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Merge pull request #3659 from maxGimeno/Demo-Fix_VTU_visu-GF 

Polyhedron Demo: Rework of VTK_io_plugin
This commit is contained in:
Laurent Rineau 2019-02-13 15:38:36 +01:00
parent 7f00deb05c 50eed65f41
commit f74d33af49
3 changed files with 196 additions and 22 deletions
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2
Polyhedron/demo/Polyhedron/Plugins/IO/CMakeLists.txt
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@ -35,7 +35,7 @@ if (VTK_FOUND)
if ("${VTK_VERSION_MAJOR}" GREATER "5")
if(VTK_LIBRARIES)
polyhedron_demo_plugin(vtk_plugin VTK_io_plugin KEYWORDS IO Mesh_3)
target_link_libraries(vtk_plugin PUBLIC scene_surface_mesh_item scene_polylines_item scene_c3t3_item
target_link_libraries(vtk_plugin PUBLIC scene_surface_mesh_item scene_polylines_item scene_c3t3_item scene_points_with_normal_item
vtkCommonCore vtkIOCore vtkIOLegacy vtkIOXML
vtkFiltersCore vtkFiltersSources)

204
Polyhedron/demo/Polyhedron/Plugins/IO/VTK_io_plugin.cpp
View File

@ -20,11 +20,12 @@
//
#include <CGAL/Mesh_3/io_signature.h>
#include "Scene_c3t3_item.h"
#include <QtCore/qglobal.h>
#include "Scene_surface_mesh_item.h"
#include "Scene_c3t3_item.h"
#include "Scene_polylines_item.h"
#include "Scene_points_with_normal_item.h"
#include <CGAL/Three/Polyhedron_demo_plugin_helper.h>
#include <CGAL/Three/Polyhedron_demo_io_plugin_interface.h>
@ -45,6 +46,7 @@
#include <CGAL/boost/graph/Euler_operations.h>
#include <CGAL/property_map.h>
#include <CGAL/IO/Complex_3_in_triangulation_3_to_vtk.h>
#include <CGAL/Mesh_3/tet_soup_to_c3t3.h>
#include <CGAL/IO/output_to_vtu.h>
#include <CGAL/boost/graph/io.h>
@ -161,6 +163,10 @@ namespace CGAL{
//extract cells
for (vtkIdType i = 0; i<nb_cells; ++i)
{
if(poly_data->GetCellType(i) != 5
&& poly_data->GetCellType(i) != 7
&& poly_data->GetCellType(i) != 9) //only supported cells are triangles, quads and polygons
continue;
vtkCell* cell_ptr = poly_data->GetCell(i);
vtkIdType nb_vertices = cell_ptr->GetNumberOfPoints();
@ -195,13 +201,17 @@ namespace CGAL{
//extract segments
for (vtkIdType i = 0; i<nb_cells; ++i)
{
if(poly_data->GetCellType(i) != 3
&& poly_data->GetCellType(i) != 4)
continue;
vtkCell* cell_ptr = poly_data->GetCell(i);
vtkIdType nb_vertices = cell_ptr->GetNumberOfPoints();
if (nb_vertices !=2) continue;
segments.push_back( std::vector<Point_3>() );
segments.back().push_back(point_map[cell_ptr->GetPointId(0)]);
segments.back().push_back(point_map[cell_ptr->GetPointId(1)]);
for(int j = 0; j < nb_vertices; ++j)
{
segments.back().push_back(point_map[cell_ptr->GetPointId(j)]);
}
}
}
@ -372,17 +382,16 @@ public:
std::string fname = fileinfo.absoluteFilePath().toStdString();
FaceGraph* poly = new FaceGraph();
// Try to read .vtk in a facegraph
if(fileinfo.size() == 0)
{
CGAL::Three::Three::warning( tr("The file you are trying to load is empty."));
Scene_facegraph_item* item =
new Scene_facegraph_item(poly);
new Scene_facegraph_item();
item->setName(fileinfo.completeBaseName());
return item;
}
vtkSmartPointer<vtkPointSet> data;
vtkSmartPointer<CGAL::ErrorObserverVtk> obs =
vtkSmartPointer<CGAL::ErrorObserverVtk>::New();
@ -446,24 +455,183 @@ public:
msgBox.exec();
}
if (CGAL::vtkPointSet_to_polygon_mesh(data, *poly))
//check celltypes
bool is_polygon_mesh(false),
is_c3t3(false),
is_polyline(false);
for(int i = 0; i< data->GetNumberOfCells(); ++i)
{
Scene_facegraph_item* poly_item = new Scene_facegraph_item(poly);
poly_item->setName(fileinfo.fileName());
return poly_item;
int t = data->GetCellType(i);
if( t == 5 || t == 7 || t == 9) //tri, quad or polygon
is_polygon_mesh = true;
else if(t == 10) //tetrahedron
is_c3t3 = true;
else if( t == 3 || t == 4) //line or polyline
is_polyline = true;
}
else{
// extract only segments
Scene_group_item* group = nullptr;
if((is_polygon_mesh && is_c3t3)
|| (is_polygon_mesh && is_polyline)
|| (is_c3t3 && is_polyline) )
{
group = new Scene_group_item(fileinfo.baseName());
group->setScene(CGAL::Three::Three::scene());
}
if(is_polygon_mesh)
{
FaceGraph* poly = new FaceGraph();
if (CGAL::vtkPointSet_to_polygon_mesh(data, *poly))
{
Scene_facegraph_item* poly_item = new Scene_facegraph_item(poly);
if(group)
{
poly_item->setName(QString("%1_faces").arg(fileinfo.baseName()));
CGAL::Three::Three::scene()->addItem(poly_item);
CGAL::Three::Three::scene()->changeGroup(poly_item, group);
}
else{
poly_item->setName(fileinfo.baseName());
