# Create a view>>>view1=CreateRenderView()# Create a second view>>>view2=CreateRenderView()# Check if view2 is the active view>>>view2==GetActiveView()True# Make view1 active>>>SetActiveView(view1)>>>view1==GetActiveView()True
# To get exisiting tabs/layouts>>>layouts=GetLayouts()>>>print(layouts){('ViewLayout1','264'):<paraview.servermanager.ViewLayoutobjectat0x2e5b7d0>}# To get layout corresponding to a particular view>>>print(GetLayout(view))<paraview.servermanager.ViewLayoutobjectat0x2e5b7d0># If view is not specified, active view is used>>>print(GetLayout())<paraview.servermanager.ViewLayoutobjectat0x2e5b7d0># To create a new tab>>>new_layout=servermanager.misc.ViewLayout(registrationGroup="layouts")# To split the cell containing the view, either horizontally or vertically>>>view=GetActiveView()>>>layout=GetLayout(view)>>>locationId=layout.SplitViewVertical(view=view,fraction=0.5)# fraction is optional, if not specified the frame is split evenly.# To assign a view to a particular cell.>>>view2=CreateRenderView()>>>layout.AssignView(locationId,view2)
# 1. Save reference when a view is created>>>view=CreateView("RenderView")# 2. Get reference to the active view.>>>view=GetActiveView()
ビューで使用できるプロパティは、ビューのタイプによって異なります。 help 関数を使用すると、使用可能なプロパティを見つけることができます。
>>> view=CreateRenderView()>>> help(view) Help on RenderView in module paraview.servermanager object:class RenderView(Proxy) | View proxy for a 3D interactive render | view. | | ---------------------------------------------------------------------- | Data descriptors defined here: | | CenterAxesVisibility | Toggle the visibility of the axes showing the center of | rotation in the scene. | | CenterOfRotation | Center of rotation for the interactor. | ...# Once you have a reference to the view, you can then get/set the properties.# Get the current value>>> print(view.CenterAxesVisibility)1# Change the value>>> view.CenterAxesVisibility=0
# Using SetDisplayProperties/GetDisplayProperties to access the display# properties for the active source in the active view.>>>print(GetDisplayProperties("Opacity"))1.0>>>SetDisplayProperties(Opacity=0.5)
# Get display properties object for the active source in the active view.>>>disp=GetDisplayProperties()# You can also save the object returned by Show.>>>disp=Show()# Now, you can directly access the properties.>>>print(disp.Opacity)0.5>>>disp.Opacity=0.75
help メソッドを使用して、表示オブジェクトで使用可能なプロパティを検出できます。
>>> disp=Show()>>> help(disp)>>> help(a)Help on GeometryRepresentation in module paraview.servermanager object:class GeometryRepresentation(SourceProxy) | ParaView`s default representation for showing any type of | dataset in the render view. | | Method resolution order: | GeometryRepresentation | SourceProxy | Proxy | __builtin__.object | | ---------------------------------------------------------------------- | Data descriptors defined here: | | ... | | CenterStickyAxes | Keep the sticky axes centered in the view window. | | ColorArrayName | Set the array name to color by. Set it to empty string | to use solid color. | | ColorAttributeType | ...
