# Kitchen

VTKExamples/Python/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.

Cite

This is inspired by Figure 6-18 in the VTK Book.

Other Languages

See (Cxx)

### Code

Kitchen.py

    #!/usr/bin/env python

    import vtk

    def main():
        fileName = get_program_parameters()

        colors = vtk.vtkNamedColors()

        # Set the furniture colors.
        colors.SetColor("Furniture", [204, 204, 153, 255])

        scalarRange = [0.0, 0.0]
        maxTime = 0

        aren = vtk.vtkRenderer()
        renWin = vtk.vtkRenderWindow()
        renWin.AddRenderer(aren)

        iren = vtk.vtkRenderWindowInteractor()
        iren.SetRenderWindow(renWin)

        #
        # Read the data.
        #
        reader = vtk.vtkStructuredGridReader()
        reader.SetFileName(fileName)
        reader.Update()  # Force a read to occur.
        reader.GetOutput().GetLength()

        if reader.GetOutput().GetPointData().GetScalars():
            reader.GetOutput().GetPointData().GetScalars().GetRange(scalarRange)

        if reader.GetOutput().GetPointData().GetVectors():
            maxVelocity = reader.GetOutput().GetPointData().GetVectors().GetMaxNorm()
            maxTime = 4.0 * reader.GetOutput().GetLength() / maxVelocity

        #
        # Outline around the data.
        #
        outlineF = vtk.vtkStructuredGridOutlineFilter()
        outlineF.SetInputConnection(reader.GetOutputPort())
        outlineMapper = vtk.vtkPolyDataMapper()
        outlineMapper.SetInputConnection(outlineF.GetOutputPort())
        outline = vtk.vtkActor()
        outline.SetMapper(outlineMapper)
        outline.GetProperty().SetColor(colors.GetColor3d("LampBlack"))

        #
        # Set up shaded surfaces (i.e., supporting geometry).
        #
        doorGeom = vtk.vtkStructuredGridGeometryFilter()
        doorGeom.SetInputConnection(reader.GetOutputPort())
        doorGeom.SetExtent(27, 27, 14, 18, 0, 11)
        mapDoor = vtk.vtkPolyDataMapper()
        mapDoor.SetInputConnection(doorGeom.GetOutputPort())
        mapDoor.ScalarVisibilityOff()
        door = vtk.vtkActor()
        door.SetMapper(mapDoor)
        door.GetProperty().SetColor(colors.GetColor3d("Burlywood"))

        window1Geom = vtk.vtkStructuredGridGeometryFilter()
        window1Geom.SetInputConnection(reader.GetOutputPort())
        window1Geom.SetExtent(0, 0, 9, 18, 6, 12)
        mapWindow1 = vtk.vtkPolyDataMapper()
        mapWindow1.SetInputConnection(window1Geom.GetOutputPort())
        mapWindow1.ScalarVisibilityOff()
        window1 = vtk.vtkActor()
        window1.SetMapper(mapWindow1)
        window1.GetProperty().SetColor(colors.GetColor3d("SkyBlue"))
        window1.GetProperty().SetOpacity(.6)

        window2Geom = vtk.vtkStructuredGridGeometryFilter()
        window2Geom.SetInputConnection(reader.GetOutputPort())
        window2Geom.SetExtent(5, 12, 23, 23, 6, 12)
        mapWindow2 = vtk.vtkPolyDataMapper()
        mapWindow2.SetInputConnection(window2Geom.GetOutputPort())
        mapWindow2.ScalarVisibilityOff()
        window2 = vtk.vtkActor()
        window2.SetMapper(mapWindow2)
        window2.GetProperty().SetColor(colors.GetColor3d("SkyBlue"))
        window2.GetProperty().SetOpacity(.6)

        klower1Geom = vtk.vtkStructuredGridGeometryFilter()
        klower1Geom.SetInputConnection(reader.GetOutputPort())
        klower1Geom.SetExtent(17, 17, 0, 11, 0, 6)
        mapKlower1 = vtk.vtkPolyDataMapper()
        mapKlower1.SetInputConnection(klower1Geom.GetOutputPort())
        mapKlower1.ScalarVisibilityOff()
        klower1 = vtk.vtkActor()
        klower1.SetMapper(mapKlower1)
        klower1.GetProperty().SetColor(colors.GetColor3d("EggShell"))

        klower2Geom = vtk.vtkStructuredGridGeometryFilter()
        klower2Geom.SetInputConnection(reader.GetOutputPort())
        klower2Geom.SetExtent(19, 19, 0, 11, 0, 6)
        mapKlower2 = vtk.vtkPolyDataMapper()
        mapKlower2.SetInputConnection(klower2Geom.GetOutputPort())
        mapKlower2.ScalarVisibilityOff()
        klower2 = vtk.vtkActor()
        klower2.SetMapper(mapKlower2)
        klower2.GetProperty().SetColor(colors.GetColor3d("EggShell"))

