Vertex
vtk-examples/Cxx/GeometricObjects/Vertex
Description¶
The vertex is a primary zero-dimensional cell. It is defined by a single point.
Question
If you have a question about this example, please use the VTK Discourse Forum
Code¶
Vertex.cxx
#include <vtkActor.h>
#include <vtkCellArray.h>
#include <vtkNamedColors.h>
#include <vtkNew.h>
#include <vtkPoints.h>
#include <vtkPolyData.h>
#include <vtkPolyDataMapper.h>
#include <vtkProperty.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkRenderer.h>
#include <vtkVertex.h>
int main(int, char*[])
{
vtkNew<vtkNamedColors> colors;
vtkNew<vtkPoints> points;
points->InsertNextPoint(0, 0, 0);
vtkNew<vtkVertex> vertex;
vertex->GetPointIds()->SetId(0, 0);
vtkNew<vtkCellArray> vertices;
vertices->InsertNextCell(vertex);
vtkNew<vtkPolyData> polydata;
polydata->SetPoints(points);
polydata->SetVerts(vertices);
// Setup actor and mapper
vtkNew<vtkPolyDataMapper> mapper;
mapper->SetInputData(polydata);
vtkNew<vtkActor> actor;
actor->SetMapper(mapper);
actor->GetProperty()->SetPointSize(30);
actor->GetProperty()->SetColor(colors->GetColor3d("PeachPuff").GetData());
// Setup render window, renderer, and interactor
vtkNew<vtkRenderer> renderer;
vtkNew<vtkRenderWindow> renderWindow;
renderWindow->SetWindowName("Vertex");
renderWindow->AddRenderer(renderer);
vtkNew<vtkRenderWindowInteractor> renderWindowInteractor;
renderWindowInteractor->SetRenderWindow(renderWindow);
renderer->AddActor(actor);
renderer->SetBackground(colors->GetColor3d("DarkGreen").GetData());
renderWindow->Render();
renderWindowInteractor->Start();
return EXIT_SUCCESS;
}
CMakeLists.txt¶
cmake_minimum_required(VERSION 3.3 FATAL_ERROR)
project(Vertex)
find_package(VTK COMPONENTS
vtkCommonColor
vtkCommonCore
vtkCommonDataModel
vtkInteractionStyle
vtkRenderingContextOpenGL2
vtkRenderingCore
vtkRenderingFreeType
vtkRenderingGL2PSOpenGL2
vtkRenderingOpenGL2
QUIET
)
if (NOT VTK_FOUND)
message("Skipping Vertex: ${VTK_NOT_FOUND_MESSAGE}")
return ()
endif()
message (STATUS "VTK_VERSION: ${VTK_VERSION}")
if (VTK_VERSION VERSION_LESS "8.90.0")
# old system
include(${VTK_USE_FILE})
add_executable(Vertex MACOSX_BUNDLE Vertex.cxx )
target_link_libraries(Vertex PRIVATE ${VTK_LIBRARIES})
else ()
# include all components
add_executable(Vertex MACOSX_BUNDLE Vertex.cxx )
target_link_libraries(Vertex PRIVATE ${VTK_LIBRARIES})
# vtk_module_autoinit is needed
vtk_module_autoinit(
TARGETS Vertex
MODULES ${VTK_LIBRARIES}
)
endif ()
Download and Build Vertex¶
Click here to download Vertex and its CMakeLists.txt file. Once the tarball Vertex.tar has been downloaded and extracted,
cd Vertex/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:
./Vertex
WINDOWS USERS
Be sure to add the VTK bin directory to your path. This will resolve the VTK dll's at run time.