StructuredDataTypes
VTKExamples/Cxx/Visualization/StructuredDataTypes
Code¶
StructuredDataTypes.cxx
#include <vtkVersion.h> #include <vtkSmartPointer.h> #include <vtkDataSetMapper.h> #include <vtkProperty.h> #include <vtkRenderWindow.h> #include <vtkRenderWindowInteractor.h> #include <vtkRenderer.h> #include <vtkTransform.h> #include <vtkDoubleArray.h> #include <vtkImageData.h> #include <vtkRectilinearGrid.h> #include <vtkStructuredGrid.h> #include <vtkXMLImageDataWriter.h> #include <vtkXMLRectilinearGridWriter.h> #include <vtkXMLStructuredGridWriter.h> static void ImageData(vtkImageData* data, const int gridSize); static void RectilinearGrid(vtkRectilinearGrid* data, const int gridSize); static void StructuredGrid(vtkStructuredGrid* data, const int gridSize); int main(int, char *[]) { int gridSize = 5; vtkSmartPointer<vtkImageData> imageData = vtkSmartPointer<vtkImageData>::New(); ImageData(imageData, gridSize); vtkSmartPointer<vtkDataSetMapper> imageDataMapper = vtkSmartPointer<vtkDataSetMapper>::New(); #if VTK_MAJOR_VERSION <= 5 imageDataMapper->SetInputConnection(imageData->GetProducerPort()); #else imageDataMapper->SetInputData(imageData); imageDataMapper->ScalarVisibilityOff(); #endif vtkSmartPointer<vtkActor> imageDataActor = vtkSmartPointer<vtkActor>::New(); imageDataActor->GetProperty()->SetRepresentationToWireframe(); imageDataActor->SetMapper(imageDataMapper); vtkSmartPointer<vtkRectilinearGrid> rectilinearGrid = vtkSmartPointer<vtkRectilinearGrid>::New(); RectilinearGrid(rectilinearGrid, gridSize); vtkSmartPointer<vtkDataSetMapper> rectilinearGridMapper = vtkSmartPointer<vtkDataSetMapper>::New(); #if VTK_MAJOR_VERSION <= 5 rectilinearGridMapper->SetInputConnection(rectilinearGrid->GetProducerPort()); #else rectilinearGridMapper->SetInputData(rectilinearGrid); #endif vtkSmartPointer<vtkActor> rectilinearGridActor = vtkSmartPointer<vtkActor>::New(); rectilinearGridActor->GetProperty()->SetRepresentationToWireframe(); rectilinearGridActor->SetMapper(rectilinearGridMapper); vtkSmartPointer<vtkStructuredGrid> structuredGrid = vtkSmartPointer<vtkStructuredGrid>::New(); StructuredGrid(structuredGrid, gridSize); vtkSmartPointer<vtkDataSetMapper> structuredGridMapper = vtkSmartPointer<vtkDataSetMapper>::New(); #if VTK_MAJOR_VERSION <= 5 structuredGridMapper->SetInputConnection(structuredGrid->GetProducerPort()); #else structuredGridMapper->SetInputData(structuredGrid); #endif vtkSmartPointer<vtkActor> structuredGridActor = vtkSmartPointer<vtkActor>::New(); structuredGridActor->GetProperty()->SetRepresentationToWireframe(); structuredGridActor->SetMapper(structuredGridMapper); // There will be one render window vtkSmartPointer<vtkRenderWindow> renderWindow = vtkSmartPointer<vtkRenderWindow>::New(); renderWindow->SetSize(600, 300); // And one interactor vtkSmartPointer<vtkRenderWindowInteractor> interactor = vtkSmartPointer<vtkRenderWindowInteractor>::New(); interactor->SetRenderWindow(renderWindow); // Define viewport ranges // (xmin, ymin, xmax, ymax) double leftViewport[4] = {0.0, 0.0, 0.33, 1.0}; double centerViewport[4] = {0.33, 0.0, 0.66, 1.0}; double rightViewport[4] = {0.66, 0.0, 1.0, 1.0}; // Setup three renderers vtkSmartPointer<vtkRenderer> leftRenderer = vtkSmartPointer<vtkRenderer>::New(); renderWindow->AddRenderer(leftRenderer); leftRenderer->SetViewport(leftViewport); leftRenderer->SetBackground(.6, .5, .4); vtkSmartPointer<vtkRenderer> centerRenderer = vtkSmartPointer<vtkRenderer>::New(); renderWindow->AddRenderer(centerRenderer); centerRenderer->SetViewport(centerViewport); centerRenderer->SetBackground(.4, .5, .6); vtkSmartPointer<vtkRenderer> rightRenderer = vtkSmartPointer<vtkRenderer>::New(); renderWindow->AddRenderer(rightRenderer); rightRenderer->SetViewport(rightViewport); rightRenderer->SetBackground(.5, .4, .6); // Add the image on the left, rectilinear in the center, structured on the right