void Viewer::drawAllFaces(bool flat)
{
LCC &lcc = *scene->lcc;
for (LCC::Attribute_range<3>::type::iterator
it=lcc.attributes<3>().begin(),
itend=lcc.attributes<3>().end(); it!=itend; ++it )
{
if ( it->info().is_visible() )
{
for(LCC::One_dart_per_incident_cell_range<2,3>::iterator
dartIter=lcc.one_dart_per_incident_cell<2,3>
(lcc.dart_of_attribute<3>(it)).begin(); dartIter.cont(); ++dartIter)
{
// We draw the polygon
::glBegin(GL_POLYGON);
// double r = (double)dartIter->attribute<3>()->info().r()/255.0;
double r = (double)lcc.info<3>(dartIter).color().r()/255.0;
double g = (double)lcc.info<3>(dartIter).color().g()/255.0;
double b = (double)lcc.info<3>(dartIter).color().b()/255.0;
if ( !lcc.is_free(dartIter, 3) )
{
r += (double)lcc.info<3>(lcc.beta(dartIter,3)).color().r()/255.0;
g += (double)lcc.info<3>(lcc.beta(dartIter,3)).color().g()/255.0;
b += (double)lcc.info<3>(lcc.beta(dartIter,3)).color().b()/255.0;
r /= 2; g /= 2; b /= 2;
}
::glColor3f(r,g,b);
if(flat)
{
LCC::Vector normal = CGAL::compute_normal_of_cell_2(lcc,dartIter);
normal = normal/(CGAL::sqrt(normal*normal));
::glNormal3d(normal.x(), normal.y(), normal.z());
}
for (LCC::Dart_of_orbit_range<1>::const_iterator
orbitIter = lcc.darts_of_orbit<1>(dartIter).begin();
orbitIter.cont(); ++orbitIter)
{
if(!flat)
{
// If Gouraud shading: 1 normal per vertex
LCC::Vector normal = CGAL::compute_normal_of_cell_0(lcc,orbitIter);
normal = normal/(CGAL::sqrt(normal*normal));
::glNormal3d(normal.x(), normal.y(), normal.z());
}
const LCC::Point& p = lcc.point(orbitIter);
::glVertex3d(p.x(),p.y(),p.z());
}
::glEnd();
}
}
}
}
void Viewer::drawFacet(Dart_const_handle ADart)
{
LCC &m = *scene->lcc;
::glBegin(GL_POLYGON);
CGAL_assertion( ADart->attribute<3>()!=NULL );
// double r = (double)ADart->attribute<3>()->info().r()/255.0;
double r = (double)ADart->attribute<3>()->info().color().r()/255.0;
double g = (double)ADart->attribute<3>()->info().color().g()/255.0;
double b = (double)ADart->attribute<3>()->info().color().b()/255.0;
if ( !ADart->is_free(3) )
{
r += (double)ADart->beta(3)->attribute<3>()->info().color().r()/255.0;
g += (double)ADart->beta(3)->attribute<3>()->info().color().g()/255.0;
b += (double)ADart->beta(3)->attribute<3>()->info().color().b()/255.0;
r /= 2;
g /= 2;
b /= 2;
}
::glColor3f(r,g,b);
// If Flat shading: 1 normal per polygon
if (flatShading)
{
LCC::Vector n = CGAL::compute_normal_of_cell_2(m,ADart);
n = n/(CGAL::sqrt(n*n));
::glNormal3d(n.x(),n.y(),n.z());
}
for ( LCC::Dart_of_orbit_range<1>::const_iterator it(m,ADart);
it.cont(); ++it)
{
// If Gouraud shading: 1 normal per vertex
if (!flatShading)
{
LCC::Vector n = CGAL::compute_normal_of_cell_0<LCC>(m,it);
n = n/(CGAL::sqrt(n*n));
::glNormal3d(n.x(),n.y(),n.z());
}
LCC::Point p = m.point(it);
::glVertex3d( p.x(),p.y(),p.z());
}
::glEnd();
}
void Viewer::triangulate_facet()
{
pos_facets.resize(0);
flat_normals.resize(0);
smooth_normals.resize(0);
colors.resize(0);
LCC &lcc = *scene->lcc;
for (LCC::Attribute_range<3>::type::iterator
it=lcc.attributes<3>().begin(),
itend=lcc.attributes<3>().end(); it!=itend; ++it )
{
if ( it->info().is_visible() )
{
for(LCC::One_dart_per_incident_cell_range<2,3>::iterator
