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Program: Visualization Toolkit
Module: vtkSeedRepresentation.h
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or for details.
This software is distributed WITHOUT ANY WARRANTY; without even
PURPOSE. See the above copyright notice for more information.
// .NAME vtkSeedRepresentation - represent the vtkSeedWidget
// .SECTION Description
// The vtkSeedRepresentation is a superclass for classes representing the
// vtkSeedWidget. This representation consists of one or more handles
// (vtkHandleRepresentation) which are used to place and manipulate the
// points defining the collection of seeds.
// .SECTION See Also
// vtkSeedWidget vtkHandleRepresentation vtkSeedRepresentation
#ifndef __vtkSeedRepresentation_h
#define __vtkSeedRepresentation_h
#include "vtkWidgetRepresentation.h"
class vtkHandleList;
class vtkHandleRepresentation;
class VTK_WIDGETS_EXPORT vtkSeedRepresentation : public vtkWidgetRepresentation
// Description:
// Instantiate class.
static vtkSeedRepresentation *New();
// Description:
// Standard VTK methods.
void PrintSelf(ostream& os, vtkIndent indent);
// Description:
// Methods to Set/Get the coordinates of seed points defining
// this representation. Note that methods are available for both
// display and world coordinates. The seeds are accessed by a seed
// number.
virtual void GetSeedWorldPosition( unsigned int seedNum, double pos[3] );
virtual void SetSeedDisplayPosition( unsigned int seedNum, double pos[3] );
virtual void GetSeedDisplayPosition( unsigned int seedNum, double pos[3] );
// Description:
// Return the number of seeds (or handles) that have been created.
int GetNumberOfSeeds();
// Description:
// This method is used to specify the type of handle representation to use
// for the internal vtkHandleWidgets within vtkSeedWidget. To use this
// method, create a dummy vtkHandleWidget (or subclass), and then invoke
// this method with this dummy. Then the vtkSeedRepresentation uses this
// dummy to clone vtkHandleWidgets of the same type. Make sure you set the
// handle representation before the widget is enabled.
void SetHandleRepresentation( vtkHandleRepresentation *handle );
// Description:
// Get the handle representations used for a particular seed. A side effect of
// this method is that it will create a handle representation in the list of
// representations if one has not yet been created.
vtkHandleRepresentation *GetHandleRepresentation( unsigned int num );
// Description:
// Returns the model HandleRepresentation.
vtkHandleRepresentation *GetHandleRepresentation()
return this->HandleRepresentation;
// Description:
// The tolerance representing the distance to the widget (in pixels) in
// which the cursor is considered near enough to the end points of
// the widget to be active.
vtkSetClampMacro( Tolerance, int, 1, 100 );
vtkGetMacro( Tolerance, int );
//BTX -- used to communicate about the state of the representation
Outside = 0,
// Description:
// These are methods specific to vtkSeedRepresentation and which are
// invoked from vtkSeedWidget.
virtual int GetActiveHandle();
virtual int CreateHandle( double e[2] ); //returns the id of the seed created
virtual void RemoveLastHandle(); //delete last handle created
virtual void RemoveActiveHandle();
// Description:
// Remove the nth handle.
virtual void RemoveHandle( int n );
// Description:
// These are methods that satisfy vtkWidgetRepresentation's API.
virtual void BuildRepresentation();
virtual int ComputeInteractionState( int X, int Y, int modify = 0 );
// The handle and the rep used to close the handles
vtkHandleRepresentation *HandleRepresentation;
vtkHandleList *Handles;
// Selection tolerance for the handles
int Tolerance;
// The active seed (handle) based on the last ComputeInteractionState()
int ActiveHandle;
vtkSeedRepresentation(const vtkSeedRepresentation&); //Not implemented
void operator=(const vtkSeedRepresentation&); //Not implemented