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| virtual vtkTypeBool | IsA (const char *type) |
| | Return 1 if this class is the same type of (or a subclass of) the named class. More...
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| vtkAbstractPicker * | NewInstance () const |
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| void | PrintSelf (ostream &os, vtkIndent indent) override |
| | Methods invoked by print to print information about the object including superclasses. More...
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| virtual int | Pick (double selectionX, double selectionY, double selectionZ, vtkRenderer *renderer)=0 |
| | Perform pick operation with selection point provided. More...
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| int | Pick (double selectionPt[3], vtkRenderer *ren) |
| | provided. More...
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| virtual int | Pick3DPoint (double[3], vtkRenderer *) |
| | Perform pick operation with selection point provided. More...
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| virtual int | Pick3DRay (double[3], double[4], vtkRenderer *) |
| | Perform pick operation with selection point and orientation provided. More...
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| void | InitializePickList () |
| | Initialize list of actors in pick list. More...
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| void | AddPickList (vtkProp *) |
| | Add an actor to the pick list. More...
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| void | DeletePickList (vtkProp *) |
| | Delete an actor from the pick list. More...
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| vtkPropCollection * | GetPickList () |
| | Return the list of actors in the PickList. More...
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| virtual vtkRenderer * | GetRenderer () |
| | Get the renderer in which pick event occurred. More...
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| virtual double * | GetSelectionPoint () |
| | Get the selection point in screen (pixel) coordinates. More...
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| virtual void | GetSelectionPoint (double data[3]) |
| | Get the selection point in screen (pixel) coordinates. More...
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| virtual double * | GetPickPosition () |
| | Return position in global coordinates of pick point. More...
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| virtual void | GetPickPosition (double data[3]) |
| | Return position in global coordinates of pick point. More...
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| virtual void | SetPickFromList (vtkTypeBool) |
| | Use these methods to control whether to limit the picking to this list (rather than renderer's actors). More...
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| virtual vtkTypeBool | GetPickFromList () |
| | Use these methods to control whether to limit the picking to this list (rather than renderer's actors). More...
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| virtual void | PickFromListOn () |
| | Use these methods to control whether to limit the picking to this list (rather than renderer's actors). More...
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| virtual void | PickFromListOff () |
| | Use these methods to control whether to limit the picking to this list (rather than renderer's actors). More...
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| | vtkBaseTypeMacro (vtkObject, vtkObjectBase) |
| |
| virtual void | DebugOn () |
| | Turn debugging output on. More...
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| virtual void | DebugOff () |
| | Turn debugging output off. More...
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| bool | GetDebug () |
| | Get the value of the debug flag. More...
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| void | SetDebug (bool debugFlag) |
| | Set the value of the debug flag. More...
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| virtual void | Modified () |
| | Update the modification time for this object. More...
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| virtual vtkMTimeType | GetMTime () |
| | Return this object's modified time. More...
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| void | RemoveObserver (unsigned long tag) |
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| void | RemoveObservers (unsigned long event) |
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| void | RemoveObservers (const char *event) |
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| void | RemoveAllObservers () |
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| vtkTypeBool | HasObserver (unsigned long event) |
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| vtkTypeBool | HasObserver (const char *event) |
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| int | InvokeEvent (unsigned long event) |
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| int | InvokeEvent (const char *event) |
| |
| unsigned long | AddObserver (unsigned long event, vtkCommand *, float priority=0.0f) |
| | Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...
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| unsigned long | AddObserver (const char *event, vtkCommand *, float priority=0.0f) |
| | Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...
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| vtkCommand * | GetCommand (unsigned long tag) |
| | Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...
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| void | RemoveObserver (vtkCommand *) |
| | Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...
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| void | RemoveObservers (unsigned long event, vtkCommand *) |
| | Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...
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| void | RemoveObservers (const char *event, vtkCommand *) |
| | Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...
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| vtkTypeBool | HasObserver (unsigned long event, vtkCommand *) |
| | Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...
