Quad
VTKExamples/Cxx/GeometricObjects/Quad
Code¶
Quad.cxx
#include <vtkVersion.h> #include <vtkCellArray.h> #include <vtkPoints.h> #include <vtkQuad.h> #include <vtkPolyData.h> #include <vtkSmartPointer.h> #include <vtkPolyDataMapper.h> #include <vtkActor.h> #include <vtkRenderWindow.h> #include <vtkRenderer.h> #include <vtkRenderWindowInteractor.h> int main(int , char *[]) { // 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); // Setup render window, renderer, 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); renderer->AddActor(actor); 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¶
Danger
The generation of tar files has not been ported to the new VTKExamples. Some tarballs may be missing or out-of-date.
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 PLEASE NOTE: Be sure to add the VTK bin directory to your path. This will resolve the VTK dll's at run time.