leftRenderer->AddActor(imageDataActor); centerRenderer->AddActor(rectilinearGridActor); rightRenderer->AddActor(structuredGridActor); leftRenderer->ResetCamera(); centerRenderer->ResetCamera(); rightRenderer->ResetCamera(); //rightRenderer->GetActiveCamera()->Azimuth(30); //rightRenderer->GetActiveCamera()->Elevation(30); renderWindow->Render(); interactor->Start(); return EXIT_SUCCESS; } void ImageData(vtkImageData* data, const int gridSize) { data->SetExtent(0,gridSize-1,0,gridSize-1,0,gridSize-1); #if VTK_MAJOR_VERSION <= 5 data->SetNumberOfScalarComponents(1); data->SetScalarTypeToDouble(); #else data->AllocateScalars(VTK_DOUBLE,1); #endif vtkSmartPointer<vtkXMLImageDataWriter> writer = vtkSmartPointer<vtkXMLImageDataWriter>::New(); writer->SetFileName("imagedata.vti"); #if VTK_MAJOR_VERSION <= 5 writer->SetInputConnection(data->GetProducerPort()); #else writer->SetInputData(data); #endif writer->Write(); } void RectilinearGrid(vtkRectilinearGrid* data, const int gridSize) { data->SetExtent(0,gridSize-1,0,gridSize-1,0,gridSize-1); vtkSmartPointer<vtkDoubleArray> xCoords = vtkSmartPointer<vtkDoubleArray>::New(); xCoords->SetNumberOfComponents(1); vtkSmartPointer<vtkDoubleArray> yCoords = vtkSmartPointer<vtkDoubleArray>::New(); yCoords->SetNumberOfComponents(1); vtkSmartPointer<vtkDoubleArray> zCoords = vtkSmartPointer<vtkDoubleArray>::New(); zCoords->SetNumberOfComponents(1); for(int i = 0; i < gridSize; i++) { if(i == 0) { xCoords->InsertNextValue(0); yCoords->InsertNextValue(0); zCoords->InsertNextValue(0); continue; } double oldX = xCoords->GetValue(i-1); double oldY = xCoords->GetValue(i-1); double oldZ = xCoords->GetValue(i-1); xCoords->InsertNextValue(oldX + i*i); yCoords->InsertNextValue(oldY + i*i); zCoords->InsertNextValue(oldZ + i*i); } data->SetXCoordinates(xCoords); data->SetYCoordinates(yCoords); data->SetZCoordinates(zCoords); vtkSmartPointer<vtkXMLRectilinearGridWriter> writer = vtkSmartPointer<vtkXMLRectilinearGridWriter>::New(); writer->SetFileName("rectilineargrid.vtr"); #if VTK_MAJOR_VERSION <= 5 writer->SetInputConnection(data->GetProducerPort()); #else writer->SetInputData(data); #endif writer->Write(); } void StructuredGrid(vtkStructuredGrid* data, const int gridSize) { data->SetExtent(0,gridSize-1,0,gridSize-1,0,gridSize-1); vtkSmartPointer<vtkPoints> points = vtkSmartPointer<vtkPoints>::New(); vtkSmartPointer<vtkTransform> transform = vtkSmartPointer<vtkTransform>::New(); transform->RotateZ(30); for(int k = 0; k < gridSize; k++) { for(int j = 0; j < gridSize; j++) { for(int i = 0; i < gridSize; i++) { double p[4]; p[0] = i; p[1] = j; p[2] = k; p[3] = 1; double pout[4]; transform->MultiplyPoint(p, pout); points->InsertNextPoint(pout[0], pout[1], pout[2]); } } } data->SetPoints(points); vtkSmartPointer<vtkXMLStructuredGridWriter> writer = vtkSmartPointer<vtkXMLStructuredGridWriter>::New(); writer->SetFileName("structuredgrid.vts"); #if VTK_MAJOR_VERSION <= 5 writer->SetInputConnection(data->GetProducerPort()); #else writer->SetInputData(data); #endif writer->Write(); }
CMakeLists.txt¶
cmake_minimum_required(VERSION 2.8) PROJECT(StructuredDataTypes) find_package(VTK REQUIRED) include(${VTK_USE_FILE}) add_executable(StructuredDataTypes MACOSX_BUNDLE StructuredDataTypes.cxx) target_link_libraries(StructuredDataTypes ${VTK_LIBRARIES})
Download and Build StructuredDataTypes¶
Danger
The generation of tar files has not been ported to the new VTKExamples. Some tarballs may be missing or out-of-date.
Click here to download StructuredDataTypes and its CMakeLists.txt file. Once the tarball StructuredDataTypes.tar has been downloaded and extracted,
cd StructuredDataTypes/build
If VTK is installed:
cmake ..
If VTK is not installed but compiled on your system, you will need to specify the path to your VTK build:
cmake -DVTK_DIR:PATH=/home/me/vtk_build ..
Build the project:
make
and run it:
./StructuredDataTypes
WINDOWS USERS PLEASE NOTE: Be sure to add the VTK bin directory to your path. This will resolve the VTK dll's at run time.