通常、ParaView では、3Dシーンを操作することになります。しかし、スライス平面や2D画像のような2Dデータセットを操作する場合もあります。そのような場合、paraview は2Dインタラクションに適したインタラクションオプションのセットを別に提供します。ビューツールバーの 2D または 3D ボタンをクリックすると、デフォルトの3Dインタラクションオプションと2Dインタラクションオプションを切り替えることができます。2Dインタラクションのデフォルトのインタラクションオプションは、以下の通りです。
Modifier
Left Button
Middle Button
Right Button
Pan
Roll
Zoom
⇧
Zoom
Zoom
Zoom To Mouse
CTRL or ⌘
Roll
Pan
Rotate
デフォルトでは、ParaView はデータを読み込む際に2Dか3Dかを判断し、それに応じてインタラクションモードを設定します。この動作は Settings ダイアログの RenderView タブにある DefaultInteractionMode 設定を変更することで行うことができます。デフォルトは "Automatic, based on the first time step" ですが、強制的にインタラクションモードを変更したい場合は、"Always 2D" または "Always 3D" に設定を変更することが可能です。
>>> fromparaview.simpleimport*>>> view=CreateRenderView()# Alternatively, use CreateView.>>> view=CreateView("RenderView")
noindent Show および Hide を使用して、パイプラインモジュールによって生成されたデータをビューで表示または非表示にできます。
>>> source=Sphere()>>> view=CreateRenderView()# Show active source in active view.>>> Show()# Or specify source and view explicitly.>>> Show(source,view)# Hide source in active view.>>> Hide(source)
# Get camera from the active view, if possible.>>>camera=GetActiveCamera()# or, get the camera from a specific render view.>>>camera=view.GetActiveCamera()# Now, you can use methods on camera to move it around the scene.# Divide the camera's distance from the focal point by the given dolly value.# Use a value greater than one to dolly-in toward the focal point, and use a# value less than one to dolly-out away from the focal point.>>>camera.Dolly(10)# Set the roll angle of the camera about the direction of projection.>>>camera.Roll(30)# Rotate the camera about the view up vector centered at the focal point. Note# that the view up vector is whatever was set via SetViewUp, and is not# necessarily perpendicular to the direction of projection. The result is a# horizontal rotation of the camera.>>>camera.Azimuth(30)# Rotate the focal point about the view up vector, using the camera's position# as the center of rotation. Note that the view up vector is whatever was set# via SetViewUp, and is not necessarily perpendicular to the direction of# projection. The result is a horizontal rotation of the scene.>>>camera.Yaw(10)# Rotate the camera about the cross product of the negative of the direction# of projection and the view up vector, using the focal point as the center# of rotation. The result is a vertical rotation of the scene.>>>camera.Elevation(10)# Rotate the focal point about the cross product of the view up vector and the# direction of projection, using the camera's position as the center of# rotation. The result is a vertical rotation of the camera.>>>camera.Pitch(10)
>>> camera.SetFocalPoint(0,0,0)>>> camera.SetPosition(0,0,-10)>>> camera.SetViewUp(0,1,0)>>> camera.SetViewAngle(30)>>> camera.SetParallelProjection(False)# If ParallelProjection is set to True, then you'll need# to specify parallel scalar as well i.e. the height of the viewport in# world-coordinate distances. The default is 1. Note that the `scale'# parameter works as an `inverse scale' where larger numbers produce smaller# images. This method has no effect in perspective projection mode.>>> camera.SetParallelScale(1)
>>> view=GetActiveView()# Set center axis visibility>>> view.CenterAxesVisibility=0# Or you can use this variant to set the property on the active view.>>> SetViewProperties(CenterAxesVisibility=0)# Another way of doing the same>>> SetViewProperties(view,CenterAxesVisibility=0)# Similarly, you can change orientation axes related properties>>> view.OrientationAxesVisibility=0>>> view.OrientationAxesLabelColor=(1,1,1)
>>> displayProperties=GetDisplayProperties(source,view)# Both source and view are optional. If not specified, the active source# and active view will be used.# Now one can change properties on this object>>> displayProperties.Representation="Outline"# Or use the SetDisplayProperties API.>>> SetDisplayProperties(source,view,Representation=Outline)# Here too, source and view are optional and when not specified,# active source and active view will be used.
