# Kitchen

VTKExamples/Cxx/Visualization/Kitchen

### Description

The example shows forty streamlines in a small kitchen. The room has two windows, a door(with air leakage), and a cooking area with a hot stove. The air leakage and temperature variation combine to produce air convection currents throughout the kitchen. The starting positions of the streamlines were defined by creating a rake, or curve (and its associated points). Here the rake was a straight line modeled with a vtkLineSource. These streamlines clearly show features of the flow field. By releasing many streamlines simultaneously we obtain even more information, as the eye tends to assemble nearby streamlines into a “global” understanding of flow field features.

Info

See Figure 6-18 in Chapter 6 the VTK Textbook.

Other Languages

See (Python)

### Code

Kitchen.cxx

    #include <vtkActor.h>
    #include <vtkCamera.h>
    #include <vtkLineSource.h>
    #include <vtkNamedColors.h>
    #include <vtkPointData.h>
    #include <vtkPolyDataMapper.h>
    #include <vtkProperty.h>
    #include <vtkRenderWindow.h>
    #include <vtkRenderWindowInteractor.h>
    #include <vtkRenderer.h>
    #include <vtkStreamTracer.h>
    #include <vtkStructuredGrid.h>
    #include <vtkStructuredGridGeometryFilter.h>
    #include <vtkStructuredGridOutlineFilter.h>
    #include <vtkStructuredGridReader.h>

    #include <array>

    int main( int argc, char *argv[] )
    {
      if (argc < 2)
      {
        std::cout << "Usage: " << argv[0] << " kitchen.vtk" << std::endl;
        return EXIT_FAILURE;
      }
      double range[2];
      double maxVelocity = 0.0, maxTime = 0.0;

      vtkSmartPointer<vtkNamedColors> colors =
        vtkSmartPointer<vtkNamedColors>::New();

      // Set the furniture colors.
      std::array<unsigned char , 4> furnColor{{204, 204, 153, 255}};
        colors->SetColor("Furniture", furnColor.data());

      vtkSmartPointer<vtkRenderer> aren =
        vtkSmartPointer<vtkRenderer>::New();
      vtkSmartPointer<vtkRenderWindow> renWin =
        vtkSmartPointer<vtkRenderWindow>::New();
      renWin->AddRenderer(aren);

      vtkSmartPointer<vtkRenderWindowInteractor> iren =
        vtkSmartPointer<vtkRenderWindowInteractor>::New();
      iren->SetRenderWindow(renWin);
    //
    // Read data
    //
      vtkSmartPointer<vtkStructuredGridReader> reader =
        vtkSmartPointer<vtkStructuredGridReader>::New();
      reader->SetFileName(argv[1]);
      reader->Update(); //force a read to occur
      reader->GetOutput()->GetLength();

      if ( reader->GetOutput()->GetPointData()->GetScalars() )
      {
        reader->GetOutput()->GetPointData()->GetScalars()->GetRange(range);
      }
      if ( reader->GetOutput()->GetPointData()->GetVectors() )
      {
        maxVelocity = reader->GetOutput()->GetPointData()->GetVectors()->GetMaxNorm();
        maxTime = 4.0*reader->GetOutput()->GetLength()/maxVelocity ;
      }
    //
    // Outline around data
    //
      vtkSmartPointer<vtkStructuredGridOutlineFilter> outlineF =
        vtkSmartPointer<vtkStructuredGridOutlineFilter>::New();
      outlineF->SetInputConnection(reader->GetOutputPort());
      vtkSmartPointer<vtkPolyDataMapper> outlineMapper =
        vtkSmartPointer<vtkPolyDataMapper>::New();
      outlineMapper->SetInputConnection(outlineF->GetOutputPort());
      vtkSmartPointer<vtkActor> outline =
        vtkSmartPointer<vtkActor>::New();
      outline->SetMapper(outlineMapper);
      outline->GetProperty()->SetColor(colors->GetColor3d("LampBlack").GetData());
    //
    // Set up shaded surfaces (i.e., supporting geometry)
    //
      vtkSmartPointer<vtkStructuredGridGeometryFilter> doorGeom =
        vtkSmartPointer<vtkStructuredGridGeometryFilter>::New();
      doorGeom->SetInputConnection(reader->GetOutputPort());
      doorGeom->SetExtent(27,27,14,18,0,11);
      vtkSmartPointer<vtkPolyDataMapper> mapDoor =
        vtkSmartPointer<vtkPolyDataMapper>::New();
      mapDoor->SetInputConnection(doorGeom->GetOutputPort());
      mapDoor->ScalarVisibilityOff();
      vtkSmartPointer<vtkActor> door =
        vtkSmartPointer<vtkActor>::New();
      door->SetMapper(mapDoor);
      door->GetProperty()->SetColor(colors->GetColor3d("Burlywood").GetData());