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| vtkTypeBool | HasObserver (const char *event, vtkCommand *) |
| | Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...
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| template<class U , class T > |
| unsigned long | AddObserver (unsigned long event, U observer, void(T::*callback)(), float priority=0.0f) |
| | Overloads to AddObserver that allow developers to add class member functions as callbacks for events. More...
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| |
| template<class U , class T > |
| unsigned long | AddObserver (unsigned long event, U observer, void(T::*callback)(vtkObject *, unsigned long, void *), float priority=0.0f) |
| | Overloads to AddObserver that allow developers to add class member functions as callbacks for events. More...
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| |
| template<class U , class T > |
| unsigned long | AddObserver (unsigned long event, U observer, bool(T::*callback)(vtkObject *, unsigned long, void *), float priority=0.0f) |
| | Allow user to set the AbortFlagOn() with the return value of the callback method. More...
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| int | InvokeEvent (unsigned long event, void *callData) |
| | This method invokes an event and return whether the event was aborted or not. More...
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| int | InvokeEvent (const char *event, void *callData) |
| | This method invokes an event and return whether the event was aborted or not. More...
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| const char * | GetClassName () const |
| | Return the class name as a string. More...
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| virtual void | Delete () |
| | Delete a VTK object. More...
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| virtual void | FastDelete () |
| | Delete a reference to this object. More...
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| void | InitializeObjectBase () |
| |
| void | Print (ostream &os) |
| | Print an object to an ostream. More...
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| virtual void | Register (vtkObjectBase *o) |
| | Increase the reference count (mark as used by another object). More...
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| virtual void | UnRegister (vtkObjectBase *o) |
| | Decrease the reference count (release by another object). More...
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| int | GetReferenceCount () |
| | Return the current reference count of this object. More...
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| void | SetReferenceCount (int) |
| | Sets the reference count. More...
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| |
| void | PrintRevisions (ostream &) |
| | Legacy. More...
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| |
| virtual void | PrintHeader (ostream &os, vtkIndent indent) |
| | Methods invoked by print to print information about the object including superclasses. More...
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| |
| virtual void | PrintTrailer (ostream &os, vtkIndent indent) |
| | Methods invoked by print to print information about the object including superclasses. More...
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| |
define API for picking subclasses
vtkAbstractPicker is an abstract superclass that defines a minimal API for its concrete subclasses. The minimum functionality of a picker is to return the x-y-z global coordinate position of a pick (the pick itself is defined in display coordinates).
The API to this class is to invoke the Pick() method with a selection point (in display coordinates - pixels) and a renderer. Then get the resulting pick position in global coordinates with the GetPickPosition() method.
vtkPicker fires events during the picking process. These events are StartPickEvent, PickEvent, and EndPickEvent which are invoked prior to picking, when something is picked, and after all picking candidates have been tested. Note that during the pick process the PickEvent of vtkProp (and its subclasses such as vtkActor) is fired prior to the PickEvent of vtkPicker.
- Warning
- vtkAbstractPicker and its subclasses will not pick props that are "unpickable" (see vtkProp) or are fully transparent (if transparency is a property of the vtkProp).
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There are two classes of pickers: those that pick using geometric methods (typically a ray cast); and those that use rendering hardware. Geometric methods return more information but are slower. Hardware methods are much faster and return minimal information. Examples of geometric pickers include vtkPicker, vtkCellPicker, and vtkPointPicker. Examples of hardware pickers include vtkWorldPointPicker and vtkPropPicker.
- See also
- vtkPropPicker uses hardware acceleration to pick an instance of vtkProp. (This means that 2D and 3D props can be picked, and it's relatively fast.) If you need to pick cells or points, you might wish to use vtkCellPicker or vtkPointPicker. vtkWorldPointPicker is the fastest picker, returning an x-y-z coordinate value using the hardware z-buffer. vtkPicker can be used to pick the bounding box of 3D props.
Definition at line 68 of file vtkAbstractPicker.h.
Public Member Functions inherited from vtkObject