions_poly;
mutable std::vector<float> positions_barycenter;
mutable std::vector<float> normals;
mutable std::vector<float> f_colors;
mutable std::vector<float> s_normals;
mutable std::vector<float> s_colors;
mutable std::vector<float> s_vertex;
mutable std::vector<float> ws_vertex;
mutable std::vector<float> s_radius;
mutable std::vector<float> s_center;
mutable bool computed_stats;
mutable float max_edges_length;
mutable float min_edges_length;
mutable float mean_edges_length;
mutable float min_dihedral_angle;
mutable float max_dihedral_angle;
mutable float mean_dihedral_angle;
mutable std::size_t nb_spheres;
mutable std::size_t nb_cnc;
mutable std::size_t nb_subdomains;
mutable std::size_t nb_vertices;
mutable std::size_t nb_tets;
mutable float smallest_radius_radius;
mutable float smallest_edge_radius;
mutable float biggest_v_sma_cube;
QSlider* alphaSlider;
Tree tree;
QVector<QColor> colors;
QVector<QColor> colors_subdomains;
bool show_tetrahedra;
bool is_aabb_tree_built;
bool cnc_are_shown;
bool is_valid;
bool is_surface;
bool last_intersection;
};
struct Set_show_tetrahedra {
Scene_c3t3_item_priv* priv;
Set_show_tetrahedra(Scene_c3t3_item_priv* priv) : priv(priv) {}
void operator()(bool b) {
priv->show_tetrahedra = b;
priv->item->show_intersection(b);
}
};
void Scene_c3t3_item::common_constructor(bool is_surface)
{
compute_bbox();
connect(d->frame, SIGNAL(modified()), this, SLOT(changed()));
c3t3_changed();
setRenderingMode(FlatPlusEdges);
create_flat_and_wire_sphere(1.0f,d->s_vertex,d->s_normals, d->ws_vertex);
d->is_surface = is_surface;
d->is_grid_shown = !is_surface;
d->show_tetrahedra = !is_surface;
d->last_intersection = !d->show_tetrahedra;
setTriangleContainer(C3t3_faces, new Tc(Vi::PROGRAM_C3T3, false));
setEdgeContainer(CNC, new Ec(Vi::PROGRAM_NO_SELECTION, false));
setEdgeContainer(Grid_edges, new Ec(Vi::PROGRAM_NO_SELECTION, false));
setEdgeContainer(C3t3_edges, new Ec(Vi::PROGRAM_C3T3_EDGES, false));
setPointContainer(C3t3_points, new Pc(Vi::PROGRAM_C3T3_EDGES, false));
BOOST_FOREACH(auto v, CGAL::QGLViewer::QGLViewerPool())
{
v->installEventFilter(this);
}
}
Scene_c3t3_item::Scene_c3t3_item(bool is_surface)
: Scene_group_item("unnamed")
, d(new Scene_c3t3_item_priv(this))
{
common_constructor(is_surface);
}
Scene_c3t3_item::Scene_c3t3_item(const C3t3& c3t3, bool is_surface)
: Scene_group_item("unnamed")
, d(new Scene_c3t3_item_priv(c3t3, this))
{
d->reset_cut_plane();
common_constructor(is_surface);
}
Scene_c3t3_item::~Scene_c3t3_item()
{
if(d)
{
delete d;
d = NULL;
}
}
const Scene_item*
Scene_c3t3_item::data_item() const
{
return d->data_item_;
}
void
Scene_c3t3_item::set_data_item(const Scene_item* data_item)
{
d->data_item_ = data_item;
if (NULL != data_item)
{
connect(d->data_item_, SIGNAL(aboutToBeDestroyed()),
this, SLOT(data_item_destroyed()));
}
}
void
Scene_c3t3_item::data_item_destroyed()
{
set_data_item(NULL);
}
const C3t3&
Scene_c3t3_item::c3t3() const {
return d->c3t3;
}
C3t3&
Scene_c3t3_item::c3t3()
{
return d->c3t3;
}
void
Scene_c3t3_item::changed()
{
if(!d)
return;
d->need_changed = true;
QTimer::singleShot(0,this, SLOT(updateCutPlane()));
}
void Scene_c3t3_item::updateCutPlane()
{ // just handle deformation - paint like selection is handled in eventFilter()
if(!d)
return;
if(d->need_changed) {
BOOST_FOREACH(auto v, CGAL::QGLViewer::QGLViewerPool())
{
CGAL::Three::Viewer_interface* viewer = static_cast<CGAL::Three::Viewer_interface*>(v);
d->are_intersection_buffers_filled[viewer] = false;
}
d->need_changed = false;
}
}
void
Scene_c3t3_item::c3t3_changed()
{
// Update colors
// Fill indices map and get max subdomain value
d->surface_patch_indices_.clear();
d->subdomain_indices_.clear();
int max = 0;
for (C3t3::Cells_in_complex_iterator cit = this->c3t3().cells_in_complex_begin(),
end = this->c3t3().cells_in_complex_end(); cit != end; ++cit)
{
max = (std::max)(max, cit->subdomain_index());
d->subdomain_indices_.insert(cit->subdomain_index());
}
const int max_subdomain_index = max;
for (C3t3::Facets_in_complex_iterator fit = this->c3t3().facets_in_complex_begin(),
end = this->c3t3().facets_in_complex_end(); fit != end; ++fit)
{
max = (std::max)(max, fit->first->surface_patch_index(fit->second));
d->surface_patch_indices_.insert(fit->first->surface_patch_index(fit->second));
}
d->colors.resize(max + 1);
d->colors_subdomains.resize(max_subdomain_index + 1);
d->compute_color_map(color_);
// Rebuild histogram
build_histogram();
d->tree.clear();
d->is_aabb_tree_built = false;
}
QPixmap
Scene_c3t3_item::graphicalToolTip() const
{
if (!d->histogram_.isNull())
{
return d->histogram_;
}
const_cast<Scene_c3t3_item&>(*this).build_histogram();
return d->histogram_;
}
std::vector<int>
create_histogram(const C3t3& c3t3, double& min_value, double& max_value)
{
Geom_traits::Compute_approximate_dihedral_angle_3 approx_dihedral_angle
= c3t3.triangulation().geom_traits().compute_approximate_dihedral_angle_3_object();
Geom_traits::Construct_point_3 wp2p
= c3t3.triangulation().geom_traits().construct_point_3_object();
std::vector<int> histo(181, 0);
min_value = 180.;
max_value = 0.;
for (C3t3::Cells_in_complex_iterator cit = c3t3.cells_in_complex_begin();
cit != c3t3.cells_in_complex_end();
++cit)
{
if (!c3t3.is_in_complex(cit))
continue;
#ifdef CGAL_MESH_3_DEMO_DONT_COUNT_TETS_ADJACENT_TO_SHARP_FEATURES_FOR_HISTOGRAM
if (c3t3.in_dimension(cit->vertex(0)) <= 1
|| c3t3.in_dimension(cit->vertex(1)) <= 1
|| c3t3.in_dimension(cit->vertex(2)) <= 1
|| c3t3.in_dimension(cit->vertex(3)) <= 1)
continue;