      vtkSmartPointer<vtkStructuredGridGeometryFilter> window1Geom =
        vtkSmartPointer<vtkStructuredGridGeometryFilter>::New();
      window1Geom->SetInputConnection(reader->GetOutputPort());
      window1Geom->SetExtent(0,0,9,18,6,12);
      vtkSmartPointer<vtkPolyDataMapper> mapWindow1 =
        vtkSmartPointer<vtkPolyDataMapper>::New();
      mapWindow1->SetInputConnection(window1Geom->GetOutputPort());
      mapWindow1->ScalarVisibilityOff();
      vtkSmartPointer<vtkActor> window1 =
        vtkSmartPointer<vtkActor>::New();
      window1->SetMapper(mapWindow1);
      window1->GetProperty()->SetColor(colors->GetColor3d("SkyBlue").GetData());
      window1->GetProperty()->SetOpacity(.6);

      vtkSmartPointer<vtkStructuredGridGeometryFilter> window2Geom =
        vtkSmartPointer<vtkStructuredGridGeometryFilter>::New();
      window2Geom->SetInputConnection(reader->GetOutputPort());
      window2Geom->SetExtent(5,12,23,23,6,12);
      vtkSmartPointer<vtkPolyDataMapper> mapWindow2 =
        vtkSmartPointer<vtkPolyDataMapper>::New();
      mapWindow2->SetInputConnection(window2Geom->GetOutputPort());
      mapWindow2->ScalarVisibilityOff();
      vtkSmartPointer<vtkActor> window2 =
        vtkSmartPointer<vtkActor>::New();
      window2->SetMapper(mapWindow2);
      window2->GetProperty()->SetColor(colors->GetColor3d("SkyBlue").GetData());
      window2->GetProperty()->SetOpacity(.6);

      vtkSmartPointer<vtkStructuredGridGeometryFilter> klower1Geom =
        vtkSmartPointer<vtkStructuredGridGeometryFilter>::New();
      klower1Geom->SetInputConnection(reader->GetOutputPort());
      klower1Geom->SetExtent(17,17,0,11,0,6);
      vtkSmartPointer<vtkPolyDataMapper> mapKlower1 =
        vtkSmartPointer<vtkPolyDataMapper>::New();
      mapKlower1->SetInputConnection(klower1Geom->GetOutputPort());
      mapKlower1->ScalarVisibilityOff();
      vtkSmartPointer<vtkActor> klower1 =
        vtkSmartPointer<vtkActor>::New();
      klower1->SetMapper(mapKlower1);
      klower1->GetProperty()->SetColor(colors->GetColor3d("EggShell").GetData());

      vtkSmartPointer<vtkStructuredGridGeometryFilter> klower2Geom =
        vtkSmartPointer<vtkStructuredGridGeometryFilter>::New();
      klower2Geom->SetInputConnection(reader->GetOutputPort());
      klower2Geom->SetExtent(19,19,0,11,0,6);
      vtkSmartPointer<vtkPolyDataMapper> mapKlower2 =
        vtkSmartPointer<vtkPolyDataMapper>::New();
      mapKlower2->SetInputConnection(klower2Geom->GetOutputPort());
      mapKlower2->ScalarVisibilityOff();
      vtkSmartPointer<vtkActor> klower2 =
        vtkSmartPointer<vtkActor>::New();
      klower2->SetMapper(mapKlower2);
      klower2->GetProperty()->SetColor(colors->GetColor3d("EggShell").GetData());

      vtkSmartPointer<vtkStructuredGridGeometryFilter> klower3Geom =
        vtkSmartPointer<vtkStructuredGridGeometryFilter>::New();
      klower3Geom->SetInputConnection(reader->GetOutputPort());
      klower3Geom->SetExtent(17,19,0,0,0,6);
      vtkSmartPointer<vtkPolyDataMapper> mapKlower3 =
        vtkSmartPointer<vtkPolyDataMapper>::New();
      mapKlower3->SetInputConnection(klower3Geom->GetOutputPort());
      mapKlower3->ScalarVisibilityOff();
      vtkSmartPointer<vtkActor> klower3 =
        vtkSmartPointer<vtkActor>::New();
      klower3->SetMapper(mapKlower3);
      klower3->GetProperty()->SetColor(colors->GetColor3d("EggShell").GetData());

