BlankPoint
VTKExamples/Cxx/StructuredGrid/BlankPoint
Code¶
BlankPoint.cxx
#include <vtkVersion.h> #include <vtkSmartPointer.h> #include <vtkIdList.h> #include <vtkProperty.h> #include <vtkStructuredGrid.h> #include <vtkXMLStructuredGridWriter.h> #include <vtkMath.h> #include <vtkDataSetMapper.h> #include <vtkActor.h> #include <vtkRenderWindow.h> #include <vtkRenderer.h> #include <vtkRenderWindowInteractor.h> #include <vtkStructuredGridGeometryFilter.h> #include <vtkXMLPolyDataWriter.h> #include <vtkXMLStructuredGridWriter.h> int main(int, char *[]) { // Create a grid vtkSmartPointer<vtkStructuredGrid> structuredGrid = vtkSmartPointer<vtkStructuredGrid>::New(); vtkSmartPointer<vtkPoints> points = vtkSmartPointer<vtkPoints>::New(); unsigned int gridSize = 8; unsigned int counter = 0; // Create a 5x5 grid of points for(unsigned int j = 0; j < gridSize; j++) { for(unsigned int i = 0; i < gridSize; i++) { if(i == 3 && j == 3) // Make one point higher than the rest { points->InsertNextPoint(i, j, 2); std::cout << "The different point is number " << counter << std::endl; } else { points->InsertNextPoint(i, j, 0); // Make most of the points the same height } counter++; } } // Specify the dimensions of the grid structuredGrid->SetDimensions(gridSize,gridSize,1); structuredGrid->SetPoints(points); structuredGrid->BlankPoint(27); structuredGrid->Modified(); // Create a mapper and actor vtkSmartPointer<vtkDataSetMapper> gridMapper = vtkSmartPointer<vtkDataSetMapper>::New(); #if VTK_MAJOR_VERSION <= 5 gridMapper->SetInputConnection(structuredGrid->GetProducerPort()); #else gridMapper->SetInputData(structuredGrid); #endif vtkSmartPointer<vtkActor> gridActor = vtkSmartPointer<vtkActor>::New(); gridActor->SetMapper(gridMapper); gridActor->GetProperty()->EdgeVisibilityOn(); gridActor->GetProperty()->SetEdgeColor(0,0,1); // Create a renderer, render window, and interactor vtkSmartPointer<vtkRenderer> renderer = vtkSmartPointer<vtkRenderer>::New(); vtkSmartPointer<vtkRenderWindow> renderWindow = vtkSmartPointer<vtkRenderWindow>::New(); renderWindow->AddRenderer(renderer); vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor = vtkSmartPointer<vtkRenderWindowInteractor>::New(); renderWindowInteractor->SetRenderWindow(renderWindow); // Add the actor to the scene renderer->AddActor(gridActor); renderer->SetBackground(.3, .6, .3); // Background color green // Render and interact renderWindow->Render(); renderWindowInteractor->Start(); return EXIT_SUCCESS; }
CMakeLists.txt¶
cmake_minimum_required(VERSION 2.8) PROJECT(BlankPoint) find_package(VTK REQUIRED) include(${VTK_USE_FILE}) add_executable(BlankPoint MACOSX_BUNDLE BlankPoint.cxx) target_link_libraries(BlankPoint ${VTK_LIBRARIES})
Download and Build BlankPoint¶
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 BlankPoint and its CMakeLists.txt file. Once the tarball BlankPoint.tar has been downloaded and extracted,
cd BlankPoint/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:
./BlankPoint
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.