128 lines
4.0 KiB
C++
128 lines
4.0 KiB
C++
#include "dihedral_angles_filter.h"
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#include "remove_external_cells_filter.h"
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#include "surface_points_filter.h"
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#include "project_surface_points_on_poly.h"
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#include "relaxation_filter.h"
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#include <vtkCellArrayIterator.h>
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#include <vtkCellData.h>
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#include <vtkDataSetReader.h>
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#include <vtkOBJReader.h>
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#include <vtkPolyData.h>
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#include <vtkPolyDataReader.h>
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#include <vtkUnstructuredGrid.h>
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#include <vtkUnstructuredGridReader.h>
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#include <vtkXMLPolyDataReader.h>
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#include <vtkXMLUnstructuredGridReader.h>
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#include <vtkXMLUnstructuredGridWriter.h>
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#include <vtksys/SystemTools.hxx>
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#ifdef USE_VIEWER
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#include <vtkCamera.h>
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#include <vtkNamedColors.h>
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#include <vtkOpenGLProjectedTetrahedraMapper.h>
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#include <vtkPiecewiseFunction.h>
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#include <vtkRenderWindow.h>
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#include <vtkRenderWindowInteractor.h>
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#include <vtkRenderer.h>
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#include <vtkVolume.h>
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#include <vtkVolumeMapper.h>
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#include <vtkVolumeProperty.h>
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#endif // USE_VIEWER
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#include <array>
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vtkSmartPointer<vtkAlgorithm> readerFromFileName(const char *fileName) {
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std::string extension =
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vtksys::SystemTools::GetFilenameLastExtension(fileName);
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if (extension == ".vtk") {
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auto reader = vtkDataSetReader::New();
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reader->SetFileName(fileName);
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return {reader};
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} else if (extension == ".vtu") {
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auto reader = vtkXMLUnstructuredGridReader::New();
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reader->SetFileName(fileName);
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return {reader};
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} else if (extension == ".vtp") {
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auto reader = vtkXMLPolyDataReader::New();
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reader->SetFileName(fileName);
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return {reader};
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} else if (extension == ".obj") {
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auto reader = vtkOBJReader::New();
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reader->SetFileName(fileName);
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return {reader};
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}
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throw std::runtime_error("Invalid file extension.");
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}
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int main(int argc, char **argv) {
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if (argc != 3) {
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std::cerr << "Usage: " << argv[0] << " tetmesh polydata" << std::endl;
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return EXIT_FAILURE;
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}
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auto tetMeshReader = readerFromFileName(argv[1]);
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auto polyMeshReader = readerFromFileName(argv[2]);
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vtkNew<RemoveExternalCellsFilter> removeExternalCellsFilter;
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removeExternalCellsFilter->SetInputConnection(0,
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tetMeshReader->GetOutputPort());
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removeExternalCellsFilter->SetInputConnection(1,
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polyMeshReader->GetOutputPort());
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vtkNew<SurfacePointsFilter> surfacePointsFilter;
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surfacePointsFilter->SetInputConnection(
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removeExternalCellsFilter->GetOutputPort());
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vtkNew<ProjectSurfacePointsOnPoly> project;
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project->SetInputConnection(0, surfacePointsFilter->GetOutputPort());
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project->SetInputConnection(1, polyMeshReader->GetOutputPort());
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vtkNew<RelaxationFilter> relaxationFilter;
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relaxationFilter->SetInputConnection(project->GetOutputPort());
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vtkNew<DihedralAnglesFilter> dihedralAnglesFilter;
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dihedralAnglesFilter->SetInputConnection(
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relaxationFilter->GetOutputPort());
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vtkNew<vtkXMLUnstructuredGridWriter> writer;
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writer->SetInputConnection(dihedralAnglesFilter->GetOutputPort());
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writer->SetDataModeToAscii();
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writer->SetFileName("out.vtu");
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writer->Write();
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#ifdef USE_VIEWER
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/* Volume rendering properties */
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vtkNew<vtkOpenGLProjectedTetrahedraMapper> volumeMapper;
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volumeMapper->SetInputConnection(externalPointsFilter->GetOutputPort());
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vtkNew<vtkVolume> volume;
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volume->SetMapper(volumeMapper);
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vtkNew<vtkPiecewiseFunction> transferFunction;
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transferFunction->AddPoint(-1, 0);
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transferFunction->AddPoint(1, 1);
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volume->GetProperty()->SetScalarOpacity(transferFunction);
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volume->GetProperty()->SetColor(transferFunction);
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/* Renderer */
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vtkNew<vtkNamedColors> colors;
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std::array<unsigned char, 4> bkg{{26, 51, 102, 255}};
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colors->SetColor("BkgColor", bkg.data());
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vtkNew<vtkRenderer> renderer;
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renderer->AddVolume(volume);
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renderer->SetBackground(colors->GetColor3d("BkgColor").GetData());
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renderer->ResetCamera();
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renderer->GetActiveCamera()->Zoom(1.5);
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vtkNew<vtkRenderWindow> renderWindow;
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renderWindow->SetSize(300, 300);
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renderWindow->AddRenderer(renderer);
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renderWindow->SetWindowName("PFE");
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vtkNew<vtkRenderWindowInteractor> renderWindowInteractor;
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renderWindowInteractor->SetRenderWindow(renderWindow);
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renderWindow->Render();
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renderWindowInteractor->Start();
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#endif
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return EXIT_SUCCESS;
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}
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