      vtkSmartPointer<vtkStructuredGridGeometryFilter> klower4Geom =
        vtkSmartPointer<vtkStructuredGridGeometryFilter>::New();
      klower4Geom->SetInputConnection(reader->GetOutputPort());
      klower4Geom->SetExtent(17,19,11,11,0,6);
      vtkSmartPointer<vtkPolyDataMapper> mapKlower4 =
        vtkSmartPointer<vtkPolyDataMapper>::New();
      mapKlower4->SetInputConnection(klower4Geom->GetOutputPort());
      mapKlower4->ScalarVisibilityOff();
      vtkSmartPointer<vtkActor> klower4 =
        vtkSmartPointer<vtkActor>::New();
      klower4->SetMapper(mapKlower4);
      klower4->GetProperty()->SetColor(colors->GetColor3d("EggShell").GetData());

      vtkSmartPointer<vtkStructuredGridGeometryFilter> klower5Geom =
        vtkSmartPointer<vtkStructuredGridGeometryFilter>::New();
      klower5Geom->SetInputConnection(reader->GetOutputPort());
      klower5Geom->SetExtent(17,19,0,11,0,0);
      vtkSmartPointer<vtkPolyDataMapper> mapKlower5 =
        vtkSmartPointer<vtkPolyDataMapper>::New();
      mapKlower5->SetInputConnection(klower5Geom->GetOutputPort());
      mapKlower5->ScalarVisibilityOff();
      vtkSmartPointer<vtkActor> klower5 =
        vtkSmartPointer<vtkActor>::New();
      klower5->SetMapper(mapKlower5);
      klower5->GetProperty()->SetColor(colors->GetColor3d("EggShell").GetData());

      vtkSmartPointer<vtkStructuredGridGeometryFilter> klower6Geom =
        vtkSmartPointer<vtkStructuredGridGeometryFilter>::New();
      klower6Geom->SetInputConnection(reader->GetOutputPort());
      klower6Geom->SetExtent(17,19,0,7,6,6);
      vtkSmartPointer<vtkPolyDataMapper> mapKlower6 =
        vtkSmartPointer<vtkPolyDataMapper>::New();
      mapKlower6->SetInputConnection(klower6Geom->GetOutputPort());
      mapKlower6->ScalarVisibilityOff();
      vtkSmartPointer<vtkActor> klower6 =
        vtkSmartPointer<vtkActor>::New();
      klower6->SetMapper(mapKlower6);
      klower6->GetProperty()->SetColor(colors->GetColor3d("EggShell").GetData());

      vtkSmartPointer<vtkStructuredGridGeometryFilter> klower7Geom =
        vtkSmartPointer<vtkStructuredGridGeometryFilter>::New();
      klower7Geom->SetInputConnection(reader->GetOutputPort());
      klower7Geom->SetExtent(17,19,9,11,6,6);
      vtkSmartPointer<vtkPolyDataMapper> mapKlower7 =
        vtkSmartPointer<vtkPolyDataMapper>::New();
      mapKlower7->SetInputConnection(klower7Geom->GetOutputPort());
      mapKlower7->ScalarVisibilityOff();
      vtkSmartPointer<vtkActor> klower7 =
        vtkSmartPointer<vtkActor>::New();
      klower7->SetMapper(mapKlower7);
      klower7->GetProperty()->SetColor(colors->GetColor3d("EggShell").GetData());

      vtkSmartPointer<vtkStructuredGridGeometryFilter> hood1Geom =
        vtkSmartPointer<vtkStructuredGridGeometryFilter>::New();
      hood1Geom->SetInputConnection(reader->GetOutputPort());
      hood1Geom->SetExtent(17,17,0,11,11,16);
      vtkSmartPointer<vtkPolyDataMapper> mapHood1 =
        vtkSmartPointer<vtkPolyDataMapper>::New();
      mapHood1->SetInputConnection(hood1Geom->GetOutputPort());
      mapHood1->ScalarVisibilityOff();
      vtkSmartPointer<vtkActor> hood1 =
        vtkSmartPointer<vtkActor>::New();
      hood1->SetMapper(mapHood1);
      hood1->GetProperty()->SetColor(colors->GetColor3d("Silver").GetData());