help 関数を使用すると、表示プロパティオブジェクトで使用可能なプロパティに関する情報をいつでも取得できます。
>>> fromparaview.simpleimport*# Create a data source to probe into.>>> Wavelet()<paraview.servermanager.Wavelet object at 0x1156fd810># We update the source so that when we create PlotOverLine filter# it has input data available to determine good defaults. Otherwise,# we will have to manually set up the defaults.>>> UpdatePipeline()# Now, create the PlotOverLine filter. It will be initialized using# defaults based on the input data.>>> PlotOverLine()<paraview.servermanager.PlotOverLine object at 0x1156fd490># Show the result.>>> Show()<paraview.servermanager.XYChartRepresentation object at 0x1160a6a10># This will automatically create a new Line Chart View if the# the active view is no a Line Chart View since PlotOverLine# filter indicates it as the preferred view. You can also explicitly# create it by using CreateView() function.# Display the result.>>> Render()# Access display properties object.>>> dp=GetDisplayProperties()>>> print(dp.SeriesVisibility)['arc_length', '0', 'RTData', '1']# This is list with key-value pairs where the first item is the name# of the series, then its visibility and so on.# To toggle visibility, change this list e.g.>>> dp.SeriesVisibility=['arc_length','1','RTData','1']# Same is true for other series parameters including series color,# line thickness etc.# For series color, the value consists of 3 values: red, green, and blue# color components.>>> print(dp.SeriesColor)['arc_length', '0', '0', '0', 'RTData', '0.89', '0.1', '0.11']# For series labels, value is the label to use.>>> print(dp.SeriesLabel)['arc_length', 'arc_length', 'RTData', 'RTData']# e.g. to change RTData's legend label, we can do something as follows:>>> dp.SeriesLabel[3]='RTData -- new label'# Access view properties object.>>> view=GetActiveView()# or>>> view=GetViewProperties()# To change titles>>> view.ChartTitle="My Title">>> view.BottomAxisTitle="X Axis">>> view.LeftAxisTitle="Y Axis"
# To create a slice view in use:>>>view=CreateView("MultiSlice")# Use properties on view to set/get the slice offsets.>>>view.XSliceValues=[-10,0,10]>>>print(view.XSliceValues)[-10,0,10]# Similar to XSliceValues, you have YSliceValues and ZSliceValues.>>>view.YSliceValues=[0]>>>view.ZSliceValues=[]
defsetup_data(view):# Iterate over visible data objectsforiinrange(view.GetNumberOfVisibleDataObjects()):# You need to use GetVisibleDataObjectForSetup(i)# in setup_data to access the data object.dataObject=view.GetVisibleDataObjectForSetup(i)# The data object has the same data type and structure# as the data object that sits on the server. You can# query the size of the data, for instance, or do anything# else you can do through the Python wrapping.print('Memory size: {0} kilobytes'.format(dataObject.GetActualMemorySize()))# Clean up from previous calls here. We want to unset# any of the arrays requested in previous calls to this function.view.DisableAllAttributeArrays()# By default, no arrays will be passed to the client.# You need to explicitly request the arrays you want.# Here, we'll request the Density point data arrayview.SetAttributeArrayStatus(i,vtkDataObject.POINT,"Density",1)view.SetAttributeArrayStatus(i,vtkDataObject.POINT,"Momentum",1)# Other attribute arrays can be set similarlyview.SetAttributeArrayStatus(i,vtkDataObject.FIELD,"fieldData",1)
defrender(view,width,height):figure=python_view.matplotlib_figure(width,height)ax=figure.add_subplot(1,1,1)ax.minorticks_on()ax.set_title('Plot title')ax.set_xlabel('X label')ax.set_ylabel('Y label')# Process only the first visible object in the pipeline browserdataObject=view.GetVisibleDataObjectForRendering(0)x=dataObject.GetPointData().GetArray('X')# Convert VTK data array to numpy array for plottingfromparaview.numpy_supportimportvtk_to_numpynp_x=vtk_to_numpy(x)ax.hist(np_x,bins=10)returnpython_view.figure_to_image(figure)
Trigger actions are assigned to the right trigger by default and include grabbing,
picking, probing, interactive clipping, teleportation, and adding points to sources
(such as a polyline source). The current action can be chosen via the XR menu
(see 4.14.3 章).