dartIter=lcc.one_dart_per_incident_cell<2,3>
(lcc.dart_of_attribute<3>(it)).begin(); dartIter.cont(); ++dartIter)
{
//Computes the normal of the facet
Traits::Vector_3 normal = CGAL::compute_normal_of_cell_2(lcc,dartIter);
normal = normal/(CGAL::sqrt(normal*normal));
P_traits cdt_traits(normal);
CDT cdt(cdt_traits);
LCC::Dart_of_orbit_range<1>::const_iterator
he_circ = lcc.darts_of_orbit<1>(dartIter).begin(),
he_circ_end = lcc.darts_of_orbit<1>(dartIter).end();
// Iterates on the vector of facet handles
CDT::Vertex_handle previous, first;
do {
CDT::Vertex_handle vh = cdt.insert(lcc.point(he_circ));
if(first == 0) {
first = vh;
}
//vh->info() = he_circ;
if(previous != 0 && previous != vh) {
cdt.insert_constraint(previous, vh);
}
previous = vh;
} while( ++he_circ != he_circ_end );
cdt.insert_constraint(previous, first);
// sets mark is_external
for(CDT::All_faces_iterator
fit = cdt.all_faces_begin(),
end = cdt.all_faces_end();
fit != end; ++fit)
{
fit->info().is_external = false;
}
//check if the facet is external or internal
std::queue<CDT::Face_handle> face_queue;
face_queue.push(cdt.infinite_vertex()->face());
while(! face_queue.empty() ) {
CDT::Face_handle fh = face_queue.front();
face_queue.pop();
if(fh->info().is_external) continue;
fh->info().is_external = true;
for(int i = 0; i <3; ++i) {
if(!cdt.is_constrained(std::make_pair(fh, i)))
{
face_queue.push(fh->neighbor(i));
}
}
}
//iterates on the internal faces to add the vertices to the positions
//and the normals to the appropriate vectors
for(CDT::Finite_faces_iterator
ffit = cdt.finite_faces_begin(),
end = cdt.finite_faces_end();
ffit != end; ++ffit)
{
if(ffit->info().is_external)
continue;
//compute normals (no smooth for non-triangle facets objects
LCC::Vector normal = CGAL::compute_normal_of_cell_2(lcc,dartIter);
normal = normal/(CGAL::sqrt(normal*normal));
smooth_normals.push_back(normal.x());smooth_normals.push_back(normal.y());smooth_normals.push_back(normal.z());
smooth_normals.push_back(normal.x());smooth_normals.push_back(normal.y());smooth_normals.push_back(normal.z());
smooth_normals.push_back(normal.x());smooth_normals.push_back(normal.y());smooth_normals.push_back(normal.z());
flat_normals.push_back(normal.x());flat_normals.push_back(normal.y());flat_normals.push_back(normal.z());
flat_normals.push_back(normal.x());flat_normals.push_back(normal.y());flat_normals.push_back(normal.z());
flat_normals.push_back(normal.x());flat_normals.push_back(normal.y());flat_normals.push_back(normal.z());
pos_facets.push_back(ffit->vertex(0)->point().x()); pos_facets.push_back(ffit->vertex(0)->point().y()); pos_facets.push_back(ffit->vertex(0)->point().z());
pos_facets.push_back(ffit->vertex(1)->point().x()); pos_facets.push_back(ffit->vertex(1)->point().y()); pos_facets.push_back(ffit->vertex(1)->point().z());
pos_facets.push_back(ffit->vertex(2)->point().x()); pos_facets.push_back(ffit->vertex(2)->point().y()); pos_facets.push_back(ffit->vertex(2)->point().z());
double r = (double)lcc.info<3>(dartIter).color().r()/255.0;
double g = (double)lcc.info<3>(dartIter).color().g()/255.0;
double b = (double)lcc.info<3>(dartIter).color().b()/255.0;