      vtkSmartPointer<vtkStructuredGridGeometryFilter> hood2Geom =
        vtkSmartPointer<vtkStructuredGridGeometryFilter>::New();
      hood2Geom->SetInputConnection(reader->GetOutputPort());
      hood2Geom->SetExtent(19,19,0,11,11,16);
      vtkSmartPointer<vtkPolyDataMapper> mapHood2 =
        vtkSmartPointer<vtkPolyDataMapper>::New();
      mapHood2->SetInputConnection(hood2Geom->GetOutputPort());
      mapHood2->ScalarVisibilityOff();
      vtkSmartPointer<vtkActor> hood2 =
        vtkSmartPointer<vtkActor>::New();
      hood2->SetMapper(mapHood2);
      hood2->GetProperty()->SetColor(colors->GetColor3d("Furniture").GetData());

      vtkSmartPointer<vtkStructuredGridGeometryFilter> hood3Geom =
        vtkSmartPointer<vtkStructuredGridGeometryFilter>::New();
      hood3Geom->SetInputConnection(reader->GetOutputPort());
      hood3Geom->SetExtent(17,19,0,0,11,16);
      vtkSmartPointer<vtkPolyDataMapper> mapHood3 =
        vtkSmartPointer<vtkPolyDataMapper>::New();
      mapHood3->SetInputConnection(hood3Geom->GetOutputPort());
      mapHood3->ScalarVisibilityOff();
      vtkSmartPointer<vtkActor> hood3 =
        vtkSmartPointer<vtkActor>::New();
      hood3->SetMapper(mapHood3);
      hood3->GetProperty()->SetColor(colors->GetColor3d("Furniture").GetData());

      vtkSmartPointer<vtkStructuredGridGeometryFilter> hood4Geom =
        vtkSmartPointer<vtkStructuredGridGeometryFilter>::New();
      hood4Geom->SetInputConnection(reader->GetOutputPort());
      hood4Geom->SetExtent(17,19,11,11,11,16);
      vtkSmartPointer<vtkPolyDataMapper> mapHood4 =
        vtkSmartPointer<vtkPolyDataMapper>::New();
      mapHood4->SetInputConnection(hood4Geom->GetOutputPort());
      mapHood4->ScalarVisibilityOff();
      vtkSmartPointer<vtkActor> hood4 =
        vtkSmartPointer<vtkActor>::New();
      hood4->SetMapper(mapHood4);
      hood4->GetProperty()->SetColor(colors->GetColor3d("Furniture").GetData());

      vtkSmartPointer<vtkStructuredGridGeometryFilter> hood6Geom =
        vtkSmartPointer<vtkStructuredGridGeometryFilter>::New();
      hood6Geom->SetInputConnection(reader->GetOutputPort());
      hood6Geom->SetExtent(17,19,0,11,16,16);
      vtkSmartPointer<vtkPolyDataMapper> mapHood6 =
        vtkSmartPointer<vtkPolyDataMapper>::New();
      mapHood6->SetInputConnection(hood6Geom->GetOutputPort());
      mapHood6->ScalarVisibilityOff();
      vtkSmartPointer<vtkActor> hood6 =
        vtkSmartPointer<vtkActor>::New();
      hood6->SetMapper(mapHood6);
      hood6->GetProperty()->SetColor(colors->GetColor3d("Furniture").GetData());

      vtkSmartPointer<vtkStructuredGridGeometryFilter> cookingPlateGeom =
        vtkSmartPointer<vtkStructuredGridGeometryFilter>::New();
      cookingPlateGeom->SetInputConnection(reader->GetOutputPort());
      cookingPlateGeom->SetExtent(17,19,7,9,6,6);
      vtkSmartPointer<vtkPolyDataMapper> mapCookingPlate =
        vtkSmartPointer<vtkPolyDataMapper>::New();
      mapCookingPlate->SetInputConnection(cookingPlateGeom->GetOutputPort());
      mapCookingPlate->ScalarVisibilityOff();
      vtkSmartPointer<vtkActor> cookingPlate =
        vtkSmartPointer<vtkActor>::New();
      cookingPlate->SetMapper(mapCookingPlate);
      cookingPlate->GetProperty()->SetColor(colors->GetColor3d("Tomato").GetData());

