vtkSeedRepresentation.h

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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
 
#ifndef vtkSeedRepresentation_h
#define vtkSeedRepresentation_h
 
#include "vtkInteractionWidgetsModule.h" // For export macro
#include "vtkWidgetRepresentation.h"
#include "vtkWrappingHints.h" // For VTK_MARSHALAUTO
 
VTK_ABI_NAMESPACE_BEGIN
class vtkHandleList;
class vtkHandleRepresentation;
 
class VTKINTERACTIONWIDGETS_EXPORT VTK_MARSHALAUTO vtkSeedRepresentation
  : public vtkWidgetRepresentation
{
public:
  static vtkSeedRepresentation* New();


  vtkTypeMacro(vtkSeedRepresentation, vtkWidgetRepresentation);
  void PrintSelf(ostream& os, vtkIndent indent) override;


  virtual void GetSeedWorldPosition(unsigned int seedNum, double pos[3]);
  virtual void SetSeedWorldPosition(unsigned int seedNum, double pos[3]);
  virtual void SetSeedDisplayPosition(unsigned int seedNum, double pos[3]);
  virtual void GetSeedDisplayPosition(unsigned int seedNum, double pos[3]);

  int GetNumberOfSeeds();

  void SetHandleRepresentation(vtkHandleRepresentation* handle);

  vtkHandleRepresentation* GetHandleRepresentation(unsigned int num);


  vtkHandleRepresentation* GetHandleRepresentation() { return this->HandleRepresentation; }


  vtkSetClampMacro(Tolerance, int, 1, 100);
  vtkGetMacro(Tolerance, int);
 
  // Used to communicate about the state of the representation
  enum
  {
    Outside = 0,
    NearSeed
  };


  virtual int GetActiveHandle();
  virtual void SetActiveHandle(int handleId);
  // Returns the id of the seed created, -1 on failure. e is the display position.
  virtual int CreateHandle(double e[2]);
  // Delete last handle created
  virtual void RemoveLastHandle();
  // Delete the currently active handle
  virtual void RemoveActiveHandle();

  virtual void RemoveHandle(int n);


  void BuildRepresentation() override;
  int ComputeInteractionState(int X, int Y, int modify = 0) override;
  void GetActors(vtkPropCollection*) override;
 
protected:
  vtkSeedRepresentation();
  ~vtkSeedRepresentation() override;
 
  // 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;
 
private:
  vtkSeedRepresentation(const vtkSeedRepresentation&) = delete;
  void operator=(const vtkSeedRepresentation&) = delete;
};
 
VTK_ABI_NAMESPACE_END
#endif