if ( !lcc.is_free(dartIter, 3) )
{
r += (double)lcc.info<3>(lcc.beta(dartIter,3)).color().r()/255.0;
g += (double)lcc.info<3>(lcc.beta(dartIter,3)).color().g()/255.0;
b += (double)lcc.info<3>(lcc.beta(dartIter,3)).color().b()/255.0;
r /= 2; g /= 2; b /= 2;
}
colors.push_back(r);colors.push_back(g);colors.push_back(b);
colors.push_back(r);colors.push_back(g);colors.push_back(b);
colors.push_back(r);colors.push_back(g);colors.push_back(b);
}
}
}
}
}
void Viewer::compute_elements()
{
//Facets
if(is_Triangulated())
{
pos_facets.resize(0);
flat_normals.resize(0);
smooth_normals.resize(0);
colors.resize(0);
LCC &lcc = *scene->lcc;
for (LCC::Attribute_range<3>::type::iterator
it=lcc.attributes<3>().begin(),
itend=lcc.attributes<3>().end(); it!=itend; ++it )
{
if ( it->info().is_visible() )
{
for(LCC::One_dart_per_incident_cell_range<2,3>::iterator
dartIter=lcc.one_dart_per_incident_cell<2,3>
(lcc.dart_of_attribute<3>(it)).begin(); dartIter.cont(); ++dartIter)
{
// We draw the polygon
// double r = (double)dartIter->attribute<3>()->info().r()/255.0;
float r = (float)lcc.info<3>(dartIter).color().r()/255.0;
float g = (float)lcc.info<3>(dartIter).color().g()/255.0;
float b = (float)lcc.info<3>(dartIter).color().b()/255.0;
if ( !lcc.is_free(dartIter, 3) )
{
r += (float)lcc.info<3>(lcc.beta(dartIter,3)).color().r()/255.0;
g += (float)lcc.info<3>(lcc.beta(dartIter,3)).color().g()/255.0;
b += (float)lcc.info<3>(lcc.beta(dartIter,3)).color().b()/255.0;
r /= 2; g /= 2; b /= 2;
}
colors.push_back(r);colors.push_back(g);colors.push_back(b);
colors.push_back(r);colors.push_back(g);colors.push_back(b);
colors.push_back(r);colors.push_back(g);colors.push_back(b);
//compute flat normals
LCC::Vector normal = CGAL::compute_normal_of_cell_2(lcc,dartIter);
normal = normal/(CGAL::sqrt(normal*normal));
flat_normals.push_back(normal.x());flat_normals.push_back(normal.y());flat_normals.push_back(normal.z());
flat_normals.push_back(normal.x());flat_normals.push_back(normal.y());flat_normals.push_back(normal.z());
flat_normals.push_back(normal.x());flat_normals.push_back(normal.y());flat_normals.push_back(normal.z());
for (LCC::Dart_of_orbit_range<1>::const_iterator
orbitIter = lcc.darts_of_orbit<1>(dartIter).begin();
orbitIter.cont(); ++orbitIter)
{
//compute Smooth normals
LCC::Vector normal = CGAL::compute_normal_of_cell_0(lcc,orbitIter);
normal = normal/(CGAL::sqrt(normal*normal));
smooth_normals.push_back(normal.x());smooth_normals.push_back(normal.y());smooth_normals.push_back(normal.z());
const LCC::Point& p = lcc.point(orbitIter);
pos_facets.push_back(p.x()); pos_facets.push_back(p.y()); pos_facets.push_back(p.z());
}
}
}
}
}
else
triangulate_facet();
//Edges
{
pos_lines.resize(0);
LCC &lcc = *scene->lcc;
if ( !lcc.is_empty() )
{
for (LCC::Attribute_range<3>::type::iterator
it=lcc.attributes<3>().begin(),
itend=lcc.attributes<3>().end(); it!=itend; ++it )
{
if ( it->info().is_visible() )
{
for(LCC::One_dart_per_incident_cell_range<1,3>::iterator
dartIter=lcc.one_dart_per_incident_cell<1,3>
(lcc.dart_of_attribute<3>(it)).begin(); dartIter.cont(); ++dartIter)
{
const LCC::Point& p = lcc.point(dartIter);
Dart_handle d2 = lcc.other_extremity(dartIter);
