// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
// This example demonstrates how to implement a vtkGenericDataSet
// (here vtkBridgeDataSet) and to use vtkGenericProbeFilter on it.
//
// The command line arguments are:
// -I        => run in interactive mode; unless this is used, the program will
//              not allow interaction and exit
// -D <path> => path to the data; the data should be in <path>/Data/

// #define ADD_GEOMETRY
// #define STD_PROBE

#include "vtkActor.h"
#include "vtkAttributesErrorMetric.h"
#include "vtkBridgeDataSet.h"
#include "vtkDataSetMapper.h"
#include "vtkGenericCellTessellator.h"
#include "vtkGenericGeometryFilter.h"
#include "vtkGenericProbeFilter.h"
#include "vtkGeometricErrorMetric.h"
#include "vtkLookupTable.h"
#include "vtkPlaneSource.h"
#include "vtkPointData.h"
#include "vtkPolyDataMapper.h"
#include "vtkProbeFilter.h" // std probe filter, to compare
#include "vtkProperty.h"
#include "vtkRegressionTestImage.h"
#include "vtkRenderWindow.h"
#include "vtkRenderWindowInteractor.h"
#include "vtkRenderer.h"
#include "vtkSimpleCellTessellator.h"
#include "vtkTestUtilities.h"
#include "vtkTransform.h"
#include "vtkTransformPolyDataFilter.h"
#include "vtkUnstructuredGrid.h"
#include "vtkXMLUnstructuredGridReader.h"

#include <cassert>
#include <iostream>

int TestGenericProbeFilter(int argc, char* argv[])
{
  // Standard rendering classes
  vtkRenderer* renderer = vtkRenderer::New();
  vtkRenderWindow* renWin = vtkRenderWindow::New();
  renWin->AddRenderer(renderer);
  renderer->Delete();
  vtkRenderWindowInteractor* iren = vtkRenderWindowInteractor::New();
  iren->SetRenderWindow(renWin);
  renWin->Delete();

  // Load the mesh geometry and data from a file
  vtkXMLUnstructuredGridReader* reader = vtkXMLUnstructuredGridReader::New();
  char* cfname = vtkTestUtilities::ExpandDataFileName(argc, argv, "Data/quadraticTetra01.vtu");

  reader->SetFileName(cfname);
  delete[] cfname;

  // Force reading
  reader->Update();

  // Initialize the bridge
  vtkBridgeDataSet* ds = vtkBridgeDataSet::New();
  ds->SetDataSet(reader->GetOutput());
  reader->Delete();

  // Set the error metric thresholds:
  // 1. for the geometric error metric
  vtkGeometricErrorMetric* geometricError = vtkGeometricErrorMetric::New();
  geometricError->SetRelativeGeometricTolerance(0.1, ds);

  ds->GetTessellator()->GetErrorMetrics()->AddItem(geometricError);
  geometricError->Delete();

  // 2. for the attribute error metric
  vtkAttributesErrorMetric* attributesError = vtkAttributesErrorMetric::New();
  attributesError->SetAttributeTolerance(0.01);

  ds->GetTessellator()->GetErrorMetrics()->AddItem(attributesError);
  attributesError->Delete();

  std::cout << "input unstructured grid: " << ds << std::endl;

  static_cast<vtkSimpleCellTessellator*>(ds->GetTessellator())->SetMaxSubdivisionLevel(10);

  vtkIndent indent;
  ds->PrintSelf(std::cout, indent);

#ifdef ADD_GEOMETRY
  // Geometry

  // Create the filter
  vtkGenericGeometryFilter* geom = vtkGenericGeometryFilter::New();
  geom->SetInputData(ds);

  geom->Update(); // So that we can call GetRange() on the scalars

  assert(geom->GetOutput() != 0);

