points_actor_item.cpp

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

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

#include <vtkVertexGlyphFilter.h>
#include <vtkLODActor.h>
#include <vtkDataSetMapper.h>
#include <vtkPointData.h>
#include <vtkProperty.h>


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

pcl::modeler::PointsActorItem::~PointsActorItem ()
{

}

void
pcl::modeler::PointsActorItem::initImpl()
{
  poly_data_->SetPoints(cloud_mesh_->getVtkPoints());
  poly_data_->Update();

  vtkSmartPointer<vtkVertexGlyphFilter> vertex_glyph_filter = vtkSmartPointer<vtkVertexGlyphFilter>::New();
#if VTK_MAJOR_VERSION <= 5
  vertex_glyph_filter->AddInput(poly_data_);
#else
  vertex_glyph_filter->AddInputData(polydata);
#endif
  vertex_glyph_filter->Update();

  vtkSmartPointer<vtkDataSetMapper> mapper = vtkSmartPointer<vtkDataSetMapper>::New();
  mapper->SetInputConnection(vertex_glyph_filter->GetOutputPort());

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

  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();
}

void
pcl::modeler::PointsActorItem::updateImpl()
{
  vtkSmartPointer<vtkDataArray> scalars;
  cloud_mesh_->getColorScalarsFromField(scalars, color_scheme_);
  poly_data_->GetPointData ()->SetScalars (scalars);

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

  poly_data_->Update();

  return;
}


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

}

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

}

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

}