#endif //CGAL_MESH_3_DEMO_DONT_COUNT_TETS_ADJACENT_TO_SHARP_FEATURES_FOR_HISTOGRAM
const Tr::Bare_point& p0 = wp2p(cit->vertex(0)->point());
const Tr::Bare_point& p1 = wp2p(cit->vertex(1)->point());
const Tr::Bare_point& p2 = wp2p(cit->vertex(2)->point());
const Tr::Bare_point& p3 = wp2p(cit->vertex(3)->point());
double a = CGAL::to_double(CGAL::abs(approx_dihedral_angle(p0, p1, p2, p3)));
histo[static_cast<int>(std::floor(a))] += 1;
min_value = (std::min)(min_value, a);
max_value = (std::max)(max_value, a);
a = CGAL::to_double(CGAL::abs(approx_dihedral_angle(p0, p2, p1, p3)));
histo[static_cast<int>(std::floor(a))] += 1;
min_value = (std::min)(min_value, a);
max_value = (std::max)(max_value, a);
a = CGAL::to_double(CGAL::abs(approx_dihedral_angle(p0, p3, p1, p2)));
histo[static_cast<int>(std::floor(a))] += 1;
min_value = (std::min)(min_value, a);
max_value = (std::max)(max_value, a);
a = CGAL::to_double(CGAL::abs(approx_dihedral_angle(p1, p2, p0, p3)));
histo[static_cast<int>(std::floor(a))] += 1;
min_value = (std::min)(min_value, a);
max_value = (std::max)(max_value, a);
a = CGAL::to_double(CGAL::abs(approx_dihedral_angle(p1, p3, p0, p2)));
histo[static_cast<int>(std::floor(a))] += 1;
min_value = (std::min)(min_value, a);
max_value = (std::max)(max_value, a);
a = CGAL::to_double(CGAL::abs(approx_dihedral_angle(p2, p3, p0, p1)));
histo[static_cast<int>(std::floor(a))] += 1;
min_value = (std::min)(min_value, a);
max_value = (std::max)(max_value, a);
}
return histo;
}
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;
d->histogram_ = QPixmap(width, height + text_height);
d->histogram_.fill(QColor(192, 192, 192));
#endif
QPainter painter(&d->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 * ((double(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));
}
QColor
Scene_c3t3_item::get_histogram_color(const double v) const
{
if (v < 5) { return Qt::red; }
else if (v < 10) { return QColor(215, 108, 0); }
else if (v < 15) { return QColor(138, 139, 0); }
else if (v < 165) { return QColor(60, 136, 64); }
else if (v < 170) { return QColor(138, 139, 1); }
else if (v < 175) { return QColor(215, 108, 0); }
else /* 175<v<=180 */ { return Qt::red; }
}
void
Scene_c3t3_item::update_histogram()
{
build_histogram();
}
void
Scene_c3t3_item_priv::compute_color_map(const QColor& c)
{
typedef Indices::size_type size_type;
const size_type nb_domains = subdomain_indices_.size();
double i = 0;
for (Indices::iterator it = subdomain_indices_.begin(),
end = subdomain_indices_.end(); it != end; ++it, i += 1.)
{
double hue = c.hueF() + 1. / double(nb_domains) * i;
if (hue > 1) { hue -= 1.; }
colors_subdomains[*it] = QColor::fromHsvF(hue, c.saturationF(), c.valueF());
}
const size_type nb_patch_indices = surface_patch_indices_.size();
i = 0;
for (Indices::iterator it = surface_patch_indices_.begin(),
end = surface_patch_indices_.end(); it != end; ++it, i += 1.)
{
double hue = c.hueF() + 1. / double(nb_patch_indices) * i;
if (hue > 1) { hue -= 1.; }
colors[*it] = QColor::fromHsvF(hue, c.saturationF(), c.valueF());
}
}
Geom_traits::Plane_3 Scene_c3t3_item::plane(CGAL::qglviewer::Vec offset) const
{
const CGAL::qglviewer::Vec& pos = d->frame->position() - offset;
const CGAL::qglviewer::Vec& n =
d->frame->inverseTransformOf(CGAL::qglviewer::Vec(0.f, 0.f, 1.f));
return Geom_traits::Plane_3(n[0], n[1], n[2], -n * pos);
}
void Scene_c3t3_item::compute_bbox() const {
if (isEmpty())
_bbox = Bbox();
else {
bool bbox_init = false;
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;
if (bbox_init)
result = result + vit->point().bbox();
else
{
result = vit->point().bbox();
bbox_init = true;
}
}
_bbox = Bbox(result.xmin(), result.ymin(), result.zmin(),
result.xmax(), result.ymax(), result.zmax());
}
}
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>%4")
.arg(c3t3().triangulation().number_of_vertices())
.arg(c3t3().number_of_facets_in_complex())
.arg(c3t3().number_of_cells_in_complex())
.arg(property("toolTip").toString());
}
void Scene_c3t3_item::draw(CGAL::Three::Viewer_interface* viewer) const {
if(!visible())
return;
Scene_c3t3_item* ncthis = const_cast<Scene_c3t3_item*>(this);
if(!isInit(viewer))
initGL(viewer);
//viewer->makeCurrent();
if ( getBuffersFilled() &&
! getBuffersInit(viewer))
{
initializeBuffers(viewer);
setBuffersInit(viewer, true);
}
if(!getBuffersFilled())
{
computeElements();
initializeBuffers(viewer);
}
if(renderingMode() == Flat ||
renderingMode() == FlatPlusEdges)
{
QVector4D cp(this->plane().a(),this->plane().b(),this->plane().c(),this->plane().d());
getTriangleContainer(C3t3_faces)->setPlane(cp);
float shrink_factor = getShrinkFactor();
getTriangleContainer(C3t3_faces)->setShrinkFactor(shrink_factor);
// positions_poly_size is the number of total facets in the C3T3
// it is only computed once and positions_poly is emptied at the end
getTriangleContainer(C3t3_faces)->setAlpha(alpha());
getTriangleContainer(C3t3_faces)->setIsSurface(d->is_surface);
getTriangleContainer(C3t3_faces)->draw(viewer, false);
if(d->show_tetrahedra){
ncthis->show_intersection(true);
if(!d->frame->isManipulated())
d->intersection->setFast(false);
else
d->intersection->setFast(true);
if(!d->frame->isManipulated() && !d->areInterBufFilled(viewer))
{
//initGL
ncthis->d->computeIntersections(viewer);
d->are_intersection_buffers_filled[viewer] = true;
ncthis->show_intersection(true);
}
}
if(d->spheres_are_shown)
{
d->spheres->setPlane(this->plane());
}
}
if(d->is_grid_shown)
{
//viewer->makeCurrent(); //messes with the depthPeeling
getEdgeContainer(Grid_edges)->setColor(QColor(Qt::black));