  // This creates a blue to red lut.
  vtkLookupTable* lut2 = vtkLookupTable::New();
  lut2->SetHueRange(0.667, 0.0);

  vtkPolyDataMapper* mapper2 = vtkPolyDataMapper::New();
  mapper2->SetLookupTable(lut2);
  lut2->Delete();
  mapper2->SetInputConnection(0, geom->GetOutputPort(0));
  geom->Delete();

  if (geom->GetOutput()->GetPointData() != 0)
  {
    if (geom->GetOutput()->GetPointData()->GetScalars() != 0)
    {
      mapper2->SetScalarRange(geom->GetOutput()->GetPointData()->GetScalars()->GetRange());
    }
  }
  vtkActor* actor2 = vtkActor::New();
  actor2->SetMapper(mapper2);
  mapper2->Delete();
  renderer->AddActor(actor2); // the surface
  actor2->Delete();
#endif

  // Create the probe plane
  vtkPlaneSource* plane = vtkPlaneSource::New();
  plane->SetResolution(100, 100);
  vtkTransform* transp = vtkTransform::New();
  transp->Translate(0.5, 0.5, 0);
  transp->Scale(5, 5, 5);
  vtkTransformPolyDataFilter* tpd = vtkTransformPolyDataFilter::New();
  tpd->SetInputConnection(0, plane->GetOutputPort(0));
  plane->Delete();
  tpd->SetTransform(transp);
  transp->Delete();

#ifndef STD_PROBE
  // Create the filter
  vtkGenericProbeFilter* probe = vtkGenericProbeFilter::New();
  probe->SetInputConnection(0, tpd->GetOutputPort(0));
  tpd->Delete();
  probe->SetSourceData(ds);

  probe->Update(); // So that we can call GetRange() on the scalars

  assert(probe->GetOutput() != nullptr);

  // This creates a blue to red lut.
  vtkLookupTable* lut = vtkLookupTable::New();
  lut->SetHueRange(0.667, 0.0);

  vtkDataSetMapper* mapper = vtkDataSetMapper::New();
  mapper->SetLookupTable(lut);
  lut->Delete();
  mapper->SetInputConnection(0, probe->GetOutputPort(0));
  probe->Delete();

  if (probe->GetOutput()->GetPointData() != nullptr)
  {
    if (probe->GetOutput()->GetPointData()->GetScalars() != nullptr)
    {
      mapper->SetScalarRange(probe->GetOutput()->GetPointData()->GetScalars()->GetRange());
    }
  }

  vtkActor* actor = vtkActor::New();
  actor->SetMapper(mapper);
  mapper->Delete();
  renderer->AddActor(actor);
  actor->Delete();

#else
  // std probe, to compare

  vtkProbeFilter* stdProbe = vtkProbeFilter::New();
  stdProbe->SetInputConnection(0, tpd->GetOutputPort(0));
  tpd->Delete();
  stdProbe->SetSourceData(ds->GetDataSet());

  stdProbe->Update(); // So that we can call GetRange() on the scalars

  assert(stdProbe->GetOutput() != 0);

  // This creates a blue to red lut.
  vtkLookupTable* lut4 = vtkLookupTable::New();
  lut4->SetHueRange(0.667, 0.0);

  vtkDataSetMapper* mapper4 = vtkDataSetMapper::New();
  mapper4->SetLookupTable(lut4);
  lut4->Delete();
  mapper4->SetInputConnection(0, stdProbe->GetOutputPort(0));
  stdProbe->Delete();

  if (stdProbe->GetOutput()->GetPointData() != 0)
  {
    if (stdProbe->GetOutput()->GetPointData()->GetScalars() != 0)
    {
      mapper4->SetScalarRange(stdProbe->GetOutput()->GetPointData()->GetScalars()->GetRange());
    }
  }

  vtkActor* actor4 = vtkActor::New();
  actor4->SetMapper(mapper4);
  mapper4->Delete();
  renderer->AddActor(actor4);
  actor4->Delete();
#endif // #ifdef STD_PROBE

  // Standard testing code.
  renderer->SetBackground(0.5, 0.5, 0.5);
  renWin->SetSize(300, 300);
  renWin->Render();
  int retVal = vtkRegressionTestImage(renWin);
  if (retVal == vtkRegressionTester::DO_INTERACTOR)
  {
    iren->Start();
  }

  // Cleanup
  iren->Delete();
  ds->Delete();

  return !retVal;
}
