vtkDistanceRepresentation.h

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

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

  virtual double GetDistance() = 0;


  virtual void GetPoint1WorldPosition(double pos[3]) VTK_FUTURE_CONST = 0;
  virtual void GetPoint2WorldPosition(double pos[3]) VTK_FUTURE_CONST = 0;
  virtual double* GetPoint1WorldPosition() VTK_SIZEHINT(3) = 0;
  virtual double* GetPoint2WorldPosition() VTK_SIZEHINT(3) = 0;
  virtual void SetPoint1DisplayPosition(double pos[3]) = 0;
  virtual void SetPoint2DisplayPosition(double pos[3]) = 0;
  virtual void GetPoint1DisplayPosition(double pos[3]) VTK_FUTURE_CONST = 0;
  virtual void GetPoint2DisplayPosition(double pos[3]) VTK_FUTURE_CONST = 0;
  virtual void SetPoint1WorldPosition(double pos[3]) = 0;
  virtual void SetPoint2WorldPosition(double pos[3]) = 0;


  void SetHandleRepresentation(vtkHandleRepresentation* handle);
  void InstantiateHandleRepresentation();


  vtkGetObjectMacro(Point1Representation, vtkHandleRepresentation);
  vtkGetObjectMacro(Point2Representation, vtkHandleRepresentation);


  vtkSetClampMacro(Tolerance, int, 1, 100);
  vtkGetMacro(Tolerance, int);


  vtkSetStringMacro(LabelFormat);
  vtkGetStringMacro(LabelFormat);


  vtkSetMacro(Scale, double);
  vtkGetMacro(Scale, double);


  vtkSetMacro(RulerMode, vtkTypeBool);
  vtkGetMacro(RulerMode, vtkTypeBool);
  vtkBooleanMacro(RulerMode, vtkTypeBool);


  vtkSetClampMacro(RulerDistance, double, 0, VTK_FLOAT_MAX);
  vtkGetMacro(RulerDistance, double);


  vtkSetClampMacro(NumberOfRulerTicks, int, 1, VTK_INT_MAX);
  vtkGetMacro(NumberOfRulerTicks, int);
 
  // Used to communicate about the state of the representation
  enum
  {
    Outside = 0,
    NearP1,
    NearP2
  };


  void BuildRepresentation() override;
  int ComputeInteractionState(int X, int Y, int modify = 0) override;
  void StartWidgetInteraction(double e[2]) override;
  void WidgetInteraction(double e[2]) override;
  void StartComplexInteraction(vtkRenderWindowInteractor* iren, vtkAbstractWidget* widget,
    unsigned long event, void* calldata) override;
  void ComplexInteraction(vtkRenderWindowInteractor* iren, vtkAbstractWidget* widget,
    unsigned long event, void* calldata) override;
  int ComputeComplexInteractionState(vtkRenderWindowInteractor* iren, vtkAbstractWidget* widget,
    unsigned long event, void* calldata, int modify = 0) override;
 
protected:
  vtkDistanceRepresentation();
  ~vtkDistanceRepresentation() override;
 
  // The handle and the rep used to close the handles
  vtkHandleRepresentation* HandleRepresentation;
  vtkHandleRepresentation* Point1Representation;
  vtkHandleRepresentation* Point2Representation;
 
  // Selection tolerance for the handles
  int Tolerance;
 
  // Format for printing the distance
  char* LabelFormat;
 
  // Scale to change from the VTK world coordinates to the desired coordinate
  // system.
  double Scale;
 
  // Ruler related stuff
  vtkTypeBool RulerMode;
  double RulerDistance;
  int NumberOfRulerTicks;
 
private:
  vtkDistanceRepresentation(const vtkDistanceRepresentation&) = delete;
  void operator=(const vtkDistanceRepresentation&) = delete;
};
 
VTK_ABI_NAMESPACE_END
#endif