QMatrix4x4 f_mat;
for (int i = 0; i<16; i++)
f_mat.data()[i] = d->frame->matrix()[i];
getEdgeContainer(Grid_edges)->setFrameMatrix(f_mat);
getEdgeContainer(Grid_edges)->draw(viewer, true);
}
}
void Scene_c3t3_item::drawEdges(CGAL::Three::Viewer_interface* viewer) const {
if(!visible())
return;
if(renderingMode() == Wireframe ||
renderingMode() == FlatPlusEdges )
{
if(renderingMode() == FlatPlusEdges)
{
GLint renderMode;
viewer->glGetIntegerv(GL_RENDER_MODE, &renderMode);
if(renderMode == GL_SELECT) return;
}
Scene_c3t3_item* ncthis = const_cast<Scene_c3t3_item*>(this);
if(!isInit(viewer))
initGL(viewer);
if ( getBuffersFilled() &&
! getBuffersInit(viewer))
{
initializeBuffers(viewer);
setBuffersInit(viewer, true);
}
if(!getBuffersFilled())
{
computeElements();
initializeBuffers(viewer);
}
if(renderingMode() == Wireframe && d->is_grid_shown)
{
getEdgeContainer(Grid_edges)->setColor(QColor(Qt::black));
QMatrix4x4 f_mat;
for (int i = 0; i<16; i++)
f_mat.data()[i] = d->frame->matrix()[i];
getEdgeContainer(Grid_edges)->setFrameMatrix(f_mat);
getEdgeContainer(Grid_edges)->draw(viewer, true);
}
QVector4D cp(this->plane().a(),this->plane().b(),this->plane().c(),this->plane().d());
getEdgeContainer(C3t3_edges)->setPlane(cp);
getEdgeContainer(C3t3_edges)->setIsSurface(d->is_surface);
getEdgeContainer(C3t3_edges)->setColor(QColor(Qt::black));
getEdgeContainer(C3t3_edges)->draw(viewer, true);
if(d->show_tetrahedra){
if(!d->frame->isManipulated())
d->intersection->setFast(false);
else
d->intersection->setFast(true);
if(!d->frame->isManipulated() && !d->areInterBufFilled(viewer))
{
ncthis->d->computeIntersections(viewer);
d->are_intersection_buffers_filled[viewer]=true;
}
}
if(d->spheres_are_shown)
{
d->spheres->setPlane(this->plane());
}
}
if(d->cnc_are_shown)
{
getEdgeContainer(CNC)->setColor(QColor(Qt::black));
getEdgeContainer(CNC)->draw(viewer, true);
}
}
void Scene_c3t3_item::drawPoints(CGAL::Three::Viewer_interface * viewer) const
{
if(!visible())
return;
if(renderingMode() == Points)
{
if(!isInit(viewer))
initGL(viewer);
if ( getBuffersFilled() &&
! getBuffersInit(viewer))
{
initializeBuffers(viewer);
setBuffersInit(viewer, true);
}
if(!getBuffersFilled())
{
computeElements();
initializeBuffers(viewer);
}
QVector4D cp(this->plane().a(),this->plane().b(),this->plane().c(),this->plane().d());
getPointContainer(C3t3_points)->setPlane(cp);
getPointContainer(C3t3_points)->setIsSurface(d->is_surface);
getPointContainer(C3t3_points)->setColor(this->color());
getPointContainer(C3t3_points)->draw(viewer, true);
if(d->is_grid_shown)
{
getEdgeContainer(Grid_edges)->setColor(QColor(Qt::black));
QMatrix4x4 f_mat;
for (int i = 0; i<16; i++)
f_mat.data()[i] = d->frame->matrix()[i];
getEdgeContainer(Grid_edges)->setFrameMatrix(f_mat);
getEdgeContainer(Grid_edges)->draw(viewer, true);
}
if(d->spheres_are_shown)
{
d->spheres->setPlane(this->plane());
}
}
}
void Scene_c3t3_item_priv::draw_triangle(const Tr::Bare_point& pa,
const Tr::Bare_point& pb,
const Tr::Bare_point& pc) const
{
#undef darker
Geom_traits::Vector_3 n = cross_product(pb - pa, pc - pa);
n = n / CGAL::sqrt(n*n);
const CGAL::qglviewer::Vec offset = Three::mainViewer()->offset();
for (int i = 0; i<3; i++)
{
normals.push_back(n.x());
normals.push_back(n.y());
normals.push_back(n.z());
}
positions_poly.push_back(pa.x()+offset.x);
positions_poly.push_back(pa.y()+offset.y);
positions_poly.push_back(pa.z()+offset.z);
positions_poly.push_back(pb.x()+offset.x);
positions_poly.push_back(pb.y()+offset.y);
positions_poly.push_back(pb.z()+offset.z);
positions_poly.push_back(pc.x()+offset.x);
positions_poly.push_back(pc.y()+offset.y);
positions_poly.push_back(pc.z()+offset.z);
for(int i=0; i<3; ++i)
{
positions_barycenter.push_back((pa[0]+pb[0]+pc[0])/3.0 + offset.x);
positions_barycenter.push_back((pa[1]+pb[1]+pc[1])/3.0 + offset.y);
positions_barycenter.push_back((pa[2]+pb[2]+pc[2])/3.0 + offset.z);
}
}
void Scene_c3t3_item_priv::draw_triangle_edges(const Tr::Bare_point& pa,
const Tr::Bare_point& pb,
const Tr::Bare_point& pc) const
{
#undef darker
const CGAL::qglviewer::Vec offset = Three::mainViewer()->offset();
positions_lines.push_back(pa.x()+offset.x);
positions_lines.push_back(pa.y()+offset.y);
positions_lines.push_back(pa.z()+offset.z);
positions_lines.push_back(pb.x()+offset.x);
positions_lines.push_back(pb.y()+offset.y);
positions_lines.push_back(pb.z()+offset.z);
positions_lines.push_back(pb.x()+offset.x);
positions_lines.push_back(pb.y()+offset.y);
positions_lines.push_back(pb.z()+offset.z);
positions_lines.push_back(pc.x()+offset.x);
positions_lines.push_back(pc.y()+offset.y);
positions_lines.push_back(pc.z()+offset.z);
positions_lines.push_back(pc.x()+offset.x);
positions_lines.push_back(pc.y()+offset.y);
positions_lines.push_back(pc.z()+offset.z);
positions_lines.push_back(pa.x()+offset.x);
positions_lines.push_back(pa.y()+offset.y);
positions_lines.push_back(pa.z()+offset.z);
}
void Scene_c3t3_item_priv::draw_triangle_edges_cnc(const Tr::Bare_point& pa,
const Tr::Bare_point& pb,
const Tr::Bare_point& pc) const
{
#undef darker
const CGAL::qglviewer::Vec offset = Three::mainViewer()->offset();
positions_lines_not_in_complex.push_back(pa.x()+offset.x);
positions_lines_not_in_complex.push_back(pa.y()+offset.y);
positions_lines_not_in_complex.push_back(pa.z()+offset.z);
positions_lines_not_in_complex.push_back(pb.x()+offset.x);
positions_lines_not_in_complex.push_back(pb.y()+offset.y);
positions_lines_not_in_complex.push_back(pb.z()+offset.z);
positions_lines_not_in_complex.push_back(pb.x()+offset.x);