        klower3Geom = vtk.vtkStructuredGridGeometryFilter()
        klower3Geom.SetInputConnection(reader.GetOutputPort())
        klower3Geom.SetExtent(17, 19, 0, 0, 0, 6)
        mapKlower3 = vtk.vtkPolyDataMapper()
        mapKlower3.SetInputConnection(klower3Geom.GetOutputPort())
        mapKlower3.ScalarVisibilityOff()
        klower3 = vtk.vtkActor()
        klower3.SetMapper(mapKlower3)
        klower3.GetProperty().SetColor(colors.GetColor3d("EggShell"))

        klower4Geom = vtk.vtkStructuredGridGeometryFilter()
        klower4Geom.SetInputConnection(reader.GetOutputPort())
        klower4Geom.SetExtent(17, 19, 11, 11, 0, 6)
        mapKlower4 = vtk.vtkPolyDataMapper()
        mapKlower4.SetInputConnection(klower4Geom.GetOutputPort())
        mapKlower4.ScalarVisibilityOff()
        klower4 = vtk.vtkActor()
        klower4.SetMapper(mapKlower4)
        klower4.GetProperty().SetColor(colors.GetColor3d("EggShell"))

        klower5Geom = vtk.vtkStructuredGridGeometryFilter()
        klower5Geom.SetInputConnection(reader.GetOutputPort())
        klower5Geom.SetExtent(17, 19, 0, 11, 0, 0)
        mapKlower5 = vtk.vtkPolyDataMapper()
        mapKlower5.SetInputConnection(klower5Geom.GetOutputPort())
        mapKlower5.ScalarVisibilityOff()
        klower5 = vtk.vtkActor()
        klower5.SetMapper(mapKlower5)
        klower5.GetProperty().SetColor(colors.GetColor3d("EggShell"))

        klower6Geom = vtk.vtkStructuredGridGeometryFilter()
        klower6Geom.SetInputConnection(reader.GetOutputPort())
        klower6Geom.SetExtent(17, 19, 0, 7, 6, 6)
        mapKlower6 = vtk.vtkPolyDataMapper()
        mapKlower6.SetInputConnection(klower6Geom.GetOutputPort())
        mapKlower6.ScalarVisibilityOff()
        klower6 = vtk.vtkActor()
        klower6.SetMapper(mapKlower6)
        klower6.GetProperty().SetColor(colors.GetColor3d("EggShell"))

        klower7Geom = vtk.vtkStructuredGridGeometryFilter()
        klower7Geom.SetInputConnection(reader.GetOutputPort())
        klower7Geom.SetExtent(17, 19, 9, 11, 6, 6)
        mapKlower7 = vtk.vtkPolyDataMapper()
        mapKlower7.SetInputConnection(klower7Geom.GetOutputPort())
        mapKlower7.ScalarVisibilityOff()
        klower7 = vtk.vtkActor()
        klower7.SetMapper(mapKlower7)
        klower7.GetProperty().SetColor(colors.GetColor3d("EggShell"))

        hood1Geom = vtk.vtkStructuredGridGeometryFilter()
        hood1Geom.SetInputConnection(reader.GetOutputPort())
        hood1Geom.SetExtent(17, 17, 0, 11, 11, 16)
        mapHood1 = vtk.vtkPolyDataMapper()
        mapHood1.SetInputConnection(hood1Geom.GetOutputPort())
        mapHood1.ScalarVisibilityOff()
        hood1 = vtk.vtkActor()
        hood1.SetMapper(mapHood1)
        hood1.GetProperty().SetColor(colors.GetColor3d("Silver"))

        hood2Geom = vtk.vtkStructuredGridGeometryFilter()
        hood2Geom.SetInputConnection(reader.GetOutputPort())
        hood2Geom.SetExtent(19, 19, 0, 11, 11, 16)
        mapHood2 = vtk.vtkPolyDataMapper()
        mapHood2.SetInputConnection(hood2Geom.GetOutputPort())
        mapHood2.ScalarVisibilityOff()
        hood2 = vtk.vtkActor()
        hood2.SetMapper(mapHood2)
        hood2.GetProperty().SetColor(colors.GetColor3d("Furniture"))

        hood3Geom = vtk.vtkStructuredGridGeometryFilter()
        hood3Geom.SetInputConnection(reader.GetOutputPort())
        hood3Geom.SetExtent(17, 19, 0, 0, 11, 16)
        mapHood3 = vtk.vtkPolyDataMapper()
        mapHood3.SetInputConnection(hood3Geom.GetOutputPort())
        mapHood3.ScalarVisibilityOff()
        hood3 = vtk.vtkActor()
        hood3.SetMapper(mapHood3)
        hood3.GetProperty().SetColor(colors.GetColor3d("Furniture"))