return poly_item;
}
}
}
if (is_c3t3)
{
typedef boost::array<int, 3> Facet; // 3 = id
typedef boost::array<int, 5> Tet_with_ref; // first 4 = id, fifth = reference
Scene_c3t3_item* c3t3_item = new Scene_c3t3_item();
c3t3_item->set_valid(false);
//build a triangulation from data:
std::vector<Tr::Point> points;
vtkPoints* dataP = data->GetPoints();;
for(int i = 0; i< data->GetNumberOfPoints(); ++i)
{
double *p = dataP->GetPoint(i);
points.push_back(Tr::Point(p[0],p[1],p[2]));
}
std::vector<Tet_with_ref> finite_cells;
bool has_mesh_domain = data->GetCellData()->HasArray("MeshDomain");
vtkDataArray* domains = data->GetCellData()->GetArray("MeshDomain");
for(int i = 0; i< data->GetNumberOfCells(); ++i)
{
if(data->GetCellType(i) != 10 )
continue;
vtkIdList* pids = data->GetCell(i)->GetPointIds();
Tet_with_ref cell;
for(int j = 0; j<4; ++j)
cell[j] = pids->GetId(j);
cell[4] = has_mesh_domain ? static_cast<int>(domains->GetComponent(i,0))
:1;
finite_cells.push_back(cell);
}
std::map<Facet, int> border_facets;
//Preprocessing for build_triangulation
//check for orientation and swap in cells if not good.
for(std::size_t i=0; i<finite_cells.size(); ++i)
{
Point_3 test_points[4];
for (int j = 0; j < 4; ++j)
{
Tr::Point tp = points[finite_cells[i][j]];
test_points[j] = Point_3(tp.x(), tp.y(), tp.z());
}
if(CGAL::orientation(test_points[0], test_points[1], test_points[2], test_points[3])
!= CGAL::POSITIVE)
{
std::swap(finite_cells[i][1], finite_cells[i][3]);
}
}
CGAL::build_triangulation<Tr, true>(c3t3_item->c3t3().triangulation(), points, finite_cells, border_facets);
for( C3t3::Triangulation::Finite_cells_iterator
cit = c3t3_item->c3t3().triangulation().finite_cells_begin();
cit != c3t3_item->c3t3().triangulation().finite_cells_end();
++cit)
{
CGAL_assertion(cit->info() >= 0);
c3t3_item->c3t3().add_to_complex(cit, cit->info());
for(int i=0; i < 4; ++i)
{
if(cit->surface_patch_index(i)>0)
{
c3t3_item->c3t3().add_to_complex(cit, i, cit->surface_patch_index(i));
}
}
}
//if there is no facet in the complex, we add the border facets.
if(c3t3_item->c3t3().number_of_facets_in_complex() == 0)
{
for( C3t3::Triangulation::Finite_facets_iterator
fit = c3t3_item->c3t3().triangulation().finite_facets_begin();
fit != c3t3_item->c3t3().triangulation().finite_facets_end();
++fit)
{
typedef C3t3::Triangulation::Cell_handle Cell_handle;
Cell_handle c = fit->first;
Cell_handle nc = c->neighbor(fit->second);
// By definition, Subdomain_index() is supposed to be the id of the exterior
if(c->subdomain_index() != C3t3::Triangulation::Cell::Subdomain_index() &&
nc->subdomain_index() == C3t3::Triangulation::Cell::Subdomain_index())
{
// Color the border facet with the index of its cell
c3t3_item->c3t3().add_to_complex(c, fit->second, c->subdomain_index());
}
}
}
c3t3_item->c3t3_changed();
c3t3_item->resetCutPlane();
if(group)
{
c3t3_item->setName(QString("%1_tetrahedra").arg(fileinfo.baseName()));
CGAL::Three::Three::scene()->addItem(c3t3_item);
CGAL::Three::Three::scene()->changeGroup(c3t3_item, group);
}
else{
c3t3_item->setName(fileinfo.baseName());
return c3t3_item;
}
}
if(is_polyline)
{
std::vector< std::vector<Point> > segments;
extract_segments_from_vtkPointSet(data,segments);
if (segments.empty()) return NULL; /// TODO handle point sets
Scene_polylines_item* polyline_item = new Scene_polylines_item();
polyline_item->setName(fileinfo.fileName());
BOOST_FOREACH(const std::vector<Point>& segment, segments)
polyline_item->polylines.push_back(segment);
return polyline_item;
polyline_item->polylines.push_back(segment);
if(group)
{
polyline_item->setName(QString("%1_lines").arg(fileinfo.baseName()));
CGAL::Three::Three::scene()->addItem(polyline_item);
CGAL::Three::Three::scene()->changeGroup(polyline_item, group);
}
else{
polyline_item->setName(fileinfo.baseName());
return polyline_item;
}
}
return NULL;
if(group)
return group;
QApplication::restoreOverrideCursor();
QMessageBox::warning(CGAL::Three::Three::mainWindow(),
"Problematic file",
"Cell type not recognized. Only points will be displayed.");
QApplication::setOverrideCursor(Qt::WaitCursor);
Scene_points_with_normal_item* point_item = new Scene_points_with_normal_item();
for(int i=0; i< data->GetNumberOfPoints(); ++i)
{
double* p = data->GetPoint(i);
point_item->point_set()->insert(Point_3(p[0], p[1], p[2]));
}
point_item->setName(fileinfo.baseName());
return point_item;
}
}; // end Polyhedron_demo_vtk_plugin