positions_lines_not_in_complex.push_back(pb.y()+offset.y);
positions_lines_not_in_complex.push_back(pb.z()+offset.z);
positions_lines_not_in_complex.push_back(pc.x()+offset.x);
positions_lines_not_in_complex.push_back(pc.y()+offset.y);
positions_lines_not_in_complex.push_back(pc.z()+offset.z);
positions_lines_not_in_complex.push_back(pc.x()+offset.x);
positions_lines_not_in_complex.push_back(pc.y()+offset.y);
positions_lines_not_in_complex.push_back(pc.z()+offset.z);
positions_lines_not_in_complex.push_back(pa.x()+offset.x);
positions_lines_not_in_complex.push_back(pa.y()+offset.y);
positions_lines_not_in_complex.push_back(pa.z()+offset.z);
}
double Scene_c3t3_item_priv::complex_diag() const {
const CGAL::Three::Scene_item::Bbox& bbox = item->bbox();
const double& xdelta = bbox.xmax() - bbox.xmin();
const double& ydelta = bbox.ymax() - bbox.ymin();
const double& zdelta = bbox.zmax() - bbox.zmin();
const double diag = std::sqrt(xdelta*xdelta +
ydelta*ydelta +
zdelta*zdelta);
return diag * 0.7;
}
void Scene_c3t3_item::export_facets_in_complex()
{
SMesh outmesh;
CGAL::facets_in_complex_3_to_triangle_mesh(c3t3(), outmesh);
Scene_surface_mesh_item* item = new Scene_surface_mesh_item(std::move(outmesh));
item->setName(QString("%1_%2").arg(this->name()).arg("facets"));
scene->addItem(item);
this->setVisible(false);
}
QMenu* Scene_c3t3_item::contextMenu()
{
const char* prop_name = "Menu modified by Scene_c3t3_item.";
QMenu* menu = Scene_item::contextMenu();
// Use dynamic properties:
// https://doc.qt.io/qt-5/qobject.html#property
bool menuChanged = menu->property(prop_name).toBool();
if (!menuChanged) {
QMenu *container = new QMenu(tr("Alpha value"));
container->menuAction()->setProperty("is_groupable", true);
QWidgetAction *sliderAction = new QWidgetAction(0);
sliderAction->setDefaultWidget(alphaSlider());
connect(d->alphaSlider, &QSlider::valueChanged,
[this]()
{
if(d->intersection)
d->intersection->setAlpha(d->alphaSlider->value());
redraw();
}
);
container->addAction(sliderAction);
menu->addMenu(container);
container = new QMenu(tr("Tetrahedra's Shrink Factor"));
sliderAction = new QWidgetAction(0);
connect(d->tet_Slider, &QSlider::valueChanged, this, &Scene_c3t3_item::itemChanged);
sliderAction->setDefaultWidget(d->tet_Slider);
container->addAction(sliderAction);
menu->addMenu(container);
QAction* actionExportFacetsInComplex =
menu->addAction(tr("Export facets in complex"));
actionExportFacetsInComplex->setObjectName("actionExportFacetsInComplex");
connect(actionExportFacetsInComplex,
SIGNAL(triggered()), this,
SLOT(export_facets_in_complex()));
if(is_valid())
{
QAction* actionShowSpheres =
menu->addAction(tr("Show protecting &spheres"));
actionShowSpheres->setCheckable(true);
actionShowSpheres->setObjectName("actionShowSpheres");
connect(actionShowSpheres, SIGNAL(toggled(bool)),
this, SLOT(show_spheres(bool)));
QAction* actionShowCNC =
menu->addAction(tr("Show cells not in complex"));
actionShowCNC->setCheckable(true);
actionShowCNC->setObjectName("actionShowCNC");
connect(actionShowCNC, SIGNAL(toggled(bool)),
this, SLOT(show_cnc(bool)));
}
QAction* actionShowTets =
menu->addAction(tr("Show &tetrahedra"));
actionShowTets->setCheckable(true);
actionShowTets->setObjectName("actionShowTets");
connect(actionShowTets, &QAction::toggled, Set_show_tetrahedra(this->d));
QAction* actionShowGrid=
menu->addAction(tr("Show &grid"));
actionShowGrid->setCheckable(true);
actionShowGrid->setChecked(true);
actionShowGrid->setObjectName("actionShowGrid");
connect(actionShowGrid, SIGNAL(toggled(bool)),
this, SLOT(show_grid(bool)));
menu->setProperty(prop_name, true);
}
return menu;
}
void Scene_c3t3_item_priv::initializeBuffers(CGAL::Three::Viewer_interface *viewer)
{
//vao containing the data for the facets
{
item->getTriangleContainer(Scene_c3t3_item::C3t3_faces)->initializeBuffers(viewer);
item->getTriangleContainer(Scene_c3t3_item::C3t3_faces)->setFlatDataSize(
positions_poly_size);
positions_poly.clear();
positions_poly.shrink_to_fit();
normals.clear();
normals.shrink_to_fit();
f_colors.clear();
f_colors.shrink_to_fit();
positions_barycenter.clear();
positions_barycenter.shrink_to_fit();
}
//vao containing the data for the lines
{
item->getEdgeContainer(Scene_c3t3_item::C3t3_edges)->initializeBuffers(viewer);
item->getEdgeContainer(Scene_c3t3_item::C3t3_edges)->setFlatDataSize(
positions_lines_size);
}
//vao containing the data for the points
{
item->getPointContainer(Scene_c3t3_item::C3t3_points)->initializeBuffers(viewer);
item->getPointContainer(Scene_c3t3_item::C3t3_points)->setFlatDataSize(
positions_lines_size);
positions_lines.clear();
positions_lines.shrink_to_fit();
}
// vao containing the data for the cnc
{
item->getEdgeContainer(Scene_c3t3_item::CNC)->initializeBuffers(viewer);
item->getEdgeContainer(Scene_c3t3_item::CNC)->setFlatDataSize(
positions_lines_not_in_complex_size);
positions_lines_not_in_complex.clear();
positions_lines_not_in_complex.shrink_to_fit();
}
//vao containing the data for the grid
{
item->getEdgeContainer(Scene_c3t3_item::Grid_edges)->initializeBuffers(viewer);
item->getEdgeContainer(Scene_c3t3_item::Grid_edges)->setFlatDataSize(
positions_grid.size());
}
}
void Scene_c3t3_item_priv::computeIntersection(const Primitive& cell)
{
Geom_traits::Construct_point_3 wp2p
= c3t3.triangulation().geom_traits().construct_point_3_object();
typedef unsigned char UC;
Tr::Cell_handle ch = cell.id();
QColor c = this->colors_subdomains[ch->subdomain_index()].lighter(50);
const Tr::Bare_point& pa = wp2p(ch->vertex(0)->point());