Adding points to a source --- 右のトリガーを押すと、右のコントローラーの先端に点が配置されます。ポリラインソースなど、アクティブソースが点の配置を許可している場合のみ有効です。
Clear --- This button clears all previously saved camera poses.
Savepose --- This button saves the current pose in the list of saved
camera poses. Up to 6 poses can be saved this way. For each saved pose, a
dedicated button is added to the right of this button.
図 4.31 Environment panel of the XR integrated menu.
ViewUpDirection --- These buttons set which axis points upwards from
the top of the HMD. This is useful when datasets or skyboxes are oriented
differently from the default.
SceneScale --- These buttons change the scaling factor of the scene.
A higher value results in all objects appearing larger.
ShowFloor --- This button allows hiding or showing the floor as a white plane.
DistanceWidget --- This button adds a measuring tool to the scene.
Press the right trigger once to place the starting point where the right
controller is located, then press a second time with the controller at the
desired location to place the second point. Four values are displayed next
to the tool: distance and X, Y, Z difference between both points.
The tips of the line can be grabbed and moved individually after placing them.
Cropping buttons --- The following buttons provide tools to crop data in real time.
Cropping planes can be moved by placing the right controller on them and grabbing
them with the right trigger. More than one plane can be added to the scene.
AddCropPlane --- シーンに切り出し平面を追加するボタンです。
AddThickCrop --- シーンに厚みを持つクロップ面を追加するボタンです。
HideCropPlanes --- This button hides all cropping planes in the scene.
CropThickness --- This horizontal slider sets the thickness of created
thick cropping planes (this parameter does not affect current ones). By default,
the value is set to auto, which adjusts the plane thickness according to the
current scene scale.
SnapCropPlanes --- This button allows to choose whether the cropping
planes should snap to the coordinates axes.
The remoting feature is only available on Windows for the Hololens 2 and requires an additional
package named Microsoft.Holographic.Remoting.OpenXr. With this, ParaView can connect to
another application in the remote device if both applications use the same version
of this package.
Note that the ParaView release uses the same version as the official player application developed
by Microsoft, available in the Microsoft Store, which is the 2.9.2.
If you do have not an application already deployed in the remote device, we recommend downloading the
Holographic Remoting Player application in the Microsoft Store.
First, start the application on the remote device.
After launching this application, it will wait for another application to connect to it via an IP address.
図 4.35 Remote application awaiting connection in the Hololens 2.
You can now start ParaView and do any process on your data that you want. When you are ready to test it in
the Hololens 2, enable the XR Interface plugin. You will need to set different options:
DesiredXRRuntime --- set it to OpenXR because the Microsoft.Holographic.Remoting.OpenXr depends on it.
UseOpenXRRemoting --- enable or disable the remoting support.
Remoteaddress --- set the IP address to connect ParaView and the application in the Hololens 2.
図 4.36 XRInterface panel with OpenXR Remoting options.
After setting these options, you can click on SendToXR. Once the connection is established, you will be able
to see and interact with your dataset.
ボタンを使用します。タブを閉じるには、
ボタンをクリックし、そのタブにレイアウトされたすべてのビューを破棄します。タブ全体を別ウィンドウとしてポップアウトさせるには、タブバーの 
ボタンを使用します。
ボタンを使ってパネルに高度なプロパティを表示するか、検索ボックスを使って名前で検索する必要があるかもしれません。
ボタンを使用すると、表示する列を選択することができます。ボタンをクリックするとポップアップメニューが表示され、表示/非表示の列をチェック/アンチェックすることができます。
ボタンをチェックすると、各セルを形成するポイントIDを見ることができるようになります。
ボタンを使って、ビューに選択された要素のみを表示させます。他のビューで選択すると、この 
