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#include "G4VtkPolydataPolygonPipeline.hh"

#include "G4VisAttributes.hh"
#include "G4VtkViewer.hh"
#include "G4VtkVisContext.hh"

#include <vtkActor.h>
#include <vtkPolyDataMapper.h>
#include <vtkProperty.h>
#include <vtkRegularPolygonSource.h>
#include <vtkVertexGlyphFilter.h>

std::size_t G4VtkPolydataPolygonPipeline::MakeHash(const G4VisAttributes* pVA)
{
  return std::hash<G4VisAttributes>{}(*pVA);
}

G4VtkPolydataPolygonPipeline::G4VtkPolydataPolygonPipeline(G4String nameIn,
                                                           const G4VtkVisContext& vcIn,
                                                           const G4VisAttributes* pVisAttributes)
  : G4VtkPolydataPipeline(nameIn, vcIn)
{
  // Set pipeline type
  SetTypeName(G4String("G4VtkPolydataSpherePipeline"));

  // Get vis attributes
  G4Color colour = pVisAttributes->GetColour();
  G4double opacity = colour.GetAlpha();
  G4double lineWidth = pVisAttributes->GetLineWidth();

  // Draw in world coordinates.
  vtkSmartPointer<vtkRegularPolygonSource> polygonSource =
    vtkSmartPointer<vtkRegularPolygonSource>::New();
  polygonSource->SetNumberOfSides(4);
  polygonSource->SetRadius(vc.fSize);

  // vertex glyph filter
  auto glyphFilter = vtkSmartPointer<vtkVertexGlyphFilter>::New();
  glyphFilter->SetInputData(polydata);
  AddFilter(glyphFilter);

  // Setup actor and mapper
  mapper->SetInputConnection(glyphFilter->GetOutputPort());

  GetActor()->GetProperty()->SetLineWidth(lineWidth);
  GetActor()->GetProperty()->SetColor(colour.GetRed(), colour.GetGreen(), colour.GetBlue());
  GetActor()->GetProperty()->SetOpacity(opacity);
  GetActor()->SetVisibility(1);

  GetActor()->GetProperty()->SetRenderPointsAsSpheres(true);
  GetActor()->GetProperty()->SetPointSize(vc.fSize * 5);

  vc.fViewer->renderer->AddActor(GetActor());
}