G4VtkClipClosedSurfacePipeline.cc

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#include "G4VtkClipClosedSurfacePipeline.hh"
 
#include "G4VtkViewer.hh"
#include "G4VtkVisContext.hh"
 
#include <vtkActor.h>
#include <vtkClipPolyData.h>
#include <vtkPlane.h>
#include <vtkPlaneCollection.h>
#include <vtkPolyDataAlgorithm.h>
#include <vtkPolyDataMapper.h>
#include <vtkPolyDataNormals.h>
#include <vtkProperty.h>
#include <vtkSmartPointer.h>
#include <vtkClipClosedSurface.h>
 
G4VtkClipClosedSurfacePipeline::G4VtkClipClosedSurfacePipeline(
  G4String nameIn, const G4VtkVisContext& vcIn, vtkSmartPointer<vtkPolyDataAlgorithm> filter,
  G4bool useVcColour)
  : G4VVtkPipeline(nameIn, G4String("G4VtkClipClosedSurfacePipeline"), vcIn, true,
                   vcIn.fViewer->renderer)
{
  // create implicit function for clipping
  plane = vtkSmartPointer<vtkPlane>::New();
  plane->SetOrigin(0, 0, 0);
  plane->SetNormal(0, 1, 0);
 
  vtkNew<vtkPlaneCollection> planes;
  planes->AddItem(plane);
 
  // clipper
  clipper = vtkSmartPointer<vtkClipClosedSurface>::New();
  clipper->SetClippingPlanes(planes);
  clipper->SetInputConnection(filter->GetOutputPort());
  // clipper->SetScalarModeToColors();
  clipper->PassPointDataOn();
 
  // calculate normals with a feature angle of 45 degrees
  auto filterNormals = vtkSmartPointer<vtkPolyDataNormals>::New();
  filterNormals->SetFeatureAngle(45);
  filterNormals->SetInputConnection(clipper->GetOutputPort());
 
  // mapper
  mapper = vtkSmartPointer<vtkPolyDataMapper>::New();
  mapper->SetInputConnection(filterNormals->GetOutputPort());
  mapper->SetColorModeToDirectScalars();
  mapper->ScalarVisibilityOn();
  mapper->SetResolveCoincidentTopologyToPolygonOffset();
  mapper->SetRelativeCoincidentTopologyPolygonOffsetParameters(1, -vc.fDepth);
 
  // add to actor
  actor = vtkSmartPointer<vtkActor>::New();
  actor->SetMapper(mapper);
  actor->SetVisibility(1);
 
  // colour parameters
  if (useVcColour) {
    actor->GetProperty()->SetOpacity(vc.alpha);
    actor->GetProperty()->SetColor(vc.red, vc.green, vc.blue);
  }
 
  // set actor properties from vis context
  if (vc.fDrawingStyle == G4ViewParameters::hsr) {
    actor->GetProperty()->SetRepresentationToSurface();
  }
  else if (vc.fDrawingStyle == G4ViewParameters::hlr) {
    actor->GetProperty()->SetRepresentationToSurface();
  }
  else if (vc.fDrawingStyle == G4ViewParameters::wireframe) {
    actor->GetProperty()->SetRepresentationToWireframe();
  }
 
  // shading parameters
  actor->GetProperty()->SetAmbient(0.2);
  actor->GetProperty()->SetDiffuse(0.7);
  actor->GetProperty()->SetSpecular(0.1);
  actor->GetProperty()->SetSpecularPower(1);
 
  // add to renderer
  vc.fViewer->renderer->AddActor(actor);
}
 
void G4VtkClipClosedSurfacePipeline::SetPlane(const G4Plane3D& planeIn)
{
  auto normal = planeIn.normal();
  auto point = planeIn.point();
  this->SetPlane(point.x(), point.y(), point.z(), normal.x(), normal.y(), normal.z());
}
 
void G4VtkClipClosedSurfacePipeline::SetPlane(G4double x, G4double y, G4double z, G4double nx,
                                              G4double ny, G4double nz)
{
  plane->SetOrigin(x, y, z);
  plane->SetNormal(nx, ny, nz);
  this->Modified();
}
 
void G4VtkClipClosedSurfacePipeline::TransformPlane(G4double dx, G4double dy, G4double dz,
                                                    G4double r00, G4double r01, G4double r02,
                                                    G4double r10, G4double r11, G4double r12,
                                                    G4double r20, G4double r21, G4double r22)
{
  auto o = plane->GetOrigin();
  auto n = plane->GetNormal();
 
  SetPlane(r00 * o[0] + r01 * o[1] + r02 * o[2] + dx, r10 * o[0] + r11 * o[1] + r12 * o[2] + dy,
           r20 * o[0] + r21 * o[1] + r22 * o[2] + dz, r00 * n[0] + r01 * n[1] + r02 * n[2],
           r10 * n[0] + r11 * n[1] + r12 * n[2], r20 * n[0] + r21 * n[1] + r22 * n[2]);
}
 
void G4VtkClipClosedSurfacePipeline::Enable()
{
  actor->SetVisibility(1);
}
void G4VtkClipClosedSurfacePipeline::Disable()
{
  actor->SetVisibility(0);
}