surface_actor_item.cpp

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 *  Point Cloud Library (PCL) - www.pointclouds.org
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#include <pcl/apps/modeler/surface_actor_item.h>

#include <pcl/apps/modeler/cloud_mesh.h>

#include <vtkLODActor.h>
#include <vtkPolyData.h>
#include <vtkCellArray.h>
#include <vtkDataSetMapper.h>
#include <vtkPointData.h>
#include <vtkProperty.h>

pcl::modeler::SurfaceActorItem::SurfaceActorItem(QTreeWidgetItem* parent,
                                               const boost::shared_ptr<CloudMesh>& cloud_mesh,
                                               const vtkSmartPointer<vtkRenderWindow>& render_window)
  :ChannelActorItem(parent, cloud_mesh, render_window, vtkSmartPointer<vtkLODActor>::New(), "Surface")
{
}

pcl::modeler::SurfaceActorItem::~SurfaceActorItem ()
{

}

void
pcl::modeler::SurfaceActorItem::initImpl()
{
  poly_data_->SetPoints(cloud_mesh_->getVtkPoints());
  poly_data_->SetStrips(cloud_mesh_->getVtkPolygons());

  vtkSmartPointer<vtkDataArray> scalars;
  cloud_mesh_->getColorScalarsFromField(scalars, color_scheme_);
  poly_data_->GetPointData ()->SetScalars (scalars);
  poly_data_->Update();

  vtkSmartPointer<vtkDataSetMapper> mapper = vtkSmartPointer<vtkDataSetMapper>::New();
  mapper->SetInput(poly_data_);

  double minmax[2];
  scalars->GetRange(minmax);
  mapper->SetScalarRange(minmax);

  mapper->SetScalarModeToUsePointData ();
  mapper->InterpolateScalarsBeforeMappingOn ();
  mapper->ScalarVisibilityOn ();
  mapper->ImmediateModeRenderingOff ();

  vtkSmartPointer<vtkLODActor> actor = vtkSmartPointer<vtkLODActor>(dynamic_cast<vtkLODActor*>(actor_.GetPointer()));
  actor->SetMapper(mapper);

  actor->SetNumberOfCloudPoints(int(std::max<vtkIdType> (1, poly_data_->GetNumberOfPoints () / 10)));
  actor->GetProperty ()->SetInterpolationToFlat ();

  actor->GetProperty ()->SetRepresentationToSurface ();
  actor->GetProperty ()->BackfaceCullingOn ();
  actor->GetProperty ()->EdgeVisibilityOff ();
  actor->GetProperty ()->ShadingOff ();

  return;
}

void
pcl::modeler::SurfaceActorItem::updateImpl()
{
  vtkSmartPointer<vtkDataArray> scalars;
  cloud_mesh_->getColorScalarsFromField(scalars, "random");
  poly_data_->GetPointData ()->SetScalars (scalars);
  double minmax[2];
  scalars->GetRange(minmax);
  actor_->GetMapper()->SetScalarRange(minmax);

  poly_data_->Update();

  return;
}

void
pcl::modeler::SurfaceActorItem::prepareContextMenu(QMenu *) const
{

}

void
pcl::modeler::SurfaceActorItem::prepareProperties(ParameterDialog *)
{

}

void
pcl::modeler::SurfaceActorItem::setProperties()
{

}