# CutWithCutFunction

Repository source: CutWithCutFunction

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See (Python)

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### Code¶

CutWithCutFunction.cxx

#include <vtkActor.h>
#include <vtkCamera.h>
#include <vtkCutter.h>
#include <vtkNamedColors.h>
#include <vtkNew.h>
#include <vtkPlane.h>
#include <vtkPointData.h>
#include <vtkPolyDataMapper.h>
#include <vtkProperty.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkRenderer.h>

#include <iostream>
#include <string>

int main(int argc, char* argv[])
{
if (argc < 2)
{
std::cout << "Usage: " << argv[0] << " inputFilename(.vtp) [numberOfCuts]"
<< std::endl;
std::cout << "where: inputFilename is Torso.vtp and";
std::cout << " numberOfCuts is 20." << std::endl;
return EXIT_FAILURE;
}
std::string inputFilename = argv[1];

int numberOfCuts = 10;
if (argc > 2)
{
numberOfCuts = atoi(argv[2]);
}

vtkNew<vtkNamedColors> colors;

double bounds[6];
std::cout << "Bounds: " << bounds[0] << ", " << bounds[1] << " " << bounds[2]
<< ", " << bounds[3] << " " << bounds[4] << ", " << bounds[5]
<< std::endl;

vtkNew<vtkPlane> plane;
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]);

vtkNew<vtkCutter> cutter;
cutter->SetCutFunction(plane);
cutter->GenerateValues(numberOfCuts, .99, .99 * high);

vtkNew<vtkPolyDataMapper> cutterMapper;
cutterMapper->SetInputConnection(cutter->GetOutputPort());
cutterMapper->ScalarVisibilityOff();

// Create cut actor.
vtkNew<vtkActor> cutterActor;
cutterActor->GetProperty()->SetColor(colors->GetColor3d("Banana").GetData());
cutterActor->GetProperty()->SetLineWidth(2);
cutterActor->SetMapper(cutterMapper);

// Create model actor.
vtkNew<vtkPolyDataMapper> modelMapper;
modelMapper->ScalarVisibilityOff();

vtkNew<vtkActor> modelActor;
modelActor->GetProperty()->SetColor(colors->GetColor3d("Flesh").GetData());
modelActor->SetMapper(modelMapper);

// Create renderers and add actors of plane and model.
vtkNew<vtkRenderer> renderer;

// Add renderer to renderwindow and render.
vtkNew<vtkRenderWindow> renderWindow;
renderWindow->SetSize(600, 600);

vtkNew<vtkRenderWindowInteractor> interactor;
interactor->SetRenderWindow(renderWindow);

renderer->SetBackground(colors->GetColor3d("Burlywood").GetData());
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();
renderWindow->SetWindowName("CutWithCutFunction");

interactor->Start();

return EXIT_SUCCESS;
}


### CMakeLists.txt¶

cmake_minimum_required(VERSION 3.12 FATAL_ERROR)

project(CutWithCutFunction)

find_package(VTK COMPONENTS
CommonColor
CommonCore
CommonDataModel
FiltersCore
IOXML
InteractionStyle
RenderingContextOpenGL2
RenderingCore
RenderingFreeType
RenderingGL2PSOpenGL2
RenderingOpenGL2
)

if (NOT VTK_FOUND)
message(FATAL_ERROR "CutWithCutFunction: Unable to find the VTK build folder.")
endif()

# Prevent a "command line is too long" failure in Windows.
set(CMAKE_NINJA_FORCE_RESPONSE_FILE "ON" CACHE BOOL "Force Ninja to use response files.")
target_link_libraries(CutWithCutFunction PRIVATE ${VTK_LIBRARIES} ) # vtk_module_autoinit is needed vtk_module_autoinit( TARGETS CutWithCutFunction MODULES${VTK_LIBRARIES}
)


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

Be sure to add the VTK bin directory to your path. This will resolve the VTK dll's at run time.