      vtkSmartPointer<vtkStructuredGridGeometryFilter> filterGeom =
        vtkSmartPointer<vtkStructuredGridGeometryFilter>::New();
      filterGeom->SetInputConnection(reader->GetOutputPort());
      filterGeom->SetExtent(17,19,7,9,11,11);
      vtkSmartPointer<vtkPolyDataMapper> mapFilter =
        vtkSmartPointer<vtkPolyDataMapper>::New();
      mapFilter->SetInputConnection(filterGeom->GetOutputPort());
      mapFilter->ScalarVisibilityOff();
      vtkSmartPointer<vtkActor> filter =
        vtkSmartPointer<vtkActor>::New();
      filter->SetMapper(mapFilter);
      filter->GetProperty()->SetColor(colors->GetColor3d("Furniture").GetData());
    //
    // regular streamlines
    //
      vtkSmartPointer<vtkLineSource> line =
        vtkSmartPointer<vtkLineSource>::New();
      line->SetResolution(39);
      line->SetPoint1(0.08, 2.50, 0.71);
      line->SetPoint2(0.08, 4.50, 0.71);
      vtkSmartPointer<vtkPolyDataMapper> rakeMapper =
        vtkSmartPointer<vtkPolyDataMapper>::New();
      rakeMapper->SetInputConnection(line->GetOutputPort());
      vtkSmartPointer<vtkActor> rake =
        vtkSmartPointer<vtkActor>::New();
      rake->SetMapper(rakeMapper);

      vtkSmartPointer<vtkStreamTracer> streamers =
        vtkSmartPointer<vtkStreamTracer>::New();
      //streamers->DebugOn();
      streamers->SetInputConnection(reader->GetOutputPort());
      streamers->SetSourceConnection(line->GetOutputPort());
      streamers->SetMaximumPropagation(maxTime);
      streamers->SetInitialIntegrationStep(.5);
      streamers->SetMinimumIntegrationStep(.1);
      streamers->SetIntegratorType(2);
      streamers->Update();

      vtkSmartPointer<vtkPolyDataMapper> streamersMapper =
        vtkSmartPointer<vtkPolyDataMapper>::New();
      streamersMapper->SetInputConnection(streamers->GetOutputPort());
      streamersMapper->SetScalarRange(range);

      vtkSmartPointer<vtkActor> lines =
        vtkSmartPointer<vtkActor>::New();
      lines->SetMapper(streamersMapper);
      lines->GetProperty()->SetColor(colors->GetColor3d("Black").GetData());

      aren->TwoSidedLightingOn();

      aren->AddActor(outline);
      aren->AddActor(door);
      aren->AddActor(window1);
      aren->AddActor(window2);
      aren->AddActor(klower1);
      aren->AddActor(klower2);
      aren->AddActor(klower3);
      aren->AddActor(klower4);
      aren->AddActor(klower5);
      aren->AddActor(klower6);
      aren->AddActor(klower7);
      aren->AddActor(hood1);
      aren->AddActor(hood2);
      aren->AddActor(hood3);
      aren->AddActor(hood4);
      aren->AddActor(hood6);
      aren->AddActor(cookingPlate);
      aren->AddActor(filter);
      aren->AddActor(lines);
      aren->AddActor(rake);

      aren->SetBackground(colors->GetColor3d("SlateGray").GetData());

      vtkSmartPointer<vtkCamera> aCamera =
        vtkSmartPointer<vtkCamera>::New();
      aren->SetActiveCamera(aCamera);
      aren->ResetCamera();

      aCamera->SetFocalPoint(3.505, 2.505, 1.255);
      aCamera->SetPosition(3.505, 24.6196, 1.255);
      aCamera->SetViewUp(0,0,1);
      aCamera->Azimuth(60);
      aCamera->Elevation(30);
      aCamera->Dolly(1.5);
      aren->ResetCameraClippingRange();

      renWin->SetSize(640, 512);
      renWin->Render();

      // interact with data
      iren->Start();

      return EXIT_SUCCESS;
    }

### CMakeLists.txt

    cmake_minimum_required(VERSION 3.3 FATAL_ERROR)

    project(Kitchen)

    find_package(VTK COMPONENTS
      vtkCommonColor
      vtkCommonDataModel
      vtkFiltersCore
      vtkFiltersFlowPaths
      vtkFiltersGeometry
      vtkFiltersSources
      vtkIOLegacy
      vtkInteractionStyle
      vtkRenderingCore
      vtkRenderingFreeType
      vtkRenderingOpenGL2 QUIET)
    if (NOT VTK_FOUND)
      message("Skipping Kitchen: ${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(Kitchen MACOSX_BUNDLE Kitchen.cxx )
      target_link_libraries(Kitchen PRIVATE ${VTK_LIBRARIES})
    else ()
      # include all components
      add_executable(Kitchen MACOSX_BUNDLE Kitchen.cxx )
      target_link_libraries(Kitchen PRIVATE ${VTK_LIBRARIES})
      # vtk_module_autoinit is needed
      vtk_module_autoinit(
        TARGETS Kitchen
        MODULES ${VTK_LIBRARIES}
        )
    endif ()

### Download and Build Kitchen

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

    cd Kitchen/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:

    ./Kitchen

WINDOWS USERS

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