PolygonalSurfaceContourLineInterpolator
VTKExamples/Cxx/PolyData/PolygonalSurfaceContourLineInterpolator
Code
PolygonalSurfaceContourLineInterpolator.cxx
#include <vtkVersion.h>
#include "vtkSmartPointer.h"
#include "vtkActor.h"
#include "vtkCamera.h"
#include "vtkCellArray.h"
#include "vtkImageDataGeometryFilter.h"
#include "vtkPoints.h"
#include "vtkPolyData.h"
#include "vtkPolyDataCollection.h"
#include "vtkPolyDataMapper.h"
#include "vtkProperty.h"
#include "vtkRenderWindow.h"
#include "vtkRenderWindowInteractor.h"
#include "vtkRenderer.h"
#include "vtkSphereSource.h"
#include "vtkTriangleFilter.h"
#include "vtkXMLPolyDataReader.h"
#include "vtkContourWidget.h"
#include "vtkOrientedGlyphContourRepresentation.h"
#include "vtkPolygonalSurfacePointPlacer.h"
#include "vtkPolygonalSurfaceContourLineInterpolator.h"
int main(int argc, char *argv[])
{
vtkSmartPointer<vtkPolyData> polyData;
if (argc < 2)
{
vtkSmartPointer<vtkSphereSource> sphereSource =
vtkSmartPointer<vtkSphereSource>::New();
sphereSource->SetThetaResolution(40);
sphereSource->SetPhiResolution(20);
sphereSource->Update();
polyData = sphereSource->GetOutput();
}
else
{
vtkSmartPointer<vtkXMLPolyDataReader> reader =
vtkSmartPointer<vtkXMLPolyDataReader>::New();
reader->SetFileName(argv[1]);
reader->Update();
polyData = reader->GetOutput();
}
// The Dijkistra interpolator will not accept cells that aren't triangles
vtkSmartPointer<vtkTriangleFilter> triangleFilter =
vtkSmartPointer<vtkTriangleFilter>::New();
#if VTK_MAJOR_VERSION <= 5
triangleFilter->SetInput( polyData );
#else
triangleFilter->SetInputData( polyData );
#endif
triangleFilter->Update();
vtkSmartPointer<vtkPolyData> pd = triangleFilter->GetOutput();
//Create a mapper and actor
vtkSmartPointer<vtkPolyDataMapper> mapper =
vtkSmartPointer<vtkPolyDataMapper>::New();
mapper->SetInputConnection(triangleFilter->GetOutputPort());
vtkSmartPointer<vtkActor> actor =
vtkSmartPointer<vtkActor>::New();
actor->SetMapper(mapper);
actor->GetProperty()->SetInterpolationToFlat();
// Create the render window, renderer and interactor.
vtkSmartPointer<vtkRenderer> renderer =
vtkSmartPointer<vtkRenderer>::New();
vtkSmartPointer<vtkRenderWindow> renderWindow =
vtkSmartPointer<vtkRenderWindow>::New();
renderWindow->AddRenderer(renderer);
vtkSmartPointer<vtkRenderWindowInteractor> interactor =
vtkSmartPointer<vtkRenderWindowInteractor>::New();
interactor->SetRenderWindow(renderWindow);
// Add the actors to the renderer, set the background and size
renderer->AddActor(actor);
renderer->SetBackground (.3, .4, .5);
// Here comes the contour widget stuff...
vtkSmartPointer<vtkContourWidget> contourWidget =
vtkSmartPointer<vtkContourWidget>::New();
contourWidget->SetInteractor(interactor);
vtkSmartPointer<vtkOrientedGlyphContourRepresentation> rep =
vtkOrientedGlyphContourRepresentation::SafeDownCast(
contourWidget->GetRepresentation());
rep->GetLinesProperty()->SetColor(1, 0.2, 0);
rep->GetLinesProperty()->SetLineWidth(3.0);
vtkSmartPointer<vtkPolygonalSurfacePointPlacer> pointPlacer =
vtkSmartPointer<vtkPolygonalSurfacePointPlacer>::New();
pointPlacer->AddProp(actor);
pointPlacer->GetPolys()->AddItem( pd );
rep->SetPointPlacer(pointPlacer);
vtkSmartPointer<vtkPolygonalSurfaceContourLineInterpolator> interpolator =
vtkSmartPointer<vtkPolygonalSurfaceContourLineInterpolator>::New();
interpolator->GetPolys()->AddItem( pd );
rep->SetLineInterpolator(interpolator);
renderWindow->Render();
interactor->Initialize();
contourWidget->EnabledOn();
interactor->Start();
return EXIT_SUCCESS;
}
CMakeLists.txt
cmake_minimum_required(VERSION 2.8)
PROJECT(PolygonalSurfaceContourLineInterpolator)
find_package(VTK REQUIRED)
include(${VTK_USE_FILE})
add_executable(PolygonalSurfaceContourLineInterpolator MACOSX_BUNDLE PolygonalSurfaceContourLineInterpolator.cxx)
target_link_libraries(PolygonalSurfaceContourLineInterpolator ${VTK_LIBRARIES})
Download and Build PolygonalSurfaceContourLineInterpolator
Click here to download PolygonalSurfaceContourLineInterpolator and its CMakeLists.txt file. Once the tarball PolygonalSurfaceContourLineInterpolator.tar has been downloaded and extracted,
cd PolygonalSurfaceContourLineInterpolator/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:
./PolygonalSurfaceContourLineInterpolator
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.