CutWithCutFunction
VTKExamples/Cxx/VisualizationAlgorithms/CutWithCutFunction
Code
CutWithCutFunction.cxx
#include <vtkSmartPointer.h>
#include <vtkXMLPolyDataReader.h>
#include <vtkPolyDataMapper.h>
#include <vtkPolyData.h>
#include <vtkPointData.h>
#include <vtkPlane.h>
#include <vtkProperty.h>
#include <vtkActor.h>
#include <vtkCamera.h>
#include <vtkRenderer.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkCutter.h>
int main(int argc, char *argv[])
{
if (argc < 2)
{
std::cout << "Usage: " << argv[0]
<< " inputFilename(.vtp) [numberOfCuts]" << std::endl;
return EXIT_FAILURE;
}
std::string inputFilename = argv[1];
int numberOfCuts = 10;
if (argc > 2)
{
numberOfCuts = atoi(argv[2]);
}
vtkSmartPointer<vtkXMLPolyDataReader> reader =
vtkSmartPointer<vtkXMLPolyDataReader>::New();
reader->SetFileName(inputFilename.c_str());
reader->Update();
double bounds[6];
reader->GetOutput()->GetBounds(bounds);
std::cout << "Bounds: "
<< bounds[0] << ", " << bounds[1] << " "
<< bounds[2] << ", " << bounds[3] << " "
<< bounds[4] << ", " << bounds[5] << std::endl;
vtkSmartPointer<vtkPlane> plane =
vtkSmartPointer<vtkPlane>::New();
plane->SetOrigin((bounds[1] + bounds[0]) / 2.0,
(bounds[3] + bounds[2]) / 2.0,
bounds[4]);
plane->SetNormal(0,0,1);
// Create cutter
double high = plane->EvaluateFunction((bounds[1] + bounds[0]) / 2.0,
(bounds[3] + bounds[2]) / 2.0,
bounds[5]);
vtkSmartPointer<vtkCutter> cutter =
vtkSmartPointer<vtkCutter>::New();
cutter->SetInputConnection(reader->GetOutputPort());
cutter->SetCutFunction(plane);
cutter->GenerateValues(
numberOfCuts,
.99,
.99 * high);
vtkSmartPointer<vtkPolyDataMapper> cutterMapper =
vtkSmartPointer<vtkPolyDataMapper>::New();
cutterMapper->SetInputConnection( cutter->GetOutputPort());
cutterMapper->ScalarVisibilityOff();
// Create cut actor
vtkSmartPointer<vtkActor> cutterActor =
vtkSmartPointer<vtkActor>::New();
cutterActor->GetProperty()->SetColor(1.0,1.0,0);
cutterActor->GetProperty()->SetLineWidth(2);
cutterActor->SetMapper(cutterMapper);
// Create model actor
vtkSmartPointer<vtkPolyDataMapper> modelMapper =
vtkSmartPointer<vtkPolyDataMapper>::New();
modelMapper->SetInputConnection( reader->GetOutputPort());
modelMapper->ScalarVisibilityOff();
vtkSmartPointer<vtkActor> modelActor =
vtkSmartPointer<vtkActor>::New();
modelActor->GetProperty()->SetColor(0.5,1,0.5);
modelActor->SetMapper(modelMapper);
// Create renderers and add actors of plane and model
vtkSmartPointer<vtkRenderer> renderer =
vtkSmartPointer<vtkRenderer>::New();
renderer->AddActor(cutterActor);
renderer->AddActor(modelActor);
// Add renderer to renderwindow and render
vtkSmartPointer<vtkRenderWindow> renderWindow =
vtkSmartPointer<vtkRenderWindow>::New();
renderWindow->AddRenderer(renderer);
renderWindow->SetSize(600, 600);
vtkSmartPointer<vtkRenderWindowInteractor> interactor =
vtkSmartPointer<vtkRenderWindowInteractor>::New();
interactor->SetRenderWindow(renderWindow);
renderer->SetBackground(.2, .3, .4);
renderer->GetActiveCamera()->SetPosition(0, -1, 0);
renderer->GetActiveCamera()->SetFocalPoint(0, 0, 0);
renderer->GetActiveCamera()->SetViewUp(0, 0, 1);
renderer->GetActiveCamera()->Azimuth(30);
renderer->GetActiveCamera()->Elevation(30);
renderer->ResetCamera();
renderWindow->Render();
interactor->Start();
return EXIT_SUCCESS;
}
CMakeLists.txt
cmake_minimum_required(VERSION 2.8)
PROJECT(CutWithCutFunction)
find_package(VTK REQUIRED)
include(${VTK_USE_FILE})
add_executable(CutWithCutFunction MACOSX_BUNDLE CutWithCutFunction.cxx)
target_link_libraries(CutWithCutFunction ${VTK_LIBRARIES})
Download and Build CutWithCutFunction
Click here to download CutWithCutFunction and its CMakeLists.txt file. Once the tarball CutWithCutFunction.tar has been downloaded and extracted,
cd CutWithCutFunction/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:
./CutWithCutFunction
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.