const Tr::Bare_point& pb = wp2p(ch->vertex(1)->point());
const Tr::Bare_point& pc = wp2p(ch->vertex(2)->point());
const Tr::Bare_point& pd = wp2p(ch->vertex(3)->point());
CGAL::Color color(UC(c.red()), UC(c.green()), UC(c.blue()));
intersection->addTriangle(pb, pa, pc, color);
intersection->addTriangle(pa, pb, pd, color);
intersection->addTriangle(pa, pd, pc, color);
intersection->addTriangle(pb, pc, pd, color);
}
struct ComputeIntersection {
Scene_c3t3_item_priv& item_priv;
ComputeIntersection(Scene_c3t3_item_priv& item_priv)
: item_priv(item_priv)
{}
void operator()(const Primitive& facet) const
{
item_priv.computeIntersection(facet);
}
};
void Scene_c3t3_item_priv::computeIntersections(CGAL::Three::Viewer_interface* viewer)
{
const CGAL::qglviewer::Vec offset = Three::mainViewer()->offset();
if(!is_aabb_tree_built) fill_aabb_tree();
positions_poly.clear();
normals.clear();
f_colors.clear();
positions_lines.clear();
positions_barycenter.clear();
const Geom_traits::Plane_3& plane = item->plane(offset);
tree.all_intersected_primitives(plane,
boost::make_function_output_iterator(ComputeIntersection(*this)));
intersection->gl_initialization(viewer);
}
void Scene_c3t3_item_priv::computeSpheres()
{
Geom_traits::Construct_point_3 wp2p
= c3t3.triangulation().geom_traits().construct_point_3_object();
if(!spheres)
return;
for(Tr::Finite_vertices_iterator
vit = c3t3.triangulation().finite_vertices_begin(),
end = c3t3.triangulation().finite_vertices_end();
vit != end; ++vit)
{
if(vit->point().weight()==0) continue;
typedef Tr::Vertex_handle Vertex_handle;
std::vector<Vertex_handle> incident_vertices;
c3t3.triangulation().incident_vertices(vit, std::back_inserter(incident_vertices));
bool red = vit->is_special();
for(std::vector<Vertex_handle>::const_iterator
vvit = incident_vertices.begin(), end = incident_vertices.end();
vvit != end; ++vvit)
{
if(c3t3.triangulation().is_infinite(*vvit)) continue;
if(Geom_traits::Sphere_3(wp2p(vit->point()),
vit->point().weight()).bounded_side(wp2p((*vvit)->point()))
== CGAL::ON_BOUNDED_SIDE)
red = true;
}
QColor c;
if(red)
c = QColor(Qt::red);
else
c = spheres->color();
switch(vit->in_dimension())
{
case 0:
c = QColor::fromHsv((c.hue()+120)%360, c.saturation(),c.lightness(), c.alpha());
break;
case 1:
break;
default:
c.setRgb(50,50,50,255);
}
const CGAL::qglviewer::Vec offset = Three::mainViewer()->offset();
Tr::Bare_point center(wp2p(vit->point()).x() + offset.x,
wp2p(vit->point()).y() + offset.y,
wp2p(vit->point()).z() + offset.z);
float radius = vit->point().weight() ;
typedef unsigned char UC;
spheres->add_sphere(Geom_traits::Sphere_3(center, radius),
CGAL::Color(UC(c.red()), UC(c.green()), UC(c.blue())));
}
spheres->invalidateOpenGLBuffers();
}
void Scene_c3t3_item_priv::computeElements()
{
if(!alphaSlider)
{
alphaSlider = new QSlider(::Qt::Horizontal);
alphaSlider->setMinimum(0);
alphaSlider->setMaximum(255);
alphaSlider->setValue(255);
}
positions_poly.clear();
normals.clear();
f_colors.clear();
positions_lines.clear();
positions_lines_not_in_complex.clear();
s_colors.resize(0);
s_center.resize(0);
s_radius.resize(0);
//The grid
{
float x = (2 * (float)complex_diag()) / 10.0;
float y = (2 * (float)complex_diag()) / 10.0;
for (float u = 0; u < 11; u += 1.f)
{
positions_grid.push_back(-(float)complex_diag() + x* u);
positions_grid.push_back(-(float)complex_diag());
positions_grid.push_back(0.0);
positions_grid.push_back(-(float)complex_diag() + x* u);
positions_grid.push_back((float)complex_diag());
positions_grid.push_back(0.0);
}
for (float v = 0; v<11; v += 1.f)
{
positions_grid.push_back(-(float)complex_diag());
positions_grid.push_back(-(float)complex_diag() + v * y);
positions_grid.push_back(0.0);
positions_grid.push_back((float)complex_diag());
positions_grid.push_back(-(float)complex_diag() + v * y);
positions_grid.push_back(0.0);
}
}
//The facets
{
Geom_traits::Construct_point_3 wp2p
= c3t3.triangulation().geom_traits().construct_point_3_object();
for (C3t3::Facet_iterator
fit = c3t3.facets_begin(),
end = c3t3.facets_end();
fit != end; ++fit)
{
const Tr::Cell_handle& cell = fit->first;
const int& index = fit->second;
const Tr::Bare_point& pa = wp2p(cell->vertex((index + 1) & 3)->point());
const Tr::Bare_point& pb = wp2p(cell->vertex((index + 2) & 3)->point());
const Tr::Bare_point& pc = wp2p(cell->vertex((index + 3) & 3)->point());
QColor color = colors[cell->surface_patch_index(index)];
f_colors.push_back(color.redF());f_colors.push_back(color.greenF());f_colors.push_back(color.blueF());
f_colors.push_back(color.redF());f_colors.push_back(color.greenF());f_colors.push_back(color.blueF());
f_colors.push_back(color.redF());f_colors.push_back(color.greenF());f_colors.push_back(color.blueF());
if ((index % 2 == 1) == c3t3.is_in_complex(cell))
draw_triangle(pb, pa, pc);
else draw_triangle(pa, pb, pc);
draw_triangle_edges(pa, pb, pc);
}
//the cells not in the complex
for(C3t3::Triangulation::Cell_iterator
cit = c3t3.triangulation().finite_cells_begin(),
end = c3t3.triangulation().finite_cells_end();
cit != end; ++cit)
{
if(!c3t3.is_in_complex(cit))
{
bool has_far_point = false;
for(int i=0; i<4; i++)
if(c3t3.in_dimension(cit->vertex(i)) == -1)
{
has_far_point = true;
break;
}
if(!has_far_point)
{
const Tr::Bare_point& p1 = wp2p(cit->vertex(0)->point());
const Tr::Bare_point& p2 = wp2p(cit->vertex(1)->point());
const Tr::Bare_point& p3 = wp2p(cit->vertex(2)->point());
const Tr::Bare_point& p4 = wp2p(cit->vertex(3)->point());
draw_triangle_edges_cnc(p1, p2, p4);