        hood4Geom = vtk.vtkStructuredGridGeometryFilter()
        hood4Geom.SetInputConnection(reader.GetOutputPort())
        hood4Geom.SetExtent(17, 19, 11, 11, 11, 16)
        mapHood4 = vtk.vtkPolyDataMapper()
        mapHood4.SetInputConnection(hood4Geom.GetOutputPort())
        mapHood4.ScalarVisibilityOff()
        hood4 = vtk.vtkActor()
        hood4.SetMapper(mapHood4)
        hood4.GetProperty().SetColor(colors.GetColor3d("Furniture"))

        hood6Geom = vtk.vtkStructuredGridGeometryFilter()
        hood6Geom.SetInputConnection(reader.GetOutputPort())
        hood6Geom.SetExtent(17, 19, 0, 11, 16, 16)
        mapHood6 = vtk.vtkPolyDataMapper()
        mapHood6.SetInputConnection(hood6Geom.GetOutputPort())
        mapHood6.ScalarVisibilityOff()
        hood6 = vtk.vtkActor()
        hood6.SetMapper(mapHood6)
        hood6.GetProperty().SetColor(colors.GetColor3d("Furniture"))

        cookingPlateGeom = vtk.vtkStructuredGridGeometryFilter()
        cookingPlateGeom.SetInputConnection(reader.GetOutputPort())
        cookingPlateGeom.SetExtent(17, 19, 7, 9, 6, 6)
        mapCookingPlate = vtk.vtkPolyDataMapper()
        mapCookingPlate.SetInputConnection(cookingPlateGeom.GetOutputPort())
        mapCookingPlate.ScalarVisibilityOff()
        cookingPlate = vtk.vtkActor()
        cookingPlate.SetMapper(mapCookingPlate)
        cookingPlate.GetProperty().SetColor(colors.GetColor3d("Tomato"))

        filterGeom = vtk.vtkStructuredGridGeometryFilter()
        filterGeom.SetInputConnection(reader.GetOutputPort())
        filterGeom.SetExtent(17, 19, 7, 9, 11, 11)
        mapFilter = vtk.vtkPolyDataMapper()
        mapFilter.SetInputConnection(filterGeom.GetOutputPort())
        mapFilter.ScalarVisibilityOff()
        sgfilter = vtk.vtkActor()
        sgfilter.SetMapper(mapFilter)
        sgfilter.GetProperty().SetColor(colors.GetColor3d("Furniture"))
        #
        # regular streamlines
        #
        line = vtk.vtkLineSource()
        line.SetResolution(39)
        line.SetPoint1(0.08, 2.50, 0.71)
        line.SetPoint2(0.08, 4.50, 0.71)
        rakeMapper = vtk.vtkPolyDataMapper()
        rakeMapper.SetInputConnection(line.GetOutputPort())
        rake = vtk.vtkActor()
        rake.SetMapper(rakeMapper)

        streamers = vtk.vtkStreamTracer()
        # streamers.DebugOn()
        streamers.SetInputConnection(reader.GetOutputPort())
        streamers.SetSourceConnection(line.GetOutputPort())
        streamers.SetMaximumPropagation(maxTime)
        streamers.SetInitialIntegrationStep(.5)
        streamers.SetMinimumIntegrationStep(.1)
        streamers.SetIntegratorType(2)
        streamers.Update()

        streamersMapper = vtk.vtkPolyDataMapper()
        streamersMapper.SetInputConnection(streamers.GetOutputPort())
        streamersMapper.SetScalarRange(scalarRange)

        lines = vtk.vtkActor()
        lines.SetMapper(streamersMapper)
        lines.GetProperty().SetColor(colors.GetColor3d("Black"))

        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(sgfilter)
        aren.AddActor(lines)
        aren.AddActor(rake)

        aren.SetBackground(colors.GetColor3d("SlateGray"))

        aCamera = vtk.vtkCamera()
        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()

    def get_program_parameters():
        import argparse
        description = 'Flow velocity computed for a small kitchen (top and side view).'
        epilogue = '''
        Forty streamlines start along the rake positioned under the window.
        Some eventually travel over the hot stove and are convected upwards.
        '''
        parser = argparse.ArgumentParser(description=description, epilog=epilogue,
                                         formatter_class=argparse.RawDescriptionHelpFormatter)
        parser.add_argument('filename', help='kitchen.vtk.')
        args = parser.parse_args()
        return args.filename

    if __name__ == '__main__':
        main()