if ( d2!=NULL )
{
const LCC::Point& p2 = lcc.point(d2);
pos_lines.push_back(p.x()); pos_lines.push_back(p.y()); pos_lines.push_back(p.z());
pos_lines.push_back(p2.x()); pos_lines.push_back(p2.y()); pos_lines.push_back(p2.z());
}
}
}
}
}
}
//Points
{
pos_points.resize(0);
LCC &lcc = *scene->lcc;
if ( lcc.is_empty() )
{
bb = LCC::Point(CGAL::ORIGIN).bbox();
bb = bb + LCC::Point(1,1,1).bbox(); // To avoid a warning from Qglviewer
return;
}
bool empty = true;
for (LCC::Attribute_range<3>::type::iterator
it=lcc.attributes<3>().begin(),
itend=lcc.attributes<3>().end(); it!=itend; ++it )
{
if ( it->info().is_visible() )
{
for(LCC::One_dart_per_incident_cell_range<0,3>::iterator
dartIter=lcc.one_dart_per_incident_cell<0,3>
(lcc.dart_of_attribute<3>(it)).begin();
dartIter.cont(); ++dartIter)
{
const LCC::Point& p = lcc.point(dartIter);
pos_points.push_back(p.x()); pos_points.push_back(p.y()); pos_points.push_back(p.z());
if ( empty )
{
bb = p.bbox();
empty = false;
}
else
bb = bb + p.bbox();
}
}
}
if ( lcc.is_empty() )
{
bb = LCC::Point(CGAL::ORIGIN).bbox();
bb = bb + LCC::Point(1,1,1).bbox(); // To avoid a warning from Qglviewer
}
}
}
void Viewer::compute_face(Dart_handle dh, LCC::size_type markface)
{
LCC &lcc = *scene->lcc;
CGAL::mark_cell<LCC, 2>(lcc, dh, markface);
double r = (double)lcc.info<3>(dh).color().r()/255.0;
double g = (double)lcc.info<3>(dh).color().g()/255.0;
double b = (double)lcc.info<3>(dh).color().b()/255.0;
if ( !lcc.is_free(dh, 3) )
{
r += (double)lcc.info<3>(lcc.beta(dh,3)).color().r()/255.0;
g += (double)lcc.info<3>(lcc.beta(dh,3)).color().g()/255.0;
b += (double)lcc.info<3>(lcc.beta(dh,3)).color().b()/255.0;
r /= 2; g /= 2; b /= 2;
}
//compute flat normals
LCC::Vector normal = CGAL::compute_normal_of_cell_2(lcc,dh);
normal = normal/(CGAL::sqrt(normal*normal));
if (lcc.beta<1,1,1>(dh)!=dh)
{
P_traits cdt_traits(normal);
CDT cdt(cdt_traits);
// Iterates on the vector of facet handles
CDT::Vertex_handle previous = NULL, first = NULL;
for (LCC::Dart_of_orbit_range<1>::const_iterator
he_circ = lcc.darts_of_orbit<1>(dh).begin(),
he_circ_end = lcc.darts_of_orbit<1>(dh).end();
he_circ!=he_circ_end; ++he_circ)
{
CDT::Vertex_handle vh = cdt.insert(lcc.point(he_circ));
if(first == NULL)
{ first = vh; }
vh->info().v = CGAL::compute_normal_of_cell_0<LCC>(lcc, he_circ);
if(previous!=NULL && previous != vh)
{ cdt.insert_constraint(previous, vh); }
previous = vh;
}
if (previous!=NULL)
cdt.insert_constraint(previous, first);
// sets mark is_external
for(CDT::All_faces_iterator fit = cdt.all_faces_begin(),
fitend = cdt.all_faces_end(); fit!=fitend; ++fit)
{
fit->info().is_external = true;
fit->info().is_process = false;
}
//check if the facet is external or internal
std::queue<CDT::Face_handle> face_queue;
CDT::Face_handle face_internal = NULL;
face_queue.push(cdt.infinite_vertex()->face());
while(! face_queue.empty() )
{
CDT::Face_handle fh = face_queue.front();
face_queue.pop();
if(!fh->info().is_process)
{
fh->info().is_process = true;
for(int i = 0; i <3; ++i)
{
if(!cdt.is_constrained(std::make_pair(fh, i)))
{
face_queue.push(fh->neighbor(i));
}
else if (face_internal==NULL)
{
face_internal = fh->neighbor(i);
