ProgrammableGlyphFilter
VTKExamples/Cxx/Visualization/ProgrammableGlyphFilter
Code¶
ProgrammableGlyphFilter.cxx
#include <vtkVersion.h> #include <vtkSmartPointer.h> #include <vtkPointData.h> #include <vtkCubeSource.h> #include <vtkConeSource.h> #include <vtkSphereSource.h> #include <vtkPolyData.h> #include <vtkPoints.h> #include <vtkProgrammableGlyphFilter.h> #include <vtkCellArray.h> #include <vtkPolyDataMapper.h> #include <vtkActor.h> #include <vtkRenderWindow.h> #include <vtkRenderer.h> #include <vtkRenderWindowInteractor.h> #include <vtkFloatArray.h> void CalcGlyph(void *arg) { vtkProgrammableGlyphFilter *glyphFilter = (vtkProgrammableGlyphFilter*) arg; if(!glyphFilter) { std::cerr << "glyphFilter is not valid!" << std::endl; } double pointCoords[3]; glyphFilter->GetPoint(pointCoords); std::cout << "Calling CalcGlyph for point " << glyphFilter->GetPointId() << std::endl; std::cout << "Point coords are: " << pointCoords[0] << " " << pointCoords[1] << " " << pointCoords[2] << std::endl; if(glyphFilter->GetPointId() == 0) { vtkSmartPointer<vtkConeSource> coneSource = vtkSmartPointer<vtkConeSource>::New(); coneSource->SetCenter(pointCoords); #if VTK_MAJOR_VERSION <= 5 glyphFilter->SetSource(coneSource->GetOutput()); #else glyphFilter->SetSourceConnection(coneSource->GetOutputPort()); #endif } else if(glyphFilter->GetPointId() == 1) { vtkSmartPointer<vtkCubeSource> cubeSource = vtkSmartPointer<vtkCubeSource>::New(); cubeSource->SetCenter(pointCoords); #if VTK_MAJOR_VERSION <= 5 glyphFilter->SetSource(cubeSource->GetOutput()); #else glyphFilter->SetSourceConnection(cubeSource->GetOutputPort()); #endif } else if(glyphFilter->GetPointId() == 2) { vtkSmartPointer<vtkSphereSource> sphereSource = vtkSmartPointer<vtkSphereSource>::New(); sphereSource->SetCenter(pointCoords); #if VTK_MAJOR_VERSION <= 5 glyphFilter->SetSource(sphereSource->GetOutput()); #else glyphFilter->SetSourceConnection(sphereSource->GetOutputPort()); #endif } } int main(int, char *[]) { // Create points vtkSmartPointer<vtkPoints> points = vtkSmartPointer<vtkPoints>::New(); points->InsertNextPoint(0,0,0); points->InsertNextPoint(5,0,0); points->InsertNextPoint(10,0,0); // Combine into a polydata vtkSmartPointer<vtkPolyData> polydata = vtkSmartPointer<vtkPolyData>::New(); polydata->SetPoints(points); vtkSmartPointer<vtkProgrammableGlyphFilter> glyphFilter = vtkSmartPointer<vtkProgrammableGlyphFilter>::New(); #if VTK_MAJOR_VERSION <= 5 glyphFilter->SetInput(polydata); #else glyphFilter->SetInputData(polydata); #endif glyphFilter->SetGlyphMethod(CalcGlyph, glyphFilter); //need a default glyph, but this should not be used vtkSmartPointer<vtkConeSource> coneSource = vtkSmartPointer<vtkConeSource>::New(); #if VTK_MAJOR_VERSION <= 5 glyphFilter->SetSource(coneSource->GetOutput()); #else glyphFilter->SetSourceConnection(coneSource->GetOutputPort()); #endif // Create a mapper and actor vtkSmartPointer<vtkPolyDataMapper> mapper = vtkSmartPointer<vtkPolyDataMapper>::New(); mapper->SetInputConnection(glyphFilter->GetOutputPort()); vtkSmartPointer<vtkActor> actor = vtkSmartPointer<vtkActor>::New(); actor->SetMapper(mapper); // 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(actor); renderer->SetBackground(.2, .3, .4); // Render and interact renderWindow->Render(); renderWindowInteractor->Start(); return EXIT_SUCCESS; }
CMakeLists.txt¶
cmake_minimum_required(VERSION 2.8) PROJECT(ProgrammableGlyphFilter) find_package(VTK REQUIRED) include(${VTK_USE_FILE}) add_executable(ProgrammableGlyphFilter MACOSX_BUNDLE ProgrammableGlyphFilter.cxx) target_link_libraries(ProgrammableGlyphFilter ${VTK_LIBRARIES})
Download and Build ProgrammableGlyphFilter¶
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 ProgrammableGlyphFilter and its CMakeLists.txt file. Once the tarball ProgrammableGlyphFilter.tar has been downloaded and extracted,
cd ProgrammableGlyphFilter/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:
./ProgrammableGlyphFilter
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.