draw_triangle_edges_cnc(p1, p3, p4);
draw_triangle_edges_cnc(p2, p3, p4);
draw_triangle_edges_cnc(p1, p2, p3);
}
}
}
}
}
bool Scene_c3t3_item::load_binary(std::istream& is)
{
if(!CGAL::Mesh_3::load_binary_file(is, c3t3())) return false;
if(is && d->frame == 0) {
d->frame = new CGAL::qglviewer::ManipulatedFrame();
}
d->reset_cut_plane();
if(is.good()) {
c3t3_changed();
changed();
return true;
}
else
return false;
}
void
Scene_c3t3_item_priv::reset_cut_plane() {
const CGAL::Three::Scene_item::Bbox& bbox = item->bbox();
const float xcenter = static_cast<float>((bbox.xmax()+bbox.xmin())/2.);
const float ycenter = static_cast<float>((bbox.ymax()+bbox.ymin())/2.);
const float zcenter = static_cast<float>((bbox.zmax()+bbox.zmin())/2.);
const CGAL::qglviewer::Vec offset = Three::mainViewer()->offset();
CGAL::qglviewer::Vec center(xcenter+offset.x, ycenter+offset.y, zcenter+offset.z);
frame->setPosition(center);
}
void
Scene_c3t3_item::setColor(QColor c)
{
color_ = c;
d->compute_color_map(c);
invalidateOpenGLBuffers();
d->invalidate_stats();
BOOST_FOREACH(auto v, CGAL::QGLViewer::QGLViewerPool())
{
CGAL::Three::Viewer_interface* viewer = static_cast<CGAL::Three::Viewer_interface*>(v);
d->are_intersection_buffers_filled[viewer] = false;
}
}
void Scene_c3t3_item::show_grid(bool b)
{
d->is_grid_shown = b;
contextMenu()->findChild<QAction*>("actionShowGrid")->setChecked(b);
itemChanged();
}
void Scene_c3t3_item::show_spheres(bool b)
{
if(is_valid())
{
d->spheres_are_shown = b;
contextMenu()->findChild<QAction*>("actionShowSpheres")->setChecked(b);
if(b && !d->spheres)
{
d->spheres = new Scene_spheres_item(this, true);
d->spheres->setName("Protecting spheres");
d->spheres->setRenderingMode(Gouraud);
connect(d->spheres, SIGNAL(destroyed()), this, SLOT(reset_spheres()));
connect(d->spheres, SIGNAL(on_color_changed()), this, SLOT(on_spheres_color_changed()));
d->computeSpheres();
lockChild(d->spheres);
scene->addItem(d->spheres);
scene->changeGroup(d->spheres, this);
}
else if (!b && d->spheres!=NULL)
{
unlockChild(d->spheres);
scene->erase(scene->item_id(d->spheres));
}
Q_EMIT redraw();
}
}
void Scene_c3t3_item::show_intersection(bool b)
{
contextMenu()->findChild<QAction*>("actionShowTets")->setChecked(b);
if(b && !d->intersection)
{
d->intersection = new Scene_intersection_item(this);
d->intersection->init_vectors(&d->positions_poly,
&d->normals,
&d->positions_lines,
&d->f_colors,
&d->positions_barycenter);
d->intersection->setName("Intersection tetrahedra");
d->intersection->setRenderingMode(renderingMode());
connect(d->intersection, SIGNAL(destroyed()), this, SLOT(reset_intersection_item()));
BOOST_FOREACH(auto v, CGAL::QGLViewer::QGLViewerPool())
{
CGAL::Three::Viewer_interface* viewer = static_cast<CGAL::Three::Viewer_interface*>(v);
d->are_intersection_buffers_filled[viewer] = false;
if(!d->areInterBufFilled(viewer))
{
//initGL
Scene_c3t3_item* ncthis = const_cast<Scene_c3t3_item*>(this);
ncthis->d->computeIntersections(viewer);
d->are_intersection_buffers_filled[viewer] = true;
}
}
scene->addItem(d->intersection);
scene->changeGroup(d->intersection, this);
lockChild(d->intersection);
}
else if (!b && d->intersection!=NULL)
{
unlockChild(d->intersection);
scene->erase(scene->item_id(d->intersection));
}
if(d->last_intersection != b)
{
d->last_intersection = b;
Q_EMIT redraw();
}
}
void Scene_c3t3_item::show_cnc(bool b)
{
if(is_valid())
{
d->cnc_are_shown = b;
contextMenu()->findChild<QAction*>("actionShowCNC")->setChecked(b);
Q_EMIT redraw();
}
}
void Scene_c3t3_item::reset_intersection_item()
{
d->intersection = NULL;
}
void Scene_c3t3_item::reset_spheres()
{
d->spheres = NULL;
}
CGAL::Three::Scene_item::ManipulatedFrame* Scene_c3t3_item::manipulatedFrame() {
if(d)
return d->frame;
else
return NULL;
}
void Scene_c3t3_item::setPosition(float x, float y, float z) {
const CGAL::qglviewer::Vec offset = Three::mainViewer()->offset();
d->frame->setPosition(x+offset.x, y+offset.y, z+offset.z);
}
bool Scene_c3t3_item::has_spheres()const { return d->spheres_are_shown;}
bool Scene_c3t3_item::has_grid()const { return d->is_grid_shown;}
bool Scene_c3t3_item::has_cnc()const { return d->cnc_are_shown;}
bool Scene_c3t3_item::has_tets()const { return d->intersection; }
void Scene_c3t3_item::setNormal(float x, float y, float z) {
d->frame->setOrientation(x, y, z, 0.f);
}
void Scene_c3t3_item::copyProperties(Scene_item *item)
{
Scene_c3t3_item* c3t3_item = qobject_cast<Scene_c3t3_item*>(item);
if(!c3t3_item)
return;
const CGAL::qglviewer::Vec offset = Three::mainViewer()->offset();
d->frame->setPositionAndOrientation(c3t3_item->manipulatedFrame()->position() - offset,
c3t3_item->manipulatedFrame()->orientation());
show_intersection(c3t3_item->has_tets());
show_spheres(c3t3_item->has_spheres());
show_cnc(c3t3_item->has_cnc());
show_grid(c3t3_item->has_grid());
int value = c3t3_item->alphaSlider()->value();
alphaSlider()->setValue(value);
}
bool Scene_c3t3_item::is_valid() const
{
return d->is_valid;
}
void Scene_c3t3_item::set_valid(bool b)
{
d->is_valid = b;
}
float Scene_c3t3_item::getShrinkFactor() const
{
return float(d->tet_Slider->value())/100.0f;
}
bool Scene_c3t3_item::eventFilter(QObject *, QEvent *event)
{
if(event->type() == QEvent::MouseButtonRelease)
{
redraw();
}
return false;
}
bool Scene_c3t3_item::keyPressEvent(QKeyEvent *event)
{
if(event->key() == Qt::Key_Plus)
{
d->tet_Slider->setValue(d->tet_Slider->value() + 5);
itemChanged();
}
else if(event->key() == Qt::Key_Minus)
{
d->tet_Slider->setValue(d->tet_Slider->value() -5);
itemChanged();
}
return false;
