TriangleSolidColor
VTKExamples/Cxx/PolyData/TriangleSolidColor
Code¶
TriangleSolidColor.cxx
#include <vtkVersion.h> #include <vtkSmartPointer.h> #include <vtkPoints.h> #include <vtkXMLPolyDataWriter.h> #include <vtkPolyData.h> #include <vtkCellData.h> #include <vtkCellArray.h> #include <vtkTriangle.h> #include <vtkUnsignedCharArray.h> #include <vtkPolyDataMapper.h> #include <vtkActor.h> #include <vtkRenderWindow.h> #include <vtkRenderer.h> #include <vtkRenderWindowInteractor.h> // For compatibility with new VTK generic data arrays #ifdef vtkGenericDataArray_h #define InsertNextTupleValue InsertNextTypedTuple #endif int main(int, char *[]) { // Setup points vtkSmartPointer<vtkPoints> points = vtkSmartPointer<vtkPoints>::New(); vtkSmartPointer<vtkCellArray> vertices = vtkSmartPointer<vtkCellArray>::New(); points->InsertNextPoint(0.0, 0.0, 0.0); points->InsertNextPoint(1.0, 0.0, 0.0); points->InsertNextPoint(0.0, 1.0, 0.0); // Setup colors unsigned char red[3] = {255, 0, 0}; vtkSmartPointer<vtkUnsignedCharArray> colors = vtkSmartPointer<vtkUnsignedCharArray>::New(); colors->SetNumberOfComponents(3); colors->SetName("Colors"); colors->InsertNextTupleValue(red); vtkSmartPointer<vtkCellArray> triangles = vtkSmartPointer<vtkCellArray>::New(); vtkSmartPointer<vtkTriangle> triangle = vtkSmartPointer<vtkTriangle>::New(); triangle->GetPointIds()->SetId(0, 0); triangle->GetPointIds()->SetId(1, 1); triangle->GetPointIds()->SetId(2, 2); triangles->InsertNextCell(triangle); vtkSmartPointer<vtkPolyData> polydata = vtkSmartPointer<vtkPolyData>::New(); polydata->SetPoints(points); polydata->SetPolys(triangles); polydata->GetCellData()->SetScalars(colors); // Visualize vtkSmartPointer<vtkPolyDataMapper> mapper = vtkSmartPointer<vtkPolyDataMapper>::New(); #if VTK_MAJOR_VERSION <= 5 mapper->SetInputConnection(polydata->GetProducerPort()); #else mapper->SetInputData(polydata); #endif vtkSmartPointer<vtkActor> actor = vtkSmartPointer<vtkActor>::New(); actor->SetMapper(mapper); 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); renderer->ResetCamera(); renderWindow->Render(); renderWindowInteractor->Start(); return EXIT_SUCCESS; }
CMakeLists.txt¶
cmake_minimum_required(VERSION 2.8) PROJECT(TriangleSolidColor) find_package(VTK REQUIRED) include(${VTK_USE_FILE}) add_executable(TriangleSolidColor MACOSX_BUNDLE TriangleSolidColor.cxx) target_link_libraries(TriangleSolidColor ${VTK_LIBRARIES})
Download and Build TriangleSolidColor¶
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 TriangleSolidColor and its CMakeLists.txt file. Once the tarball TriangleSolidColor.tar has been downloaded and extracted,
cd TriangleSolidColor/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:
./TriangleSolidColor
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.