#include <vtkAbstractPicker.h>
Inheritance diagram for vtkAbstractPicker:
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 has hooks for methods to call during the picking process. These methods are StartPickMethod(), PickMethod(), and EndPickMethod() 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 PickMethod() of vtkProp (and its subclasses such as vtkActor) is called prior to the pick method of vtkPicker.
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.
Definition at line 70 of file vtkAbstractPicker.h.
Public Types | |
typedef vtkObject | Superclass |
Public Member Functions | |
virtual const char * | GetClassName () |
virtual int | IsA (const char *type) |
void | PrintSelf (ostream &os, vtkIndent indent) |
void | SetStartPickMethod (void(*f)(void *), void *arg) |
void | SetPickMethod (void(*f)(void *), void *arg) |
void | SetEndPickMethod (void(*f)(void *), void *arg) |
void | SetStartPickMethodArgDelete (void(*f)(void *)) |
void | SetPickMethodArgDelete (void(*f)(void *)) |
void | SetEndPickMethodArgDelete (void(*f)(void *)) |
void | InitializePickList () |
void | AddPickList (vtkProp *) |
void | DeletePickList (vtkProp *) |
vtkPropCollection * | GetPickList () |
virtual vtkRenderer * | GetRenderer () |
virtual float * | GetSelectionPoint () |
virtual void | GetSelectionPoint (float data[3]) |
virtual float * | GetPickPosition () |
virtual void | GetPickPosition (float data[3]) |
virtual int | Pick (float selectionX, float selectionY, float selectionZ, vtkRenderer *renderer)=0 |
int | Pick (float selectionPt[3], vtkRenderer *ren) |
virtual void | SetPickFromList (int) |
virtual int | GetPickFromList () |
virtual void | PickFromListOn () |
virtual void | PickFromListOff () |
Static Public Member Functions | |
int | IsTypeOf (const char *type) |
vtkAbstractPicker * | SafeDownCast (vtkObject *o) |
Protected Member Functions | |
vtkAbstractPicker () | |
~vtkAbstractPicker () | |
virtual void | Initialize () |
Protected Attributes | |
vtkRenderer * | Renderer |
float | SelectionPoint [3] |
float | PickPosition [3] |
unsigned long | StartPickTag |
unsigned long | PickTag |
unsigned long | EndPickTag |
int | PickFromList |
vtkPropCollection * | PickList |
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Reimplemented from vtkObject.
Reimplemented in vtkAbstractPropPicker, vtkCellPicker, vtkPicker, vtkPointPicker, vtkPropPicker, and vtkWorldPointPicker. Definition at line 73 of file vtkAbstractPicker.h. |
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Reimplemented from vtkObject.
Reimplemented in vtkAbstractPropPicker, vtkCellPicker, vtkPicker, vtkPointPicker, vtkPropPicker, and vtkWorldPointPicker.
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Return 1 if this class type is the same type of (or a subclass of) the named class. Returns 0 otherwise. This method works in combination with vtkTypeRevisionMacro found in vtkSetGet.h. Reimplemented from vtkObject.
Reimplemented in vtkAbstractPropPicker, vtkCellPicker, vtkPicker, vtkPointPicker, vtkPropPicker, and vtkWorldPointPicker.
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Return 1 if this class is the same type of (or a subclass of) the named class. Returns 0 otherwise. This method works in combination with vtkTypeRevisionMacro found in vtkSetGet.h. Reimplemented from vtkObject.
Reimplemented in vtkAbstractPropPicker, vtkCellPicker, vtkPicker, vtkPointPicker, vtkPropPicker, and vtkWorldPointPicker.
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Reimplemented from vtkObject.
Reimplemented in vtkAbstractPropPicker, vtkCellPicker, vtkPicker, vtkPointPicker, vtkPropPicker, and vtkWorldPointPicker.
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Methods invoked by print to print information about the object including superclasses. Typically not called by the user (use Print() instead) but used in the hierarchical print process to combine the output of several classes. Reimplemented from vtkObject.
Reimplemented in vtkAbstractPropPicker, vtkCellPicker, vtkPicker, vtkPointPicker, vtkPropPicker, and vtkWorldPointPicker.
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Get the renderer in which pick event occurred. |
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Get the selection point in screen (pixel) coordinates. The third value is related to z-buffer depth. (Normally should be =0.) |
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Get the selection point in screen (pixel) coordinates. The third value is related to z-buffer depth. (Normally should be =0.) |
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Return position in global coordinates of pick point. |
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Return position in global coordinates of pick point. |
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Perform pick operation with selection point provided. Normally the first two values for the selection point are x-y pixel coordinate, and the third value is =0. Return non-zero if something was successfully picked. Implemented in vtkPicker, vtkPropPicker, and vtkWorldPointPicker.
Referenced by vtkWorldPointPicker::Pick(), vtkPropPicker::Pick(), and vtkPicker::Pick(). |
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provided. Normally the first two values for the selection point are x-y pixel coordinate, and the third value is =0. Return non-zero if something was successfully picked. Reimplemented in vtkPicker, vtkPropPicker, and vtkWorldPointPicker. Definition at line 105 of file vtkAbstractPicker.h. |
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begins. |
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Specify function to be called when something is picked. |
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Specify function to be called after all picking operations have been performed. |
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Set a method to delete user arguments for StartPickMethod. |
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Set a method to delete user arguments for PickMethod. |
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Set a method to delete user arguments for EndPickMethod. |
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Use these methods to control whether to limit the picking to this list (rather than renderer's actors). Make sure that the pick list contains actors that referred to by the picker's renderer. |
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Use these methods to control whether to limit the picking to this list (rather than renderer's actors). Make sure that the pick list contains actors that referred to by the picker's renderer. |
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Use these methods to control whether to limit the picking to this list (rather than renderer's actors). Make sure that the pick list contains actors that referred to by the picker's renderer. |
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Use these methods to control whether to limit the picking to this list (rather than renderer's actors). Make sure that the pick list contains actors that referred to by the picker's renderer. |
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Initialize list of actors in pick list. |
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Add an actor to the pick list. |
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Delete an actor from the pick list. |
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Return the list of actors in the PickList. Definition at line 147 of file vtkAbstractPicker.h. |
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Reimplemented in vtkAbstractPropPicker, vtkCellPicker, vtkPicker, vtkPointPicker, and vtkPropPicker.
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Definition at line 155 of file vtkAbstractPicker.h. |
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Definition at line 156 of file vtkAbstractPicker.h. |
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Definition at line 157 of file vtkAbstractPicker.h. |
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Definition at line 160 of file vtkAbstractPicker.h. |
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Definition at line 161 of file vtkAbstractPicker.h. |
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Definition at line 162 of file vtkAbstractPicker.h. |
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Definition at line 165 of file vtkAbstractPicker.h. |
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Definition at line 166 of file vtkAbstractPicker.h. |