}
QString Scene_c3t3_item::computeStats(int type)
{
Geom_traits::Construct_point_3 wp2p
= d->c3t3.triangulation().geom_traits().construct_point_3_object();
if(!d->computed_stats)
{
float nb_edges = 0;
float total_edges = 0;
float nb_angle = 0;
float total_angle = 0;
for (C3t3::Facet_iterator
fit = d->c3t3.facets_begin(),
end = d->c3t3.facets_end();
fit != end; ++fit)
{
const Tr::Cell_handle& cell = fit->first;
const int& index = fit->second;
const Tr::Bare_point& pa = wp2p(cell->vertex((index + 1) & 3)->point());
const Tr::Bare_point& pb = wp2p(cell->vertex((index + 2) & 3)->point());
const Tr::Bare_point& pc = wp2p(cell->vertex((index + 3) & 3)->point());
float edges[3];
edges[0]=(std::sqrt(CGAL::squared_distance(pa, pb)));
edges[1]=(std::sqrt(CGAL::squared_distance(pa, pc)));
edges[2]=(std::sqrt(CGAL::squared_distance(pb, pc)));
for(int i=0; i<3; ++i)
{
if(edges[i] < d->min_edges_length){ d->min_edges_length = edges[i]; }
if(edges[i] > d->max_edges_length){ d->max_edges_length = edges[i]; }
total_edges+=edges[i];
++nb_edges;
}
}
d->mean_edges_length = total_edges/(float)nb_edges;
for(Tr::Finite_vertices_iterator
vit = d->c3t3.triangulation().finite_vertices_begin(),
end = d->c3t3.triangulation().finite_vertices_end();
vit != end; ++vit)
{
if(vit->point().weight()==0) continue;
++d->nb_spheres;
}
for(C3t3::Triangulation::Cell_iterator
cit = d->c3t3.triangulation().finite_cells_begin(),
end = d->c3t3.triangulation().finite_cells_end();
cit != end; ++cit)
{
if(!d->c3t3.is_in_complex(cit))
{
bool has_far_point = false;
for(int i=0; i<4; i++)
if(d->c3t3.in_dimension(cit->vertex(i)) == -1)
{
has_far_point = true;
break;
}
if(!has_far_point)
++d->nb_cnc;
}
}
Geom_traits::Compute_approximate_dihedral_angle_3 approx_dihedral_angle
= d->c3t3.triangulation().geom_traits().compute_approximate_dihedral_angle_3_object();
QVector<int> sub_ids;
for (C3t3::Cells_in_complex_iterator cit = d->c3t3.cells_in_complex_begin();
cit != d->c3t3.cells_in_complex_end();
++cit)
{
if (!d->c3t3.is_in_complex(cit))
continue;
if(!sub_ids.contains(cit->subdomain_index()))
{
sub_ids.push_back(cit->subdomain_index());
}
const Tr::Bare_point& p0 = wp2p(cit->vertex(0)->point());
const Tr::Bare_point& p1 = wp2p(cit->vertex(1)->point());
const Tr::Bare_point& p2 = wp2p(cit->vertex(2)->point());
const Tr::Bare_point& p3 = wp2p(cit->vertex(3)->point());
float v = std::abs(CGAL::volume(p0, p1, p2, p3));
float circumradius = std::sqrt(CGAL::squared_radius(p0, p1, p2, p3));
//find smallest edge
float edges[6];
edges[0] = std::sqrt(CGAL::squared_distance(p0, p1));
edges[1] = std::sqrt(CGAL::squared_distance(p0, p2));
edges[2] = std::sqrt(CGAL::squared_distance(p0, p3));
edges[3] = std::sqrt(CGAL::squared_distance(p2, p1));
edges[4] = std::sqrt(CGAL::squared_distance(p2, p3));
edges[5] = std::sqrt(CGAL::squared_distance(p1, p3));
float min_edge = edges[0];
for(int i=1; i<6; ++i)
{
if(edges[i]<min_edge)
min_edge=edges[i];
}
float sumar = std::sqrt(CGAL::squared_area(p0,p1,p2))+std::sqrt(CGAL::squared_area(p1,p2,p3))+
std::sqrt(CGAL::squared_area(p2,p3,p0)) + std::sqrt(CGAL::squared_area(p3,p1,p0));
float inradius = 3*v/sumar;
float smallest_edge_radius = min_edge/circumradius*std::sqrt(6)/4.0;//*sqrt(6)/4 so that the perfect tet ratio is 1
float smallest_radius_radius = inradius/circumradius*3; //*3 so that the perfect tet ratio is 1 instead of 1/3
float biggest_v_sma_cube = v/std::pow(min_edge,3)*6*std::sqrt(2);//*6*sqrt(2) so that the perfect tet ratio is 1 instead
if(smallest_edge_radius < d->smallest_edge_radius)
d->smallest_edge_radius = smallest_edge_radius;
if(smallest_radius_radius < d->smallest_radius_radius)
d->smallest_radius_radius = smallest_radius_radius;
if(biggest_v_sma_cube > d->biggest_v_sma_cube)
d->biggest_v_sma_cube = biggest_v_sma_cube;
double a = CGAL::to_double(CGAL::abs(approx_dihedral_angle(p0, p1, p2, p3)));
if(a < d->min_dihedral_angle) { d->min_dihedral_angle = a; }
if(a > d->max_dihedral_angle) { d->max_dihedral_angle = a; }
total_angle+=a;
++nb_angle;
a = CGAL::to_double(CGAL::abs(approx_dihedral_angle(p0, p2, p1, p3)));
if(a < d->min_dihedral_angle) { d->min_dihedral_angle = a; }
if(a > d->max_dihedral_angle) { d->max_dihedral_angle = a; }
total_angle+=a;
++nb_angle;
a = CGAL::to_double(CGAL::abs(approx_dihedral_angle(p0, p3, p1, p2)));
if(a < d->min_dihedral_angle) { d->min_dihedral_angle = a; }
if(a > d->max_dihedral_angle) { d->max_dihedral_angle = a; }
total_angle+=a;
++nb_angle;
a = CGAL::to_double(CGAL::abs(approx_dihedral_angle(p1, p2, p0, p3)));
if(a < d->min_dihedral_angle) { d->min_dihedral_angle = a; }
if(a > d->max_dihedral_angle) { d->max_dihedral_angle = a; }
total_angle+=a;
++nb_angle;
a = CGAL::to_double(CGAL::abs(approx_dihedral_angle(p1, p3, p0, p2)));
if(a < d->min_dihedral_angle) { d->min_dihedral_angle = a; }
if(a > d->max_dihedral_angle) { d->max_dihedral_angle = a; }
total_angle+=a;
++nb_angle;
a = CGAL::to_double(CGAL::abs(approx_dihedral_angle(p2, p3, p0, p1)));
if(a < d->min_dihedral_angle) { d->min_dihedral_angle = a; }
if(a > d->max_dihedral_angle) { d->max_dihedral_angle = a; }
total_angle+=a;
++nb_angle;
}
d->mean_dihedral_angle = total_angle/(float)nb_angle;
d->nb_subdomains = sub_ids.size();
d->nb_vertices = d->c3t3.number_of_vertices_in_complex();
d->nb_tets = d->c3t3.number_of_cells();
d->computed_stats = true;
}
switch (type)
{
case Scene_c3t3_item_priv::MIN_EDGES_LENGTH:
return QString::number(d->min_edges_length);
case Scene_c3t3_item_priv::MAX_EDGES_LENGTH:
return QString::number(d->max_edges_length);