}
}
}
}
if ( face_internal!=NULL )
face_queue.push(face_internal);
while(! face_queue.empty() )
{
CDT::Face_handle fh = face_queue.front();
face_queue.pop();
if(!fh->info().is_process)
{
fh->info().is_process = true;
fh->info().is_external = false;
for(int i = 0; i <3; ++i)
{
if(!cdt.is_constrained(std::make_pair(fh, i)))
{
face_queue.push(fh->neighbor(i));
}
}
}
}
//iterates on the internal faces to add the vertices to the positions
//and the normals to the appropriate vectors
for(CDT::Finite_faces_iterator ffit = cdt.finite_faces_begin(),
ffitend = cdt.finite_faces_end(); ffit != ffitend; ++ffit)
{
if(!ffit->info().is_external)
{
flat_normals.push_back(normal.x());
flat_normals.push_back(normal.y());
flat_normals.push_back(normal.z());
flat_normals.push_back(normal.x());
flat_normals.push_back(normal.y());
flat_normals.push_back(normal.z());
flat_normals.push_back(normal.x());
flat_normals.push_back(normal.y());
flat_normals.push_back(normal.z());
smooth_normals.push_back(ffit->vertex(0)->info().v.x());
smooth_normals.push_back(ffit->vertex(0)->info().v.y());
smooth_normals.push_back(ffit->vertex(0)->info().v.z());
smooth_normals.push_back(ffit->vertex(1)->info().v.x());
smooth_normals.push_back(ffit->vertex(1)->info().v.y());
smooth_normals.push_back(ffit->vertex(1)->info().v.z());
smooth_normals.push_back(ffit->vertex(2)->info().v.x());
smooth_normals.push_back(ffit->vertex(2)->info().v.y());
smooth_normals.push_back(ffit->vertex(2)->info().v.z());
pos_facets.push_back(ffit->vertex(0)->point().x());
pos_facets.push_back(ffit->vertex(0)->point().y());
pos_facets.push_back(ffit->vertex(0)->point().z());
pos_facets.push_back(ffit->vertex(1)->point().x());
pos_facets.push_back(ffit->vertex(1)->point().y());
pos_facets.push_back(ffit->vertex(1)->point().z());
pos_facets.push_back(ffit->vertex(2)->point().x());
pos_facets.push_back(ffit->vertex(2)->point().y());
pos_facets.push_back(ffit->vertex(2)->point().z());
colors.push_back(r);colors.push_back(g);colors.push_back(b);
colors.push_back(r);colors.push_back(g);colors.push_back(b);
colors.push_back(r);colors.push_back(g);colors.push_back(b);
}
}
}
else
{
colors.push_back(r);colors.push_back(g);colors.push_back(b);
colors.push_back(r);colors.push_back(g);colors.push_back(b);
colors.push_back(r);colors.push_back(g);colors.push_back(b);
flat_normals.push_back(normal.x());
flat_normals.push_back(normal.y());
flat_normals.push_back(normal.z());
flat_normals.push_back(normal.x());
flat_normals.push_back(normal.y());
flat_normals.push_back(normal.z());
flat_normals.push_back(normal.x());
flat_normals.push_back(normal.y());
flat_normals.push_back(normal.z());
for (LCC::Dart_of_orbit_range<1>::const_iterator
orbitIter = lcc.darts_of_orbit<1>(dh).begin();
orbitIter.cont(); ++orbitIter)
{
//compute Smooth normals
LCC::Vector normal = CGAL::compute_normal_of_cell_0(lcc,orbitIter);
normal = normal/(CGAL::sqrt(normal*normal));
smooth_normals.push_back(normal.x());
smooth_normals.push_back(normal.y());
smooth_normals.push_back(normal.z());
const LCC::Point& p = lcc.point(orbitIter);
pos_facets.push_back(p.x());
pos_facets.push_back(p.y());
pos_facets.push_back(p.z());
}
}
}
