Quad

VTKExamples/Cxx/GeometricObjects/Quad


Code

Quad.cxx

#include <vtkActor.h>
#include <vtkCellArray.h>
#include <vtkNamedColors.h>
#include <vtkPoints.h>
#include <vtkPolyData.h>
#include <vtkPolyDataMapper.h>
#include <vtkProperty.h>
#include <vtkQuad.h>
#include <vtkRenderer.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkSmartPointer.h>
#include <vtkVersion.h>

int main(int , char *[])
{
  vtkSmartPointer<vtkNamedColors> colors =
    vtkSmartPointer<vtkNamedColors>::New();

  // Create four points (must be in counter clockwise order)
  double p0[3] = {0.0, 0.0, 0.0};
  double p1[3] = {1.0, 0.0, 0.0};
  double p2[3] = {1.0, 1.0, 0.0};
  double p3[3] = {0.0, 1.0, 0.0};

  // Add the points to a vtkPoints object
  vtkSmartPointer<vtkPoints> points =
    vtkSmartPointer<vtkPoints>::New();
  points->InsertNextPoint(p0);
  points->InsertNextPoint(p1);
  points->InsertNextPoint(p2);
  points->InsertNextPoint(p3);

  // Create a quad on the four points
  vtkSmartPointer<vtkQuad> quad =
    vtkSmartPointer<vtkQuad>::New();
  quad->GetPointIds()->SetId(0,0);
  quad->GetPointIds()->SetId(1,1);
  quad->GetPointIds()->SetId(2,2);
  quad->GetPointIds()->SetId(3,3);

  // Create a cell array to store the quad in
  vtkSmartPointer<vtkCellArray> quads =
    vtkSmartPointer<vtkCellArray>::New();
  quads->InsertNextCell(quad);

  // Create a polydata to store everything in
  vtkSmartPointer<vtkPolyData> polydata =
    vtkSmartPointer<vtkPolyData>::New();

  // Add the points and quads to the dataset
  polydata->SetPoints(points);
  polydata->SetPolys(quads);

  // Setup actor and mapper
  vtkSmartPointer<vtkPolyDataMapper> mapper =
    vtkSmartPointer<vtkPolyDataMapper>::New();
#if VTK_MAJOR_VERSION <= 5
  mapper->SetInput(polydata);
#else
  mapper->SetInputData(polydata);
#endif

  vtkSmartPointer<vtkActor> actor =
    vtkSmartPointer<vtkActor>::New();
  actor->SetMapper(mapper);
  actor->GetProperty()->SetColor(
    colors->GetColor3d("Silver").GetData());

  // Setup render window, renderer, and interactor
  vtkSmartPointer<vtkRenderer> renderer =
    vtkSmartPointer<vtkRenderer>::New();
  vtkSmartPointer<vtkRenderWindow> renderWindow =
    vtkSmartPointer<vtkRenderWindow>::New();
  renderWindow->SetWindowName("Quad");
  renderWindow->AddRenderer(renderer);
  vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor = 
    vtkSmartPointer<vtkRenderWindowInteractor>::New();
  renderWindowInteractor->SetRenderWindow(renderWindow);

  renderer->AddActor(actor);
  renderer->SetBackground(colors->GetColor3d("Salmon").GetData());
  renderWindow->Render();
  renderWindowInteractor->Start();

  return EXIT_SUCCESS;
}

CMakeLists.txt

cmake_minimum_required(VERSION 2.8)

PROJECT(Quad)

find_package(VTK REQUIRED)
include(${VTK_USE_FILE})

add_executable(Quad MACOSX_BUNDLE Quad.cxx )

target_link_libraries(Quad ${VTK_LIBRARIES})

Download and Build Quad

Click here to download Quad and its CMakeLists.txt file. Once the tarball Quad.tar has been downloaded and extracted,

cd Quad/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:

./Quad

WINDOWS USERS

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