GaussianSplat
VTKExamples/Cxx/Filtering/GaussianSplat
Code¶
GaussianSplat.cxx
#include <vtkVersion.h> #include <vtkSmartPointer.h> #include <vtkPolyData.h> #include <vtkXMLPolyDataWriter.h> #include <vtkContourFilter.h> #include <vtkGaussianSplatter.h> #include <vtkSphereSource.h> #include <vtkPolyDataMapper.h> #include <vtkActor.h> #include <vtkRenderWindow.h> #include <vtkRenderer.h> #include <vtkRenderWindowInteractor.h> int main(int, char *[]) { // Create points on a sphere vtkSmartPointer<vtkSphereSource> sphereSource = vtkSmartPointer<vtkSphereSource>::New(); sphereSource->Update(); vtkSmartPointer<vtkPolyData> polydata = vtkSmartPointer<vtkPolyData>::New(); polydata->SetPoints(sphereSource->GetOutput()->GetPoints()); vtkSmartPointer<vtkGaussianSplatter> splatter = vtkSmartPointer<vtkGaussianSplatter>::New(); #if VTK_MAJOR_VERSION <= 5 splatter->SetInput(polydata); #else splatter->SetInputData(polydata); #endif splatter->SetSampleDimensions(50,50,50); splatter->SetRadius(0.5); splatter->ScalarWarpingOff(); vtkSmartPointer<vtkContourFilter> surface = vtkSmartPointer<vtkContourFilter>::New(); surface->SetInputConnection(splatter->GetOutputPort()); surface->SetValue(0,0.01); // Create a mapper and actor vtkSmartPointer<vtkPolyDataMapper> mapper = vtkSmartPointer<vtkPolyDataMapper>::New(); mapper->SetInputConnection(surface->GetOutputPort()); vtkSmartPointer<vtkActor> actor = vtkSmartPointer<vtkActor>::New(); actor->SetMapper(mapper); // Visualize vtkSmartPointer<vtkRenderer> renderer = vtkSmartPointer<vtkRenderer>::New(); vtkSmartPointer<vtkRenderWindow> renderWindow = vtkSmartPointer<vtkRenderWindow>::New(); renderWindow->AddRenderer(renderer); vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor = vtkSmartPointer<vtkRenderWindowInteractor>::New(); renderWindowInteractor->SetRenderWindow(renderWindow); renderer->AddActor(actor); renderer->SetBackground(1,1,1); // Background color white renderWindow->Render(); renderWindowInteractor->Start(); return EXIT_SUCCESS; }
CMakeLists.txt¶
cmake_minimum_required(VERSION 2.8) PROJECT(GaussianSplat) find_package(VTK REQUIRED) include(${VTK_USE_FILE}) add_executable(GaussianSplat MACOSX_BUNDLE GaussianSplat.cxx) target_link_libraries(GaussianSplat ${VTK_LIBRARIES})
Download and Build GaussianSplat¶
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 Some tarballs may be missing or out-of-date.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 GaussianSplat and its CMakeLists.txt file. Once the tarball GaussianSplat.tar has been downloaded and extracted,
cd GaussianSplat/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:
./GaussianSplat
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.