DeletePoint
VTKExamples/Cxx/PolyData/DeletePoint
Code
DeletePoint.cxx
#include <vtkSmartPointer.h>
#include <vtkPoints.h>
#include <vtkPolyData.h>
void OutputPoints(vtkSmartPointer<vtkPoints> points);
void ReallyDeletePoint(vtkSmartPointer<vtkPoints> points, vtkIdType id);
int main(int, char *[])
{
// Create a set of points
vtkSmartPointer<vtkPoints> points =
vtkSmartPointer<vtkPoints>::New();
points->InsertNextPoint ( 1.0, 0.0, 0.0 );
points->InsertNextPoint ( 0.0, 1.0, 0.0 );
points->InsertNextPoint ( 0.0, 0.0, 1.0 );
std::cout << "Number of points: " << points->GetNumberOfPoints() << std::endl;
OutputPoints(points);
ReallyDeletePoint(points, 1);
std::cout << "Number of points: " << points->GetNumberOfPoints() << std::endl;
OutputPoints(points);
return EXIT_SUCCESS;
}
void OutputPoints(vtkSmartPointer<vtkPoints> points)
{
for(vtkIdType i = 0; i < points->GetNumberOfPoints(); i++)
{
double p[3];
points->GetPoint(i,p);
cout << p[0] << " " << p[1] << " " << p[2] << endl;
}
}
void ReallyDeletePoint(vtkSmartPointer<vtkPoints> points, vtkIdType id)
{
vtkSmartPointer<vtkPoints> newPoints =
vtkSmartPointer<vtkPoints>::New();
for(vtkIdType i = 0; i < points->GetNumberOfPoints(); i++)
{
if(i != id)
{
double p[3];
points->GetPoint(i,p);
newPoints->InsertNextPoint(p);
}
}
points->ShallowCopy(newPoints);
}
CMakeLists.txt
cmake_minimum_required(VERSION 2.8)
PROJECT(DeletePoint)
find_package(VTK REQUIRED)
include(${VTK_USE_FILE})
add_executable(DeletePoint MACOSX_BUNDLE DeletePoint.cxx)
target_link_libraries(DeletePoint ${VTK_LIBRARIES})
Download and Build DeletePoint
Click here to download DeletePoint and its CMakeLists.txt file. Once the tarball DeletePoint.tar has been downloaded and extracted,
cd DeletePoint/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:
./DeletePoint
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.