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]f(f.zuDf(fHO1H9tH@1111111SafeDownCastvtkObjectBasevtkWidgetRepresentationIsTypeOfGetNeedToRenderMinValueGetPlaceFactorMinValueGetNeedToRenderMaxValueGetHandleSizeMinValueGetPlaceFactorMaxValueGetHandleSizeMaxValueBuildRepresentationGetBoundsGetHandleSizeGetPlaceFactorGetNeedToRenderGetInteractionStateGetPickingManagedHighlightGetActorsvtkPropCollectionReleaseGraphicsResourcesvtkWindowGetActors2DGetVolumesvtkViewportRenderVolumetricGeometryRenderOpaqueGeometryRenderOverlayNeedToRenderOffPickingManagedOnNeedToRenderOnSetPickingManagedPickingManagedOffSetNeedToRenderSetHandleSizeSetPlaceFactorStartWidgetInteractionEndWidgetInteractionWidgetInteractionComplexInteractionvtkRenderWindowInteractorvtkAbstractWidgetEndComplexInteractionStartComplexInteractionIsANewInstancePlaceWidgetShallowCopyComputeInteractionStateGetRendererSetRenderervtkRenderervtkPropvtkObjectUH=Hu]ÐHH=tHH=tH]HHPH;u!uƇHHPH;u!tƇ1HHH;u!tLJHHH;u)tLJ1HasTranslucentPolygonalGeometryRenderTranslucentPolygonalGeometryvtkWidgetRepresentation - abstract class defines interface between the widget and widget representation classes Superclass: vtkProp This class is used to define the API for, and partially implement, a representation for different types of widgets. Note that the widget representation (i.e., subclasses of vtkWidgetRepresentation) are a type of vtkProp; meaning that they can be associated with a vtkRenderer end embedded in a scene like any other vtkActor. However, vtkWidgetRepresentation also defines an API that enables it to be paired with a subclass vtkAbstractWidget, meaning that it can be driven by a widget, serving to represent the widget as the widget responds to registered events. The API defined here should be regarded as a guideline for implementing widgets and widget representations. Widget behavior is complex, as is the way the representation responds to the registered widget events, so the API may vary from widget to widget to reflect this complexity. @warning The separation of the widget event handling and representation enables users and developers to create new appearances for the widget. It also facilitates parallel processing, where the client application handles events, and remote representations of the widget are slaves to the client (and do not handle events). ComputeComplexInteractionStatevtkInteractionWidgetsPython.vtkWidgetRepresentationV.IsTypeOf(string) -> int C++: static vtkTypeBool IsTypeOf(const char *type) Standard methods for instances of this class. V.IsA(string) -> int C++: vtkTypeBool IsA(const char *type) override; Standard methods for instances of this class. V.SafeDownCast(vtkObjectBase) -> vtkWidgetRepresentation C++: static vtkWidgetRepresentation *SafeDownCast( vtkObjectBase *o) Standard methods for instances of this class. V.NewInstance() -> vtkWidgetRepresentation C++: vtkWidgetRepresentation *NewInstance() Standard methods for instances of this class. V.PickingManagedOn() C++: virtual void PickingManagedOn() Enable/Disable the use of a manager to process the picking. Enabled by default. V.PickingManagedOff() C++: virtual void PickingManagedOff() Enable/Disable the use of a manager to process the picking. Enabled by default. V.SetPickingManaged(bool) C++: virtual void SetPickingManaged(bool _arg) Enable/Disable the use of a manager to process the picking. Enabled by default. V.GetPickingManaged() -> bool C++: virtual bool GetPickingManaged() Enable/Disable the use of a manager to process the picking. Enabled by default. V.SetRenderer(vtkRenderer) C++: virtual void SetRenderer(vtkRenderer *ren) Subclasses of vtkWidgetRepresentation must implement these methods. This is considered the minimum API for a widget representation. SetRenderer() - the renderer in which the representations draws itself. Typically the renderer is set by the associated widget. Use the widget's SetCurrentRenderer() method in most cases; otherwise there is a risk of inconsistent behavior as events and drawing may be performed in different viewports. BuildRepresentation() - update the geometry of the widget based on its current state. WARNING: The renderer is NOT reference counted by the representation, in order to avoid reference loops. Be sure that the representation lifetime does not extend beyond the renderer