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
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.