ScaleGlyphs
VTKExamples/Cxx/Visualization/ScaleGlyphs
Code¶
ScaleGlyphs.cxx
#include <vtkVersion.h> #include <vtkSmartPointer.h> #include <vtkPointData.h> #include <vtkCubeSource.h> #include <vtkPolyData.h> #include <vtkPoints.h> #include <vtkGlyph3D.h> #include <vtkCellArray.h> #include <vtkPolyDataMapper.h> #include <vtkActor.h> #include <vtkRenderWindow.h> #include <vtkRenderer.h> #include <vtkRenderWindowInteractor.h> #include <vtkFloatArray.h> 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); // Setup scales vtkSmartPointer<vtkFloatArray> scales = vtkSmartPointer<vtkFloatArray>::New(); scales->SetName("scales"); scales->InsertNextValue(1.0); scales->InsertNextValue(2.0); scales->InsertNextValue(3.0); // Combine into a polydata vtkSmartPointer<vtkPolyData> polydata = vtkSmartPointer<vtkPolyData>::New(); polydata->SetPoints(points); polydata->GetPointData()->SetScalars(scales); // Create anything you want here, we will use a cube for the demo. vtkSmartPointer<vtkCubeSource> cubeSource = vtkSmartPointer<vtkCubeSource>::New(); vtkSmartPointer<vtkGlyph3D> glyph3D = vtkSmartPointer<vtkGlyph3D>::New(); glyph3D->SetScaleModeToScaleByScalar(); glyph3D->SetSourceConnection(cubeSource->GetOutputPort()); #if VTK_MAJOR_VERSION <= 5 glyph3D->SetInput(polydata); #else glyph3D->SetInputData(polydata); #endif glyph3D->Update(); // Create a mapper and actor vtkSmartPointer<vtkPolyDataMapper> mapper = vtkSmartPointer<vtkPolyDataMapper>::New(); mapper->SetInputConnection(glyph3D->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(1,1,1); // Background color white // Render and interact renderWindow->Render(); renderWindowInteractor->Start(); return EXIT_SUCCESS; }
CMakeLists.txt¶
cmake_minimum_required(VERSION 2.8) PROJECT(ScaleGlyphs) find_package(VTK REQUIRED) include(${VTK_USE_FILE}) add_executable(ScaleGlyphs MACOSX_BUNDLE ScaleGlyphs.cxx) target_link_libraries(ScaleGlyphs ${VTK_LIBRARIES})
Download and Build ScaleGlyphs¶
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 ScaleGlyphs and its CMakeLists.txt file. Once the tarball ScaleGlyphs.tar has been downloaded and extracted,
cd ScaleGlyphs/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:
./ScaleGlyphs
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.