Tetrahedron
VTKExamples/Cxx/GeometricObjects/Tetrahedron
Code
Tetrahedron.cxx
#include <vtkVersion.h>
#include <vtkSmartPointer.h>
#include <vtkCellArray.h>
#include <vtkTetra.h>
#include <vtkUnstructuredGrid.h>
#include <vtkPoints.h>
#include <vtkCellType.h>
#include <vtkDataSetMapper.h>
#include <vtkActor.h>
#include <vtkRenderWindow.h>
#include <vtkRenderer.h>
#include <vtkRenderWindowInteractor.h>
int main(int, char*[])
{
vtkSmartPointer< vtkPoints > points =
vtkSmartPointer< vtkPoints > :: New();
points->InsertNextPoint(0, 0, 0);
points->InsertNextPoint(1, 0, 0);
points->InsertNextPoint(1, 1, 0);
points->InsertNextPoint(0, 1, 1);
points->InsertNextPoint(5, 5, 5);
points->InsertNextPoint(6, 5, 5);
points->InsertNextPoint(6, 6, 5);
points->InsertNextPoint(5, 6, 6);
// Method 1
vtkSmartPointer<vtkUnstructuredGrid> unstructuredGrid1 =
vtkSmartPointer<vtkUnstructuredGrid>::New();
unstructuredGrid1->SetPoints(points);
vtkIdType ptIds[] = {0, 1, 2, 3};
unstructuredGrid1->InsertNextCell( VTK_TETRA, 4, ptIds );
// Method 2
vtkSmartPointer<vtkUnstructuredGrid> unstructuredGrid2 =
vtkSmartPointer<vtkUnstructuredGrid>::New();
unstructuredGrid2->SetPoints(points);
vtkSmartPointer<vtkTetra> tetra =
vtkSmartPointer<vtkTetra>::New();
tetra->GetPointIds()->SetId(0, 4);
tetra->GetPointIds()->SetId(1, 5);
tetra->GetPointIds()->SetId(2, 6);
tetra->GetPointIds()->SetId(3, 7);
vtkSmartPointer<vtkCellArray> cellArray =
vtkSmartPointer<vtkCellArray>::New();
cellArray->InsertNextCell(tetra);
unstructuredGrid2->SetCells(VTK_TETRA, cellArray);
// Create a mapper and actor
vtkSmartPointer<vtkDataSetMapper> mapper1 =
vtkSmartPointer<vtkDataSetMapper>::New();
#if VTK_MAJOR_VERSION <= 5
mapper1->SetInputConnection(unstructuredGrid1->GetProducerPort());
#else
mapper1->SetInputData(unstructuredGrid1);
#endif
vtkSmartPointer<vtkActor> actor1 =
vtkSmartPointer<vtkActor>::New();
actor1->SetMapper(mapper1);
// Create a mapper and actor
vtkSmartPointer<vtkDataSetMapper> mapper2 =
vtkSmartPointer<vtkDataSetMapper>::New();
#if VTK_MAJOR_VERSION <= 5
mapper2->SetInputConnection(unstructuredGrid2->GetProducerPort());
#else
mapper2->SetInputData(unstructuredGrid2);
#endif
vtkSmartPointer<vtkActor> actor2 =
vtkSmartPointer<vtkActor>::New();
actor2->SetMapper(mapper2);
// 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(actor1);
renderer->AddActor(actor2);
renderer->SetBackground(.3, .6, .3); // Background color green
// Render and interact
renderWindow->Render();
renderWindowInteractor->Start();
return EXIT_SUCCESS;
}
CMakeLists.txt
cmake_minimum_required(VERSION 2.8)
PROJECT(Tetrahedron)
find_package(VTK REQUIRED)
include(${VTK_USE_FILE})
add_executable(Tetrahedron MACOSX_BUNDLE Tetrahedron.cxx)
target_link_libraries(Tetrahedron ${VTK_LIBRARIES})
Download and Build Tetrahedron
Click here to download Tetrahedron and its CMakeLists.txt file. Once the tarball Tetrahedron.tar has been downloaded and extracted,
cd Tetrahedron/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:
./Tetrahedron
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.