lifetime. V.GetRenderer() -> vtkRenderer C++: virtual vtkRenderer *GetRenderer() Subclasses of vtkWidgetRepresentation must implement these methods. This is considered the minimum API for a widget representation. SetRenderer() - the renderer in which the representations draws itself. Typically the renderer is set by the associated widget. Use the widget's SetCurrentRenderer() method in most cases; otherwise there is a risk of inconsistent behavior as events and drawing may be performed in different viewports. BuildRepresentation() - update the geometry of the widget based on its current state. WARNING: The renderer is NOT reference counted by the representation, in order to avoid reference loops. Be sure that the representation lifetime does not extend beyond the renderer lifetime. V.BuildRepresentation() C++: virtual void BuildRepresentation() Subclasses of vtkWidgetRepresentation must implement these methods. This is considered the minimum API for a widget representation. SetRenderer() - the renderer in which the representations draws itself. Typically the renderer is set by the associated widget. Use the widget's SetCurrentRenderer() method in most cases; otherwise there is a risk of inconsistent behavior as events and drawing may be performed in different viewports. BuildRepresentation() - update the geometry of the widget based on its current state. WARNING: The renderer is NOT reference counted by the representation, in order to avoid reference loops. Be sure that the representation lifetime does not extend beyond the renderer lifetime. V.PlaceWidget([float, ...]) C++: virtual void PlaceWidget(double *bounds) The following is a suggested API for widget representations. These methods define the communication between the widget and its representation. These methods are only suggestions because widgets take on so many different forms that a universal API is not deemed practical. However, these methods should be implemented when possible to insure that the VTK widget hierarchy remains self-consistent. PlaceWidget() - given a bounding box (xmin,xmax,ymin,ymax,zmin,zmax), place the widget inside of it. The current orientation of the widget is preserved, only scaling and translation is performed. StartWidgetInteraction() - generally corresponds to a initial event (e.g., mouse down) that starts the interaction process with the widget. WidgetInteraction() - invoked when an event causes the widget to change appearance. EndWidgetInteraction() - generally corresponds to a final event (e.g., mouse up) and completes the interaction sequence. ComputeInteractionState() - given (X,Y) display coordinates in a renderer, with a possible flag that modifies the computation, what is the state of the widget? GetInteractionState() - return the current state of the widget. Note that the value of "0" typically refers to "outside". The interaction state is strictly a function of the representation, and the widget/represent must agree on what they mean. Highlight() - turn on or off any highlights associated with the widget. Highlights are generally turned on when the widget is selected. Note that subclasses may ignore some of these methods and implement their own depending on the specifics of the widget. V.StartWidgetInteraction([float, float]) C++: virtual void StartWidgetInteraction(double eventPos[2]) V.WidgetInteraction([float, float]) C++: virtual void WidgetInteraction(double newEventPos[2]) V.EndWidgetInteraction([float, float]) C++: virtual void EndWidgetInteraction(double newEventPos[2]) V.ComputeInteractionState(int, int, int) -> int C++: virtual int ComputeInteractionState(int X, int Y, int modify=0) V.GetInteractionState() -> int C++: virtual int GetInteractionState() V.Highlight(int) C++: virtual void Highlight(int highlightOn) V.StartComplexInteraction(vtkRenderWindowInteractor, vtkAbstractWidget, int, void) C++: virtual void StartComplexInteraction( vtkRenderWindowInteractor *, vtkAbstractWidget *, unsigned long, void *) V.ComplexInteraction(vtkRenderWindowInteractor, vtkAbstractWidget, int, void) C++: virtual void ComplexInteraction(vtkRenderWindowInteractor *, vtkAbstractWidget *, unsigned long, void *) V.EndComplexInteraction(vtkRenderWindowInteractor, vtkAbstractWidget, int, void) C++: virtual void EndComplexInteraction( vtkRenderWindowInteractor *, vtkAbstractWidget *, unsigned long, void *) V.ComputeComplexInteractionState(vtkRenderWindowInteractor, vtkAbstractWidget, int, void, int) -> int C++: virtual int ComputeComplexInteractionState( vtkRenderWindowInteractor *iren, vtkAbstractWidget *widget, unsigned long event, void *callData, int modify=0) V.SetPlaceFactor(float) C++: virtual void SetPlaceFactor(double _arg) Set/Get a factor representing the scaling of the widget upon placement (via the PlaceWidget() method). Normally the widget is placed so that it just fits within the bounding box defined in PlaceWidget(bounds). The PlaceFactor will make the widget larger (PlaceFactor > 1) or smaller (PlaceFactor < 1). By default, PlaceFactor is set to 0.5. V.GetPlaceFactorMinValue() -> float C++: virtual double GetPlaceFactorMinValue() Set/Get a factor representing the scaling of the widget upon placement (via the PlaceWidget() method). Normally the widget is placed so that it just fits within the bounding box defined in PlaceWidget(bounds). The PlaceFactor will make the widget larger (PlaceFactor > 1) or smaller (PlaceFactor < 1). By default, PlaceFactor is set to 0.5. V.GetPlaceFactorMaxValue() -> float C++: virtual double GetPlaceFactorMaxValue() Set/Get a factor representing the scaling of the widget upon placement (via the PlaceWidget() method). Normally the widget is placed so that it just fits within the bounding box defined in PlaceWidget(bounds). The PlaceFactor will make the widget larger (PlaceFactor > 1) or smaller (PlaceFactor < 1). By default, PlaceFactor is set to 0.5. V.GetPlaceFactor() -> float C++: virtual double GetPlaceFactor() Set/Get a factor representing the scaling of the widget upon placement (via the PlaceWidget() method). Normally the widget is placed so that it just fits within the bounding box defined in PlaceWidget(bounds). The PlaceFactor will make the widget larger (PlaceFactor > 1) or smaller (PlaceFactor < 1). By default, PlaceFactor is set to 0.5. V.SetHandleSize(float) C++: virtual void SetHandleSize(double _arg) Set/Get the factor that controls the size of the handles that appear as part of the widget (if any). These handles (like spheres, etc.) are used to manipulate the widget. The HandleSize data member allows you to change the relative size of the handles. Note that while the handle size is typically expressed in pixels, some subclasses may use a relative size with respect to the viewport. (As a corollary, the value of this ivar is often set by subclasses of this class during instance instantiation.) V.GetHandleSizeMinValue() -> float C++: virtual double GetHandleSizeMinValue() Set/Get the factor that controls the size of the handles that appear as part of the widget (if any). These handles (like spheres, etc.) are used to manipulate the widget. The HandleSize data member allows you to change the relative size of the handles. Note that while the handle size is typically expressed in pixels, some subclasses may use a relative size with respect to the viewport. (As a corollary, the value of this ivar is often set by subclasses of this class during instance instantiation.) V.GetHandleSizeMaxValue() -> float C++: virtual double GetHandleSizeMaxValue() Set/Get the factor that controls the size of the handles that appear as part of the widget (if any). These handles (like spheres, etc.) are used to manipulate the widget. The HandleSize data member allows you to change the relative size of the handles. Note that while the handle size is typically expressed in pixels, some subclasses may use a relative size with respect to the viewport. (As a corollary, the value of this ivar is often set by subclasses of this class during instance instantiation.) V.GetHandleSize() -> float C++: virtual double GetHandleSize() Set/Get the factor that controls the size of the handles that appear as part of the widget (if any). These handles (like spheres, etc.) are used to manipulate the widget. The HandleSize data member allows you to change the relative size of the handles. Note that while the handle size is typically expressed in pixels, some subclasses may use a relative size with respect to the viewport. (As a corollary, the value of this ivar is often set by subclasses of this class during instance instantiation.) V.GetNeedToRender() -> int C++: virtual int GetNeedToRender() Some