12
Polyhedron/demo/Polyhedron/Scene.cpp
View File

@ -98,16 +98,15 @@ Scene::replaceItem(Scene::Item_id index, CGAL::Three::Scene_item* item, bool emi
this, SLOT(callDraw()));
CGAL::Three::Scene_group_item* group =
qobject_cast<CGAL::Three::Scene_group_item*>(m_entries[index]);
QList<Scene_item*> group_children;
if(group)
{
QList<int> group_children;
Q_FOREACH(Item_id id, group->getChildren())
{
CGAL::Three::Scene_item* child = group->getChild(id);
group->unlockChild(child);
group_children << item_id(child);
group_children << child;
}
erase(group_children);
}
CGAL::Three::Scene_group_item* parent = m_entries[index]->parentGroup();
bool is_locked = false;
@ -148,6 +147,10 @@ Scene::replaceItem(Scene::Item_id index, CGAL::Three::Scene_item* item, bool emi
Q_EMIT restoreCollapsedState();
redraw_model();
Q_EMIT selectionChanged(index);
Q_FOREACH(Scene_item* child, group_children)
{
erase(item_id(child));
}
return item;
}
@ -1013,10 +1016,13 @@ Scene::setData(const QModelIndex &index,
{
RenderingMode rendering_mode = static_cast<RenderingMode>(value.toInt());
// Find next supported rendering mode
int counter = 0;
while ( ! item->supportsRenderingMode(rendering_mode)
)
{
rendering_mode = static_cast<RenderingMode>( (rendering_mode+1) % NumberOfRenderingMode );
if(counter++ == NumberOfRenderingMode)
break;
}
item->setRenderingMode(rendering_mode);
QModelIndex nindex = createIndex(m_entries.size()-1,RenderingModeColumn+1);