case Scene_c3t3_item_priv::MEAN_EDGES_LENGTH:
return QString::number(d->mean_edges_length);
case Scene_c3t3_item_priv::MIN_DIHEDRAL_ANGLE:
return QString::number(d->min_dihedral_angle);
case Scene_c3t3_item_priv::MAX_DIHEDRAL_ANGLE:
return QString::number(d->max_dihedral_angle);
case Scene_c3t3_item_priv::MEAN_DIHEDRAL_ANGLE:
return QString::number(d->mean_dihedral_angle);
case Scene_c3t3_item_priv::NB_SPHERES:
return QString::number(d->nb_spheres);
case Scene_c3t3_item_priv::NB_CNC:
return QString::number(d->nb_cnc);
case Scene_c3t3_item_priv::NB_VERTICES:
return QString::number(d->nb_vertices);
case Scene_c3t3_item_priv::NB_TETS:
return QString::number(d->nb_tets);
case Scene_c3t3_item_priv::SMALLEST_RAD_RAD:
return QString::number(d->smallest_radius_radius);
case Scene_c3t3_item_priv::SMALLEST_EDGE_RAD:
return QString::number(d->smallest_edge_radius);
case Scene_c3t3_item_priv::BIGGEST_VL3_CUBE:
return QString::number(d->biggest_v_sma_cube);
case Scene_c3t3_item_priv::NB_SUBDOMAINS:
return QString::number(d->nb_subdomains);
default:
return QString();
}
}
CGAL::Three::Scene_item::Header_data Scene_c3t3_item::header() const
{
CGAL::Three::Scene_item::Header_data data;
//categories
data.categories.append(std::pair<QString,int>(QString("Properties"),14));
//titles
data.titles.append(QString("Min Edges Length"));
data.titles.append(QString("Max Edges Length"));
data.titles.append(QString("Mean Edges Length"));
data.titles.append(QString("Min Dihedral Angle"));
data.titles.append(QString("Max Dihedral Angle"));
data.titles.append(QString("Mean Dihedral Angle"));
data.titles.append(QString("#Protecting Spheres"));
data.titles.append(QString("#Cells not in Complex"));
data.titles.append(QString("#Vertices in Complex"));
data.titles.append(QString("#Cells"));
data.titles.append(QString("Smallest Radius-Radius Ratio"));
data.titles.append(QString("Smallest Edge-Radius Ratio"));
data.titles.append(QString("Biggest Vl^3"));
data.titles.append(QString("#Subdomains"));
return data;
}
void Scene_c3t3_item::invalidateOpenGLBuffers()
{
setBuffersFilled(false);
getTriangleContainer(C3t3_faces)->reset_vbos(ALL);
getEdgeContainer(C3t3_edges)->reset_vbos(ALL);
getEdgeContainer(CNC)->reset_vbos(ALL);
getEdgeContainer(Grid_edges)->reset_vbos(ALL);
getPointContainer(C3t3_points)->reset_vbos(ALL);
Q_FOREACH(CGAL::QGLViewer* v, CGAL::QGLViewer::QGLViewerPool())
{
CGAL::Three::Viewer_interface* viewer = static_cast<CGAL::Three::Viewer_interface*>(v);
if(viewer == NULL)
continue;
setBuffersInit(viewer, false);
}
resetCutPlane();
compute_bbox();
d->invalidate_stats();
}
void Scene_c3t3_item::resetCutPlane()
{
if(!d)
return;
d->reset_cut_plane();
}
void Scene_c3t3_item::itemAboutToBeDestroyed(Scene_item *item)
{
Scene_item::itemAboutToBeDestroyed(item);
if(d && item == this)
{
d->c3t3.clear();
d->tree.clear();
if(d->frame)
{
Three::mainViewer()->setManipulatedFrame(0);
delete d->frame;
d->frame = NULL;
delete d->tet_Slider;
}
delete d;
d=0;
}
}
void Scene_c3t3_item::on_spheres_color_changed()
{
if(!d->spheres)
return;
d->spheres->clear_spheres();
d->computeSpheres();
}
float Scene_c3t3_item::alpha() const
{
if(!d->alphaSlider)
return 1.0f;
return (float)d->alphaSlider->value() / 255.0f;
}
void Scene_c3t3_item::setAlpha(int alpha)
{
if(!d->alphaSlider)
d->computeElements();
d->alphaSlider->setValue(alpha);
if(d->intersection)
d->intersection->setAlpha(alpha);
redraw();
}
QSlider* Scene_c3t3_item::alphaSlider() {
if(!d->alphaSlider)
d->computeElements();
return d->alphaSlider;
}
void Scene_c3t3_item::initializeBuffers(Viewer_interface *v) const
{
const_cast<Scene_c3t3_item*>(this)->d->initializeBuffers(v);
}
void Scene_c3t3_item::computeElements()const
{
QApplication::setOverrideCursor(Qt::WaitCursor);
const_cast<Scene_c3t3_item*>(this)->d->computeElements();
getTriangleContainer(C3t3_faces)->allocate(
Tc::Flat_vertices, d->positions_poly.data(),
static_cast<int>(d->positions_poly.size()*sizeof(float)));
getTriangleContainer(C3t3_faces)->allocate(
Tc::Flat_normals,
d->normals.data(),
static_cast<int>(d->normals.size()*sizeof(float)));
getTriangleContainer(C3t3_faces)->allocate(
Tc::FColors,
d->f_colors.data(),
static_cast<int>(d->f_colors.size()*sizeof(float)));
getTriangleContainer(C3t3_faces)->allocate(
Tc::Facet_centers,
d->positions_barycenter.data(),
static_cast<int>(d->positions_barycenter.size()*sizeof(float)));
d->positions_poly_size = d->positions_poly.size();
getEdgeContainer(C3t3_edges)->allocate(
Ec::Vertices,
d->positions_lines.data(),
static_cast<int>(d->positions_lines.size()*sizeof(float)));
d->positions_lines_size = d->positions_lines.size();
getEdgeContainer(CNC)->allocate(
Ec::Vertices,
d->positions_lines_not_in_complex.data(),
static_cast<int>(d->positions_lines_not_in_complex.size()*sizeof(float)));
d->positions_lines_not_in_complex_size = d->positions_lines_not_in_complex.size();
getEdgeContainer(Grid_edges)->allocate(
Ec::Vertices,
d->positions_grid.data(),
static_cast<int>(d->positions_grid.size()*sizeof(float)));
getPointContainer(C3t3_points)->allocate(
Pc::Vertices,
d->positions_lines.data(),
static_cast<int>(d->positions_lines.size()*sizeof(float)));
setBuffersFilled(true);
QApplication::restoreOverrideCursor();
}
void Scene_c3t3_item::newViewer(Viewer_interface *viewer)
{
viewer->installEventFilter(this);
Scene_item_rendering_helper::newViewer(viewer);
if(d->intersection)
{
d->intersection->newViewer(viewer);
d->computeIntersections(viewer);
}
}
#include "Scene_c3t3_item.moc"
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