subclasses use this data member to keep track of whether to render or not (i.e., to minimize the total number of renders). V.SetNeedToRender(int) C++: virtual void SetNeedToRender(int _arg) Some subclasses use this data member to keep track of whether to render or not (i.e., to minimize the total number of renders). V.GetNeedToRenderMinValue() -> int C++: virtual int GetNeedToRenderMinValue() Some subclasses use this data member to keep track of whether to render or not (i.e., to minimize the total number of renders). V.GetNeedToRenderMaxValue() -> int C++: virtual int GetNeedToRenderMaxValue() Some subclasses use this data member to keep track of whether to render or not (i.e., to minimize the total number of renders). V.NeedToRenderOn() C++: virtual void NeedToRenderOn() Some subclasses use this data member to keep track of whether to render or not (i.e., to minimize the total number of renders). V.NeedToRenderOff() C++: virtual void NeedToRenderOff() Some subclasses use this data member to keep track of whether to render or not (i.e., to minimize the total number of renders). V.GetBounds() -> (float, float, float, float, float, float) C++: double *GetBounds() override; Methods to make this class behave as a vtkProp. They are repeated here (from the vtkProp superclass) as a reminder to the widget implementor. Failure to implement these methods properly may result in the representation not appearing in the scene (i.e., not implementing the Render() methods properly) or leaking graphics resources (i.e., not implementing ReleaseGraphicsResources() properly). V.ShallowCopy(vtkProp) C++: void ShallowCopy(vtkProp *prop) override; Shallow copy of this vtkProp. V.GetActors(vtkPropCollection) C++: void GetActors(vtkPropCollection *) override; For some exporters and other other operations we must be able to collect all the actors or volumes. These methods are used in that process. V.GetActors2D(vtkPropCollection) C++: void GetActors2D(vtkPropCollection *) override; V.GetVolumes(vtkPropCollection) C++: void GetVolumes(vtkPropCollection *) override; V.ReleaseGraphicsResources(vtkWindow) C++: void ReleaseGraphicsResources(vtkWindow *) override; WARNING: INTERNAL METHOD - NOT INTENDED FOR GENERAL USE Release any graphics resources that are being consumed by this actor. The parameter window could be used to determine which graphic resources to release. V.RenderOverlay(vtkViewport) -> int C++: int RenderOverlay(vtkViewport *viewport) override; V.RenderOpaqueGeometry(vtkViewport) -> int C++: int RenderOpaqueGeometry(vtkViewport *viewport) override; WARNING: INTERNAL METHOD - NOT INTENDED FOR GENERAL USE DO NOT USE THESE METHODS OUTSIDE OF THE RENDERING PROCESS All concrete subclasses must be able to render themselves. There are four key render methods in vtk and they correspond to four different points in the rendering cycle. Any given prop may implement one or more of these methods. The first method is intended for rendering all opaque geometry. The second method is intended for rendering all translucent polygonal geometry. The third one is intended for rendering all translucent volumetric geometry. Most of the volume rendering mappers draw their results during this third method. The last method is to render any 2D annotation or overlays. Each of these methods return an integer value indicating whether or not this render method was applied to this data. V.RenderTranslucentPolygonalGeometry(vtkViewport) -> int C++: int RenderTranslucentPolygonalGeometry(vtkViewport *viewport) override; V.RenderVolumetricGeometry(vtkViewport) -> int C++: int RenderVolumetricGeometry(vtkViewport *viewport) override; V.HasTranslucentPolygonalGeometry() -> int C++: int HasTranslucentPolygonalGeometry() override; WARNING: INTERNAL METHOD - NOT INTENDED FOR GENERAL USE DO NOT USE THESE METHODS OUTSIDE OF THE RENDERING PROCESS Does this prop have some translucent polygonal geometry? This method is called during the rendering process to know if there is some translucent polygonal geometry. A simple prop that has some translucent polygonal geometry will return true. A composite prop (like vtkAssembly) that has at least one sub-prop that has some translucent polygonal geometry will return true. Default implementation return false. 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